WO2020027100A1 - 抗体－薬物コンジュゲート投与による転移性脳腫瘍の治療 - Google Patents

抗体－薬物コンジュゲート投与による転移性脳腫瘍の治療 Download PDF

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WO2020027100A1
WO2020027100A1 PCT/JP2019/029765 JP2019029765W WO2020027100A1 WO 2020027100 A1 WO2020027100 A1 WO 2020027100A1 JP 2019029765 W JP2019029765 W JP 2019029765W WO 2020027100 A1 WO2020027100 A1 WO 2020027100A1
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Prior art keywords
antibody
therapeutic agent
agent according
drug conjugate
seq
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PCT/JP2019/029765
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English (en)
French (fr)
Japanese (ja)
Inventor
潔 杉原
千晶 石井
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Daiichi Sankyo Co Ltd
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Daiichi Sankyo Co Ltd
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Priority to SG11202100947SA priority Critical patent/SG11202100947SA/en
Priority to IL280510A priority patent/IL280510B1/en
Priority to AU2019315177A priority patent/AU2019315177B2/en
Priority to CA3108044A priority patent/CA3108044A1/en
Priority to EP19844078.6A priority patent/EP3831412A4/en
Priority to BR112021001509-4A priority patent/BR112021001509A2/pt
Priority to IL325918A priority patent/IL325918A/en
Priority to JP2020534654A priority patent/JP7473474B2/ja
Priority to KR1020257039689A priority patent/KR20250172902A/ko
Priority to CN201980064765.2A priority patent/CN112805036A/zh
Priority to EA202190403A priority patent/EA202190403A1/ru
Priority to KR1020217005657A priority patent/KR102894505B1/ko
Application filed by Daiichi Sankyo Co Ltd filed Critical Daiichi Sankyo Co Ltd
Priority to US17/264,250 priority patent/US12220604B2/en
Publication of WO2020027100A1 publication Critical patent/WO2020027100A1/ja
Anticipated expiration legal-status Critical
Priority to JP2024063679A priority patent/JP7769032B2/ja
Priority to JP2025183109A priority patent/JP2026021442A/ja
Priority to JP2025183108A priority patent/JP2026021441A/ja
Priority to AU2026202582A priority patent/AU2026202582A1/en
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Definitions

  • the present invention relates to a therapeutic agent for a metastatic brain tumor containing a specific antibody-drug conjugate, and / or a method for treating a metastatic brain tumor, which comprises administering a specific antibody-drug conjugate to an individual.
  • Metastatic brain tumor is a disease that occurs when primary cancer metastasizes to the brain, and is known to be found in 20 to 40% of cancer patients. Cancer metastasis to the brain not only has a large effect on prognosis but also leads to a significant decrease in QOL. Therefore, there is a need for the development of an effective treatment for metastatic brain tumors (Non-Patent Documents 1 and 2).
  • Primary metastatic brain tumors include lung, breast, melanoma, renal cell, kidney, colon, stomach, head and neck, hepatocellular, liver, ovarian, and prostate cancer , Bladder cancer, pancreatic cancer, endometrial cancer, thyroid cancer, malignant lymphoma, sarcoma and the like.
  • Non-Patent Documents 1 and 2 Non-Patent Documents 1 and 2.
  • Examples of the treatment of metastatic brain tumors originating from lung cancer include gefitinib, an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (Non Patent Literature 3), Erlotinib (Non Patent Literature 4), Clinical studies using afatinib (Non-patent document 5), osimertinib (Non-patent document 6), and an ALK inhibitor crizotinib (Non-patent document 7) are known. .
  • EGFR epidermal growth factor receptor
  • Non Patent Literature 4 Erlotinib
  • Clinical studies using afatinib Non-patent document 5
  • osimertinib Non-patent document 6
  • an ALK inhibitor crizotinib Non-patent document 7
  • trastuzumab Anti-HER2 antibody
  • lapatinib lapatinib
  • HER22 tyrosine kinase inhibitor a human epidermal growth factor receptor 2 (HER2) tyrosine kinase inhibitor
  • Non-Patent Document 10 As a treatment for metastatic brain tumors with melanoma as the primary cancer, clinical studies using the BRAF inhibitor Vemurafenib (Non-Patent Document 10) and the like are known.
  • An antibody-drug conjugate in which an antibody capable of binding to an antigen expressed on the surface of a cancer cell and capable of being internalized in a cell is bound to a cytotoxic drug is selected for cancer cells.
  • ADC Antibody-Drug Conjugate
  • an antibody-drug conjugate comprising a derivative of an antibody and a derivative of exotecan which is a topoisomerase I inhibitor is known (Patent Documents 1 to 5, Non-patent Documents 16 to 19). ). Because these antibody-drug conjugates have excellent antitumor effects and safety, clinical trials are currently underway.
  • trastuzumab emtansine which is a tubulin inhibitor as a component
  • trastuzumab emtansine which is a tubulin inhibitor as a component
  • BTB blood-tumor barrier
  • the present invention shows whether a specific antibody-drug conjugate composed of a derivative of exatecan crosses the blood-brain barrier and shows a desired antitumor effect against metastatic brain tumors that have acquired drug resistance It is an object to verify whether or not this is the case.
  • the object of the present invention is to provide a therapeutic agent for metastatic brain tumor containing the antibody-drug conjugate, and / or a method for treating metastatic brain tumor, which comprises administering the antibody-drug conjugate to an individual. I do.
