WO2013024865A1 - Kras遺伝子変異型の結腸直腸癌患者に対する抗腫瘍剤及び治療効果予測方法 - Google Patents
Kras遺伝子変異型の結腸直腸癌患者に対する抗腫瘍剤及び治療効果予測方法 Download PDFInfo
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Definitions
- the present invention provides ⁇ : ⁇ , ⁇ -trifluorothymidine (FTD) and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride (TPI) in a molar ratio of 1: 0.5.
- TAS-102 The anti-tumor agent containing the anti-tumor agent contained in the drug is predicted to have a therapeutic effect sufficient for chemotherapy using the anti-tumor agent. Relates to an antitumor agent for administration to a patient.
- Chemotherapy for patients with colorectal cancer is based on chemotherapy including fluoropyrimidine antitumor agents (for example, combined use of 5-fluorouracil (5-FU) and leucovorin (LV)), and irinotecan or oxaliplatin Multi-drug combination therapy (FOLFIRI, FOLFOX, etc.) has been implemented as standard therapy, and a certain therapeutic effect has been obtained (Non-patent Document 1).
- fluoropyrimidine antitumor agents for example, combined use of 5-fluorouracil (5-FU) and leucovorin (LV)
- irinotecan or oxaliplatin Multi-drug combination therapy FOLFIRI, FOLFOX, etc.
- NCCN Clinical Practice Guidelines in Oncology NCCN GuidelinesTM; Colon Cancer (Version 3.2011), Rectal Cancer (Version 4.2011) N Engl J Med. 2008; 359 (17): 1757-65. J Clin Oncol. 2008; 26 (10): 1626-34.
- An object of the present invention is to provide a chemotherapy that has a significant life-prolonging effect and has few side effects for colorectal cancer patients.
- TAS-102 is more effective in colorectal cancer patients with a mutant KRAS gene than in wild-type patients. It has been found that by using the presence or absence of a mutation in the KRAS gene as an index, it can be determined whether or not chemotherapy using TAS-102 shows a sufficient therapeutic effect, and the present invention has been completed.
- the present invention provides the following method and antitumor agent.
- Item 1. ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride in a colorectal cancer patient comprising the following steps (1) to (2): Method for predicting the therapeutic effect of chemotherapy with an antitumor agent containing at a molar ratio of 1: 0.5: (1) a step of detecting the presence or absence of a mutation in the KRAS gene contained in a biological sample collected from the patient, and (2) if the KRAS gene is mutated as a result of the detection in the step (1), the patient Predicting that there is a high probability that the chemotherapy for the drug will have a sufficient therapeutic effect.
- Item 2 The method according to Item 1, wherein the KRAS gene mutation is a codon 12 and / or 13 mutation.
- Item 3. The method according to Item 1 or 2, wherein the colorectal cancer patient is a colorectal cancer patient who is refractory or intolerant to standard therapy.
- Item 4 According to the method of Items 1 to 3, ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride are contained at a molar ratio of 1: 0.5. ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1 for the treatment of colorectal cancer patients who are predicted to have sufficient therapeutic effect with chemotherapy using antitumor agents An antitumor agent comprising (2-iminopyrrolidinyl) methyl) uracil hydrochloride in a molar ratio of 1: 0.5;
- Item 5 According to the method of Items 1 to 3, ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride are contained at a molar ratio of 1: 0.5.
- ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- are contained at a molar ratio of 1: 0.5.
- a method for treating colorectal cancer comprising performing chemotherapy using an antitumor agent containing 2-iminopyrrolidinyl) methyl) uracil hydrochloride at a molar ratio of 1: 0.5.
- Item 6 According to the method of Items 1 to 3, ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride are contained at a molar ratio of 1: 0.5. ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro for the treatment of colorectal cancer patients who are predicted to have sufficient therapeutic effect with chemotherapy using antitumor agents Use of an antitumor agent comprising -6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride in a molar ratio of 1: 0.5.
