EP3555136A1 - Combinaison d'anticorps anti-cd303 et anti-amhrii - Google Patents
Combinaison d'anticorps anti-cd303 et anti-amhriiInfo
- Publication number
- EP3555136A1 EP3555136A1 EP17836011.1A EP17836011A EP3555136A1 EP 3555136 A1 EP3555136 A1 EP 3555136A1 EP 17836011 A EP17836011 A EP 17836011A EP 3555136 A1 EP3555136 A1 EP 3555136A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seq
- antibody
- amino acid
- acid sequence
- pharmaceutical composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2851—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the lectin superfamily, e.g. CD23, CD72
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2869—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against hormone receptors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
- A61K2039/507—Comprising a combination of two or more separate antibodies
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/50—Immunoglobulins specific features characterized by immunoglobulin fragments
- C07K2317/56—Immunoglobulins specific features characterized by immunoglobulin fragments variable (Fv) region, i.e. VH and/or VL
- C07K2317/565—Complementarity determining region [CDR]
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/73—Inducing cell death, e.g. apoptosis, necrosis or inhibition of cell proliferation
- C07K2317/732—Antibody-dependent cellular cytotoxicity [ADCC]
Definitions
- the present invention relates to a new combination of antibodies, in particular for the prevention or treatment of urogenital cancers, preferably ovarian cancer.
- Ovarian cancer is the leading cause of gynecological cancers, and is the fifth leading cause of cancer death in women, whose three histological origins are as follows:
- FIGO classification International Federation of Gynecology and Obstetrics
- FIGO classification International Federation of Gynecology and Obstetrics
- Stage I Tumor limited to the ovaries (5-year survival rate: 90-70%)
- Stage II Tumor in one or both ovaries with pelvic extension (5-year survival rate: 70-40%)
- Stage III Tumor in one or both ovaries with extra-pelvic extension (5-year survival rate: 20%), and
- Stage IV Remote metastases excluding peritoneal metastases (5-year survival rate: ⁇ 10%).
- the main current strategies used for the treatment of ovarian cancer are surgery and chemotherapy, particularly at the front line, such as carboplatin and paclitaxel.
- Monoclonal antibodies have also recently been developed such as cetuximab, which is directed against the epidermal growth factor receptor.
- the combination of an anti-CD303 antibody and an anti-AMHRIl antibody is particularly effective against ovarian tumors.
- the combination of these two antibodies may have a synergistic effect on the site of the tumor.
- the present invention thus relates to a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle:
- the present invention also relates to products containing:
- the invention further relates to
- At least one anti-AMHRIl antibody for its use for the prevention or treatment of urogenital cancers in combination with at least one anti-CD303 antibody;
- At least one anti-CD303 antibody for use in the prevention or treatment of urogenital cancers in combination with at least one anti-AMHRII antibody.
- the invention also relates to a method of treating urogenital cancers, which comprises administering to a patient at least one anti-AMHRI1 antibody and at least one anti-CD303 antibody.
- antibody refers both to an immunoglobulin, fragments and derivatives of this immunoglobulin.
- Immunoglobulins are well known to those skilled in the art and consist of an assembly of two dimers each consisting of a heavy chain and a light chain. The multimeric complex is assembled by the binding of a light chain and a heavy chain by a disulfide bridge between two cysteines, the two heavy chains being themselves also linked together by two disulfide bridges.
- Each of the heavy chains and light chains consists of a constant region and a variable region. More precisely, each light chain consists of a variable region (V L ) and a constant region (C L ). Each heavy chain consists of a variable region (V H) and a constant region consisting of three constant domains C H i, C H2 and C H3 . The domains C H2 and C H3 make up the domain Fc.
- the variable regions of the light chain and of the heavy chain consist of three domains determining the recognition of the antigen (CDR regions, ie Complementary Determining Regions) surrounded by four framework domains (FR or Framework regions).
- Anti-CD303 (a) and anti-AMHRI1 (b) antibodies can be monoclonal or polyclonal. Preferably, they are monoclonal antibodies.
- the antibodies can be of several isotypes, depending on the nature of their constant region: the constant regions ⁇ , ⁇ , ⁇ , ⁇ and ⁇ correspond respectively to immunoglobulins IgG, IgA, IgM, IgE and IgD.
- the anti-CD303 a) and anti-AMHRIl b) antibodies are of IgG isotype. Indeed, this isotype shows an ability to efficiently induce an ADCC (Antibody-Dependent Cellular Cytotoxicity) activity in the largest number of (human) individuals.
- ADCC Antibody-Dependent Cellular Cytotoxicity
- the constant regions ⁇ comprise several subtypes: ⁇ 1, ⁇ 2, ⁇ 3, these three types of constant regions having the particularity of fixing the human complement, and ⁇ 4, thus creating the lgG1, IgG2, IgG3, and IgG4 sub-isotypes.
- the anti-CD303 a) and anti-AMHRIl b) antibodies are of the IgG1 or IgG2 isotype, preferably IgG1.
- the anti-CD303 a) and anti-AMHRIl b) antibodies are selected from murine antibodies, chimeric antibodies, humanized antibodies and human antibodies.
- the anti-CD303 antibody a) is a chimeric antibody, and more preferably a chimeric antibody selected from a murine / human chimeric antibody or a human / macaque chimeric antibody.
- the anti-CD303 antibody a) is a humanized antibody, in particular a chimeric antibody whose constant region of the heavy and light chains is of human origin.
- chimeric antibody refers to an isolated antibody, in which the sequence of each light chain and / or heavy chain that constitutes it comprises or consists of a hybrid sequence derived from at least two distinct animals.
- a chimeric antibody contains a wild-type light chain variable region and wild-type heavy chain variable region fused to the human light chain and heavy chain constant regions, respectively.