  • the present inventors have conducted intensive studies to solve the above-mentioned problems, and found that a specific antibody-drug conjugate comprising a derivative of exatecan exhibits an excellent antitumor effect on metastatic brain tumors. Heading, the present invention has been completed.
  • a therapeutic agent for metastatic brain tumor comprising, as an active ingredient, an antibody-drug conjugate in which a drug linker represented by (1) and an antibody are bound by a thioether bond.
  • Primary metastatic brain tumors include breast, lung, melanoma, renal cell, kidney, colon, stomach, head and neck, hepatocellular, liver, ovarian, and prostate cancer
  • the therapeutic agent according to [1] which is at least one selected from the group consisting of: bladder cancer, pancreatic cancer, endometrial cancer, thyroid cancer, malignant lymphoma, and sarcoma.
  • the therapeutic agent according to [1], wherein the primary cancer of the metastatic brain tumor is at least one selected from the group consisting of breast cancer, lung cancer, and melanoma.
  • the therapeutic agent according to [1], wherein the primary cancer of the metastatic brain tumor is breast cancer.
  • the therapeutic agent according to [1], wherein the primary cancer of the metastatic brain tumor is lung cancer.
  • the therapeutic agent according to [1], wherein the primary cancer of the metastatic brain tumor is melanoma.
  • the therapeutic agent according to [8] The therapeutic agent according to [7], wherein the antibody in the antibody-drug conjugate is an anti-HER2 antibody.
  • the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and a light chain having the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2.
  • [10] The therapeutic agent according to [8], wherein the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of SEQ ID NO: 1 and a light chain having the amino acid sequence of SEQ ID NO: 2.
  • the anti-TROP2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 470 in SEQ ID NO: 5 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 6.
  • the anti-B7-H3 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 7 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 8.
  • [22] The therapeutic agent according to [21], wherein the lysine residue at the carboxyl terminal of the heavy chain of the anti-B7-H3 antibody is deleted.
  • the therapeutic agent according to [7], wherein the antibody in the antibody-drug conjugate is an anti-GPR20 antibody.
  • the anti-GPR20 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 472 in SEQ ID NO: 9 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 10.
  • the therapeutic agent according to [7], wherein the antibody in the antibody-drug conjugate is an anti-CDH6 antibody.
  • the anti-CDH6 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 11 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 12.
  • the therapeutic agent according to [28]. [30] The therapeutic agent according to [29], wherein the lysine residue at the carboxyl terminal of the heavy chain of the anti-CDH6 antibody is deleted.
  • a therapeutic agent for metastatic brain tumor comprising as an active ingredient the antibody-drug conjugate represented by [33]
  • Primary metastatic brain tumors include breast, lung, melanoma, renal cell, kidney, colon, stomach, head and neck, hepatocellular, liver, ovarian, and prostate cancer [32]
  • the therapeutic agent according to [32], wherein the primary cancer of the metastatic brain tumor is at least one selected from the group consisting of breast cancer, lung cancer, and melanoma.
  • the therapeutic agent according to [32], wherein the primary cancer of the metastatic brain tumor is breast cancer.
  • the therapeutic agent according to [32], wherein the primary cancer of the metastatic brain tumor is lung cancer.
  • the therapeutic agent according to [32], wherein the primary cancer of the metastatic brain tumor is melanoma.
  • the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and a light chain having the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2.
  • the therapeutic agent according to [39], wherein the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of SEQ ID NO: 1 and a light chain having the amino acid sequence of SEQ ID NO: 2.
  • the therapeutic agent according to [38], wherein the antibody in the antibody-drug conjugate is an anti-HER3 antibody.
  • the therapeutic agent according to [43], wherein the anti-HER3 antibody is an antibody comprising a heavy chain having the amino acid sequence of SEQ ID NO: 3 and a light chain having the amino acid sequence of SEQ ID NO: 4.
  • the anti-TROP2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 470 in SEQ ID NO: 5 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 6.
  • the therapeutic agent according to [38], wherein the antibody in the antibody-drug conjugate is an anti-B7-H3 antibody.
  • the anti-B7-H3 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 7 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 8.
  • the therapeutic agent according to [51]. [53] The therapeutic agent according to [52], wherein the lysine residue at the carboxyl terminal of the heavy chain of the anti-B7-H3 antibody is deleted.
  • the anti-GPR20 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 472 in SEQ ID NO: 9 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 10.
  • the anti-CDH6 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 11 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 12.
  • a method for treating a metastatic brain tumor comprising administering an antibody-drug conjugate in which a drug linker represented by the formula (1) and an antibody are bound by a thioether bond to an individual in need of treatment for the metastatic brain tumor.
  • Primary metastatic brain tumors include breast, lung, melanoma, renal cell, kidney, colon, stomach, head and neck, hepatocellular, liver, ovarian, and prostate cancer
  • the treatment method according to [63] which is at least one selected from the group consisting of bladder cancer, pancreatic cancer, endometrial cancer, thyroid cancer, malignant lymphoma, and sarcoma.
  • the treatment method according to [63], wherein the primary cancer of the metastatic brain tumor is at least one selected from the group consisting of breast cancer, lung cancer, and melanoma.
  • the treatment method according to [63], wherein the primary cancer of the metastatic brain tumor is breast cancer.
  • the treatment method according to [63], wherein the primary cancer of the metastatic brain tumor is lung cancer.
  • the treatment method according to [63], wherein the primary cancer of the metastatic brain tumor is melanoma.
  • the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and a light chain having the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2.
  • the anti-HER3 antibody is an antibody comprising a heavy chain having the amino acid sequence of SEQ ID NO: 3 and a light chain having the amino acid sequence of SEQ ID NO: 4.
