Anti-CD47 BINDING AGENTS
The invention relates to antibody molecules and antigen-binding portions thereof which bind specifically to CD47 (Cluster of Differentiation 47, also known as integrin associated protein [IAP]). In aspects of the invention, the anti-CD47 antibody molecules and antigen-binding portions thereof specifically bind to human CD47 and cynomolgus monkey CD47. Medical uses of the anti-CD47 antibody molecules and antigen-binding portions of the invention are disclosed. The anti-CD47 antibody molecules and antigen-binding portions of the invention represent modified and optimised binding molecules compared with a VxP037 murine/humanized anti-CD47 antibody described in WO2014/093678A2.
1 - 34 . (canceled)
35 . An antibody molecule which specifically binds to human CD47 and cynomolgus monkey CD47, or antigen-binding portion thereof, wherein the antibody molecule or antigen-binding portion comprises: a heavy chain variable region (VH) comprising a heavy chain complementarity determining region 1 (HCDR1), a heavy chain complementarity determining region 2 (HCDR2), and a heavy chain complementarity determining region 3 (HCDR3) and a light chain variable region (VL) comprising a light chain complementarity determining region 1 (LCDR1), a light chain complementarity determining region 2 (LCDR2), and a light chain complementarity determining region 3 (LCDR3);
wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2, and LCDR3 comprise:
(a) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSNGYTY (SEQ ID NO: 92) (LCDR1), KVSNRLS (SEQ ID NO: 53 (LCDR2) and NTHTPR (SEQ ID NO: 93) (LCDR3), respectively;
(b) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSNGYNY (SEQ ID NO: 89) (LCDR1), KVSNRLS (SEQ ID NO: 53 (LCDR2) and NTHTPR (SEQ ID NO: 93) (LCDR3), respectively;
(c) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSNGYNY (SEQ ID NO: 89) (LCDR1), KGSNRLS (SEQ ID NO: 75 (LCDR2) and NTHTPR (SEQ ID NO: 93) (LCDR3), respectively;
(d) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSNGYNY (SEQ ID NO: 89) (LCDR1), KGSNRLS (SEQ ID NO: 75 (LCDR2) and NTQTPR (SEQ ID NO: 96) (LCDR3), respectively;
(e) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSNGYNY (SEQ ID NO: 89) (LCDR1), LGSNRLS (SEQ ID NO: 77 (LCDR2) and NTQTPR (SEQ ID NO: 96) (LCDR3), respectively;
(f) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSQGYTY (SEQ ID NO: 104) (LCDR1), KVSNRLS (SEQ ID NO: 53) (LCDR2) and NTHTPR (SEQ ID NO: 93) (LCDR3), respectively;
(g) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSNGYTY (SEQ ID NO: 92) (LCDR1), KVSNRLS (SEQ ID NO: 53 (LCDR2) and QTHTPR (SEQ ID NO: 105) (LCDR3), respectively;
(h) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSQGYTY (SEQ ID NO: 104) (LCDR1), KVSNRLS (SEQ ID NO: 53) (LCDR2) and QTHTPR (SEQ ID NO: 105) (LCDR3), respectively;
(i) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSNGYTY (SEQ ID NO: 92) (LCDR1), KVSNRFS (SEQ ID NO: 85 (LCDR2) and NTHTPR (SEQ ID NO: 93) (LCDR3), respectively; or
(j) the amino acid sequences GSGYTFTNYY (SEQ ID NO: 15) (HCDR1), INPVDGDTNYNPSFQG (SEQ ID NO: 91) (HCDR2), GGYTMD (SEQ ID NO: 16) (HCDR3), SSQSLLHSNGYNY (SEQ ID NO: 89) (LCDR1), KVSNRFS (SEQ ID NO: 85 (LCDR2), and NTHTPR (SEQ ID NO: 93) (LCDR3), respectively.
36 . The antibody molecule or antigen-binding portion of claim 35 , comprising one or more substitutions, deletions or insertions which remove a post-translational modification site, for example a glycosylation site, a deamination site, a phosphorylation site or an isomerisation/fragmentation site.
37 . The antibody molecule or antigen-binding portion of claim 35 , wherein the antibody molecule or antigen-binding portion is humanized or chimeric.