- a chimeric antibody can be prepared using genetic recombination techniques well known to those skilled in the art.
- humanized antibody refers to an antibody derived from an animal other than humans in which heavy chain and light chain sequences other than CDRs have been replaced by corresponding sequences of one or more antibodies. human origin. The antibody is therefore mainly composed of human sequences, but its specificity for the antigen conferred by the CDRs comes from another species. In addition, some of the skeletal segment residues (referred to as FR) can be modified to maintain binding affinity (Jones et al., 1986, Verhoeyen et al., 1988, Riechmann et al., 1988).
- the humanized antibodies according to the invention may be prepared by techniques known to those skilled in the art such as “CDR grafting”, “resurfacing”, Superhumanization, "Human string content”, “FR libraries” technologies. "Guided selection”, “FR shuffling” and “Humaneering”, as summarized in the review of Almagro et al-2008.
- the anti-CD303 antibody and / or the anti-AMHRIl antibody according to the invention may also be present in the form of an anti-CD303 antibody fragment and / or a fragment of anti-AMHRIl antibodies, respectively.
- fragment refers in particular to Fab, F (ab) '2 or
- Fab refers to an antibody fragment of molecular weight of about 50,000 Da and having antigen binding activity.
- the Fab fragment consists of the entire light chain (VL + CL) and part of the heavy chain (VH + CH1). It can be obtained in particular by treating IgG with a protease, papain.
- F (ab ') 2 refers to a fragment of about 100,000 Da and having antigen binding activity. It corresponds to the association by a bridge disulfide (hinge region) of two Fab fragments described above. It can be obtained by treating IgG with a protease, pepsin.
- Fd corresponds to the portion of the heavy chain that is included in the Fab fragment.
- the fragment Fd is thus formed of the VH and CH1 domains.
- the anti-CD303 antibody and / or the anti-AMHRIl antibody according to the invention may also be present in the form of an anti-CD303 antibody derivative a) and / or a anti-AMHRIl antibody derivative b), respectively.
- derivative refers in particular to scFv derivatives, and to scFv multimers, such as diabody, triabody or tetrabody.
- ScFv single chain Fv
- VH VL polypeptide synthesized using the genes encoding the VL and VH domains and a linker sequence.
- ScFv includes CDRs maintained in an appropriate conformation, for example using genetic recombination techniques.
- ScFv can also serve as basic modules for the development of multimeric structures (dimeric: "diabody”, trimeric: “triabody”, tetrameric: “tetrabody”).
- diabody refers to a scFv dimer. This fragment dimer has the property of maintaining the double valence that the parent antibody possesses. Diabody is bivalent, mono or bispecific depending on whether it fixes two identical or different antigens.
- triabody refers to the trivalent association of scFv. A triabody can thus fix three identical or different antigens.
- tetrabody refers to the tetravalent association of scFv.
- a tetrabody can fix four identical or different antigens.
- urogenital cancers refers to cancers of the urogenital tract in the male or female organs. These include prostate cancer, testicular cancer, penile cancer, endometrial cancer, vulvar and vaginal cancer, uterine cancer, cervix cancer the uterus, ovarian cancer, kidney cancer, bladder cancer. Preferably, the urogenital cancer is ovarian cancer.
- the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one anti-CD303 antibody, and at least one anti-AMHRI1 antibody fragment or derivative.
- the present invention also relates to products containing at least one anti-CD303 antibody, and at least one anti-AMHRI1 antibody fragment or derivative, as combination products for simultaneous, separate or time-course use for its use in the prevention or treatment of urogenital cancers.
- the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one anti-CD303 antibody fragment, and at least one anti-AMHRIl antibody or one of its fragments or one of its derivatives.
- the present invention also relates to products containing at least one anti-CD303 antibody fragment, and at least one anti-AMHRIl antibody or one of its fragments or a derivative thereof, as combination products for a simultaneous use, separate or spread over time, for its use in the prevention or treatment of urogenital cancers.
- the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one anti-CD303 antibody derivative, and at least one anti-AMHRIl antibody or one of its fragments or one of its derivatives.
- the present invention also relates to products containing at least one anti-CD303 antibody derivative, and at least one anti-AMHRIl antibody or one of its fragments or a derivative thereof, as combination products for one or more simultaneous use, separate or spread over time, for its use in the prevention or treatment of urogenital cancers.
- the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one anti-AMHRI1 antibody, and at least one anti-CD303 antibody fragment or derivative.
- the present invention also relates to products containing at least one anti-AMHRI 1 antibody, and at least one anti-CD303 antibody fragment or derivative, as combination products for simultaneous, separate or spread use over time, for its use in the prevention or treatment of urogenital cancers.
- the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one anti-AMHRI1 antibody fragment, and at least one anti-CD303 antibody or one of its fragments or one of its derivatives.
- the present invention also relates to products containing at least one anti-AMHRIl antibody fragment, and at least one anti-CD303 antibody or one of its fragments or one of its derivatives, as combination products for simultaneous, separate or spread use over time for its use in the prevention or treatment of urogenital cancers.
- the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one anti-AMHRI1 antibody derivative, and at least one anti-CD303 antibody or one of its fragments or one of its derivatives.
- the present invention also relates to products containing at least one anti-AMHRI1 antibody derivative, and at least one anti-CD303 antibody or a fragment thereof or a derivative thereof, as combination products for one or more simultaneous use, separate or spread over time, for its use in the prevention or treatment of urogenital cancers.
- the present invention thus relates to a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle:
- pharmaceutically acceptable carrier is meant a non-toxic medium compatible with a biological system such as a cell, a cell culture, a tissue or an organism.