- Item 8 Molar ratio of ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride for colorectal cancer patients with mutated KRAS gene
- Item 9 ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride for the treatment of colorectal cancer patients with a mutated KRAS gene Use of an antitumor agent containing at a molar ratio of 1: 0.5.
- the prediction method of the present invention is refractory or intolerant to standard therapies for patients with colorectal cancer (especially, traditionally poor responsiveness to anti-tumor agents and few anti-tumor agents that significantly prolong survival). In addition, it is possible to provide a chemotherapy showing a more prominent life-spanning effect on colorectal cancer patients).
- TAS-102 has been reported to have a therapeutic effect on solid cancers including colorectal cancer (Cancer Invest. 2008; 26 (8): 794-9.), The KRAS gene is mutated. It is not known that TAS-102 provides a particularly good therapeutic effect for certain colorectal cancer patients. In general, colorectal cancer patients in which the KRAS gene is mutated are known to have a shorter survival time than wild-type colorectal cancer patients. It is an unexpected effect to have a remarkable life-prolonging effect.
- the survival curve by the Kaplan-Meier method in a KRAS gene wild type is shown.
- the survival curve by the Kaplan-Meier method in a KRAS gene variant is shown.
- 2 shows a graph of relative tumor volume for each treatment group in nude mice transplanted with HCT-116 colorectal cancer strain.
- TAS-102 p.o., Day1-14 (b.i.d)
- Cetuximab i.p., Day 1, 5, 8, 12
- the prediction method of the present invention predicts whether or not chemotherapy using TAS-102 shows a sufficient therapeutic effect in colorectal cancer patients based on the presence or absence of mutations in the KRAS gene in the patients.
- the protein of the KRAS gene which is an index in the present invention, is a kind of G protein having a molecular weight of 21,000 that is localized inside the cell membrane, and is involved in cell proliferation by transmitting a signal from EGFR to the nucleus. It is known that In addition, it has been reported that in many cancer types, the transmission of the EGFR signal is continually sustained due to mutations in codons 12 and / or 13 of the KRAS gene.
- the patient targeted by the present invention is a colorectal cancer patient.
- colonal cancer refers to a malignant tumor originating from the colon or rectum, and in addition to primary colorectal cancer, metastasis that has metastasized to locally recurrent colorectal cancer or other tissues (eg, liver). Also included is colorectal cancer.
- the colorectal cancer patients include not only patients who actually have colorectal cancer tumor tissue but also patients who have undergone resection of colorectal cancer tumor tissue. Therefore, in this specification, the therapeutic effect of chemotherapy includes not only reduction of colorectal cancer, suppression of growth, prolongation of life but also suppression of recurrence after resection of tumor tissue of colorectal cancer.
- the previous treatment history of colorectal cancer patients that are the subject of the present invention is not particularly limited as long as TAS-102 can be administered.
- it is refractory or refractory to standard therapy.
- the patient is a resistant colorectal cancer patient.
- the standard therapy is a chemotherapy including a fluoropyrimidine antitumor agent (for example, a combination of 5-fluorouracil (5-FU) and leucovorin (LV)), and irinotecan or oxaliplatin in combination with the chemotherapy. It refers to chemotherapy (FOLFIRI, FOLFOX, etc.).
- “refractory or intolerant to standard therapy” refers to cases in which standard therapy has been performed but the therapeutic effect is no longer observed (for example, cases of exacerbation (PD) during standard therapy, postoperative assistance) This includes cases in which standard therapy is being performed as chemotherapy, or cases that have recurred within 6 months after completion), and when standard doses cannot be administered due to worsening of the disease or side effects.
- PD exacerbation
- TAS-102 means ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride in a molar ratio of 1: 0. It is known that the antitumor agent contained in No. 5 has an antitumor effect mainly on solid cancers such as colorectal cancer by oral administration (International Publication WO96 / 30346 pamphlet).
- ⁇ , ⁇ , ⁇ -trifluorothymidine is a known nucleic acid derivative in which the methyl group at the 5-position of thymidine is substituted with a trifluoromethyl group, and is known to have an antitumor effect by inhibiting DNA synthesis.
