WO2012147800A1 - 乳ガン患者のトラスツズマブに対する治療感受性予測用組成物及び方法 - Google Patents
乳ガン患者のトラスツズマブに対する治療感受性予測用組成物及び方法 Download PDFInfo
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- WO2012147800A1 WO2012147800A1 PCT/JP2012/061100 JP2012061100W WO2012147800A1 WO 2012147800 A1 WO2012147800 A1 WO 2012147800A1 JP 2012061100 W JP2012061100 W JP 2012061100W WO 2012147800 A1 WO2012147800 A1 WO 2012147800A1
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Definitions
- the present invention relates to a composition useful for predicting (or determining, evaluating, detecting or diagnosing) therapeutic sensitivity of a breast cancer patient to trastuzumab, and predicting (or determining) the therapeutic sensitivity of a breast cancer patient to trastuzumab using the composition.
- the present invention relates to a method for evaluating (evaluating, detecting or diagnosing) and a kit for predicting (or determining, evaluating, detecting or diagnosing) therapeutic sensitivity of a breast cancer patient to trastuzumab using the composition.
- breast cancer is a disease in which cells in breast tissue become malignant and proliferate unregulatedly, and the prevalence of women is 1 in 25-30 in Japan and 1 in 8-10 in the West. It is known that men also suffer from breast cancer although the morbidity is low. Recent studies have shown that breast cancer consists of diverse populations with different biological characteristics, and that response to treatment and prognosis vary among patients in each population. That is, it has been suggested that breast cancer can be roughly divided into five molecular subtypes by comprehensive expression gene analysis by DNA chip analysis. However, in daily clinical practice, treatment strategies are often examined by classifying into four subtypes by detecting the expression of esrotogen receptor, progesterone receptor, and Her2 protein.
- Treatment of breast cancer is basically surgery, but drug therapy and radiation therapy are combined depending on the degree of progression, metastasis, general condition, and classification of breast cancer.
- drug therapy it is important to evaluate the drug to be administered to the subject patient and select an appropriate treatment policy according to the aforementioned breast cancer subtype (Non-patent Document 1).
- Her2 positive breast cancer which accounts for about 25% of breast cancers, has a high malignancy and metastasis rate and a poor prognosis, and improvement of the treatment results of Her2 positive breast cancer will continue to be an extremely important issue in the future. .
- Trastuzumab (trade name “Herceptin” (registered trademark, Chugai Pharmaceutical)) is an antibody drug approved by the Ministry of Health, Labor and Welfare, and causes an antitumor effect by binding to Her2 protein present on the cell surface of Her2 positive breast cancer.
- Trastuzumab is the first-line drug used for Her2-positive breast cancer.
- some patients with Her2 positive breast cancer are known to have trastuzumab-insensitive breast cancer that does not have the effect of trastuzumab, and patients who experience serious side effects such as heart failure, dyspnea, and allergies due to trastuzumab medication. Yes.
- Methods used to distinguish whether breast cancer is Her2 positive in current clinical diagnosis include detection of Her2 protein overexpression by immunohistochemical methods and / or on the genome corresponding to Her2 protein Although this is detection of gene amplification, this method cannot discriminate between breast cancer patients showing trastuzumab insensitivity and breast cancer patients with side effects despite being Her2 positive.
- Non-patent Document 2 overexpression of Her2 protein was recognized by immunohistochemical techniques, and it was known that the proportion of patients treated with trastuzumab alone was sensitive to trastuzumab was 35% or less (Non-patent Document 2), and a method for detecting Her2 positivity by detecting overexpression of Her2 protein by immunohistochemical technique or detecting gene amplification on the genome corresponding to Her2 protein (Examination of Non-Patent Document 3) In the method), it is known that the proportion of patients who have been treated with trastuzumab combined with other anti-cancer agents is 65.2% or less that are sensitive to trastuzumab (Non-patent Document 3) . In other words, the accuracy of trastuzumab sensitivity prediction in the inspection method of Non-Patent Document 3 currently used in the clinical field is only 65.2%.
- Non-Patent Document 4 the expression level of PTEN in Her2-positive breast cancer patients is evaluated by immunohistological techniques, and the cells in which the expression of PTEN is suppressed are less susceptible to growth inhibition by trastuzumab, and the expression level of PTEN is Her2-positive breast cancer It is correlated with suppression of disease progression by trastuzumab in patients.
- Non-Patent Document 5 the expression level of Cyclin E protein in a patient susceptible to treatment with trastuzumab in Her2 positive breast cancer was evaluated by an immunohistochemical method, and Cyclin in a patient group treated with trastuzumab and other anticancer agents. This shows that the proportion of patients whose disease state did not progress was high in the group with a high expression level of E protein.
- Non-Patent Document 6 shows that an increase in the expression level of miR-125a and miR-125b decreases the expression level of Her2 protein, which is a target protein of trastuzumab.
- let-7a (patent document 1)
- let-7b (patent document 1)
- miR-145 (patent document 2)
- miR-200c (patent document 3) It is known that the expression level increases in breast cancer patients.
- Non-Patent Document 4 It is impossible for PTEN of Non-Patent Document 4 to predict the therapeutic sensitivity of individual breast cancer patients to trastuzumab before administration based on the expression level of PTEN. And Cyclin E of Non-Patent Document 5 cannot predict the therapeutic sensitivity of individual breast cancer patients to trastuzumab based on the expression level of Cyclin E protein.
- miR-125a and miR-125b of Non-Patent Document 6 are unclear on the relationship between increased expression of miR-125a and miR-125b and therapeutic sensitivity to trastuzumab in Her2-positive breast cancer patients.
- the treatment sensitivity of individual breast cancer patients to trastuzumab cannot be predicted. Therefore, clinical use is not generally performed using these expression levels as indices, and there is an urgent need for predictive markers for treatment sensitivity to trastuzumab in breast cancer patients with higher prediction accuracy.
- the present invention relates to a composition useful for predicting (or determining, evaluating, detecting or diagnosing) therapeutic sensitivity of a breast cancer patient to trastuzumab, and predicting (or determining) the therapeutic sensitivity of a breast cancer patient to trastuzumab using the composition. (Evaluation, detection, or diagnosis) method and a kit for predicting (or determining, evaluating, detecting, or diagnosing) treatment sensitivity of a breast cancer patient to trastuzumab using the composition.
- Genetic marker search methods for predicting susceptibility to trastuzumab in breast cancer patients include collection at the time of examination, before treatment, during treatment, or after treatment by treatment with trastuzumab or a combination of trastuzumab and other anticancer agents for breast cancer patients. Compare the amount of genes, proteins, or metabolites in tissues, fluids, or secretions from breast cancer patients using some means between patients with and without treatment sensitivity to trastuzumab A method is mentioned.
- probes using base sequences corresponding to hundreds to tens of thousands of genes are fixed to the DNA chip.
- the gene in the sample binds to the probe, and the amount of gene in the test sample can be known by measuring the amount of binding by some means.
- the gene corresponding to the probe immobilized on the DNA chip can be freely selected, and samples such as tissue derived from breast cancer patients, FFPE specimens, body fluids, secretions, etc., collected at the time of examination, before treatment, during treatment, or after treatment Can be used to estimate gene groups that can serve as markers that can be used for breast cancer diagnosis by comparing gene expression levels in the sample.
- the present inventors analyzed the gene expression level obtained from a needle biopsy tissue of a breast cancer lesion part collected from a breast cancer patient before treatment by using a DNA chip, and the therapeutic sensitivity to trastuzumab of the breast cancer patient was confirmed. Genes that can be predicted markers are found, and the gene expression level of breast cancer patients with high therapeutic sensitivity to trastuzumab is decreased, decreased, increased, or increased in breast cancer lesions obtained from breast cancer patients As a result, the present invention has been completed.
- the present invention relates to trastuzumab for breast cancer patients, comprising two or more polynucleotides selected from the group consisting of the polynucleotides shown in the following (a) to (j), variants or fragments thereof:
- a composition for predicting therapeutic sensitivity is provided.
- A a polynucleotide comprising the base sequence represented by SEQ ID NOs: 1 to 9, SEQ ID NOs: 11 to 19, and SEQ ID NOs: 21 to 23, or a base sequence in which u is t in the base sequence, a variant thereof, A derivative thereof, or a fragment thereof containing 16 or more consecutive bases
- B a nucleotide sequence represented by SEQ ID NO: 1 to 9, SEQ ID NO: 11 to 19, and SEQ ID NO: 21 to 23, or u in the nucleotide sequence
- C a nucleotide sequence represented by SEQ ID NO: 1 to 9, SEQ ID NO: 11 to 19, and SEQ ID NO: 21 to 23, or a nucleotide sequence in which u is t in the nucleotide sequence
- d SEQ ID NOs: 1 to 9, SEQ ID NOs: 11
- nucleotide sequence in which u is t in the nucleotide sequence (e) the polynucleotide of any one of (a) to (d) above
- the present invention relates to the prediction of therapeutic sensitivity to trastuzumab in breast cancer patients, comprising two or more of the polynucleotides (a) to (e) above, variants, derivatives thereof, and / or fragments thereof.
- a kit is provided.
- the kit further comprises one or two of the polynucleotides shown in (f) to (j) above, variants thereof, derivatives thereof, and / or fragments thereof.
- the polynucleotide is a polynucleotide comprising the nucleotide sequence represented by any of SEQ ID NOs: 1 to 23, or a nucleotide sequence in which u is t in the nucleotide sequence, a polynucleotide comprising the complementary sequence thereof, these
- the above-mentioned kit is a polynucleotide that hybridizes under stringent conditions with a polynucleotide of the above, or a fragment comprising two or more of those 16 or more consecutive bases.
- the above-described kit is provided in which the polynucleotide is packaged in different containers separately or in any combination.
- the present invention provides a prediction of therapeutic sensitivity to trastuzumab in breast cancer patients, comprising two or more of the polynucleotides (a) to (e) above, variants, derivatives thereof, and / or fragments thereof.
- a DNA chip for use is provided.
- the DNA chip further includes one or two of the polynucleotides shown in the above (f) to (j), variants thereof, derivatives thereof, and / or fragments thereof.
- two or more expression levels of the target nucleic acid in a sample derived from a breast cancer patient of the polynucleotide of the above composition are measured, and the therapeutic sensitivity to trastuzumab in the breast cancer patient is predicted and determined in vitro.
- a method is provided for predicting treatment sensitivity to trastuzumab in breast cancer patients, including evaluating.
- the above method uses the kit according to the second aspect of the present invention.
- the above method uses the DNA chip according to the third aspect of the present invention.
- the present invention further provides a breast cancer patient using the composition described in any of the above, the kit described in any of the above, the DNA chip described in any of the above, or a combination thereof.
- a first step of measuring the expression level of a target nucleic acid in a plurality of samples known to have therapeutic sensitivity to trastuzumab in vitro the expression level of the target nucleic acid obtained in the first step
- the third step of measuring the expression level of the target nucleic acid in vitro as in the first step, the expression level of the target nucleic acid obtained in the third step in the discriminant obtained in the second step Calculated from A fourth step of substituting the gene expression level in a breast cancer lesion and predicting, determining or evaluating the possibility that a breast cancer patient exhibits therapeutic sensitivity to tras
- the present invention further provides that the breast cancer patient of any of the above compositions, any of the above kits, or any of the above DNA chips, or a combination thereof is therapeutically sensitive to trastuzumab.
- the present invention provides use of a composition and a method for predicting therapeutic sensitivity to trastuzumab in breast cancer patients for predicting, determining or evaluating the possibility of having in vitro.
- polynucleotide is used for nucleic acids including both RNA and DNA.
- the DNA includes any of cDNA, genomic DNA, and synthetic DNA.
- the RNA includes total RNA, mRNA, rRNA, miRNA, siRNA, snoRNA, snRNA, non-coding RNA, and synthetic RNA.
- the polynucleotide is used interchangeably with the nucleic acid.
- RNA and double-stranded DNA include not only RNA and double-stranded DNA, but also each single-stranded DNA such as positive strand (or sense strand) or complementary strand (or antisense strand) constituting the same. It is intended to be used.
- the length is not particularly limited.