38 . The antibody molecule or antigen-binding portion of claim 35 , comprising one or more human variable domain framework scaffolds into which the CDRs have been inserted.
39 . The antibody molecule or antigen-binding portion of claim 35 , comprising an IGHV5-51 human germline scaffold into which the corresponding HCDR sequences have been inserted.
40 . The antibody molecule or antigen-binding portion of claim 35 , comprising an IGKV2-28 human germline scaffold into which the corresponding LCDR sequences have been inserted.
41 . The antibody molecule or antigen-binding portion of claim 35 , wherein the VH comprises a sequence with at least 90% sequence identity to:
(a) amino acid residues 1-23 of SEQ ID NO: 141;
(b) amino acid residues 34-50 of SEQ ID NO: 141;
(c) amino acid residues 67-98 of SEQ ID NO: 141;
(d) amino acid residues 105-116 of SEQ ID NO: 141; or
(e) any combination thereof.
42 . The antibody molecule or antigen-binding portion of claim 41 , wherein the VH comprises:
(a) amino acid residues 1-23 of SEQ ID NO: 141;
(b) amino acid residues 34-50 of SEQ ID NO: 141;
(c) amino acid residues 67-98 of SEQ ID NO: 141;
(d) amino acid residues 105-116 of SEQ ID NO: 141; or
(e) any combination thereof.
43 . The antibody molecule or antigen-binding portion of claim 35 , wherein the VL comprises a sequence with at least 90% sequence identity to:
(a) amino acid residues 1-24 of SEQ ID NO: 143;
(b) amino acid residues 34-50 of SEQ ID NO: 143;
(c) amino acid residues 62-95 of SEQ ID NO: 143;
(d) amino acid residues 102-112 of SEQ ID NO: 143; or
(e) any combination thereof.
44 . The antibody molecule or antigen-binding portion of claim 43 , wherein the VL comprises:
(a) amino acid residues 1-24 of SEQ ID NO: 143;
(b) amino acid residues 34-50 of SEQ ID NO: 143;
(c) amino acid residues 62-95 of SEQ ID NO: 143;
(d) amino acid residues 102-112 of SEQ ID NO: 143; or
(e) any combination thereof.
45 . The antibody molecule or antigen-binding of claim 35 , wherein the VH comprises a sequence with at least 85% sequence identity to SEQ ID NO: 141.
46 . The antibody molecule or antigen-binding portion of claim 35 , wherein the VL comprises at least 85% sequence identity sequence of SEQ ID NO: 143.
47 . The antibody molecule or antigen-binding portion of claim 35 , comprising an immunologically inert constant region.
48 . The antibody molecule or antigen-binding portion of claim 35 , wherein the antibody molecule or antigen-binding portion is a Fab fragment, a F(ab) 2 fragment, an Fv fragment, a tetrameric antibody, a tetravalent antibody, a multispecific antibody, a monoclonal antibody, or a fusion protein.
49 . A pharmaceutical composition comprising the antibody molecule or antigen-binding portion of claim 35 .
50 . A method for treating or preventing a disease in a subject, comprising administering an effective amount of the antibody molecule or antigen-binding portion thereof as defined in claim 35 .
51 . The method of claim 50 , wherein the disease is a cancer selected from the group consisting of: pancreatic cancer, melanoma, breast cancer, lung cancer, bronchial cancer, colorectal cancer, prostate cancer, stomach cancer, ovarian cancer, urinary bladder cancer, brain cancer, central nervous system cancer, peripheral nervous system cancer, esophageal cancer, cervical cancer, uterine cancer, endometrial cancer, cancer of the oral cavity, cancer of the pharynx, liver cancer, kidney cancer, testicular cancer, biliary tract cancer, small bowel cancer, appendix cancer, salivary gland cancer, thyroid gland cancer, adrenal gland cancer, osteosarcoma, chondrosarcoma, and cancer of hematological tissues.
52 . The method of claim 50 , wherein the disease is a cardiovascular disease or a fibrotic disease.
53 . The method of claim 50 , wherein the disease is a cardiovascular disease selected from the group consisting of coronary heart disease and atherosclerosis.
54 . The method of claim 50 , wherein the disease is a fibrotic disease elected from the group consisting of myocardial infarction, angina, osteoarthritis, pulmonary fibrosis, cystic fibrosis, bronchitis, and asthma.