- “5-Chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride” is a known compound having an inhibitory action on thymidine phosphorylase activity, and an antitumor effect enhancing action (international publication) WO96 / 30346 pamphlet), cancer metastasis inhibitory action (international publication WO98 / 13045 pamphlet), antitumor agent gastrointestinal disorder alleviation action (international publication WO00 / 56337 pamphlet), anti-HIV action (international publication WO01 / 34162). No. pamphlet), radiotherapy enhancement effect (international publication WO2008 / 001502 pamphlet), and therapeutic effect on inflammatory bowel disease (international publication WO2009 / 047904 pamphlet).
- TAS-102 is formulated with ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride (a preparation containing a plurality of active ingredients) Or a single dosage form (single dosage form) or a single dosage form formulated into multiple dosage forms (multi-drug form).
- ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride are preferably used as compounding agents.
- the dosage form of the antitumor agent there are no particular restrictions on the dosage form of the antitumor agent, and it can be appropriately selected according to the purpose of treatment. Specifically, oral preparations (tablets, coated tablets, powders, granules, capsules, liquids, etc.), injections, suppositories Examples thereof include patches and ointments. Of these, the combination of ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride is preferably in the form of an oral preparation.
- Each antitumor agent can be prepared by a generally known method using a pharmacologically acceptable carrier according to each administration form.
- Such carriers include various types commonly used for ordinary drugs, such as excipients, binders, disintegrants, lubricants, diluents, solubilizers, suspending agents, isotonic agents, pH.
- examples include regulators, buffers, stabilizers, colorants, flavoring agents, and flavoring agents.
- the antitumor agent comprising “ ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride in the present invention in a molar ratio of 1: 0.5
- “Chemotherapy using TAS” means at least TAS-102 chemotherapy, and not only chemotherapy using TAS-102 alone, but also chemotherapy using TAS-102 in combination with other antitumor agents Is also included.
- the administration schedule of the chemotherapy is appropriately selected depending on the patient's age, sex, stage, presence / absence of metastasis, previous treatment calendar, etc., for example, from the 5th and 8th days from the first day in 4 weeks.
- TAS-102 as an amount of FTD is 2 to 4 times a day, 20 to 80 mg / m 2 (body surface area) / day, preferably 2 to 3 times a day, 50 to 70 mg / m 2 (body) Surface area) / day, more preferably 70 mg / m 2 (body surface area) / day twice a day, and a course of repeating this course is preferred.
- the chemotherapy may be preoperative adjuvant chemotherapy in which the tumor is removed after the chemotherapy or postoperative adjuvant chemotherapy in which the chemotherapy is performed after the tumor is removed.
- the “therapeutic effect” can be evaluated by a tumor shrinking effect, a recurrence suppressing effect, a life prolonging effect, and the like.
- the effect can be expressed by the degree of extension of the median overall survival or progression-free survival.
- An antitumor agent containing ⁇ , ⁇ , ⁇ -trifluorothymidine and 5-chloro-6- (1- (2-iminopyrrolidinyl) methyl) uracil hydrochloride in a molar ratio of 1: 0.5 was used.
- “Chemotherapy has a sufficient therapeutic effect” means that administration of TAS-102 significantly prolongs survival or significantly suppresses recurrence compared to non-administration. An excellent therapeutic effect.
- the prediction method of the present invention includes the following steps (1) to (2).
- Step (1) is a step of detecting the presence or absence of a mutation in the KRAS gene contained in a biological sample collected from a patient.
- the biological sample is not particularly limited as long as it is a sample collected from a cancer patient and contains cancer cells, and examples thereof include body fluids (blood, urine, etc.), tissues, extracts thereof, and cultures of collected tissues. .
- the collection method of a biological sample can be suitably selected according to the kind of biological sample.