- “gene” refers to double-stranded DNA containing human genomic DNA, single-stranded DNA containing cDNA (positive strand), and single-stranded DNA having a sequence complementary to the positive strand. All of DNA (complementary strand) and fragments thereof, and human genome are included.
- the “gene” is not limited to the “gene” represented by a specific base sequence (or SEQ ID NO), but also RNA having a biological function equivalent to RNA encoded by these, for example, homologs (ie, homologs or Orthologs), variants such as genetic polymorphisms, and “nucleic acids” encoding derivatives.
- nucleic acid encoding such a homologue, variant or derivative is any one of the nucleotide sequences represented by SEQ ID NOs: 1 to 23 under the stringent conditions described later,
- a “nucleic acid” having a base sequence that hybridizes with a complementary sequence of a base sequence in which u is t in the base sequence can be mentioned.
- the “gene” does not ask whether the functional region is different, and may include, for example, an expression control region, a coding region, an exon, or an intron.
- transcript refers to RNA synthesized using a DNA sequence of a gene as a template.
- RNA polymerase is synthesized in such a manner that RNA polymerase binds to a site called a promoter located upstream of the gene and ribonucleotide is bound to the 3 ′ end so as to be complementary to the DNA base sequence.
- This RNA includes not only the gene itself but also the entire sequence from the transcription start point to the end of the poly A sequence, including the expression control region, coding region, exon or intron.
- microRNA is a protein complex that is transcribed as a hairpin-like RNA precursor, cleaved by a dsRNA cleaving enzyme having RNase III cleaving activity, and called RISC. 16 to 25 bases, preferably 16 to 25 bases, more preferably 20 to 25 bases non-coding RNA involved in the translational repression of mRNA.
- miRNA used herein contains not only “miRNA” represented by a specific nucleotide sequence (or sequence number) but also a precursor of the “miRNA” (pre-miRNA or pri-miRNA), Also included are miRNAs that are biologically equivalent to the miRNAs encoded by them, eg, homologs (ie, homologs or orthologs), variants such as genetic polymorphisms, and derivatives that encode derivatives.
- RNA encoding such precursor, homologue, variant or derivative
- miRBBase release 16 http://www.mirbase.org/
- miRNA having a base sequence that hybridizes with a complementary sequence of any one of the specific base sequences represented by SEQ ID NOs: 1 to 23 under a gentle condition.
- the “probe” includes a polynucleotide used for specifically detecting RNA produced by gene expression or a polynucleotide derived therefrom and / or a polynucleotide complementary thereto.
- the “primer” includes a continuous polynucleotide and / or a complementary polynucleotide that specifically recognizes and amplifies RNA generated by gene expression or a polynucleotide derived therefrom.
- a complementary polynucleotide is a full-length sequence of a polynucleotide comprising a base sequence defined by a sequence number or a base sequence in which u is t in the base sequence, or a portion thereof It means a polynucleotide having a base-complementary relationship based on a base pair relationship such as A: T (U), G: C with respect to a sequence (for convenience sake, this is referred to as a positive strand).
- a complementary strand is not limited to the case where it forms a completely complementary sequence with the target positive strand base sequence, but has a complementary relationship that allows hybridization with the target normal strand under stringent conditions. There may be.
- stringent conditions means that the probe is detectable to a greater extent than for other sequences (eg, average of background measurements + standard error of background measurements ⁇ measurement of 2 or more). The condition for hybridizing to the target sequence. Stringent conditions are sequence-dependent and depend on the environment in which hybridization is performed. By controlling the stringency of the hybridization and / or wash conditions, target sequences that are 100% complementary to the probe can be identified.
- variant refers to a natural variant caused by polymorphism, mutation, or the like, or the nucleotide sequence represented by SEQ ID NOs: 1 to 23, or u in the nucleotide sequence in the case of nucleic acid.
- a mutant comprising a deletion, substitution, addition or insertion of 1, 2 or 3 or more, preferably 1 or 2 bases in the base sequence of t, or a partial sequence thereof, or miRNAs of SEQ ID NOs: 1 to 23 Including deletion, substitution, addition or insertion of one or more, preferably one or several bases in the base sequence of the precursor RNA, or in the base sequence where u is t in the base sequence, or in a partial sequence thereof
- “several” means about 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3 or 2 Means an integer.
- a mutant can be prepared using a well-known technique such as site-directed mutagenesis or PCR-based mutagenesis.
- % identity refers to the same per total number of bases (including the number of gaps if there is a gap) when two sequences are aligned (aligned) for maximum matching. This refers to the percentage (%) of the number of bases, and can be determined with or without introducing a gap using the above-mentioned BLAST or FASTA protein / gene search system (Karlin, S. et al. 1993, Proc. Natl. Acad. Sci. U. S. A., 90, p. 5873-5877; Altschul, SF, et al., 1990, Journal of Molecular Biology, 215, p.403-410; Pearson, WR et al., 1988, Proc. Acad. Sci. U. S. A., 85 vol, p.2444-2448).
- the term “derivative” refers to a modified nucleic acid, a non-limiting group such as a labeled derivative such as a fluorophore, a modified nucleotide (for example, a halogen, an alkyl such as methyl, an alkoxy such as methoxy, a group such as thio, carboxymethyl, etc.
- a derivative containing PNA peptide nucleic acid; Nielsen, PE, etc.). et al., 1991, Science 254: 1497), LNA (locked nucleic acid; Obika, S. et al., 1998, Tetrahedron Lett. 39: 5401) and the like.
- prediction, determination, detection or diagnostic composition refers to the presence or absence of breast cancer, the degree of morbidity, the presence or absence of improvement of breast cancer, the degree of improvement, and the sensitivity to breast cancer treatment. Further, it refers to a substance that is directly or indirectly used for screening candidate substances useful for prevention, amelioration, or treatment of breast cancer. This includes nucleotides, oligonucleotides and polynucleotides capable of specifically recognizing and binding to genes whose expression varies in vivo, particularly in breast tissue, associated with breast cancer morbidity.
- nucleotides, oligonucleotides and polynucleotides are used as probes for detecting the gene expressed in vivo, in tissues or cells based on the above properties, and for amplifying the gene expressed in vivo. It can be effectively used as a primer.
- prediction refers to prediction, determination, evaluation, detection, or diagnosis.
- a “sample” that is a target of prediction, determination, evaluation, detection, or diagnosis refers to a tissue or a biomaterial in which the gene of the present invention changes in expression as a result of breast cancer occurrence and the therapeutic effect on breast cancer. . Specifically, it refers to breast tissue and surrounding vessels, lymph nodes and organs, organs suspected of metastasis, skin, and body fluids such as blood, urine, saliva, sweat, and tissue exudates, as well as stool and hair. .
- FFPE specimen refers to a formalin-fixed paraffin-embedded specimen in which a living tissue is fixed with formalin and embedded with paraffin.
- trastuzumab refers to the property that the progression of breast cancer is suppressed by treatment with trastuzumab.
- the method for detecting the progression of the disease state may be a pathological study, or may be a clinical study such as evaluation of the size of a tumor by image diagnosis or the condition of a patient.
- one or more anticancer agents other than trastuzumab may be used in combination with trastuzumab.
- anticancer agent refers to an agent used in combination with trastuzumab for breast cancer drug therapy.
- Anticancer agents include, for example, alkylating agents such as cyclophosphamide and thiotepa, 5-FU antimetabolites such as fluorouracil, tegafur, carmofur, doxyfluridine, capecitabine, antimetabolites such as methotrexate and gemcitabine, adriamycin, Anthracycline drugs such as epirubicin and pirarubicin, anthraquinone drugs such as mitozantrone, anticancer antibiotics such as mitomycin C, binalkaloids such as pinolerubin, taxanes such as paclitaxel and docetaxel, topoisomerase I inhibitors such as irinotecan, Antiestrogens such as tamoxifen and toremifene, aromatase inhibitors such as fadrozole,
- order refers to Rainer, B. et al. Et al., FEBS Letters, 573, p. This refers to the rank statistic calculated in the statistical test considering the false positive rate shown in 83-92.
- AUROC value means the area under the receiver operating characteristic curve (ROC curve), and is used to predict, determine, evaluate, detect or diagnose a patient into a positive group and a negative group It becomes an index to measure the accuracy of the method.
- ROC curve receiver operating characteristic curve
- LOOCV method Leave-one-out crossvalidation method
- miR-1234 gene refers to the hsa-miR-1234 gene (miRbase Accession No. MIMAT0005589) described in SEQ ID NO: 1, other species homologs or orthologs, etc. Is included.
- the hsa-miR-1234 gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-513a-5p gene or “miR-513a-5p” refers to the hsa-miR-513a-5p gene (miRbase Accession No. MIMAT0002877) described in SEQ ID NO: 2 and others. Species homologs or orthologs are included.
- the hsa-miR-513a-5p gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-494 gene refers to the hsa-miR-494 gene (miRbase Accession No. MIMAT0002816) described in SEQ ID NO: 3, other species homologs or orthologs, etc. Is included.
- the hsa-miR-494 gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-26a gene refers to the hsa-miR-26a gene (miRbase Accession No. MIMAT00000082) described in SEQ ID NO: 4, other species homologs or orthologs, etc. Is included.
- the hsa-miR-26a gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- let-7a gene refers to the hsa-let-7a gene (miRbase Accession No. MIMAT00000062) described in SEQ ID NO: 5, and other species homologs or orthologs, etc. Is included.
- the hsa-let-7a gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- let-7b gene refers to the hsa-let-7b gene (miRbase Accession No. MIMAT00000063) described in SEQ ID NO: 6, other species homologs or orthologs, etc. Is included.
- the hsa-let-7b gene is described in Lagos-Quintana, M. et al. Et al., 2001, Science, 294, p. 853-858.
- let-7g gene refers to the hsa-let-7g gene (miRbase Accession No. MIMAT000014) described in SEQ ID NO: 7, other species homologues or orthologues, etc. Is included.
- the hsa-let-7g gene is disclosed in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-940 gene refers to the hsa-miR-940 gene (miRbase Accession No. MIMAT0004983) described in SEQ ID NO: 8, and other species homologs or orthologs, etc. Is included.
- the hsa-miR-940 gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-1470 gene refers to the hsa-miR-1470 gene (miRbase Accession No. MIMAT0007348) described in SEQ ID NO: 9, and other species homologs or orthologs, etc. Is included.
- the hsa-miR-1470 gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-125a-5p gene or “miR-125a-5p” refers to the hsa-miR-125a-5p gene (miRbase Accession No. MIMAT000043) described in SEQ ID NO: 10 and others. Species homologs or orthologs are included.
- the hsa-miR-125a-5p gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-200c gene refers to the hsa-miR-200c gene (miRbase Accession No. MIMAT000017) described in SEQ ID NO: 11, other species homologs or orthologs, etc. Is included.
- the hsa-miR-200c gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- let-7e gene refers to the hsa-let-7e gene (miRbase Accession No. MIMAT00000066) described in SEQ ID NO: 12, and other species homologs or orthologs, etc. Is included.
- the hsa-let-7e gene is disclosed in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-1228 gene refers to the hsa-miR-1228 gene (miRbase Accession No. MIMAT0005583) described in SEQ ID NO: 13, other species homolog or ortholog, etc. Is included.
- the hsa-miR-1228 gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- let-7c gene refers to the hsa-let-7c gene (miRbase Accession No. MIMAT0000064) described in SEQ ID NO: 14, and other species homologs or orthologs, etc. Is included.
- the hsa-let-7c gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-1229 gene refers to the hsa-miR-1229 gene (miRbase Accession No. MIMAT0005584) described in SEQ ID NO: 15, other species homologs or orthologs, etc. Is included.
- the hsa-miR-1229 gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-205 gene refers to the hsa-miR-205 gene (miRbase Accession No. MIMAT0000266) described in SEQ ID NO: 16, other species homolog or ortholog, etc. Is included.
- the hsa-miR-205 gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-145 gene refers to the hsa-miR-145 gene (miRbase Accession No. MIMAT000037) described in SEQ ID NO: 17, other species homologs or orthologs, etc. Is included.