- the invention also relates to a product containing the above two active agents a) and b), said active ingredients being combined for simultaneous, separate or time-based use, and in the prevention or treatment of urogenital cancers.
- the anti-CD303 antibody is an antibody directed against the CD303 protein.
- This protein also named BDCA-2, is specifically expressed on the surface of plasmacytoid dendritic cells, and is a type II protein belonging to type C lectins.
- the human CD303 antigen is the C member of the 4 th type C lectin family (CLEC4 or "C-type lectin domain family 4, member C"). It is a 213 amino acid type II transmembrane glycoprotein (accessible in Uniprot: Q8WTT0), comprising a short cytoplasmic domain without obvious signaling (amino acids 1 -21), transmembrane region (amino acids 22-44), and extracellular domain (amino acids 45-213).
- Plasmacytoid dendritic cells correspond to a subpopulation of dendritic cells, also called DC2.
- Plasmacytoid dendritic cells are characterized by the Lin- (CD3-, CD19-, CD20-, CD14-, CD56-), HLA-DR +, CD1-1C-, CD123 + and CD45RA + markers. These cells have also been phenotypically characterized: they express the markers CD4, CD303 and BDCA-4. They are present in the lymphoid organs and are also circulating in the blood. They have the ability to secrete type I IFN in the presence of a viral infection.
- tumor cells can promote the growth of tumor cells and their survival, in particular inducing an immunosuppressive environment in the tumor environment, for example by inducing the differentiation of regulatory T cells (Treg).
- Treg regulatory T cells
- immunosuppressive properties refers to the properties of dendritic cells to develop and maintain immunosuppression in the tumor environment.
- tolerogenic properties means that plasmacytoid dendritic cells will not induce an immune response.
- anti-CD303 antibodies according to the invention by virtue of their cytotoxic action, advantageously makes it possible to eliminate tumor-infiltrating plasmacytoid dendritic cells.
- the immunosuppressive and / or tolerogenic properties with respect to the tumor are thus diminished, advantageously suppressed, which improves the antitumor immunity in situ.
- the anti-CD303 antibody according to the invention is a monoclonal antibody directed against the ectodomain of the human CD303 antigen (SEQ ID NO: 86).
- the anti-CD303 antibody according to the invention comprises heavy chains comprising three CDR-H (heavy chain CDR according to the IMGT nomenclature) having the following amino acid sequences, or sequences having at least 80% of identity with the following sequences, and light chains comprising three CDR-Ls (light chain CDRs according to the IMGT nomenclature) having the following amino acid sequences, or sequences having at least 80% identity with the following sequences:
- CDR1 -H-family 1 SEQ ID NO: 1, CDR2-H-family 1: SEQ ID NO: 2, CDR3-H-family 1: SEQ ID NO: 3, CDR1-L-family 1: SEQ ID NO: 4, CDR2-L-family 1: SEQ ID NO: 5, CDR3-L-family 1: SEQ ID NO: 6; or ii) CDR1 -H-family 2: SEQ ID NO: 7, CDR2-H-family 2: SEQ ID NO: 8,
- CDR3-H-family 2 SEQ ID NO: 9
- CDR1-L-family 2 SEQ ID NO: 10
- CDR2-L-family 2 SEQ ID NO: 1
- CDR3-L-family 2 SEQ ID NO 12.
- the expression "at least 80% identity” means an identity of 80%, 81%, 82%,
- the percentages of identity to which reference is made in the context of the present invention are determined on the basis of an overall alignment of the sequences to be compared, that is to say on an alignment of the sequences taken in their entirety over any the length using any algorithm well known to those skilled in the art such as the Needleman and Wunsch-1970 algorithm.
- This sequence comparison can be performed using any software well known to those skilled in the art, for example the needle software using the parameter "Gap open” equal to 10.0, the parameter "Gap extend” equal to 0.5 and a "Blosum 62" matrix.
- the needle software is for example available on the ebi.ac.uk world wide website under the name "Align”.
- the CDR or variable region of an antibody has an amino acid sequence of at least 80%, preferably at least 85%, at least 90%, at least 91%, at least 92%, at least 93% , at least 94%, at least 95%, at least 96%, at least 97%, at least 98%, or at least 99% of identity with a reference sequence, it may have insertions, deletions or substitutions by compared to the reference sequence.
- substitution is preferably carried out by an "equivalent" amino acid, that is to say any amino acid whose structure is close to that of the original amino acid and is therefore unlikely to alter the biological activities of the antibody, or an amino acid whose structure differs but whose intrinsic properties are known to be equivalent to those of the original amino acid and not altering by the biological activities of the 'antibody.
- Table 1 summarizes the amino acid sequences of the CDR-IMGTs of the two families of anti-CD303 antibodies that can be used according to the invention:
- the anti-CD303 antibody according to the invention comprises three CDR-H (heavy chain CDR according to the IMGT nomenclature) having the following amino acid sequences, or sequences having at least 80% identity with the sequences. following, and three CDR-L (light chain CDR according to the IMGT nomenclature) having the following amino acid sequences, or sequences having at least 80% identity with the following sequences:
- CDR1 -H-122A2 SEQ ID NO: 13, CDR2-H-122A2: SEQ ID NO: 14, CDR3-H-122A2: SEQ ID NO: 15, CDR1 -L-122A2: SEQ ID NO: 16, CDR2-L-122A2: SEQ ID NO: 17, CDR3-L-122A2: SEQ ID NO: 18; ii) CDR1 -H-102E9: SEQ ID NO: 19, CDR2-H-102E9: SEQ ID NO: 20, CDR3-H-102E9: SEQ ID NO: 21, CDR1 -L-102E9: SEQ ID NO: 22, CDR2-L-102E9: SEQ ID NO: 23, CDR3-L-102E9: SEQ ID NO: 24; iii) CDR1 -H-104Cl2: SEQ ID NO: 25, CDR2-H-104Cl2: SEQ ID NO: 26, CDR3-H-104Cl2: SEQ ID NO: SEQ
- the anti-CD303 antibody according to the invention has heavy and light chains whose variable regions have the following amino acid sequences or sequences having at least 80% identity with the following sequences:
- 122A2 antibody heavy chain: SEQ ID NO: 43, light chain: SEQ ID NO: 48,
- 102E9 antibody heavy chain: SEQ ID NO: 44, light chain: SEQ ID NO: 49, iii) Antibody 104C12: heavy chain: SEQ ID NO: 45, light chain: SEQ ID NO: 50,
- Antibody 1 14D1 1 heavy chain: SEQ ID NO: 46, light chain: SEQ ID NO: 51, or
- Antibody 104E10 heavy chain: SEQ ID NO: 47, light chain: SEQ ID NO: 52.