  • the anti-TROP2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 470 in SEQ ID NO: 5 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 6.
  • the anti-B7-H3 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 7 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 8.
  • the anti-GPR20 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 472 in SEQ ID NO: 9 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 10. The treatment method according to [86].
  • the anti-CDH6 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 11 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 12.
  • a method for treating metastatic brain tumor which comprises administering the antibody-drug conjugate represented by the formula (1) to an individual in need of treatment for metastatic brain tumor.
  • Primary metastatic brain tumors include breast, lung, melanoma, renal cell, kidney, colon, stomach, head and neck, hepatocellular, liver, ovarian, and prostate cancer
  • the treatment method according to [94] which is at least one selected from the group consisting of bladder cancer, pancreatic cancer, endometrial cancer, thyroid cancer, malignant lymphoma, and sarcoma.
  • the treatment method according to [94], wherein the primary cancer of the metastatic brain tumor is at least one selected from the group consisting of breast cancer, lung cancer, and melanoma.
  • the method according to [94], wherein the primary cancer of the metastatic brain tumor is breast cancer.
  • the treatment method according to [94], wherein the primary cancer of the metastatic brain tumor is lung cancer.
  • the treatment method according to [94], wherein the primary cancer of the metastatic brain tumor is melanoma.
  • any one of [94] to [99], wherein the antibody in the antibody-drug conjugate is an anti-HER2 antibody, an anti-HER3 antibody, an anti-TROP2 antibody, an anti-B7-H3 antibody, an anti-GPR20 antibody, or an anti-CDH6 antibody.
  • the therapeutic method according to [100], wherein the antibody in the antibody-drug conjugate is an anti-HER2 antibody.
  • the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and a light chain having the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2.
  • the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of SEQ ID NO: 1 and a light chain having the amino acid sequence of SEQ ID NO: 2.
  • the anti-HER3 antibody is an antibody comprising a heavy chain having the amino acid sequence of SEQ ID NO: 3 and a light chain having the amino acid sequence of SEQ ID NO: 4.
  • the therapeutic method according to [106] wherein the lysine residue at the carboxyl terminal of the heavy chain of the anti-HER3 antibody is deleted.
  • the anti-TROP2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 470 in SEQ ID NO: 5 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 6.
  • the anti-B7-H3 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 7 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 8.
  • [115] The therapeutic method according to [114], wherein the lysine residue at the carboxyl terminus of the heavy chain of the anti-B7-H3 antibody is deleted.
  • the anti-GPR20 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 472 in SEQ ID NO: 9 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 10.
  • the anti-CDH6 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 11 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 12.
  • A indicates a binding position with the antibody
  • Primary metastatic brain tumors include breast, lung, melanoma, renal cell, kidney, colon, stomach, head and neck, hepatocellular, liver, ovarian, and prostate cancer
  • the antibody-drug conjugate according to [125] which is at least one selected from the group consisting of bladder cancer, pancreatic cancer, endometrial cancer, thyroid cancer, malignant lymphoma, and sarcoma.
  • the antibody-drug conjugate according to [125], wherein the primary cancer of the metastatic brain tumor is at least one selected from the group consisting of breast cancer, lung cancer, and melanoma.
  • the antibody-drug conjugate of [125], wherein the primary cancer of a metastatic brain tumor is breast cancer.
  • the antibody-drug conjugate of [125], wherein the primary cancer of a metastatic brain tumor is lung cancer.
  • the antibody-drug conjugate of [125] wherein the primary metastatic brain tumor is melanoma.
  • any one of [125] to [130], wherein the antibody in the antibody-drug conjugate is an anti-HER2 antibody, an anti-HER3 antibody, an anti-TROP2 antibody, an anti-B7-H3 antibody, an anti-GPR20 antibody, or an anti-CDH6 antibody.
  • the antibody-drug conjugate according to [131], wherein the antibody in the antibody-drug conjugate is an anti-HER2 antibody.
  • the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and a light chain having the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2.
  • [134] The antibody-drug conjugate of [132], wherein the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of SEQ ID NO: 1 and a light chain having the amino acid sequence of SEQ ID NO: 2.
  • [137] [136] The antibody-drug conjugate of [136], wherein the anti-HER3 antibody is an antibody comprising a heavy chain having the amino acid sequence of SEQ ID NO: 3 and a light chain having the amino acid sequence of SEQ ID NO: 4.
  • the anti-TROP2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 470 in SEQ ID NO: 5 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 6.
  • the anti-B7-H3 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 7 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 8.
  • the anti-GPR20 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 472 in SEQ ID NO: 9 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 10.
  • [150] 149. The antibody-drug conjugate of [149], wherein the anti-GPR20 antibody lacks a lysine residue at the carboxyl terminus of the heavy chain.
  • the anti-CDH6 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 11 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 12.
  • Primary metastatic brain tumors include breast, lung, melanoma, renal cell, kidney, colon, stomach, head and neck, hepatocellular, liver, ovarian, and prostate cancer 156.
  • the antibody-drug conjugate of [156] which is at least one selected from the group consisting of bladder cancer, pancreatic cancer, endometrial cancer, thyroid cancer, malignant lymphoma, and sarcoma.
  • the antibody-drug conjugate according to [156], wherein the primary cancer of the metastatic brain tumor is at least one selected from the group consisting of breast cancer, lung cancer, and melanoma.
  • the antibody-drug conjugate of [156], wherein the primary cancer of the metastatic brain tumor is breast cancer.