- the hsa-miR-145 gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-181a gene refers to the hsa-miR-181a gene (miRbase Accession No. MIMAT0000256) described in SEQ ID NO: 18, other species homolog or ortholog, etc. Is included.
- the hsa-miR-181a gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- miR-191 gene refers to the hsa-miR-191 gene (miRbase Accession No. MIMAT000040) described in SEQ ID NO: 19, and other species homologs or orthologs, etc. Is included.
- the hsa-miR-191 gene is disclosed in Lagos-Quintana, M. et al. Et al., 2001, Science, 294, p. 853-858.
- miR-125b gene refers to the hsa-miR-125b gene (miRbase Accession No. MIMAT000023) described in SEQ ID NO: 20, and other species homologs or orthologs, etc. Is included.
- the hsa-miR-125b gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- the term “miR-92a gene” or “miR-92a” refers to the hsa-miR-92a gene (miRbase Accession No. MIMAT00000092) described in SEQ ID NO: 21, other species homologs or orthologs, etc. Is included.
- the hsa-miR-92a gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- let-7d gene refers to the hsa-let-7d gene (miRbase Accession No. MIMAT0000065) described in SEQ ID NO: 22, and other species homologs or orthologs, etc. Is included.
- the hsa-let-7d gene is described in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- the term “miR-23a gene” or “miR-23a” refers to the hsa-miR-23a gene (miRbase Accession No. MIMAT00000078) described in SEQ ID NO: 23, other species homologs or orthologs, etc. Is included.
- the hsa-miR-23a gene is disclosed in Lagos-Quintana, M .; Et al., 2001, Science, 294, p. 853-858.
- the present invention relates to a composition useful for predicting (or determining, evaluating, detecting or diagnosing) therapeutic sensitivity of a breast cancer patient to trastuzumab, and predicting (or determining) the therapeutic sensitivity of a breast cancer patient to trastuzumab using the composition.
- (Evaluation, detection or diagnosis) method and a kit for predicting (or determining, evaluating, detecting or diagnosing) treatment sensitivity of a breast cancer patient to trastuzumab using the composition It has the special effect of providing a predictive (or judgment evaluation, detection or diagnosis) method that is specific and highly predictive for treatment sensitivity to trastuzumab, and that is quick and simple.
- FIG. 3 shows the prediction rate of treatment sensitivity to trastuzumab in breast cancer patients when the polynucleotides of SEQ ID NOs: 1 to 23 corresponding to the genes listed in Table 1 are used in combination.
- the vertical axis is the AUROC value for predicting treatment sensitivity to trastuzumab in breast cancer patients, and the horizontal axis is SEQ ID NOS: 1 to 23 corresponding to the genes listed in Table 1, using the SVM method by LOOCV method for 35 breast cancer patients
- the total number of genes required to predict treatment sensitivity to trastuzumab in patients with breast cancer is shown respectively.
- the LOOCV method selection result of 20 genes used for the treatment sensitivity prediction with respect to trastuzumab of the breast cancer patient using the SVM method selected by the procedure of FIG. 1 is shown.
- the row direction of the table shown in FIG. 3 shows 35 types of teacher data sets composed of combinations of 34 cases of learning data sets and one test data.
- the column direction indicates the sequence number of the predictive gene selected in each teacher data set.
- the numbers in the table indicate the priority order of which gene is selected when a prediction gene is selected in each teacher data set.
- Target Nucleic Acid for Breast Cancer includes, for example, Human genes comprising the nucleotide sequences represented by SEQ ID NOs: 1 to 23 (ie, miR-1234, miR-513a-5p, miR-494, miR-26a, let-7a, let-7b, let-7g, respectively) miR-940, miR-1470, miR-125a-5p, miR-200c, let-7e, miR-1228, let-7c, miR-1229, miR-205, miR-145, miR-181a, miR-191, miR-125b, miR-92a, let-7d, and miR-2 a), their homologues, or variants thereof, or derivatives thereof.
- target nucleic acids are human genes comprising the nucleotide sequences represented by SEQ ID NOs: 1 to 23, their transcripts, more preferably the transcripts, ie, miRNA, its precursor RNA, pri-miRNA and pre-miRNA. is there.
- any of the above genes that are targets for predicting the therapeutic sensitivity of a breast cancer patient to trastuzumab is obtained from a breast cancer lesion in a breast cancer patient that is less therapeutically sensitive to trastuzumab than a breast cancer patient that is sensitive to trastuzumab.
- the gene expression level obtained is decreased, reduced, increased or increased (see Table 1 in the Examples described later).
- the first target nucleic acid is the miR-1234 gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- the expression of the miR-1234 gene or its transcript can be a predictive marker for therapeutic sensitivity to trastuzumab in breast cancer patients.
- the second target nucleic acid is a miR-513a-5p gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. So far, there is no known report that the expression of the miR-513a-5p gene or its transcription product can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the third target nucleic acid is a miR-494 gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- the expression of the miR-494 gene or a transcript thereof can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the fourth target nucleic acid is the miR-26a gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- the expression of the miR-26a gene or a transcript thereof can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the fifth target nucleic acid is the let-7a gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. It has been known that the expression level of the let-7a gene or its transcription product is decreased in breast cancer patients (Patent Document 1), but it can be a predictive marker for treatment sensitivity of breast cancer patients to trastuzumab. No reports are known.
- the sixth target nucleic acid is a let-7b gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- let-7b gene or its transcript is decreased in breast cancer patients (Patent Document 1), but it can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients. No reports are known.
- the seventh target nucleic acid is a let-7g gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. So far, there is no known report that expression of the let-7g gene or its transcription product can be a predictive marker of therapeutic sensitivity to trastuzumab in breast cancer patients.
- the eighth target nucleic acid is a miR-940 gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- the expression of the miR-940 gene or a transcript thereof can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the ninth target nucleic acid is a miR-1470 gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- the expression of the miR-1470 gene or a transcript thereof can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the tenth target nucleic acid is a miR-125a-5p gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. It has been known so far that an increase in the expression level of the miR-125a gene or a transcription product thereof decreases the expression level of the Her2 protein that is the target protein of trastuzumab (Non-patent Document 5). There are no known reports that the amount predicts therapeutic sensitivity to trastuzumab in Her2 positive breast cancer patients.
- the eleventh target nucleic acid is a miR-200c gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- a miR-200c gene or its transcript is decreased in breast cancer patients (Patent Document 2), but it can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients. No reports are known.
- the twelfth target nucleic acid is a let-7e gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- expression of the let-7e gene or its transcription product can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the thirteenth target nucleic acid is a miR-1228 gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- the expression of the miR-1228 gene or its transcript can be a predictive marker for the treatment sensitivity of breast cancer patients to trastuzumab.
- the 14th target nucleic acid is a let-7c gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. So far, there is no known report that the expression of the let-7c gene or its transcription product can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the fifteenth target nucleic acid is a miR-1229 gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. To date, there are no reports that the expression of the miR-1229 gene or its transcript can be a predictive marker for therapeutic sensitivity to trastuzumab in breast cancer patients.
- the sixteenth target nucleic acid is a miR-205 gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. So far, there is no known report that the expression of miR-205 gene or its transcription product can be a predictive marker of treatment sensitivity to trastuzumab in breast cancer patients.
- the 17th target nucleic acid is a miR-145 gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- miR-145 gene or its transcript is decreased in breast cancer patients (Patent Document 3), but it can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients. No reports are known.
- the 18th target nucleic acid is a miR-181a gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- the expression of the miR-181a gene or a transcript thereof can be a predictive marker for therapeutic sensitivity to trastuzumab in breast cancer patients.
- the nineteenth target nucleic acid is a miR-191 gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. So far, there is no known report that the expression of the miR-191 gene or its transcription product can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the twentieth target nucleic acid is a miR-125b gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. It has been known so far that an increase in the expression level of the miR-125b gene or a transcription product thereof decreases the expression level of the Her2 protein that is the target protein of trastuzumab (Non-patent Document 5). There are no known reports that the amount predicts therapeutic sensitivity to trastuzumab in Her2 positive breast cancer patients.
- the 21st target nucleic acid is a miR-92a gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- the expression of the miR-92a gene or a transcript thereof can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the 22nd target nucleic acid is a let-7d gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof.
- expression of the let-7d gene or its transcription product can be a predictive marker for treatment sensitivity to trastuzumab in breast cancer patients.
- the 23rd target nucleic acid is a miR-23a gene, a homologue thereof, a transcription product thereof, or a mutant or derivative thereof. To date, there has been no report that the expression of the miR-23a gene or its transcript can be a predictive marker for therapeutic sensitivity to trastuzumab in breast cancer patients.
- a nucleic acid composition that can be used to predict therapeutic sensitivity to trastuzumab in breast cancer patients is human nucleic acid as a target nucleic acid for therapeutic sensitivity to trastuzumab in breast cancer patients.
- miR-1234 miR-513a-5p, miR-494, miR-26a, let-7a, let-7b, let-7g, miR-940, miR-1470, miR-125a-5p, miR-200c, let-7e, miR-1228, let-7c, miR-1229, miR-205, miR-145, miR-181a, miR-191, miR-125b, miR-92a, let-7d, and miR-23a Homologues of, or their variants Alternatively, it is possible to qualitatively and / or quantitatively determine the presence of a derivative, the amount of gene expression or the amount present.
- the composition of the present invention is used to measure and compare the expression levels of target nucleic acids in breast cancer tissues of breast cancer patients with high therapeutic sensitivity to trastuzumab and breast cancer tissues of breast cancer patients with low therapeutic sensitivity to trastuzumab, respectively. Can be used effectively.
- a composition that can be used in the present invention includes a polynucleotide group comprising a base sequence represented by SEQ ID NOs: 1 to 23 in a sample of a patient suffering from breast cancer, or a base sequence in which u is t in the base sequence, and 16 in the complementary polynucleotide group, the polynucleotide group that hybridizes with DNA consisting of the base sequence complementary to the base sequence under stringent conditions, the complementary polynucleotide group, and the base sequence of those polynucleotide groups As described above, it preferably includes a combination of two or more polynucleotides selected from the group of polynucleotides containing 21 to 24 consecutive bases. These polynucleotides can be used as probes and primers for detecting the predictive marker, which is a target nucleic acid.
- composition of the present invention can contain two or more polynucleotides selected from the group consisting of the following polynucleotides, variants thereof, derivatives thereof, or fragments thereof.
- a polynucleotide comprising the nucleotide sequence represented by SEQ ID NOs: 1 to 23, or a nucleotide sequence in which u is t in the nucleotide sequence, a variant thereof, a derivative thereof, or a nucleotide sequence comprising 16 or more consecutive bases fragment.
- a polynucleotide comprising the base sequence represented by SEQ ID NOs: 1 to 23, or a base sequence in which u is t in the base sequence.
- a polynucleotide comprising the nucleotide sequence represented by SEQ ID NO: 1-9, SEQ ID NO: 11-19, and SEQ ID NO: 21-23, or a nucleotide sequence wherein u is t in the nucleotide sequence, a variant thereof, A derivative thereof, or a fragment thereof comprising 16 or more consecutive bases.
- a polynucleotide comprising the base sequences represented by SEQ ID NOs: 1 to 9, SEQ ID NOs: 11 to 19, and SEQ ID NOs: 21 to 23, or a base sequence in which u is t in the base sequences.
- Poly comprising a nucleotide sequence complementary to the nucleotide sequence represented by SEQ ID NO: 1 to 9, SEQ ID NO: 11 to 19, and SEQ ID NO: 21 to 23, or the nucleotide sequence in which u is t in the nucleotide sequence nucleotide.
- any of the polynucleotides consisting of a base sequence complementary to each of the base sequences in which u is t in the base sequences represented by SEQ ID NOs: 1 to 9, SEQ ID NOs: 11 to 19, and SEQ ID NOs: 21 to 23 A polynucleotide that hybridizes with a polynucleotide under the stringent conditions, or a fragment thereof comprising 16 or more consecutive bases.
- a polynucleotide comprising the nucleotide sequence represented by SEQ ID NO: 10 and SEQ ID NO: 20, or a nucleotide sequence in which u is t in the nucleotide sequence, a variant thereof, a derivative thereof, or 16 or more consecutive bases Its fragments including.