- the KRAS gene mutation in the present invention can be exemplified by mutations in codons 12, 13 and 61. From the viewpoint of the prediction accuracy of the present invention, mutations in codons 12 and 13 are preferred. Specifically, a mutation in which the glycine of codon 12 is changed to serine, aspartic acid, valine, cysteine, alanine or arginine due to the point mutation of the first or second base of codon 12 of the KRAS gene, the codon of KRAS gene Examples include a mutation in which the glycine at codon 13 is changed to aspartic acid due to a point mutation at the second base of 13 (Clin Cancer Res. 17 (14): 4901-4914, 2011; J Mol Diagnostic. 12 (1). : 43-50, 2010).
- the method for detecting a mutation in the KRAS gene in the present invention is not particularly limited as long as the above mutation can be detected, and a known detection method can be used.
- a detection method include a direct sequencing method and a Scorpion-ARMS method (Nature Biotech 17: 804-807, 1999) which is a real-time RT-PCR method, and the Scorpion-ARMS method is used in terms of detection sensitivity. preferable.
- commercially available detection kits such as TheraScreen: KRAS (manufacturer: DxS), can be used.
- the biological sample is prepared by appropriate processing according to these measurement methods. Moreover, the reagent containing the primer or probe used for a detection can be adjusted with the method used conventionally according to these measuring methods.
- step (2) when the KRAS gene is mutated as a result of the detection in the above step (1), it is predicted that there is a high possibility that chemotherapy using TAS-102 for the patient has a sufficient therapeutic effect. It is a process.
- TAS-102 Patients with advanced recurrence colorectal cancer (169 patients) who had a prior treatment history of 2 regimens or more and were refractory or intolerant to standard therapy including 5-FU, irinotecan, and oxaliplatin were treated with TAS-102 (112 patients) and placebo They were divided into groups (57 cases). There was no significant difference in background between the two patient groups (male ratio (TAS-102 administration group, 57.1%; placebo group, 49.1%)), average age (TAS-102 administration group, 63 years old) Placebo group, 62 years old), ECOG PS 0 (TAS-102 administration group, 64.3%; placebo group, 61.4%), pretreatment history ratio of 3 regimens or more (TAS-102 administration group, 84.
- TAS-102 70 mg / m 2 (body surface area) / day twice a day with TAS-102 as the FTD amount on the 5th day and the 8th to 12th day from the first day in 4 weeks The administration schedule was repeated for one course. On the other hand, no antitumor agent including TAS-102 was administered to the placebo group.
- TAS-102 shows a better life-prolonging effect for patients who are mutated (mutant: 13.0 months, wild type: 7.2 months), which is an unexpected effect for those skilled in the art.
- Nude mice transplanted with a human colorectal cancer strain HCT-116 which is known to have a mutant KRAS gene, according to a conventional method, received 150 mg / kg / day TAS-102 as an FTD amount 2 Orally administered for 14 consecutive days (TAS-102 administration group).
- TAS-102 administration group As a comparison group, cetuximab, which is frequently used clinically for patients with colorectal cancer who have become refractory or intolerant to standard therapies including 5-FU, irinotecan, and oxaliplatin, is selected.
- / Kg / day was intraperitoneally administered to Day 1, 5, 8, 12 (the dose is the amount that has been confirmed to have an antitumor effect in other carcinomas).
- the control group was not dosed. The antitumor effect of each drug administration group was evaluated.
- the tumor volume (tumor volume, TV) was calculated by measuring the major axis and the minor axis of the tumor twice a week with a digital caliper, and at the same time, the body weight as an index of side effects was measured. From the tumor volume on each measurement day, the relative tumor volume (RTV) and the inhibition rate (inhibition rate, IR) were calculated according to the following equations.
- RTV n (TV on Day n) / (TV on Day 0)
- IR (%) [1 ⁇ (average RTV n value of drug administration group) / (average RTV n value of control group)] ⁇ 100 The results are shown in FIG.
- the tumor growth inhibition rate on the last measurement day (29th day) was 57.7%, indicating a statistically significant antitumor effect.