- Table 2 summarizes the amino acid sequences of the CDRs and variable regions of the heavy and light chains of the anti-CD303 antibodies according to the invention:
- VL-122A2 DGTVKLLIYYTSRLHSGVPSRFSGSGSGTDYSLTISNLDQ
- VL-1 14D1 1 TSPKLWIYSTSNLASGVPARFSGSGSGTSYSLTISRMEAE
- VL-104E10 GTSPKLWIYSTSNLASGVPARFSGSGSGTSYSLTISRMEA
- the anti-CD303 antibody according to the invention has a human constant region, preferably a human constant region of IgG1 isotype.
- Table 3 Preferred human heavy and light chain constant region sequences SEQ ID NO: 53 and SEQ ID NO: 54.
- the anti-CD303 antibody according to the invention advantageously comprises the heavy and light chains described in Table 4 below.
- the anti-AMHRII antibody is an antibody directed against the anti-Mullerian type II receptor.
- Human anti-Mullerian hormone is a glycoprotein of 560 amino acids, member of the TGF- ⁇ family. It is a hormone emitted by the Sertoli cells of the fetal testicle, which causes the degeneration of the Muller's canal. It is expressed in adults in Sertoli and Leydig cells (testis) and granulosa cells (ovary). It plays a role in the activity of the adult ovary regulating folliculogenesis. The sequence of human est is accessible in Uniprot under the reference P03971.
- the receptor for anti-Mullerian hormone type II is a peptide of
- the anti-AMHRIl antibody according to the invention is derived from murine monoclonal antibody 12G4, described in particular in application WO2008 / 053330.
- the anti-AMHRI1 antibody according to the invention is a humanized and mutated antibody, or fragments or derivatives thereof, having an affinity at least equal to that of the corresponding non-mutated chimeric antibody and a specificity of to the AMHRII receptor and not triggering an immune reaction.
- the present invention relates to a humanized monoclonal antibody 12G4 mutated as defined above, having a light chain and a heavy chain chosen from the following:
- the anti-AMHRIl antibody according to the invention has: a) a light chain comprising or consisting of a variable region whose amino acid sequence is represented by:
- SEQ ID NO: 68 and a constant region whose amino acid sequence is represented by SEQ ID NO: 69, b) a heavy chain comprising or consisting of a variable region whose amino acid sequence is represented by:
- the anti-AMHRI1 antibody according to the invention has: a) a light chain consisting of the amino acid sequence represented by:
- antibody 3C_23K or, a) a light chain consisting of the amino acid sequence represented by:
- antibody 4C_35 or, a) a light chain consisting of the amino acid sequence represented by:
- the anti-AMHRIl antibody according to the invention comprises three CDR-H (heavy chain CDR according to the IMGT nomenclature) having the following amino acid sequences, or sequences having at least 80% identity with the following sequences, and three CDR-Ls (light chain CDR according to the IMGT nomenclature) having the following amino acid sequences, or sequences having at least 80% identity with the following sequences:
- CDR1 -H3C_23 GYTFTSHY (SEQ ID NO: 87), CDR2-H3C_23: IYPGDDST (SEQ ID NO: 88), CDR3-H3C_23: TRGDRFAY (SEQ ID NO: 89), CDR1 -L3C_23: SSVRY ( SEQ ID NO: 90), CDR2-L 3C_23: PTS and CDR3-L 3C_23: LQWSSYPWT (SEQ ID NO: 91). These 6 CDRs are those present in the 3C_23 antibody and in the 3C_23K antibody.
- the anti-AMHRIl antibody according to the invention comprises:
- the anti-CD303 and anti-AMHRIl antibodies according to the invention may, each independently, be produced in a host cell, a transgenic non-human animal or a transgenic plant comprising at least one nucleic acid encoding such an antibody, its fragments or derivatives, or a vector containing such a nucleic acid.
- the anti-CD303 antibody and / or the anti-AMHRI1 antibody according to the invention are produced by transgenesis, in particular in a transgenic non-human animal or a transgenic plant.
- the host cell may be of prokaryotic or eukaryotic origin, and may especially be chosen from bacterial cells, insect cells, plants, yeast or mammals.
- the antibody according to the invention can then be produced by culturing the host cell under appropriate conditions.
- a host cell according to the invention can in particular be obtained by transformation of a cell line by the expression vector (s) of the heavy and light chains of an antibody according to the invention, and separation of the different cellular clones. obtained.
- the transformed cell line is preferably of eukaryotic origin, and may in particular be chosen from insect, plant, yeast or mammalian cells.