- a polynucleotide comprising the base sequence represented by SEQ ID NO: 10 and SEQ ID NO: 20, or the base sequence in which u is t in the base sequence.
- (10) a polynucleotide comprising a base sequence complementary to the base sequence represented by SEQ ID NO: 10 and SEQ ID NO: 20 or the base sequence in which u is t in the base sequence, a variant thereof, a derivative thereof, or Its fragments containing 16 or more consecutive bases.
- a polynucleotide comprising a nucleotide sequence complementary to the nucleotide sequences represented by SEQ ID NO: 10 and SEQ ID NO: 20, or a nucleotide sequence in which u is t in the nucleotide sequence.
- polynucleotide fragments (1) to (12) are each a nucleotide sequence of each polynucleotide or a nucleotide sequence of each mutant or derivative.
- the number of bases in the range of 18-24, 21-24, etc. can be included, but is not limited thereto.
- Any of the above polynucleotides or fragments thereof used in the present invention may be DNA or RNA.
- the polynucleotide as the composition of the present invention can be prepared by using general techniques such as a DNA recombination technique, a PCR method, and a method using a DNA / RNA automatic synthesizer.
- the polynucleotide constituting the composition of the present invention can be chemically synthesized using an automatic DNA synthesizer.
- an automatic DNA synthesizer In general, the phosphoramidite method is used for this synthesis, and single-stranded DNA corresponding to full-length microRNA can be automatically synthesized by this method.
- Automatic DNA synthesizers are commercially available from, for example, Polygen, Life Technologies.
- the polynucleotide of the present invention can also be prepared by a cDNA cloning method.
- a cDNA cloning method for example, microRNA Cloning Kit Wako (Wako Pure Chemical Industries) can be used as the cDNA cloning technique.
- the present invention also relates to a treatment for trastuzumab in breast cancer patients, comprising two or more of the same polynucleotides, variants and / or fragments thereof as those contained in the composition of the present invention.
- a sensitivity prediction kit is provided.
- the kit of the present invention comprises two or more polynucleotides selected from the polynucleotides described in 2 above, variants thereof, derivatives thereof, and / or fragments thereof.
- variants and derivatives include those defined above.
- the kit of the present invention comprises a polynucleotide comprising the nucleotide sequence represented by SEQ ID NO: 1-9, SEQ ID NO: 11-19, and SEQ ID NO: 21-23, or a nucleotide sequence wherein u is t in the nucleotide sequence, Two or more of polynucleotides containing complementary sequences, polynucleotides that hybridize under stringent conditions with these polynucleotides, or fragments of these polynucleotides, variants thereof, or derivatives thereof can be included.
- the kit of the present invention further comprises a polynucleotide comprising the nucleotide sequences represented by SEQ ID NO: 10 and SEQ ID NO: 20, or a nucleotide sequence wherein u is t in the nucleotide sequence, a polynucleotide comprising the complementary sequence thereof, It may further comprise one or two of a polynucleotide that hybridizes with the polynucleotide under stringent conditions, or a fragment of those polynucleotides.
- the polynucleotide fragment that can be included in the kit of the present invention is, for example, two or more DNAs selected from the group consisting of the following (1) to (2): (1) In the base sequence represented by SEQ ID NOs: 1 to 9, SEQ ID NOs: 11 to 19, and SEQ ID NOs: 21 to 23, the base sequence in which u is t or a complementary sequence thereof includes 16 or more consecutive bases DNA.
- the base sequence in which u is t or a complementary sequence thereof includes 16 or more consecutive bases
- a DNA further comprising 16 or more consecutive bases in the base sequence represented by SEQ ID NO: 10 and SEQ ID NO: 20 in which u is t or a complementary sequence thereof.
- the polynucleotide is a base sequence represented by any one of SEQ ID NOs: 1 to 9, SEQ ID NOs: 11 to 19, and SEQ ID NOs: 21 to 23, or a base sequence in which u is t in the base sequence
- a polynucleotide comprising the complementary sequence thereof, a polynucleotide that hybridizes with these polynucleotides under stringent conditions, or a fragment comprising 16 or more, preferably 21 to 24 consecutive bases thereof. It is.
- the kit of the present invention comprises, in addition to the above-mentioned polynucleotide, the base sequence represented by SEQ ID NO: 10 and SEQ ID NO: 20, or the base sequence in which u is t in the base sequence It further includes a polynucleotide, a polynucleotide comprising a complementary sequence thereof, a polynucleotide that hybridizes with these polynucleotides under stringent conditions, or a fragment containing 16 or more, preferably 21 to 24 consecutive bases thereof. be able to.
- the present invention also measures two or more gene expression levels in breast cancer tissues of breast cancer patients calculated from the gene expression levels of the same polynucleotides, variants and / or fragments thereof as those contained in the composition of the present invention.
- a kit for predicting therapeutic sensitivity to trastuzumab in breast cancer patients is provided.
- the size of the fragment of the polynucleotide is, for example, the total number of bases of 16 to 16 consecutive sequences in the base sequence of each of the above polynucleotides or the base sequence of each of the above mutants or derivatives.
- the number of bases ranges from 24, 18 to 24, 21 to 24 bases, and the like.
- the kit of the present invention includes, in addition to the above-described polynucleotide of the present invention, a variant thereof, or a fragment thereof, a known or future-found polynucleotide that enables prediction of therapeutic sensitivity to trastuzumab in breast cancer patients. be able to.
- polynucleotides, variants or fragments thereof contained in the kit of the present invention are packaged individually or in any combination in different containers.
- DNA chip The present invention further includes the same polynucleotide (or the polynucleotide described in the composition of Section 2 and / or the kit of Section 3), mutation, and the like included in the composition and / or kit of the present invention.
- a DNA chip for predicting therapeutic sensitivity to trastuzumab in breast cancer patients including a body, a fragment, and a combination thereof.
- the substrate of the DNA chip is not particularly limited as long as DNA can be solid-phased, and examples thereof include a slide glass, a silicon chip, a polymer chip, and a nylon membrane. Further, these substrates may be subjected to a surface treatment such as poly L lysine coating, introduction of functional groups such as amino groups and carboxyl groups.
- the solid phase immobilization method is not particularly limited as long as it is a commonly used method, such as a method of spotting DNA using a high-density dispenser called a spotter or an arrayer, a fine droplet from a nozzle, a piezoelectric element, etc.
- a high-density dispenser called a spotter or an arrayer
- Examples include a method of spraying DNA onto a substrate using an apparatus (inkjet) ejected by the above, or a method of sequentially synthesizing nucleotides on a substrate.
- a high-density dispenser for example, put different gene solutions in each well of a plate with a large number of wells, pick up this solution with a pin (needle), and spot it on the substrate in order. by.
- genes are ejected from a nozzle, and the genes are arranged and arranged at high speed on a substrate.
- the base bonded to the substrate is protected with a functional group that can be removed by light or heat, and the functional group is removed by applying light or heat only to the base at a specific site by using a mask. Let Thereafter, the step of adding a base to the reaction solution and coupling with the base on the substrate is repeated.
- the polynucleotide to be immobilized is all the polynucleotides of the present invention described above.
- such a polynucleotide can include two or more polynucleotides selected from the group consisting of the following polynucleotides, variants thereof, derivatives thereof, or fragments thereof.
- a polynucleotide comprising the nucleotide sequence represented by SEQ ID NOs: 1 to 23, or a nucleotide sequence in which u is t in the nucleotide sequence, a variant thereof, a derivative thereof, or a nucleotide sequence comprising 16 or more consecutive bases fragment.
- a polynucleotide comprising the base sequence represented by SEQ ID NOs: 1 to 23, or a base sequence in which u is t in the base sequence.
- a polynucleotide comprising the nucleotide sequence represented by SEQ ID NO: 1-9, SEQ ID NO: 11-19, and SEQ ID NO: 21-23, or a nucleotide sequence wherein u is t in the nucleotide sequence, a variant thereof, A derivative thereof, or a fragment thereof containing 16 or more consecutive bases (4) SEQ ID NOS: 1 to 9, SEQ ID NOS: 11 to 19, and SEQ ID NOS: 21 to 23, or u in the base sequence (5) a nucleotide sequence represented by SEQ ID NO: 1 to 9, SEQ ID NO: 11 to 19, and SEQ ID NO: 21 to 23, or a nucleotide sequence wherein u is t in the nucleotide sequence, A polynucleotide comprising a base sequence complementary to, a variant thereof, a derivative thereof, or a fragment thereof containing 16 or more consecutive bases (6) SEQ ID NOs: 1 to 9, SEQ ID NOs: 11 to 19, and sequences A
- the polynucleotide of any one of (3) to (6) above A polynucleotide that hybridizes with a nucleotide under stringent conditions, or a fragment thereof comprising 16 or more consecutive bases.
- a polynucleotide comprising the nucleotide sequence represented by SEQ ID NO: 10 and SEQ ID NO: 20, or a nucleotide sequence wherein u is t in the nucleotide sequence, a variant thereof, a derivative thereof, or 16 or more consecutive bases
- the size of the fragment of the polynucleotide is, for example, the total number of bases of 16 to 16 consecutive sequences in the base sequence of each of the above polynucleotides or the base sequence of each of the above mutants or derivatives.
- the number of bases ranges from 24, 18 to 24, 21 to 24 bases, and the like.
- the DNA chip of the present invention comprises 2 nucleotides of a polynucleotide comprising the nucleotide sequence represented by SEQ ID NOs: 1 to 23, the nucleotide sequence wherein u is t in the nucleotide sequence, or a complementary sequence thereof. All of the above can be included.
- the polynucleotide to be immobilized may be any of genomic DNA, cDNA, RNA, synthetic DNA, and synthetic RNA, or may be single-stranded or double-stranded.
- the synthetic DNA and the synthetic RNA include a modified nucleic acid as described in the definition of “derivative” above.
- a method of immobilizing a previously prepared probe on a solid surface can be used.
- a polynucleotide having a functional group introduced therein is synthesized, and an oligonucleotide or polynucleotide is spotted on the surface of the surface-treated solid support and covalently bonded (for example, J. B. Lamture et al., Nucleic. Acids. Research, 1994, Vol. 22, p. 2121-2125, Z. Guo et al., Nucleic. Acids. Research, 1994, Vol. 22, p. 5465).
- a polynucleotide is covalently bound to a surface-treated solid support via a spacer or a crosslinker.
- a method is also known in which polyacrylamide gel shards are aligned on a glass surface and a synthetic polynucleotide is covalently bound thereto (G. Yershov et al., Proc. Natl. Acad. Sci. U. S. A., 1996). Year 94, p. 4913).
- an array of microelectrodes was prepared on a silica microarray, an agarose permeation layer containing streptavidin was provided on the electrode as a reaction site, and this site was positively charged to immobilize the biotinylated polynucleotide.
- an agarose permeation layer containing streptavidin was provided on the electrode as a reaction site, and this site was positively charged to immobilize the biotinylated polynucleotide.
- There is also a known method that enables precise hybridization at high speed by controlling the charge of the site RG Sosnowski et al., Proc. Natl. Acad. Sci. U. S. A., 1997). 94, pp. 1119-1123).
- a DNA chip in which the above-described diagnostic composition of the present invention is attached to a substrate as a DNA probe is used.
- Those obtained by immobilizing a gene group on a substrate generally have the names of a DNA chip and a DNA array, and the DNA chip includes a DNA macroarray and a DNA microarray. DNA array is included.
- the present invention is a method for predicting the therapeutic sensitivity of a breast cancer patient to trastuzumab in vitro using the composition, kit, DNA chip, or a combination thereof of the present invention.
- a breast cancer tissue of a breast cancer patient which is a sample collected at the time of surgery or biopsy
- the gene expression level in the sample is analyzed using a DNA chip composed of the diagnostic composition, and the therapeutic sensitivity to trastuzumab is determined. It is obtained from breast cancer tissue, which is calculated from the expression level of the target nucleic acid in the sample by comparing the gene expression level in the sample of breast cancer patient shown and the gene expression level in the sample of breast cancer patient not showing therapeutic sensitivity to trastuzumab. If the gene expression level decreased, decreased, increased, or increased, Predicting therapeutic sensitivity to vonab, wherein the target nucleic acid is detectable by a polynucleotide, variant or fragment thereof contained in the composition, kit or DNA chip .