- the inhibition rate of tumor growth in the cetuximab administration group was 1.7%, showing almost no antitumor effect. In all groups, no strong weight loss was observed.
- TAS-102 is clinically useful in patients with colorectal cancer regardless of the presence or absence of mutations in the KRAS gene, but the KRAS gene has a particularly excellent therapeutic effect in patients with mutations. It was.
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Abstract
Description
項1.
下記工程(1)~(2)を含む、結腸直腸癌患者におけるα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法の治療効果を予測する方法:
(1)当該患者から採取された生体試料に含まれるKRAS遺伝子の変異の有無を検出する工程、及び
(2)上記工程(1)における検出の結果、KRAS遺伝子が変異している場合、当該患者に対する当該化学療法が十分な治療効果を示す可能性が高いと予測する工程。
KRAS遺伝子の変異が、コドン12及び/又は13の変異である、項1記載の方法。
結腸直腸癌患者が、標準療法に不応又は不耐の結腸直腸癌患者である、項1又は2記載の方法。
項1~3の方法によりα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測された結腸直腸癌患者を治療するためのα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤。
項1~3の方法によりα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測された結腸直腸癌患者に対し、α,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法を実施することを特徴とする、結腸直腸癌の治療方法。
項1~3の方法によりα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測された結腸直腸癌患者に当該化学療法を実施するための、α,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤の使用。
KRAS遺伝子が変異している結腸直腸癌患者を治療するためのα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤。
KRAS遺伝子が変異している結腸直腸癌患者に対して、α,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法を実施することを特徴とする、結腸直腸癌の治療方法。
KRAS遺伝子が変異している結腸直腸癌患者を治療するための、α,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤の使用。
RTVn=(TV on Day n)/(TV on Day 0)
IR(%)=[1-(薬剤投与群の平均RTVn値)/(コントロール群の平均RTVn値)]×100
結果を図3に示す。TAS-102投与群の最終測定日(29日目)における腫瘍増殖抑制率は57.7%であり、統計上有意な抗腫瘍効果を示した。一方、セツキシマブ投与群の腫瘍増殖抑制率は1.7%であり、ほぼ抗腫瘍効果を示さなかった。また、全ての群において、強い体重減少は認められなかった。
Claims (9)
- 下記工程(1)~(2)を含む、結腸直腸癌患者におけるα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法の治療効果を予測する方法:
(1)当該患者から採取された生体試料に含まれるKRAS遺伝子の変異の有無を検出する工程、及び
(2)上記工程(1)における検出の結果、KRAS遺伝子が変異している場合、当該患者に対する当該化学療法が十分な治療効果を示す可能性が高いと予測する工程。 - KRAS遺伝子の変異が、コドン12及び/又は13の変異である、請求項1記載の方法。
- 結腸直腸癌患者が、標準療法に不応又は不耐の結腸直腸癌患者である、請求項1又は2記載の方法。
- 請求項1~3の方法によりα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測された結腸直腸癌患者を治療するためのα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤。
- 請求項1~3の方法によりα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測された結腸直腸癌患者に対し、α,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法を実施することを特徴とする、結腸直腸癌の治療方法。
- 請求項1~3の方法によりα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測された結腸直腸癌患者に当該化学療法を実施するための、α,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤の使用。
- KRAS遺伝子が変異している結腸直腸癌患者を治療するためのα,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤。
- KRAS遺伝子が変異している結腸直腸癌患者に対して、α,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤を用いた化学療法を実施することを特徴とする、結腸直腸癌の治療方法。
- KRAS遺伝子が変異している結腸直腸癌患者を治療するための、α,α,α-トリフルオロチミジンと5-クロロ-6-(1-(2-イミノピロリジニル)メチル)ウラシル塩酸塩をモル比1:0.5で含有する抗腫瘍剤の使用。
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JPWO2014185528A1 (ja) * | 2013-05-17 | 2017-02-23 | 大鵬薬品工業株式会社 | Tk1タンパク質の発現が亢進した結腸直腸癌患者に対する治療効果予測方法 |
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