  • the antibody-drug conjugate of [156], wherein the primary cancer of the metastatic brain tumor is lung cancer.
  • the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and a light chain having the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2.
  • the antibody-drug conjugate of [168], wherein the anti-HER3 antibody has a deletion of a lysine residue at the carboxyl terminus of the heavy chain.
  • the anti-TROP2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 470 in SEQ ID NO: 5 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 6.
  • the antibody-drug conjugate of [172], wherein the anti-TROP2 antibody lacks a lysine residue at the carboxyl terminus of the heavy chain.
  • the anti-B7-H3 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 7 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 8.
  • the anti-GPR20 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 472 in SEQ ID NO: 9 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 10.
  • [181] The antibody-drug conjugate of [180], wherein the anti-GPR20 antibody lacks a lysine residue at the carboxyl terminus of the heavy chain.
  • [182] The antibody-drug conjugate according to any one of [179] to [181], wherein the average number of drug linkers bound per antibody in the antibody-drug conjugate ranges from 7 to 8.
  • the anti-CDH6 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 11 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 12.
  • formula (1) for producing a medicament for the treatment of metastatic brain tumors
  • A indicates a binding position with the antibody
  • Primary metastatic brain tumors include breast, lung, melanoma, renal cell, kidney, colorectal, stomach, head and neck, hepatocellular, liver, ovarian, prostate [187]
  • the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and a light chain having the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2. Use according to [194].
  • the anti-TROP2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 470 in SEQ ID NO: 5 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 6. Use according to [202].
  • [205] The use according to any one of [202] to [204], wherein the average number of drug linkers per antibody in the antibody-drug conjugate ranges from 3.5 to 4.5.
  • the anti-B7-H3 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 7 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 8. Use according to [206].
  • [208] The use according to [207], wherein the lysine residue at the carboxyl terminus of the heavy chain of the anti-B7-H3 antibody is deleted.
  • the anti-GPR20 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 472 in SEQ ID NO: 9 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 10. Use according to [210]. [212] The use according to [211], wherein the lysine residue at the carboxyl terminus of the heavy chain of the anti-GPR20 antibody is deleted. [213] The use according to any one of [210] to [212], wherein the average number of drug linkers per antibody in the antibody-drug conjugate ranges from 7 to 8. [214] The use according to [193], wherein the antibody in the antibody-drug conjugate is an anti-CDH6 antibody.
  • the anti-CDH6 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 11 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 12. Use according to [214]. [216] The use according to [215], wherein the anti-CDH6 antibody has a deletion of a lysine residue at the carboxyl terminus of the heavy chain. [217] The use according to any one of [214] to [216], wherein the average number of drug linkers per antibody in the antibody-drug conjugate ranges from 7 to 8. [218] For producing a medicament for the treatment of metastatic brain tumors, formula
  • Primary metastatic brain tumors include breast, lung, melanoma, renal cell, kidney, colon, stomach, head and neck, hepatocellular, liver, ovarian, and prostate cancer 218.
  • the use according to [218], wherein the primary cancer of the metastatic brain tumor is at least one selected from the group consisting of breast cancer, lung cancer, and melanoma.
  • the anti-HER2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and a light chain having the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2.
  • the anti-TROP2 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 470 in SEQ ID NO: 5 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 6. Use according to [233].
  • the anti-B7-H3 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 7 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 8.
  • the anti-GPR20 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 472 in SEQ ID NO: 9 and a light chain having the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 10. Use according to [241].
  • the anti-CDH6 antibody is an antibody comprising a heavy chain having the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 11 and a light chain having the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 12. Use according to [245].
  • a therapeutic agent for metastatic cancer comprising, as an active ingredient, an antibody-drug conjugate in which a drug linker represented by (1) and an antibody are bound by a thioether bond.
  • the metastatic cancer is at least one selected from the group consisting of a metastatic brain tumor, a metastatic bone tumor, a metastatic lung tumor, and a metastatic liver cancer.
  • a therapeutic agent for metastatic cancer comprising an antibody-drug conjugate represented by the formula (1) as an active ingredient: [253]
  • a method for treating metastatic cancer which comprises administering an antibody-drug conjugate in which a drug linker represented by (1) and an antibody are bound by a thioether bond to an individual in need of treatment for metastatic cancer.
  • the metastatic cancer is at least one selected from the group consisting of a metastatic brain tumor, a metastatic bone tumor, a metastatic lung tumor, and a metastatic liver cancer.
  • the treatment method according to [256], wherein the metastatic cancer is a metastatic bone tumor.
  • a method for treating metastatic cancer comprising administering an antibody-drug conjugate represented by the formula (1) to an individual in need of treatment for metastatic cancer.
  • the metastatic cancer is at least one selected from the group consisting of a metastatic brain tumor, a metastatic bone tumor, a metastatic lung tumor, and a metastatic liver cancer.
  • the metastatic cancer is a metastatic bone tumor.
  • A indicates a binding position with the antibody
  • the metastatic cancer is at least one selected from the group consisting of a metastatic brain tumor, a metastatic bone tumor, a metastatic lung tumor, and a metastatic liver cancer.
  • the antibody-drug conjugate of [262], wherein the metastatic cancer is a metastatic bone tumor.
  • An antibody-drug conjugate represented by [265] The antibody-drug conjugate according to [264], wherein the metastatic cancer is at least one selected from the group consisting of a metastatic brain tumor, a metastatic bone tumor, a metastatic lung tumor, and a metastatic liver cancer. .