- the present invention also provides a method for predicting in vitro the possibility of showing the therapeutic sensitivity of a breast cancer patient to trastuzumab of a composition comprising the composition of the present invention and a kit or DNA chip constituted by measuring the gene expression level of the composition. Provide use.
- compositions, a kit or a DNA chip which contains the polynucleotide of the present invention, a variant thereof or a fragment thereof, as described above, alone or in any possible combination.
- the polynucleotide, variant or fragment thereof contained in the composition, kit or DNA chip of the present invention can be used as a primer or a probe.
- Life Technologies' TaqMan (registered trademark) MicroRNA Assays or the like can be used, but is not limited to this method.
- the polynucleotide, variant or fragment thereof contained in the composition or kit of the present invention is a specific gene such as Northern blot method, Southern blot method, RT-PCR method, in situ hybridization method, Southern hybridization method, etc. In a known method for specifically detecting, it can be used as a primer or a probe according to a conventional method.
- the sample to be measured is collected from a sample of breast cancer tissue, which is a sample collected at the time of surgery or biopsy examination of a breast cancer patient, depending on the type of detection method used.
- the state of the breast cancer tissue sample collected from the breast cancer patient may be a raw state as collected, a frozen state, or a state fixed by formalin.
- formalin solution commercially available formalin (formaldehyde concentration 37%) diluted with water may be used, or the pH of the solution diluted with water adjusted to neutral with calcium carbonate, magnesium carbonate, It is also preferable to use a solution that has been diluted with a phosphate buffer to adjust the pH to neutral. Moreover, you may use the formalin solution which removed the malodor and the irritating odor and prepared the density
- the formaldehyde content in the formalin solution is preferably 1 to 30%, more preferably 2 to 20%.
- a FFPE specimen in a state where a formalin-fixed tissue is embedded in paraffin may be used as a sample.
- total RNA prepared from these samples / specimens according to a conventional method may be used, and various polynucleotides including cDNA prepared based on the RNA may also be used.
- the timing of specimen collection may be before or after the start of treatment with trastuzumab alone or with a combination of trastuzumab and an anticancer agent, but before the start of treatment with trastuzumab or a combination of trastuzumab and an anticancer agent Is desirable.
- the expression level of the nucleic acid such as the gene, RNA, and cDNA of the present invention in the collected sample can be detected or quantified using a DNA chip.
- the composition or kit of the present invention can be used as a probe for a DNA chip.
- a DNA chip is hybridized with labeled DNA or RNA prepared based on RNA collected from a sample, and a complex of the probe and labeled DNA or RNA formed by the hybridization is labeled with the labeled DNA or RNA.
- a DNA chip can be preferably used, which can evaluate the presence / absence of gene expression or the gene expression level for one sample at the same time.
- composition, kit or DNA chip of the present invention is useful for predicting therapeutic sensitivity to trastuzumab in breast cancer patients. Specifically, prediction of therapeutic sensitivity to trastuzumab in breast cancer patients using the composition, kit or DNA chip is performed using breast cancer tissue of a breast cancer patient, which is a sample collected at the time of surgery or biopsy.
- Measuring the gene expression level of the diagnostic composition comparing the gene expression level in a sample of a breast cancer patient showing therapeutic sensitivity to trastuzumab and the gene expression level in a sample of a breast cancer patient not showing therapeutic sensitivity to trastuzumab, This can be done by comparing that the gene expression level obtained from breast cancer tissue, which is calculated from the expression level of the target nucleic acid in the sample, decreases, decreases, increases or increases. In this case, the difference in gene expression includes the presence or absence of gene expression in the diagnostic composition.
- a method for predicting the therapeutic sensitivity of a breast cancer patient to trastuzumab using the composition, kit or DNA chip of the present invention is a sample obtained by collecting a part or all of a breast cancer patient sample at the time of biopsy, or by a surgically removed sample.
- the gene expression level in the sample is measured using one or a plurality of polynucleotides selected from the polynucleotide group of the diagnostic composition, a variant thereof or a fragment thereof, and trastuzumab
- a gene expression level in a sample of a breast cancer patient exhibiting therapeutic susceptibility to the gene expression level in a sample of a breast cancer patient not exhibiting a therapeutic sensitivity to trastuzumab is calculated and calculated from the expression level of the target nucleic acid in the sample.
- To compare the decrease, decrease, increase or increase of gene expression obtained from breast cancer tissue Ri includes predicting the therapeutic sensitivity to trastuzumab in breast cancer patients.
- the method of the present invention includes, for example, the following steps (a), (b) and (c): (A) contacting a sample from a breast cancer patient with the polynucleotide of the composition, kit or DNA chip of the present invention; (B) measuring the expression level of the target nucleic acid in the sample using the polynucleotide as a probe; (C) predicting treatment sensitivity of a breast cancer patient to trastuzumab based on the result of (b), Can be included.
- Examples of the sample used in the method of the present invention include a sample prepared from a sample of a breast cancer patient, for example, a breast tissue and its surrounding tissues, a tissue suspected of breast cancer, and the like. Specifically, an RNA-containing sample prepared from the tissue, or a sample containing a polynucleotide further prepared therefrom, was collected at the time of biopsy examination or partly or entirely removed from a breast cancer patient sample or by surgery. It can be recovered from the sample and prepared.
- the patient refers to a mammal suffering from or suspected of having breast cancer
- the mammal refers to, for example, but not limited to, human, monkey, dog, mouse, rat, etc. is there.
- the process can be changed according to the type of sample used as a measurement target.
- RNA When RNA is used as a measurement object, prediction of treatment sensitivity to trastuzumab in breast cancer patients is, for example, the following steps (a), (b), and (c): (A) binding RNA prepared from a sample of a breast cancer patient or a complementary polynucleotide (cDNA) transcribed therefrom with the polynucleotide of the composition, kit or DNA chip of the present invention; (B) measuring a sample-derived RNA bound to the polynucleotide or a complementary polynucleotide transcribed from the RNA using the polynucleotide as a probe; (C) predicting that a breast cancer patient shows or does not show treatment sensitivity to trastuzumab based on the measurement result of (b) above, Can be included.
- steps (a), (b), and (c) (A) binding RNA prepared from a sample of a breast cancer patient or a complementary polynucleotide (cDNA) transcribed therefrom with the
- hybridization methods can be used to predict the sensitivity of breast cancer patients to trastuzumab according to the present invention.
- hybridization method for example, Northern blot method, Southern blot method, PCR method, RT-PCR method, DNA chip analysis method, in situ hybridization method, Southern hybridization method and the like can be used.
- the diagnostic composition of the present invention is a radioisotope ( 32 P, 33 P, 35 S, etc.) or a fluorescent substance (cyan, rhodamine, fluorescamine, etc.).
- the formed duplex of the diagnostic composition (DNA) and RNA is A signal derived from a label (radioisotope or fluorescent substance) of a diagnostic composition is a radiation detector (such as BAS-1800II, Fuji Photo Film Co., Ltd.) or a fluorescence detector (STORM860, GE Healthcare) The method of detecting and measuring can be illustrated.
- a radiation detector such as BAS-1800II, Fuji Photo Film Co., Ltd.
- STORM860 GE Healthcare
- RNA and the gene expression level thereof can be detected and measured by using the polynucleotide in the diagnostic composition of the present invention as a primer.
- cDNA is prepared from RNA derived from a subject's sample according to a conventional method, and prepared based on the composition of the present invention so that each target gene region can be amplified using this as a template.
- a method of detecting the resulting double-stranded DNA by hybridizing the pair of primers (consisting of a positive strand and a reverse strand that binds to the cDNA) to cDNA, performing PCR by a conventional method, and it can.
- the above PCR is performed using a primer previously labeled with a radioisotope or a fluorescent substance, the PCR product is electrophoresed on an agarose gel, and then is detected with ethidium bromide or the like.
- Detection method by staining and detecting double-stranded DNA, and detection by hybridizing with the polynucleotide in the diagnostic composition labeled by transferring the produced double-stranded DNA to a nylon membrane or the like according to a conventional method You can take a method.
- Hybridization conditions are not limited, but for example, 30 to 60 ° C. and 1 to 24 hours in a solution containing SSC and a surfactant.
- 1 ⁇ SSC is an aqueous solution (pH 7.2) containing 150 mM sodium chloride and 15 mM sodium citrate, and the surfactant contains SDS, Triton, Tween, or the like.
- the hybridization conditions include 3 to 4 ⁇ SSC and 0.1 to 0.5% SDS.
- Washing conditions after hybridization include, for example, a solution containing 0.5 ⁇ SSC and 0.1% SDS at 30 ° C., a solution containing 0.2 ⁇ SSC and 0.1% SDS at 30 ° C., and 30 Conditions such as continuous washing with 0.05 ⁇ SSC solution at 0 ° C. can be mentioned. It is desirable that the complementary strand maintain a hybridized state with the target positive strand even when washed under such conditions.
- a complementary strand comprising a base sequence that is completely complementary to the base sequence of the target positive strand, and at least 80%, preferably at least 85%, more preferably, the strand. Examples thereof include a chain consisting of a base sequence having at least 90% homology.
- miRNA such as TaqMan trademark MicroRNA Assays, Life Technologies: LNA trademark-based MicroRNA PCR, Exiqon: Ncode trademark miRNA qRT-PCT kit, Invitrogen, etc.
- a commercially available measurement kit specially devised for measurement may be used.
- the present invention also measures the expression level of a target nucleic acid or gene in a sample derived from a breast cancer patient using the composition, kit, DNA chip, or combination thereof of the present invention, and uses the gene expression level as a teacher.
- a method for predicting treatment sensitivity to trastuzumab in breast cancer patients using the SVM method as a data set is provided.
- the present invention further uses the compositions, kits, DNA chips, or combinations thereof of the present invention to target in multiple samples that are known to show / do not show therapeutic sensitivity to trastuzumab in breast cancer patients.
- the method of the present invention includes, for example, the following steps (a), (b) and (c): (A) a step of measuring the expression level of a target gene in a sample with known therapeutic sensitivity to trastuzumab in a breast cancer patient, using the prediction (determination, detection or diagnosis) composition, kit or DNA chip according to the present invention; (B) substituting the measured value of the gene expression level measured in (a) into the formulas 2 to 5 according to the following procedure, and creating a discriminant using the SVM method; (C) The expression level of the target gene in a sample derived from a breast cancer patient is measured using the prediction (determination, detection or diagnosis) composition, kit or DNA chip according to the present invention, and the discrimination prepared in (b) Substituting them into a formula and predicting the treatment sensitivity of a breast cancer patient to trastuzumab based on the results obtained; Can be included.
- the SVM method was developed in 1995 by AT & T's V.C. It is a discriminant analysis method (The Nature of Statistical Leaning Theory, Springer, 1995) devised by Vapnik in 1995.
- a boundary surface called a hyperplane for correctly classifying the data set into a known grouping, with a specific data item of the data set with a known grouping as an explanatory variable and a grouping as a target variable.
- a discriminant for classifying the data using the boundary surface.
- the discriminant can predict the grouping by substituting the measured value of the newly given data set into the discriminant as an explanatory variable.
- the prediction result at this time may be a group to be classified, may be a probability of being classified into a group to be classified, or may be a distance from a hyperplane (for example, Hideki Aso et al., Frontier 6 of Statistical Science “Pattern Recognition”). "Statistics of learning and new concepts and methods", Iwanami Shoten (2004)).
- the explanatory variable of the discriminant formula according to the SVM method of the present invention includes a value obtained by measuring a polynucleotide selected from the polynucleotides described in Section 2 above or a fragment thereof, and specifically, the breast cancer of the present invention.
- An explanatory variable for predicting a patient's sensitivity to trastuzumab is, for example, a gene expression level selected from the group consisting of the following (1) to (2): (1) In the base sequence represented by SEQ ID NOs: 1 to 9, SEQ ID NOs: 11 to 19, and SEQ ID NOs: 21 to 23, the base sequence in which u is t or a complementary sequence thereof includes 16 or more consecutive bases Gene expression level in breast cancer tissue of breast cancer patients measured by any of DNA.