- Cell lines suitable for the production of antibodies include the lines selected from: SP2 / 0; YB2 / 0; IR983F; human myeloma Namalwa; PERC6; the CHO lines, in particular CHO-K-1, CHO-Led O, CHO-Lec1, CHO-Lec13, CHO Pro-5, CHO dhfr-, or CHO line deleted for the two alleles coding for the FUT8 gene and / or the GMD gene; Wil-2; Jurkat; Vero; Molt -4; COS-7; 293-HEK; BHK; K6H6; NSO; SP2 / 0-Ag 14, P3X63Ag8.653, cell line of embryonic duck EB66® (Valneva); rat hepatoma lines H4-II-E (DSM ACC3129), and H4-ll-Es (DSM ACC3130) (see WO2012 / 041768), NM-H9D8
- a non-human transgenic animal according to the invention can be obtained by direct injection of the gene (s) of interest into a fertilized egg (Gordon et al. 1980).
- a transgenic non-human animal can also be obtained by introducing the gene (s) of interest into an embryonic stem cell and preparing the animal by a chimera aggregation method or a chimeric injection method (see Manipulating the Mouse Embryo, A Laboratory Manual, Second Edition, Cold Spring Harbor Laboratory Press (1994), Gene Targeting, A Practical Approach, IRL Press at Oxford University Press (1993)).
- a transgenic non-human animal can also be obtained by a cloning technique in which a nucleus in which the gene (s) of interest has been introduced is transplanted into an enucleated egg (Ryan et al., 1997; and al-1998, WO00 / 26357).
- a transgenic non-human animal producing an antibody of interest can be prepared by the above methods. The antibody can then be accumulated in the transgenic animal and purified, in particular from the milk or eggs of the animal.
- Non-human transgenic animals of interest include the mouse, rabbit, rat, goat, cattle (especially cow), and poultry (including chicken).
- a transgenic plant according to the invention may be chosen from any plant that allows the production of antibodies. Many antibodies have already been produced in transgenic plants and the technologies necessary to obtain a transgenic plant expressing an antibody of interest and to the recovery of the antibody are well known to those skilled in the art (see Stoger and al-2002, Fisher et al-2003, Ma et al. 2003, Schillberg et al. 2005). It is also possible to influence the glycosylation obtained in plants to obtain glycosylation close to that of natural human antibodies (without xylose), but with, in addition, low fucosylation, for example with the aid of small interfering RNAs (Forthal et al. al, 2010).
- the anti-CD303 antibody and the anti-AMHRIl antibody are present, according to the invention, either in a pharmaceutical composition or as combination products. They can therefore be combined with pharmaceutically acceptable excipients, and optionally extended release matrices, such as biodegradable polymers.
- the pharmaceutical composition or the combination product may be administered orally, sublingually, subcutaneously, intramuscularly, intravenously, intraarterially, intrathecally, intraocularly, intracerebrally, transdermally, pulmonally, locally or rectally.
- the antibodies can then be administered in unit dosage form, in admixture with conventional pharmaceutical carriers.
- Unit dosage forms include oral forms such as tablets, capsules, powders, granules and oral solutions or suspensions, sublingual and oral forms of administration, aerosols, subcutaneous implants, transdermal, topical, intraperitoneal, intramuscular, intravenous, subcutaneous, intrathecal, intranasal administration forms and rectal administration forms.
- the pharmaceutical composition or the combination product contains a pharmaceutically acceptable carrier for a formulation that can be injected.
- a pharmaceutically acceptable carrier for a formulation that can be injected. It may be in particular isotonic formulas, sterile, saline solutions, or freeze-dried compositions, which, during the addition of sterilized water or physiological saline as appropriate, allow the constitution of injectable solutions.
- compositions suitable for injectable use include sterile aqueous solutions or dispersions, oily formulations, and sterile powders for the extemporaneous preparation of sterile injectable solutions or dispersions.
- the form must be sterile and must be fluid to the extent that it must be injected by syringe. It must be stable under the conditions of manufacture and storage and must be preserved against the contaminating action of microorganisms, such as bacteria and fungi.
- the dispersions according to the invention can be prepared in glycerol, liquid polyethylene glycols or mixtures thereof, or in oils. Under normal conditions of storage and use, these preparations contain a preservative to prevent the growth of microorganisms.
- the pharmaceutically acceptable carrier may be a solvent or dispersion medium.
- the proper fluidity can be maintained, for example, by the use of a surfactant.
- Prevention of the action of microorganisms can be caused by various antibacterial and antifungal agents. In many cases, it will be better to include isotonic agents.
- Prolonged absorption of the injectable compositions can be caused by the use in the compositions of agents delaying absorption.
- Sterile injectable solutions are prepared by incorporating the active ingredients in the required amount in the appropriate solvent with several of the other ingredients listed above, if appropriate, followed by sterilization by filtration.
- the dispersions are prepared by incorporating the various sterilized active ingredients into a sterile vehicle that contains the basic dispersion medium and the other required ingredients from those enumerated above.
- the preferred methods of preparation are vacuum drying and lyophilization.
- the solutions will be administered in a manner compatible with the dosage formulation and in a therapeutically effective amount.
- the formulations are easily administered in a variety of dosage forms, such as the injectable solutions described above, but drug release capsules and the like can also be used.
- aqueous solutions For parenteral administration in an aqueous solution for example, the solution should be suitably buffered and the liquid diluent rendered isotonic with sufficient saline or glucose.
- aqueous solutions are particularly suitable for intravenous, intramuscular, subcutaneous and intraperitoneal administration.
- sterile aqueous media that can be used are known to those skilled in the art.
- the level of therapeutically effective dose specific for a particular patient will depend on a variety of factors, including the disorder being treated and the severity of the disease, the activity of the specific compound employed, the specific composition used, the age, the body weight, general health, sex and diet of the patient, the time of administration, the route of administration, the rate of excretion of the specific compound used, the duration of treatment, or the drugs used in parallel.