  • formula (1) For producing a medicament for the treatment of metastatic cancer, formula
  • A indicates a binding position with the antibody
  • an antibody-drug conjugate in which a drug linker represented by (1) and an antibody are bound by a thioether bond [268] The use according to [267], wherein the metastatic cancer is at least one selected from the group consisting of a metastatic brain tumor, a metastatic bone tumor, a metastatic lung tumor, and a metastatic liver cancer. [269] The use according to [268], wherein the metastatic cancer is a metastatic bone tumor. [270] For producing a medicament for the treatment of metastatic cancer, formula
  • metastatic cancer is at least one selected from the group consisting of a metastatic brain tumor, a metastatic bone tumor, a metastatic lung tumor, and a metastatic liver cancer.
  • metastatic cancer is a metastatic bone tumor.
  • a therapeutic agent for a metastatic brain tumor containing a specific antibody-drug conjugate and / or a method for treating a metastatic brain tumor, which comprises administering a specific antibody-drug conjugate to an individual. can do.
  • FIG. 3 shows the amino acid sequence of the heavy chain of the anti-HER2 antibody (SEQ ID NO: 1).
  • FIG. 3 is a view showing an amino acid sequence of an anti-HER2 antibody light chain (SEQ ID NO: 2).
  • FIG. 4 shows the amino acid sequence of the heavy chain of the anti-HER3 antibody (SEQ ID NO: 3).
  • FIG. 4 is a view showing an amino acid sequence of an anti-HER3 antibody light chain (SEQ ID NO: 4).
  • FIG. 9 shows the amino acid sequence of the heavy chain of the anti-TROP2 antibody (SEQ ID NO: 5).
  • FIG. 9 is a view showing an amino acid sequence of an anti-TROP2 antibody light chain (SEQ ID NO: 6).
  • FIG. 7 shows the amino acid sequence of the heavy chain of the anti-B7-H3 antibody (SEQ ID NO: 7).
  • FIG. 9 shows the amino acid sequence of the light chain of the anti-B7-H3 antibody (SEQ ID NO: 8).
  • FIG. 2 is a graph showing the survival effect of the antibody-drug conjugate (1) in a mouse into which KPL-4-Luc was transplanted intracerebrally.
  • FIG. 2 is a view showing the antitumor effect of the antibody-drug conjugate (1) in a mouse into which KPL-4-Luc was transplanted intracerebrally. The tumor volume was confirmed by the emission intensity of KPL-4-Luc.
  • FIG. 9 is a view showing an amino acid sequence of an anti-GPR20 antibody heavy chain (SEQ ID NO: 9).
  • FIG. 9 is a view showing an amino acid sequence of an anti-GPR20 antibody light chain (SEQ ID NO: 10).
  • FIG. 11 shows the amino acid sequence of the heavy chain of the anti-CDH6 antibody (SEQ ID NO: 11).
  • FIG. 9 is a view showing an amino acid sequence of an anti-CDH6 antibody light chain (SEQ ID NO: 12).
  • Metastatic brain tumor means a tumor generated by metastasis of a cancer (primary carcinoma) generated in a biological tissue other than the brain to the brain.
  • the metastatic brain tumor in the present invention includes not only a tumor that has metastasized into the brain parenchyma but also a tumor that has invaded the buffy coat or arachnoid membrane (meningeal carcinomatosis). There may be a single transition point or a plurality of transition points. Metastatic brain tumors are most often found after symptoms of the primary cancer, but may also be found before symptoms of the primary cancer.
  • metastatic brain tumor examples include headache, vomiting, visual impairment, impaired consciousness, seizures, paralysis, and speech impairment. These symptoms are thought to be caused by direct damage to brain tissue by the tumor, increased intracranial pressure, and the like.
  • the metastatic brain tumor can be examined using, for example, CT (Computed Tomography), PET (Positioned Emission Tomography), and MRI (Magnetic Resonance Imaging).
  • CT Computer Planar Tomography
  • PET PET
  • MRI Magnetic Resonance Imaging
  • Primary cancers of metastatic brain tumor include, for example, lung cancer, breast cancer, melanoma, renal cell cancer, kidney cancer, colorectal cancer, stomach cancer, head and neck cancer, hepatocellular cancer, liver cancer, ovarian cancer, Examples include prostate cancer, bladder cancer, pancreatic cancer, endometrial cancer, thyroid cancer, malignant lymphoma, and sarcoma.
  • lung cancer, breast cancer, and melanoma are present at a high rate as primary cancers of metastatic brain tumors.
  • Antibody-Drug Conjugate used in the present invention comprises: formula
  • A indicates a binding position with the antibody
  • a partial structure comprising a linker and a drug in the antibody-drug conjugate is referred to as a “drug linker”.
  • This drug linker is a thiol group (in other words, a sulfur atom of a cysteine residue) generated at a disulfide bond site between antibody chains (at two heavy chains and heavy chains and at two heavy chains and light chains). Is bound to.
  • the drug linker of the present invention is a topoisomerase I inhibitor, exatecan (IUPAC name: (1S, 9S) -1-amino-9-ethyl-5-fluoro-1,2,3,9,12,15-hexahydro-).
  • the antibody-drug conjugate used in the present invention comprises formula
  • n has the same meaning as the so-called average number of drug bonds (DAR; Drug-to-Antibody Ratio), and indicates the average number of drug linker bonds per antibody.
  • the antibody-drug conjugate used in the present invention after being transferred into cancer cells, formula
  • the above compounds are considered to be the main antitumor activity of the antibody-drug conjugate used in the present invention and have been confirmed to have topoisomerase I inhibitory activity (Ogitani Y. et al., Clinical Cancer Research. , 2016, Oct 15; 22 (20): 5097-5108, Epub 2016 Mar 29).