- the base sequence in which u is t or a complementary sequence thereof includes 16 or more consecutive bases
- the nucleotide sequence represented by SEQ ID NO: 10 and SEQ ID NO: 20 is measured by any of the nucleotide sequences further comprising 16 or more consecutive bases in the nucleotide sequence where u is t or its complementary sequence.
- breast cancer patients are divided into two groups, a patient group showing treatment sensitivity to trastuzumab and a patient group showing no treatment sensitivity to trastuzumab.
- a patient group showing treatment sensitivity to trastuzumab As a criterion for judging that breast cancer patients are susceptible to trastuzumab, the pathological test results after trastuzumab treatment are shown in the Japanese Breast Cancer Society, “BREAST CANCER,” indicating that the progression of breast cancer after trastuzumab treatment was suppressed.
- a data set (hereinafter referred to as a teacher data set) consisting of comprehensive gene expression levels of biological samples derived from breast cancer tissues of the two divided groups of breast cancer patients is prepared, and the gene expression levels between the two groups are clarified.
- a discriminant based on the SVM method is determined using a gene with a significant difference as an explanatory variable and the grouping as an objective variable (for example, -1 and 1) (Equation 1). At this time, the discriminant has a constraint condition defined by Equation 2, a weighting coefficient (w) and a bias constant (b) defined by Equations 3-5.
- Equations 1 to 5 at this time are expressed by the following equations.
- x represents data consisting of comprehensive gene expression levels obtained from a biological sample derived from breast cancer tissue of a breast cancer patient, and xi represents the expression level of a specific gene selected from the data.
- T is an inner product
- y is a data classification
- ⁇ is a slack variable
- Equation 3 shows the optimization problem using Lagrangian constant ⁇ that results from using Lagrange's undetermined constant method in Eq. 2.
- the expression level of the gene used in the discriminant in a biological sample derived from the breast cancer tissue of the breast cancer patient is measured, and these are expressed as xi of the discriminant.
- teacher data is used to create a judgment formula to determine whether an unknown breast cancer patient who shows treatment susceptibility to trastuzumab belongs to or does not show treatment susceptibility to trastuzumab.
- a discriminant created from the set is required.
- the gene used for the explanatory variable of the discriminant is determined as follows.
- the comprehensive data expression level of breast cancer tissue-derived biological samples from the breast cancer patient group showing therapeutic sensitivity to trastuzumab and the biological samples derived from breast cancer tissue of the breast cancer patient group showing no therapeutic sensitivity to trastuzumab which are teacher data sets
- the gene expression level as a data set and using the p-value of t-test as parametric analysis, p-value of Mann-Whitney U test as non-parametric analysis, or rank order of RankProduct method, etc.
- the magnitude of the difference in the expression level of each gene is determined.
- a discriminant using an arbitrary number of genes having a large difference in the gene expression level obtained here is created, and for this discriminant, a gene derived from a biological sample derived from a breast cancer tissue of another independent breast cancer patient By substituting the expression level into an explanatory variable, the discriminant result of this independent breast cancer patient's sensitivity to trastuzumab is determined.
- the creation of this discriminant and the determination of the prediction accuracy are repeatedly evaluated while increasing the genes one by one in descending order of gene expression level difference.
- the LOOCV method for determining the gene used in the discriminant and determining the prediction accuracy (FIG. 1). That is, first, one piece of data is extracted from the teacher data set as test data, and the rest is used as a learning data set. Then, a discriminant is created using the learning data set, and a group to which the test data belongs is predicted using the discriminant. Then, with respect to a plurality of combinations that can divide test data without duplication from the teacher data set, more preferably, prediction values of discriminants are calculated for all combinations that can divide test data without duplication. The AUROC value is obtained using the true group to which the determined predicted value and test data belong, and this is used as the prediction accuracy.
- the expression levels of the above 23 target genes are different between breast cancer patients who show therapeutic sensitivity to trastuzumab and breast cancer patients who do not show therapeutic sensitivity to trastuzumab, and breast cancer derived from breast cancer patients.
- trastuzumab 35 Her2 positive breast cancer patients were collected by breast biopsy by needle biopsy before treatment with a combination of trastuzumab and anticancer agent. After the needle biopsy, treatment with preoperative chemotherapy including trastuzumab, cyclophosphamide and docetaxel was performed.
- preoperative chemotherapy including trastuzumab, cyclophosphamide and docetaxel was performed.
- the criteria for determining the therapeutic effect of trastuzumab and these anti-cancer drugs are based on the histological therapeutic effect criteria set forth in the “Breast Cancer Handling Regulations, 16th Edition” edited by the Japanese Breast Cancer Society. When the pathological complete response to be classified was confirmed and clinically confirmed to have no lymph node metastasis, it was regarded as having therapeutic sensitivity to trastuzumab.
- Non-Patent Document 3 when using the examination method of Non-Patent Document 3, the number of patients who showed sensitivity to treatment with a combination of trastuzumab and an anticancer drug among these 35 Her2-positive breast cancer patients was It is known as 19 cases. That is, the prediction accuracy of the inspection method of Non-Patent Document 3 is 54.2%.
- Nucleic acid sequences detected by hybridization of each probe of Human miRNA Oligo chip for 35 Her2-positive breast cancer patients, ie, coverage, are converted into a logarithmic value of the digitized fluorescence intensity and converted into a logarithmic value of 2 at the bottom. MiRNA gene expression levels were obtained.
- Predictive scoring system The gene expression level of miRNA detected from total RNA derived from breast cancer tissue of 35 cases of Her2 positive breast cancer patients obtained in “1” to “3” above was obtained in section “3” above. Based on the clinical information on the presence or absence of treatment sensitivity of each patient to trastuzumab, a gene for predicting treatment sensitivity to trastuzumab was determined and the sensitivity of treatment sensitivity to trastuzumab in Her2 positive breast cancer patients using that gene was determined. Prediction accuracy was calculated using Matlab version 2011a (Mathworks). That is, according to the LOOCV method shown in FIG.
- miRNAs having a gene expression level of 5 or more in 75% or more cases were selected from the 35 Her2-positive breast cancer patient groups obtained in the above section “3”.
- one arbitrary case was divided from 35 Her2-positive breast cancer patients, and gene expression data of miRNA in this case was used as test data.
- the gene expression data of the remaining 34 cases of miRNA was used as a learning data set.
- the learning data set is divided into two groups using clinical information on the presence or absence of treatment sensitivity to trastuzumab in Her2 positive breast cancer patients as an index of grouping, and the difference between the two groups is tested on the learning data set by the RankProduct method.
- the ranks indicating the degree of involvement of each gene in the learning data set for treatment sensitivity to trastuzumab were calculated.
- a discriminant for predicting treatment sensitivity to trastuzumab using one gene having the highest ranking obtained from the RankProduct method is created using the SVM method (Equation 1 to Equation 5). Was used to predict the sensitivity of the test data to trastuzumab.
- the rank by the RankProduct method is calculated according to the above procedure, the discriminant by the SVM method is created using two or more genes having the second highest ranking, and the treatment sensitivity of the test set to trastuzumab is determined using the discriminant.
- the prediction procedure was performed for all 35 combinations by the LOOCV method, and the prediction accuracy (AUROC value) for each number of genes was determined.
- the prediction accuracy of the therapeutic sensitivity to trastuzumab is AUROC value of 0.516 for 2 genes, AUROC value of 0.664 for 3 genes, AUROC value of 0.714 for 4 genes, 5 genes
- the AUROC value is 0.674
- the AUROC value is 0.701 for 6 genes
- the AUROC value is 0.707 for 7 genes
- the AUROC value is 0.747 for 9 genes
- 9 genes When the AUROC value is 0.813 for 10 genes, the AUROC value is 0.816 for 11 genes, the AUROC value is 0.839 for 11 genes, the AUROC value is 0.842 for 12 genes, and the AUROC value for 13 genes.
- the AUROC value When the value is 0.780 and 14 genes, the AUROC value is 0.776, and when the value is 15 genes, the AUROC value is 0.757 and 16 genes. Sometimes AUROC value is 0.707, AUROC value is 0.737 for 17 genes, AUROC value is 0.849 for 18 genes, AUROC value is 0.901 for 19 genes, and 20 genes The AUROC value is 0.908 when the AUROC value is 0.951 and 21 genes, and the AUROC value is 0.885 when the 22 genes are used. The accuracy of treatment sensitivity to trastuzumab is predicted when 20 genes are used. Was maximized (FIG. 2).
- the genes selected at least once in 35 combinations are the genes of SEQ ID NOs: 1 to 23, and the number of times each of the 23 types of genes is selected in 35 combinations It became as 1. That is, the prediction accuracy according to the present invention using these 20 genes was shown to be much higher than the prediction accuracy (54.2%) by the inspection method of Non-Patent Document 3.
- the results of selection by the LOOCV method of 20 genes used for predicting treatment sensitivity to trastuzumab in breast cancer patients using the SVM method are shown in FIG.
- the numbers in the table indicate the priority order in which the gene is selected when a predictive gene is selected in each teacher data set. For example, in each of 35 types of teacher data sets, when selecting one gene that is highly involved in treatment sensitivity to trastuzumab (when the number of genes is 1 in the graph of FIG. 2), how to select a predictive gene is 35. However, all of the 35 selected genes are SEQ ID NO: 1, indicating that the accuracy of predicting treatment sensitivity to trastuzumab using SEQ ID NO: 1 is only 0.540 in AUROC value.
- a combination of 20 genes highly involved in treatment sensitivity to trastuzumab is SEQ ID NOS: 1-20, SEQ ID NOS: 1-19 and 21, SEQ ID NOS: 1-19 and 22, SEQ ID NOS: 1-19 and 23, SEQ ID NOS: 1-18, 20 and 21, SEQ ID NOS: 1-18, 20 and 22 SEQ ID NOS: 1-17 and 19-21, SEQ ID NOS: 1-17, 19, 20 and 22, SEQ ID NOS: 1-17, 19, 21 and 22, SEQ ID NOS: 1-16 and 18-21, SEQ ID NOS: 1-16 , 18, 19, 21 and 22, SEQ ID NOS: 1-15 and 17-21, SEQ ID NOS: 1-15, 17-19, 22 and 23. That is, the prediction genes used when 20 genes are selected in each teacher data set (when the number of genes is 20 in the graph of FIG. 2) are 23 genes of SEQ ID NOS: 1
- the prediction gene sequence number
- AUROC value prediction accuracy
- the number of genes showing the highest AUROC value is the number of genes of 20 in the graph of FIG. 2, and the prediction genes used at this time are shown in Table 2. There are 23 genes of SEQ ID NOs: 1 to 23.
- Her2 protein immunohistochemical staining score is 3+, or the score is 2+ and the fluorescence in situ hybridization Her2 / CEP17 ratio is From 48 cases of preoperative primary breast cancer patients different from the cases collected in Example 1 that were determined to be Her2 positive and determined to be Her2 positive by being judged to be greater than 2.2, trastuzumab and anticancer agent
- Breast cancer tissue was collected using a needle biopsy before the treatment with the combination of FFPE, and an FFPE specimen was obtained from the collected breast cancer tissue. Then, a pathological specimen of breast cancer tissue sliced to a thickness of 10 ⁇ m was obtained from the FFPE specimen.
- Her2-positive breast cancer patients were collected by breast biopsy by needle biopsy before treatment with a combination of trastuzumab and an anticancer agent. After the needle biopsy, treatment with preoperative chemotherapy including trastuzumab and fluorouracil, epirubicin, cyclophosphamide and docetaxel was performed.
- preoperative chemotherapy including trastuzumab and fluorouracil, epirubicin, cyclophosphamide and docetaxel was performed.
- the criteria for determining the therapeutic effect of trastuzumab and these anti-cancer drugs are the same as the criteria for Example 1, except for pathological specimens collected at the time of surgery. When the pathological complete response classified as Grade 3 was confirmed and clinically confirmed that there was no lymph node metastasis according to the standard of therapeutic efficacy, it was regarded as having therapeutic sensitivity to trastuzumab.