- the pDCs are responsible for the differentiation of T regulators (Moseman EA, 2004, Martin-Gayo E, 2010) inter alia by the ICOS / ICOSL interaction, (Ito, T., 2007, Faget, J. 2012, Faget, J 2013).
- the T thus differentiated regulators exert mechanisms of immunosuppression on the functions of the other cells of the immune system, in particular the NK cells, via cell / cell contact but also via the secretion of immunomodulatory cytokines such as IL-10, IL-35 and TGF- ⁇ (Liu, C 2016).
- the protective effect of anti-CD303 antibodies targeting pDCs can be demonstrated by the correlative study of the decrease or elimination of cytokines IL-10 and TGF- ⁇ in the tumor environment and its impact on the effector functions of an anti-cancer agent administered, specific for the tumor (anti-AMHRIl antibody).
- the anti-CD303 antibodies depleting the pDCs lead to a limitation of the immunosuppressive effects of regulatory T and thus a limitation of their secretion of IL-10 and TGF- ⁇ .
- This limitation of secretion of IL-10 and TGF- ⁇ is correlated with a better ADCC of the NK cells, validating the indirect stimulatory effect of the anti-CD303 antibodies on the anti-cancer action of the anti-AMHRIl antibodies.
- NK-CD16 CD16-transfected NK effector cells
- NK-CD16 cells were cultured in culture medium without IL-2, in the absence or in the presence of IL-10 (5, 50 or 120 ng / ml) and TGF- ⁇ (5 , 50 or 120 ng / ml).
- IL-10 5, 50 or 120 ng / ml
- TGF- ⁇ 5 , 50 or 120 ng / ml.
- COV434 cells 35000 cells / well) expressing AMHRII are incubated in a flat-bottomed 96-well plate with NK-CD16 cells, with an E / C ratio (Effector - NK / Target - COV434) equal to 5 / 1 and 5000 ng / ml anti-AMHRIl antibody.
- the negative control corresponds to the same protocol in which the anti-AMHRI1 is replaced by an anti-FVI II chimeric antibody produced in YB2 / 0.
- the lysis of the target cells induced by the anti-AMHRIl antibodies is measured chromogenic by quantifying the intracellular enzyme lactate dehydrogenase (LDH) released into the supernatant by lysed target cells (Roche Diagnostics - Cytotoxicity Detection Kit LDH).
- LDH lactate dehydrogenase
- % lysis [(ER - SR) / (100 - SR)] - [(NC - SR) / (100 - SR)]
- ER and SR respectively represent the experimental (ER) and spontaneous (SR) release of LDH
- NC represents the natural cytotoxicity of NK cells.
- the results (% lysis) are expressed as a percentage, 100% being the value taken as a reference, obtained with NK-CD16 cells in the presence of anti-AMHRIl antibodies and in the absence of IL-10 and TGF- ⁇ (ie anti-AMHRIl antibody alone).
- the monocytes are differentiated into CD16 + macrophages (M2 like) for 2 days in RPMI 1640 + 10% FCS + M-CSF 50 ng / ml for 48 hours.
- SKBR3 and macrophage cells are labeled with PKH-67 (green fluorescence) and PKH-26 (red fluorescence), respectively.
- the SKBR3 cells are opsonized with 10 ⁇ g / ml of the AMHRII antibody or with an irrelevant antibody and then incubated with the macrophages (1 .105 of each cell / well) in the absence or in the presence of different concentrations of IL-10 (5). and 50 ng / ml) alone, TGF- ⁇ (5 and 50 ng / ml) alone and IL-10 + TGF- ⁇ (5 and 50 ng / ml).
- the cells After 3h incubation at 37 ° C, the cells are placed on a counting cell (Mallassez) and observed with a fluorescence microscope.
- a counting cell Malassez
- the percentage of phagocytosis is evaluated by counting the number of macrophages (at least 100 macrophages) containing COV434 cells.
- PBMC Mononucleated cells
- beads coated with anti-CD3 / anti-CD28 to stimulate proliferation T are added in a ratio Treg / beads of 4/1 to verify the activation of Treg.
- Treg cells (CD4 + , CD25 + ) are purified from PBMC by a two-step process: depletion of CD4 negative cells (CD8, CD14, CD15, CD16, CD19, CD36, CD56, CD123 positive cells) , TCRy / ⁇ , and CD235a) then positive selection of CD25 + cells.
- Purified pDC or pDC lines are added in a Treg / pDC ratio of 100, 10 and 1.
- Different amounts of the anti-CD303 antibody (from 1 ng to 10 ⁇ g / ml) are added to the Treg / pDC mixture in the presence of IL-2 (500 U / ml).
- the number of Tregs and their phenotype is monitored over time (1 to 4 days).
- beads coated with anti-CD3 / anti-CD28 to stimulate proliferation T are added in a ratio Treg / beads of 4/1 to verify the activation of Treg.
- a negative control in the absence of pDC is established, in order to check the impact (expected neutral) of the anti-CD303 directly on the Tregs.
- Example 3 Depletion of human pDCs via an anti-CD303 antibody in vivo in the treatment of ovarian cancer
- HTM humanized mouse model mouse model
- This model advantageously brings together several elements that are relevant for the reproducibility of the in vivo conditions: presence of human pDCs which alone express on their surface the target CD303, presence of infiltration of human Treg cells, presence of human tumor cells expressing on their surface AMHRII , molecule targeted by an anti-AMHRIl and an immunocompetent murine host (NK effector cells for ADCC activity).
- the model described previously in the article Wege et al (Int J Cancer 201 1: 129, 2194-2206) combines all these characteristics.