  • the antibody-drug conjugate used in the present invention is also known to have a bystander effect (Ogitani Y. et al., Cancer Science (2016) 107, 1039-1046).
  • This bystander effect is that after the antibody-drug conjugate used in the present invention is internalized in the target-expressing cancer cells, the compound is released, and the cancer-target cells in the vicinity do not express the target.
  • the antibody in the antibody-drug conjugate used in the present invention may be derived from any species, but is preferably an antibody derived from human, rat, mouse, and rabbit. is there. When the antibody is derived from a species other than human, it is preferable to use a well-known technique to chimerize or humanize the antibody.
  • the antibody of the present invention may be a polyclonal antibody or a monoclonal antibody, but a monoclonal antibody is preferred.
  • the antibody in the antibody-drug conjugate used in the present invention preferably has the property of being able to target cancer cells, and has the property of recognizing cancer cells, the property of binding to cancer cells, Those having the property of being taken up into cells and being internalized, and / or the activity of killing cancer cells are preferred.
  • Antibody uptake into cancer cells can be achieved by (1) an assay that visualizes the antibody taken up into cells with a fluorescent microscope using a secondary antibody (fluorescent label) that binds to the therapeutic antibody (Cell Death Differentiation (2008 ) 15, 751-761), (2) Assay (Molecular Biology of the Cell Vol.
  • the antitumor activity of the antibody can be confirmed in vitro by measuring the activity of suppressing cell proliferation.
  • a cancer cell line overexpressing a target protein of an antibody is cultured, the antibody is added to the culture system at various concentrations, and the inhibitory activity on focus formation, colony formation and spheroid proliferation can be measured.
  • antitumor activity can be confirmed by administering an antibody to a nude mouse transplanted with a cancer cell line that highly expresses a target protein and measuring the change in the cancer cell.
  • the antibody itself has an antitumor effect, but since the antibody-drug conjugate has a compound exhibiting an antitumor effect bound thereto, the antitumor effect of the antibody itself is not essential.
  • the antibody has a property of being internalized and transferred into cancer cells.
  • the antibody in the antibody-drug conjugate used in the present invention can be obtained by known means. For example, it can be obtained by immunizing an animal with a polypeptide serving as an antigen, collecting and purifying an antibody produced in a living body, using a method usually used in this field.
  • the origin of the antigen is not limited to humans, and animals can be immunized with antigens derived from non-human animals such as mice and rats.
  • antibodies that can be applied to human diseases can be selected by testing the cross-reactivity between the obtained antibody that binds to the heterologous antigen and the human antigen.
  • a hybridoma can be established by fusing an antibody-producing cell that produces an antibody against an antigen with a myeloma cell to obtain a monoclonal antibody.
  • the antigen can be obtained by causing a host cell to produce a gene encoding an antigen protein by genetic manipulation. Specifically, a vector capable of expressing an antigen gene may be prepared, introduced into a host cell to express the gene, and the expressed antigen may be purified. Antibodies can also be obtained by using a method of immunizing an animal with an antigen-expressing cell or a cell line expressing an antigen by the above-described genetic manipulation.
  • the antibody in the antibody-drug conjugate used in the present invention may be a recombinant antibody artificially modified for the purpose of, for example, reducing heterologous antigenicity to humans, for example, a chimeric antibody, a humanized ( (Humanized) antibody, or an antibody having only the gene sequence of a human-derived antibody, that is, a human antibody.
  • a chimeric antibody for example, a humanized ( (Humanized) antibody, or an antibody having only the gene sequence of a human-derived antibody, that is, a human antibody.
  • chimeric antibody examples include antibodies in which the variable region and the constant region of the antibody are different from each other, for example, a chimeric antibody in which the variable region of a mouse or rat-derived antibody is conjugated to a human-derived constant region (Proc. Natl. Acad . Sci. USA, 81, 6851-6855, (1984)).
  • humanized antibody an antibody (Nature (1986) @ 321, @ p.522-525) in which only the complementarity determining region (CDR; complementarity determining region) of a heterologous antibody is incorporated into a human-derived antibody, In addition to the CDR sequences of the antibody, the amino acid residues of some of the frameworks of the heterologous antibody were also transplanted into a human antibody (WO 90/07861), a gene conversion mutagenesis strategy. And humanized antibodies (US Pat. No. 5,821,337).
  • CDR complementarity determining region
  • an antibody As a human antibody, an antibody (Tomizuka, K. et al., Nature Genetics (1997) 16, p.1) prepared using a human antibody-producing mouse having a human chromosome fragment containing human antibody heavy and light chain genes. 133-143; Kuroiwa, Y. et. Al., Nucl. Acids Res. (1998) 26, p.3447-3448; Yoshida, H. et. Al., Animal Cell Technology: Basic and Applied Aspects vol.10, p.69-73 (Kitagawa, Y., atsuMatsuda, T. and Iijima, S. eds.), Kluwer Academic Publishers, 1999; Tomizuka, K. et.
  • antibodies obtained by phage display selected from a human antibody library (Wormstone, I. M. et. Al, Investigative Ophthalmology & Visual Science. (2002) 43 (7), p.2301-2308; Mé, S. et al., Briefings in Functional Genomics and Proteomics (2002), 1 (2), p. 189-203; Siriwardena, D. et.al, Ophthalmology (2002) 109 (3), p. 427-431, etc. See also).