- trastuzumab and an anticancer drug among the 48 Her2-positive breast cancer patients when the test method using the test method of Non-Patent Document 3 currently used in clinical practice is used. It is known that the number of patients who showed sensitivity to the treatment by the combined use of 20 cases. That is, the prediction accuracy of the inspection method of Non-Patent Document 3 is 41.7%.
- Nucleic acid sequences detected by hybridization of each probe of Human miRNA Oligo chip for 48 Her2-positive breast cancer patients, ie, coverage, are converted into a logarithmic value with a base of 2 to convert the digitized fluorescence intensity into a gene expression level. MiRNA gene expression levels were obtained.
- Predictive scoring system The gene expression levels of miRNAs of SEQ ID NOs: 1 to 23 detected from total RNA derived from breast cancer tissues of 35 Her2-positive breast cancer patients obtained in “1” to “3” of Example 1 were performed. When two arbitrary genes selected from miRNAs of SEQ ID NOs: 1 to 23 are used by comparing between patients based on clinical information on the presence or absence of therapeutic sensitivity to trastuzumab obtained in “3” of Example 1 A predictive scoring system for predicting the treatment sensitivity of Her2 positive breast cancer patients to trastuzumab was created using Matlab version 2011a (Mathworks).
- one arbitrary case was divided from 35 Her2-positive breast cancer patients, and the miRNA gene expression data of this case was used as test data.
- the gene expression data of the remaining 34 cases of miRNA was used as a learning data set.
- the learning data set is divided into two groups using clinical information on the presence or absence of treatment sensitivity to trastuzumab in Her2 positive breast cancer patients as an index of grouping.
- any of the miRNAs of SEQ ID NOs: 1 to 23 is selected.
- a discriminant for predicting treatment susceptibility to trastuzumab using these two genes was created using the SVM method (Equation 1 to Equation 5), and using this discriminant, the treatment sensitivity to trastuzumab was predicted. .
- the above procedure was performed for all the remaining 34 combinations, and as a result, predicted values of treatment sensitivity to 35 trastuzumab were calculated, and prediction accuracy (AUROC value) for 35 patient groups was obtained. .
- AUROC values were determined for all 2 gene combinations selected from the miRNAs of SEQ ID NOS: 1 to 23 for a group of 35 cases, and 65.2% of the prediction accuracy of the test method of Non-Patent Document 3 The combination of 2 genes exceeding 1 and the prediction accuracy were obtained.
- Table 3 shows the combinations of two genes selected from the genes of SEQ ID NOS: 1 to 23 obtained in Example 1 and the prediction accuracy thereof. That is, the prediction accuracy according to the present invention for the combination of two genes in Table 3 is the prediction accuracy (54.2%) of the test method of Non-Patent Document 3 for 35 Her2-positive breast cancer patients in Example 1, and Example 2 The value is much higher than the prediction accuracy (41.7%) of the inspection method of Non-Patent Document 3 for the 48 cases of Her2-positive breast cancer patients.
- the present invention it is possible to provide a composition for predicting treatment sensitivity to trastuzumab in breast cancer patients with excellent prediction accuracy. Therefore, in order to predict treatment sensitivity to trastuzumab in breast cancer patients using trastuzumab or a combination of trastuzumab and an anticancer agent. Very useful.
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Abstract
Description
本発明は、以下の特徴を有する。
(b)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、を含むポリヌクレオチド
(c)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列からなるポリヌクレオチド、その変異体、その誘導体、又は16以上の連続した塩基を含むその断片
(d)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列を含むポリヌクレオチド
(e)前記(a)~(d)のいずれかのポリヌクレオチドとストリンジェントな条件でハイブリダイズするポリヌクレオチド、又は16以上の連続した塩基を含むその断片。
(g)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、を含むポリヌクレオチド
(h)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列からなるポリヌクレオチド、その変異体、その誘導体、又は16以上の連続した塩基を含むその断片
(i)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列を含むポリヌクレオチド
(j)前記(f)~(i)のいずれかのポリヌクレオチドとストリンジェントな条件でハイブリダイズするポリヌクレオチド、又は16以上の連続した塩基を含むその断片。
本明細書中で使用する用語は、以下の定義を有する。
1.乳ガンの標的核酸
本発明の上記定義の、乳ガン患者のトラスツズマブに対する治療感受性予測用組成物及びキットを使用して乳ガン患者のトラスツズマブに対する治療感受性を予測するためのマーカーとしての標的核酸には、例えば、配列番号1~23で表される塩基配列を含むヒト遺伝子(すなわち、それぞれ、miR-1234、miR-513a-5p、miR-494、miR-26a、let-7a、let-7b、let-7g、miR-940、miR-1470、miR-125a-5p、miR-200c、let-7e、miR-1228、let-7c、miR-1229、miR-205、miR-145、miR-181a、miR-191、miR-125b、miR-92a、let-7d、及びmiR-23a)、それらの同族体、あるいはそれらの変異体又は誘導体が含まれる。ここで、遺伝子、同族体、転写産物、変異体及び誘導体は、上記定義のとおりである。好ましい標的核酸は、配列番号1~23で表される塩基配列を含むヒト遺伝子、それらの転写産物、より好ましくは該転写産物、すなわちmiRNA、その前駆体RNAであるpri-miRNA及びpre-miRNAである。
本発明において、乳ガン患者のトラスツズマブに対する治療感受性を予測するために使用可能な核酸組成物は、乳ガン患者のトラスツズマブに対する治療感受性についての標的核酸としての、ヒト由来のmiR-1234、miR-513a-5p、miR-494、miR-26a、let-7a、let-7b、let-7g、miR-940、miR-1470、miR-125a-5p、miR-200c、let-7e、miR-1228、let-7c、miR-1229、miR-205、miR-145、miR-181a、miR-191、miR-125b、miR-92a、let-7d、及びmiR-23a、それらの同族体、あるいはそれらの変異体又は誘導体の存在、遺伝子発現量又は存在量を定性的及び/又は定量的に測定することを可能にする。
本発明はまた、本発明の組成物に含まれるものと同じポリヌクレオチド、その変異体及び/又はその断片の2以上、を含む、乳ガン患者のトラスツズマブに対する治療感受性予測用キットを提供する。
(1)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列においてuがtである塩基配列又はその相補的配列において、16以上の連続した塩基を含むDNA。
本発明はさらに、本発明の組成物及び/又はキットに含まれるものと同じポリヌクレオチド(或いは、上記の2節の組成物及び/又は3節のキットに記載されたポリヌクレオチド)、変異体、断片及びそれらの組み合わせを含む乳ガン患者のトラスツズマブに対する治療感受性予測用DNAチップを提供する。
(4)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、を含むポリヌクレオチド
(5)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列からなるポリヌクレオチド、その変異体、その誘導体、又は16以上の連続した塩基を含むその断片
(6)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列を含むポリヌクレオチド
(7)前記(3)~(6)のいずれかのポリヌクレオチドとストリンジェントな条件でハイブリダイズするポリヌクレオチド、又は16以上の連続した塩基を含むその断片。
(9)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、を含むポリヌクレオチド
(10)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列からなるポリヌクレオチド、その変異体、その誘導体、又は16以上の連続した塩基を含むその断片
(11)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列を含むポリヌクレオチド
(12)前記(8)~(11)のいずれかのポリヌクレオチドとストリンジェントな条件でハイブリダイズするポリヌクレオチド、又は16以上の連続した塩基を含むその断片。
本発明は、本発明の組成物、キット、DNAチップ、又はそれらの組み合わせを用いて、乳ガン患者のトラスツズマブに対する治療感受性をin vitroで予測する方法であって、手術時又は生検検査時に採取した試料である乳ガン患者の乳ガン組織を用いて、試料中の遺伝子発現量を該診断用組成物で構成されるDNAチップによって解析し、トラスツズマブに対する治療感受性を示す乳ガン患者の試料中の遺伝子発現量とトラスツズマブに対する治療感受性を示さない乳ガン患者の試料中の遺伝子発現量を比較して、該試料中の標的核酸の発現量から算出される、乳ガン組織から得られた遺伝子発現量が減少、低減もしくは増加、増大している場合、乳ガン患者のトラスツズマブに対する治療感受性を予測することを含み、ここで、該標的核酸が該組成物、キット又はDNAチップに含まれるポリヌクレオチド、その変異体又はその断片によって検出可能なものである、方法を提供する。
(a)乳ガン患者由来の試料を、本発明の組成物、キット又はDNAチップのポリヌクレオチドと接触させる工程、
(b)試料中の標的核酸の発現量を、上記ポリヌクレオチドをプローブとして用いて測定する工程、
(c)(b)の結果をもとに、乳ガン患者のトラスツズマブに対する治療感受性を予測する工程、
を含むことができる。
(a)乳ガン患者の試料から調製されたRNA又はそれから転写された相補的ポリヌクレオチド(cDNA)を、本発明の組成物、キット又はDNAチップのポリヌクレオチドと結合させる工程、
(b) 該ポリヌクレオチドに結合した試料由来のRNA又は該RNAから転写された相補的ポリヌクレオチドを、上記ポリヌクレオチドをプローブとして用いて測定する工程、
(c) 上記(b)の測定結果に基づいて、乳ガン患者がトラスツズマブに対する治療感受性を示すこと又は示さないことを予測する工程、
を含むことができる。
(a)乳ガン患者のトラスツズマブに対する治療感受性が既知の試料中の標的遺伝子の発現量を、本発明による予測(判定、検出又は診断)用組成物、キット又はDNAチップを用いて測定する工程、
(b)(a)で測定された遺伝子発現量の測定値を、下記の手順に従って数2~数5の式に代入し、SVM法を用いた判別式を作成する工程、
(c)乳ガン患者由来の試料中の該標的遺伝子の発現量を、本発明による予測(判定、検出又は診断)用組成物、キット又はDNAチップを用いて測定し、(b)で作成した判別式にそれらを代入して、得られた結果に基づいて乳ガン患者のトラスツズマブに対する治療感受性を予測する工程、
を含むことができる。
(1)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列においてuがtである塩基配列又はその相補的配列において、16以上の連続した塩基を含むDNAのいずれかによって測定される乳ガン患者の乳ガン組織における遺伝子発現量。