- BRGSF TM or BRGSF TM -A2 mice BALB / c, Rag2tm1 Fwa, IL-2Ryctm1 Cgn, SIRPocNOD, Flk2tm1 lrl, Tg (HLA-A / H2-D / B2M) 1 Bpe
- BRGSF TM or BRGSF TM -A2 mice may be generated according to the procedure described by Legrand N, Huntington ND, Nagasawa M et al.
- HLA-A2.1 -restricted education and cytolytic activity of CD8 (+) T lymphocytes from beta2 microglobulin (beta2m) HLA-A2.1 single-stranded transgenic H-2Db beta2m double knockout mice. J Exp Med 185: 2043-2051).
- mice from the BRGSF-A2 immunodeficient mouse line (BALB / c Rag2 tm1 Fwa IL-2Ry c tm1 C9n SIRPoc NOD Flk2 tm1 lrl Tg (HLA-A / H2-D / B2M) 1 Bpe are irradiated (3 Gy) during their first 192 hours of life and 24 hours later they are transplanted by intrahepatic injection with 1.5x10 5 human CD34 + cells isolated from umbilical cord blood (RBC).
- BRC umbilical cord blood
- COV434-AMHRII-Luc tumor cells are cells of human origin resulting from ovarian carcinoma expressing on their surface the AMHRII receptor, the target of the anti-AMHRII antibody
- the COV.434 cells were, before their administration, modified by lentiviral transduction in order to make them luminescent thanks to the constitutive expression of luciferase This modification allows a c Transverse control during the time of tumor uptake through the analysis of bioluminescence while not sacrificing animals and thus adjust the window of the beginning of treatment.
- mice are tested for their degree of humanization by analysis of the composition of cells present in their blood (human and murine) by flow cytometry and then divided into five groups.
- different see table below: a control group without injection of COV434 cells treated with an isotype antibody (ie an anti-Factor VIII antibody) (this group serves as a negative control to the taking of tumors) (group 1), an injection control group of COV434 cells treated with an isotype antibody (ie an anti-Factor VIII antibody) (group 2), a group treated with anti-transgenic anti-AMHRI1 (AATG) group 3), a group treated with the anti-CD303 antibody (group 4) and a group treated with the combination of anti-CD303 and AATG antibody treatments (group 5).
- the doses used and the treatment frequencies are indicated in the table below:
- the treatment begins 14 weeks after humanization (ie injection of human CD34 + cells isolated from umbilical cord blood (CB) in the presence or absence of 3x10 6 COV434-AMHRII-Luc tumor cells) and lasts 19 weeks.
- the treatment consists of the injection of the products tested intravenously at a dose of 30 mg / kg of body weight in the case of the anti-CD303 antibody every 3 days and once a week at 10 mg / kg of weight. in the case of the AATG antibody.
- the body weight of the mice is determined 3 days before the start of treatment to adjust the dose individually.
- the impact of the treatment on the human pDC subpopulation as well as the other populations of lymphoid cells (B lymphocytes, T lymphocytes, etc.) present in the blood and the spleen was determined by flow cytometry at different times: , j3 and j7.
- the results show that treatment with anti-CD303 antibody at a dose of 30 mg / kg in humanized BRGSF-HIS mice induces depletion of human pDCs for at least 7 days in the blood and spleen. In blood, depletion activity of human pDCs was rapid (> 80% on day 1) and later in the spleen.
- the adapted HTM murine model can be advantageously used to evaluate the indirect effect of the administration of an anti-CD303 antibody on the effect of the ovarian anti-tumor agent, the anti-AMHRIl antibody, in conditions reproducing a physiological situation in vivo, by comparing in particular the results obtained with the different groups tested.
- This model is thus useful for evaluating the benefit, advantageously the synergistic effect, of administering an anti-CD303 antibody in combination with the administration of an anti-AMHRI1 antibody in an ovarian tumor.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- Genetics & Genomics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Endocrinology (AREA)
- Neurology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Peptides Or Proteins (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1662602A FR3060394B1 (fr) | 2016-12-16 | 2016-12-16 | Combinaison d'anticorps anti-cd303 et anti-amhrii |
PCT/EP2017/083156 WO2018109209A1 (fr) | 2016-12-16 | 2017-12-15 | Combinaison d'anticorps anti-cd303 et anti-amhrii |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3555136A1 true EP3555136A1 (fr) | 2019-10-23 |
Family
ID=58401747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17836011.1A Withdrawn EP3555136A1 (fr) | 2016-12-16 | 2017-12-15 | Combinaison d'anticorps anti-cd303 et anti-amhrii |
Country Status (4)
Country | Link |
---|---|
US (1) | US20200095326A1 (fr) |
EP (1) | EP3555136A1 (fr) |
FR (1) | FR3060394B1 (fr) |
WO (1) | WO2018109209A1 (fr) |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8823869D0 (en) | 1988-10-12 | 1988-11-16 | Medical Res Council | Production of antibodies |