  • Antibodies in the antibody-drug conjugate used in the present invention also include modified antibodies.
  • modified product means that the antibody of the present invention has been subjected to chemical or biological modification.
  • Chemical modifications include those having a chemical moiety attached to the amino acid backbone, a chemical moiety attached to an N-linked or O-linked carbohydrate chain, and the like.
  • Biologically modified forms include post-translational modifications (eg, addition of N-linked or O-linked sugar chains, N-terminal or C-terminal processing, deamidation, aspartic acid isomerization, methionine oxidation, etc. ) And those obtained by adding a methionine residue to the N-terminus by expression using a prokaryotic host cell.
  • those labeled to enable detection or isolation of the antibody or antigen according to the present invention for example, an enzyme label, a fluorescent label, and an affinity label are also included in the meaning of such a modified form.
  • a modified antibody according to the present invention is useful for improving antibody stability and blood retention, reducing antigenicity, detecting or isolating an antibody or antigen, and the like.
  • the antibody-dependent cytotoxic activity by controlling the modification of the sugar chain bound to the antibody according to the present invention (glycosylation, defucosification, etc.).
  • Techniques for controlling the sugar chain modification of antibodies include WO 99/54342, WO 00/61739, WO 02/31140, WO 2007/133855, and WO 2013/120066. Nos. Are known, but not limited to these.
  • the antibody according to the present invention also includes an antibody in which the sugar chain modification is regulated.
  • the antibody according to the present invention also includes the modified antibody and a functional fragment of the antibody, and has a deletion in which one or two amino acids have been deleted at the carboxyl terminus of the heavy chain, and an amidated one.
  • the deletion for example, a heavy chain in which a proline residue at the carboxyl terminal site is amidated
  • the deletion at the carboxyl terminus of the heavy chain of the antibody according to the present invention is not limited to the above types.
  • the two heavy chains constituting the antibody according to the present invention may be any one of the heavy chains selected from the group consisting of full-length and the above-described deletion, or a combination of any two heavy chains.
  • the antibody of the present invention preferably has a carboxyl-terminal at both of the two heavy chains. In which one amino acid residue is deleted.
  • IgG immunoglobulin G
  • IgG1, IgG2, IgG3, IgG4 IgG1 or IgG2
  • IgG1 or IgG2 IgG2
  • the antibody in the antibody-drug conjugate used in the present invention is not particularly limited.
  • anti-HER2 antibody refers to an activity that specifically binds to HER2 (Human ⁇ Epidermal ⁇ Growth ⁇ Factor ⁇ Receptor ⁇ Type ⁇ 2; @ ErbB-2), and preferably internalizes in HER2 expressing cells by binding to HER2. 1 shows an antibody having
  • anti-HER2 antibody examples include trastuzumab (US Pat. No. 5,821,337) and pertuzumab (International Publication No. WO 01/00245), and preferably trastuzumab.
  • the “anti-HER3 antibody” specifically binds to HER3 (Human Epidermal Growth Factor Receptor Type 3; ErbB-3), and preferably has an activity of being internalized in HER3 expressing cells by binding to HER3. 1 shows an antibody having
  • anti-HER3 antibody examples include patrizumab (Patritumab; @ U3-1287), U1-59 (WO2007 / 0777028), MM-121 (Seribantuab), and anti-ERBB3 antibodies described in WO2008 / 100624, RG. -7116 (Lumretuzumab) and LJM-716 (Elgemtumab), and preferably, patrizumab and U1-59.
  • the “anti-TROP2 antibody” specifically binds to TROP2 (TACSTD2: Tumor-associated calcium signal transducer 2; EGP-1), and preferably internalizes in TROP2-expressing cells by binding to TROP2. 1 shows an antibody having the activity of TROP2 (TACSTD2: Tumor-associated calcium signal transducer 2; EGP-1), and preferably internalizes in TROP2-expressing cells by binding to TROP2. 1 shows an antibody having the activity of
  • anti-TROP2 antibody examples include hTINA1-H1L1 (WO 2015/098099).
  • the “anti-B7-H3 antibody” specifically binds to B7-H3 (B cell antigen # 7 homolog 3; PD-L3; CD276), and preferably binds to B7-H3. 2 shows an antibody having an activity of internalizing B7-H3 expressing cells.
  • anti-B7-H3 antibody examples include M30-H1-L4 (WO 2014/057687).
  • the “anti-GPR20 antibody” refers to an antibody that specifically binds to GPR20 (G protein-coupled receptor) 20 and preferably has an activity of being internalized in GPR20-expressing cells by binding to GPR20. .
  • anti-GPR20 antibody h046-H4e / L7 (WO 2018/135501).
  • anti-CDH6 antibody refers to an antibody that specifically binds to CDH6 (Cadherin-6), and preferably has an activity of binding to CDH6 to be internalized in CDH6-expressing cells.
  • anti-CDH6 antibody H01L02 (WO 2018/212136).
  • the above drug linker intermediate is N- [6- (2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl) hexanoyl] glycylglycyl-L-phenylalanyl-N-[(2- ⁇ [(1S, 9S) -9-ethyl-5-fluoro-9-hydroxy-4-methyl-10,13-dioxo-2,3,9,10,13,15-hexahydro-1H, 12H-benzo [ de] pyrano [3 ′, 4 ′: 6,7] indolizino [1,2-b] quinolin-1-yl] amino ⁇ -2-oxoethoxy) methyl] glycinamide, WO 2014/057687, WO 2015/098099, WO 2015/115091, WO 2015/155998, and WO 2019/009.