本発明を以下の実施例によってさらに具体的に説明する。しかし、本発明の範囲は、この実施例によって制限されないものとする。
Her2タンパク質の免疫組織化学的染色法のスコアが3+となること、又は前記スコアが2+であり、かつ蛍光in situハイブリダイゼーション法のHer2/CEP17比が2.2より大きいと判定されたことによってHer2陽性と判別された、インフォームドコンセントを得た35症例の手術前初発乳ガン患者から、トラスツズマブと抗ガン剤の併用による治療を行う前に針生検を用いて乳ガン組織を採取し、採取した乳ガン組織からFFPE標本を得た。そして、FFPE標本から厚さ10μmに薄切した乳ガン組織の病理標本を得た。
試料として上の「1」で得た、35症例のHer2陽性乳ガン患者の病理標本からレーザーマイクロダイセクションシステム(ライカ社)を用いて乳ガン病変部の組織を切り出した。この切出し組織から、Arcturus(登録商標) Paradise(登録商標) Plus 2 round aminoallylキット(Life Technologies社)を用いて、同社の定める手順に従ってtotal RNAを得た。
試料として上の「2」で得た35症例のHer2陽性乳ガン患者のtotal RNAを用い、オリゴDNAマイクロアレイとして、3D-Gene(登録商標) Human miRNA Oligo chip(東レ株式会社)によって、遺伝子発現量を測定した。オリゴDNAマイクロアレイの測定は、東レ株式会社が定める手順に基づいて操作し、ハイブリダイゼーションを行ったDNAマイクロアレイを3D-Gene(登録商標)スキャナー(東レ株式会社)を用いてスキャンし、画像を取得して3D-Gene(登録商標)Extraction(東レ株式会社)にて蛍光強度を数値化した。数値化された蛍光強度を、底が2の対数値に変換して遺伝子発現量とし、35症例のHer2陽性乳ガン患者に対する、Human miRNA Oligo chipの各プローブがハイブリダイゼーションによって検出した核酸配列、すなわち網羅的なmiRNAの遺伝子発現量を得た。
上の「1」~「3」で得た35症例のHer2陽性乳ガン患者の乳ガン組織由来のtotal RNAから検出されたmiRNAの遺伝子発現量を、上のセクション「3」で得た各患者のトラスツズマブに対する治療感受性の有無の臨床情報を基に患者間で比較して、トラスツズマブに対する治療感受性予測用遺伝子を決定し、その遺伝子を用いた場合のHer2陽性乳ガン患者のトラスツズマブに対する治療感受性の予測精度をMatlab version 2011a(Mathworks社)を用いて算出した。すなわち、図1に示すLOOCV法に従い、まず上のセクション「3」で得た35症例のHer2陽性乳ガン患者群のうち、75%以上の症例で遺伝子発現量が5以上となるmiRNAを選び出した。次に、35症例のHer2陽性乳ガン患者から任意の1症例を分け、この症例のmiRNAの遺伝子発現データをテストデータとした。そして、残りの34症例のmiRNAの遺伝子発現データを学習データセットとした。次に、学習データセットをHer2陽性乳ガン患者のトラスツズマブに対する治療感受性有無の臨床情報を群分けの指標として2群に分け、この学習データセットに対して、RankProduct法による2群の差の検定を行い、学習データセット中の各遺伝子のトラスツズマブに対する治療感受性への関与の高さを示す順位を算出した。次に、RankProduct法から得た順位が最も高い1種類の遺伝子を用いてトラスツズマブに対する治療感受性を予測するための判別式を、SVM法(数1~数5)を用いて作成し、この判別式を用いてテストデータのトラスツズマブに対する治療感受性を予測した。
Her2タンパク質の免疫組織化学的染色法のスコアが3+となること、又は前記スコアが2+であり、かつ蛍光in situハイブリダイゼーション法のHer2/CEP17比が2.2より大きいと判定されたことによって、Her2陽性と判別された、インフォームドコンセントを得た実施例1で収集した症例とは異なる48症例の手術前初発乳ガン患者から、トラスツズマブと抗ガン剤の併用による治療を行う前に針生検を用いて乳ガン組織を採取し、採取した乳ガン組織からFFPE標本を得た。そして、FFPE標本から厚さ10μmに薄切した乳ガン組織の病理標本を得た。
実施例1の「2」と同じく、試料として上の「1」で得た、48症例のHer2陽性乳ガン患者の病理標本からレーザーマイクロダイセクションシステム(ライカ社)を用いて乳ガン病変部の組織を切り出した。この切出し組織から、Arcturus(登録商標) Paradise(登録商標) Plus 2 round aminoallylキット(Life Technologies社)を用いて、同社の定める手順に従ってtotal RNAを得た。
実施例1の「2」と同じく、試料として上の「2」で得た48症例のHer2陽性乳ガン患者のtotal RNAを用い、オリゴDNAマイクロアレイとして、3D-Gene(登録商標) Human miRNA Oligo chip(東レ株式会社)によって、遺伝子発現量を測定した。オリゴDNAマイクロアレイの測定は、東レ株式会社が定める手順に基づいて操作し、ハイブリダイゼーションを行ったDNAマイクロアレイを3D-Gene(登録商標)スキャナー(東レ株式会社)を用いてスキャンし、画像を取得して3D-Gene(登録商標)Extraction(東レ株式会社)にて蛍光強度を数値化した。数値化された蛍光強度を、底が2の対数値に変換して遺伝子発現量とし、48症例のHer2陽性乳ガン患者に対する、Human miRNA Oligo chipの各プローブがハイブリダイゼーションによって検出した核酸配列、すなわち網羅的なmiRNAの遺伝子発現量を得た。
実施例1の「1」~「3」で得た35症例のHer2陽性乳ガン患者の乳ガン組織由来のtotal RNAから検出された配列番号1~23のmiRNAの遺伝子発現量を、実施例1の「3」で得た各患者のトラスツズマブに対する治療感受性の有無の臨床情報をもとに患者間で比較して、配列番号1~23のmiRNAから選ばれる任意の2遺伝子を用いた場合の、Her2陽性乳ガン患者のトラスツズマブに対する治療感受性を予測する予測スコアリングシステムを、Matlab version 2011a(Mathworks社)を用いて作成した。
実施例2の「1」~「3」で得た48症例のHer2陽性乳ガン患者の乳ガン組織由来のtotal RNAから検出されたmiRNAの遺伝子発現量に対して、上の「4」で作成した、配列番号1~23のmiRNAから選ばれる2遺伝子の組合せを用いて作成した予測スコアリングシステムを用いた場合の、Her2陽性乳ガン患者のトラスツズマブに対する治療感受性の予測精度をMatlab version 2011a(Mathworks社)を用いて、すべての2遺伝子の組み合わせについて決定した。
Claims (12)
- 下記の(a)~(e)に示すポリヌクレオチド、その変異体、その誘導体、又はその断片からなる群から選択される2以上のポリヌクレオチドを含む、乳ガン患者のトラスツズマブに対する治療感受性予測用組成物:
(a)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、からなるポリヌクレオチド、その変異体、その誘導体、又は16以上の連続した塩基を含むその断片
(b)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、を含むポリヌクレオチド
(c)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列からなるポリヌクレオチド、その変異体、その誘導体、又は16以上の連続した塩基を含むその断片
(d)配列番号1~9、配列番号11~19、及び配列番号21~23で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列を含むポリヌクレオチド
(e)前記(a)~(d)のいずれかのポリヌクレオチドとストリンジェントな条件でハイブリダイズするポリヌクレオチド、又は16以上の連続した塩基を含むその断片。 - 下記の(f)~(j)に示すポリヌクレオチド、その変異体、その誘導体、又はその断片からなる群から選択される1又は2をさらに含む、請求項1のいずれか1項に記載の組成物:
(f)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、からなるポリヌクレオチド、その変異体、その誘導体、又は16以上の連続した塩基を含むその断片
(g)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、を含むポリヌクレオチド
(h)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列からなるポリヌクレオチド、その変異体、その誘導体、又は16以上の連続した塩基を含むその断片
(i)配列番号10及び配列番号20で表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、に相補的な塩基配列を含むポリヌクレオチド
(j)前記(f)~(i)のいずれかのポリヌクレオチドとストリンジェントな条件でハイブリダイズするポリヌクレオチド、又は16以上の連続した塩基を含むその断片。 - 請求項1に記載の(a)~(e)に示すポリヌクレオチド、その変異体、その誘導体、及び/又はその断片の2以上を含む、乳ガン患者のトラスツズマブに対する治療感受性予測用キット。
- 請求項2に記載の(f)~(j)に示すポリヌクレオチド、その変異体、その誘導体、及び/又はその断片の1又は2をさらに含む、請求項3に記載のキット。
- 前記ポリヌクレオチドが、配列番号1~23のいずれかで表される塩基配列、もしくは該塩基配列においてuがtである塩基配列、からなるポリヌクレオチド、その相補的配列からなるポリヌクレオチド、それらのポリヌクレオチドとストリンジェントな条件でハイブリダイズするポリヌクレオチド、又はそれらの16以上の連続した塩基を含む断片である、請求項3~4に記載のキット。
- 前記ポリヌクレオチドが、別個に又は任意に組み合わせて異なる容器に包装されている、請求項3~5のいずれか1項に記載のキット。
- 請求項1に記載の(a)~(e)に示すポリヌクレオチド、その変異体、その誘導体、及び/又はその断片の2以上を含む、乳ガン患者のトラスツズマブに対する治療感受性予測用DNAチップ。
- 請求項2に記載の(f)~(j)に示すポリヌクレオチド、その変異体、その誘導体、及び/又はその断片の1又は2をさらに含む、請求項7に記載のDNAチップ。
- 請求項1~2のいずれかに記載の組成物、請求項3~6のいずれかに記載のキット、又はそれらの組み合わせを用いて、乳ガン患者由来の試料における標的核酸の発現量の2以上を測定し、乳ガン患者がトラスツズマブに対する治療感受性を発揮することの可能性をin vitroで予測、判定若しくは評価することを含む、乳ガン患者のトラスツズマブに対する治療感受性予測のための方法。
- DNAチップを用いる、請求項9に記載の方法。
- 請求項1~2のいずれかに記載の組成物、請求項3~6のいずれかに記載のキット、請求項7~8のいずれかに記載のDNAチップ、又はそれらの組み合わせを用いて、乳ガン患者がトラスツズマブに対する治療感受性を持つことが既知の複数の試料中の標的核酸の発現量をin vitroで測定する第1の工程、前記第1の工程で得られた該標的核酸の発現量を測定し、該標的核酸の発現量から算出される遺伝子発現量を教師とした判別式(サポートベクターマシン)を作成する第2の工程、乳ガン患者の手術時又は生検検査時に採取した試料中の該標的核酸の発現量を第1の工程と同様にin vitroで測定する第3の工程、前記第2の工程で得られた判別式に第3の工程で得られた該標的核酸の発現量から算出した乳ガン病変部における遺伝子発現量を代入し、該判別式から得られた結果に基づいて、乳ガン患者がトラスツズマブに対する治療感受性を持つことを予測、判定若しくは評価する第4の工程を含む、乳ガン患者のトラスツズマブに対する治療感受性予測のための方法
- 請求項1~2のいずれかに記載の組成物、請求項3~6のいずれかに記載のキット、請求項7~8のいずれかに記載のDNAチップ、又はそれらの組合せの、乳ガン患者がトラスツズマブに対する治療感受性を持つことをin vitroで予測、判定若しくは評価するための乳ガン患者のトラスツズマブに対する治療感受性予測用組成物及び方法への使用。
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JP2013512406A JP6026408B2 (ja) | 2011-04-25 | 2012-04-25 | 乳ガン患者のトラスツズマブに対する治療感受性予測用組成物及び方法 |
EP12777416.4A EP2703488B1 (en) | 2011-04-25 | 2012-04-25 | Composition and method for predicting response to trastuzumab therapy in breast cancer patients |
KR1020137029856A KR20140049984A (ko) | 2011-04-25 | 2012-04-25 | 유방암 환자의 트라스투주마브에 대한 치료 감수성 예측용 조성물 및 방법 |
US14/113,776 US9873916B2 (en) | 2011-04-25 | 2012-04-25 | Method for predicting response to trastuzumab therapy in breast cancer patients |
CN201280020542.4A CN103492566B (zh) | 2011-04-25 | 2012-04-25 | 乳癌患者对曲妥珠单抗的治疗敏感性预测用组合物和方法 |
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JP2020025471A (ja) * | 2018-08-09 | 2020-02-20 | 国立研究開発法人産業技術総合研究所 | 毒性学習装置、毒性学習方法、学習済みモデル、毒性予測装置およびプログラム |
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CN107488738B (zh) * | 2017-10-12 | 2020-04-28 | 中国医学科学院肿瘤医院 | 一种预测乳腺癌对曲妥珠单抗联合化疗治疗敏感性的生物标志物 |
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Cited By (4)
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JP2019516393A (ja) * | 2016-03-18 | 2019-06-20 | カリス サイエンス インコーポレイテッド | オリゴヌクレオチドプローブおよびその使用 |
US11332748B2 (en) | 2016-03-18 | 2022-05-17 | Caris Science, Inc. | Oligonucleotide probes and uses thereof |
US11293017B2 (en) | 2016-05-25 | 2022-04-05 | Caris Science, Inc. | Oligonucleotide probes and uses thereof |
JP2020025471A (ja) * | 2018-08-09 | 2020-02-20 | 国立研究開発法人産業技術総合研究所 | 毒性学習装置、毒性学習方法、学習済みモデル、毒性予測装置およびプログラム |
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CN103492566A (zh) | 2014-01-01 |
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US9873916B2 (en) | 2018-01-23 |
JP6026408B2 (ja) | 2016-11-16 |
CA2834430A1 (en) | 2012-11-01 |
EP2703488A1 (en) | 2014-03-05 |
KR20140049984A (ko) | 2014-04-28 |
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