US5827690A (en) | 1993-12-20 | 1998-10-27 | Genzyme Transgenics Corporatiion | Transgenic production of antibodies in milk |
CA2350233A1 (fr) | 1998-11-02 | 2000-05-11 | Genzyme Transgenics Corp. | Mammiferes transgeniques et clones |
NZ518263A (en) | 1999-10-14 | 2004-03-26 | Gtc Biotherapeutics Inc | Methods of producing a target molecule in a transgenic animal and purification of the target molecule |
PT1301539E (pt) * | 1999-11-15 | 2007-04-30 | Miltenyi Biotec Gmbh | Pragmentos de ligação a antigénios específicos para células dendríticas, composições e métodos para a sua utilização antigénicos assim reconhecidos e células assim obtidas. |
US20050097625A1 (en) | 2002-11-27 | 2005-05-05 | Meade Harry M. | Modified antibodies stably produced in milk and methods of producing same |
EP1687421B1 (fr) | 2003-09-30 | 2018-06-27 | Sterrenbeld Biotechnologie North America, Inc. | Production d'une proteine exogene dans le lait de mammiferes transgeniques, et purification des proteines ainsi obtenues |
ES2417147T3 (es) | 2005-10-21 | 2013-08-06 | Revo Biologics, Inc. | Anticuerpos con actividad de citotoxicidad celular dependiente de anticuerpos mejorada, métodos para su producción y uso |
US7531632B2 (en) | 2006-02-16 | 2009-05-12 | Gtc Biotherapeutics, Inc. | Clarification of transgenic milk using depth filtration |
EP1918302A3 (fr) * | 2006-05-18 | 2009-11-18 | AvantGen, Inc. | Procédés d'identification et d'isolation d'anticorps spécifiques d'épitope |
KR20170021375A (ko) | 2006-09-10 | 2017-02-27 | 글리코토페 게엠베하 | 항체 발현을 위한 골수성 백혈병 기원의 인간 세포의 용도 |
EP1918304A1 (fr) | 2006-11-02 | 2008-05-07 | Institut National De La Sante Et De La Recherche Medicale (Inserm) | Anticorps monoclonaux contre le récepteur de l'hormone anti-Müllerienne de la type II (AMHR-II) |
FR2959994B1 (fr) * | 2010-05-12 | 2012-08-24 | Lfb Biotechnologies | Nouveaux anticorps humanises 12g4 mutes et leurs fragments diriges contre le recepteur humain de l'hormone anti-mullerienne de type ii |
US20120258496A1 (en) | 2010-09-27 | 2012-10-11 | Boehringer Ingelheim International Gmbh | Production of low fucose antibodies in h4-ii-e rat cells |
FR2984750B1 (fr) * | 2011-12-23 | 2014-01-10 | Lfb Biotechnologies | Nouvelles compositions pharmaceutiques comprenant un anticorps liant le recepteur humain de l'hormone anti-mullerienne de type ii |
CN106029874B (zh) * | 2013-12-16 | 2020-09-15 | 北卡罗来纳-查佩尔山大学 | 浆细胞样树突状细胞的耗竭 |
FR3034420A1 (fr) * | 2015-03-31 | 2016-10-07 | Lab Francais Du Fractionnement | Anticorps monoclonaux anti-cd303 |
-
2016
- 2016-12-16 FR FR1662602A patent/FR3060394B1/fr not_active Expired - Fee Related
-
2017
- 2017-12-15 EP EP17836011.1A patent/EP3555136A1/fr not_active Withdrawn
- 2017-12-15 WO PCT/EP2017/083156 patent/WO2018109209A1/fr unknown
- 2017-12-15 US US16/469,173 patent/US20200095326A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
FR3060394B1 (fr) | 2019-05-24 |
WO2018109209A1 (fr) | 2018-06-21 |
US20200095326A1 (en) | 2020-03-26 |
FR3060394A1 (fr) | 2018-06-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6178349B2 (ja) | 抗pd−l1抗体およびt細胞機能を増強するためのそれらの使用 | |
EP3152234B2 (fr) | Anticorps dirigé contre la galectine 9 et inhibiteur de l'activité suppressive des lymphocytes t régulateurs | |
US20230348584A1 (en) | Use of anti-fam19a5 antibodies for treating cancers | |
BR112020023844A2 (pt) | Anticorpos, métodos de tratamento do câncer e de produção de um anticorpo, ácido nucleico, vetor, células hospedeiras e composição farmacêutica | |
TW200916478A (en) | Anti-CD37 antibodies | |
TW201600092A (zh) | 利用抗-cd19之嵌合抗原受體之癌症治療 | |
FR2915398A1 (fr) | "ensemble de moyens pour le traitement d'une pathologie maligne, d'une maladie auto-immune ou d'une maladie infectieuse" | |
FR2909092A1 (fr) | Nouveaux anticorps anti-proliferation | |
EP2793942B1 (fr) | Nouvelles compositions pharmaceutiques comprenant un anticorps liant le recepteur humain de l'hormone anti-mullerienne de type ii | |
EP2651978A1 (fr) | Utilisation d'un anticorps dirige contre une proteine membranaire | |
JP2023536631A (ja) | 多重特異性結合性作用剤およびその使用 | |
US20230414778A1 (en) | COMBINATION OF ANTIBODY-DRUG CONJUGATE WITH ANTI-SIRPalpha ANTIBODY | |
WO2018172286A1 (fr) | Anticorps dirigés contre un ligand d'un point de contrôle immunitaire avec fragment fc ayant une affinité améliorée pour cd16a | |
EP3555136A1 (fr) | Combinaison d'anticorps anti-cd303 et anti-amhrii | |
EP3390452B1 (fr) | Nouvelle utilisation d'un anticorps dirige contre la proteine membranaire cd303 | |
TW202116804A (zh) | 以pd-1/cd3雙特異性蛋白質所進行之血液性癌症治療 | |
EP3555133A1 (fr) | Combinaison d'anticorps anti-cd303 et anti-her2 | |
US20230014026A1 (en) | Anti-Tumor Combination Therapy comprising Anti-CD19 Antibody and Polypeptides Blocking the SIRPalpha-CD47 Innate Immune Checkpoint | |
FR2910896A1 (fr) | Anticorps monoclonal dirige contre le recepteur humain des ldl | |
TW202408584A (zh) | 抗體-藥物結合物與抗SIRPα抗體之組合 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190614 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20200610 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20220701 |