  • the description of the equal sign 4947 can be prepared as a reference.
  • the antibody-drug conjugate used in the present invention can be produced by reacting the above-mentioned drug linker intermediate with an antibody having a thiol group (also referred to as a sulfhydryl group).
  • An antibody having a sulfhydryl group can be obtained by a method well known to those skilled in the art (Hermanson, G. T, Bioconjugate Techniques, pp.56-136, pp.456-493, Academic Press (1996)).
  • a reducing agent such as tris (2-carboxyethyl) phosphine hydrochloride (TCEP) is used in an amount of 0.3 to 3 molar equivalents per one intrachain disulfide in an antibody
  • TCEP tris (2-carboxyethyl) phosphine hydrochloride
  • EDTA ethylenediaminetetraacetic acid
  • an antibody-drug conjugate in which 2 to 8 drugs are bound per antibody using 2 to 20 molar equivalents of the drug linker intermediate per antibody having a sulfhydryl group. it can.
  • the average number of drug bonds per antibody molecule of the produced antibody-drug conjugate is calculated by, for example, measuring the UV absorbance of the anti-HER2 antibody-drug conjugate and its conjugate precursor at two wavelengths of 280 nm and 370 nm. (UV method), or a method of quantifying and calculating each fragment obtained by treating an antibody-drug conjugate with a reducing agent by HPLC measurement (HPLC method).
  • anti-HER2 antibody-drug conjugate refers to an antibody-drug conjugate in which the antibody in the antibody-drug conjugate according to the present invention is an anti-HER2 antibody.
  • the anti-HER2 antibody preferably comprises a heavy chain consisting of the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and a light chain consisting of the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2.
  • the average number of drug linkers bound per antibody of the anti-HER2 antibody-drug conjugate is preferably from 2 to 8, more preferably from 3 to 8, even more preferably from 7 to 8, Even more preferably from 7.5 to 8, and even more preferably about 8.
  • An anti-HER2 antibody-drug conjugate can be produced with reference to the description of WO 2015/115091 and the like.
  • anti-HER3 antibody-drug conjugate refers to an antibody-drug conjugate in which the antibody in the antibody-drug conjugate according to the present invention is an anti-HER3 antibody.
  • the anti-HER3 antibody is preferably CDRH1 comprising the amino acid sequence of amino acids 26 to 35 in SEQ ID NO: 3, CDRH2 comprising the amino acid sequence of amino acids 50 to 65 in SEQ ID NO: 3, and CDRH2 comprising the amino acid sequence of amino acids 50 to 65 in SEQ ID NO: 3, and A heavy chain comprising CDRH3 comprising the amino acid sequence of amino acids 98 to 106; CDRL1 comprising the amino acid sequence of amino acids 24 to 39 in SEQ ID NO: 4; An antibody comprising CDRL2 consisting of an amino acid sequence, and a light chain comprising CDRL3 consisting of the amino acid sequence of amino acids 95 to 103 in SEQ ID NO: 4, More preferably, a heavy chain comprising a heavy chain variable region consisting of the amino acid sequence of amino acids 1 to 117 in SEQ ID NO: 3 and a light chain consisting of the amino acid sequence of amino acids 1 to 113 in SEQ ID NO: 4 An antibody comprising a light chain comprising a region, Still more preferably
  • the average number of drug linkers bound per antibody of the anti-HER3 antibody-drug conjugate is preferably 2 to 8, more preferably 3 to 8, even more preferably 7 to 8, Even more preferably from 7.5 to 8, and even more preferably about 8.
  • An anti-HER3 antibody-drug conjugate can be produced with reference to the description in WO 2015/155998 and the like.
  • anti-TROP2 antibody-drug conjugate refers to an antibody-drug conjugate in which the antibody in the antibody-drug conjugate according to the present invention is an anti-TROP2 antibody.
  • the anti-TROP2 antibody is preferably CDRH1 consisting of the amino acid sequence of amino acids 50 to 54 in SEQ ID NO: 5, CDRH2 consisting of the amino acid sequence of amino acids 69 to 85 in SEQ ID NO: 5, and CDRH2 consisting of the amino acid sequence of amino acids 69 to 85 in SEQ ID NO: 5, and A heavy chain comprising CDRH3 comprising the amino acid sequence of amino acids Nos. 118 to 129; CDRL1 comprising the amino acid sequence of amino acids Nos. 44 to 54 in SEQ ID No.
  • An antibody comprising a light chain comprising a region Even more preferably, an antibody comprising a heavy chain consisting of the amino acid sequence of amino acids 20 to 470 in SEQ ID NO: 5 and a light chain consisting of the amino acid sequence of amino acids 21 to 234 in SEQ ID NO: 6, or And lysine residues at the carboxyl terminus of the heavy chain of the antibody.
  • the average number of drug linkers bound per antibody of the anti-TROP2 antibody-drug conjugate is preferably 2 to 8, more preferably 3 to 5, and even more preferably 3.5 to 4. 5 and even more preferably about 4.
  • An anti-TROP2 antibody-drug conjugate can be produced with reference to the description of WO 2015/098099 and the like.
  • anti-B7-H3 antibody-drug conjugate refers to an antibody-drug conjugate in which the antibody in the antibody-drug conjugate according to the present invention is an anti-B7-H3 antibody.
  • the anti-B7-H3 antibody is preferably CDRH1 consisting of the amino acid sequence of amino acids 50 to 54 in SEQ ID NO: 7, CDRH2 consisting of the amino acid sequence of amino acids 69 to 85 in SEQ ID NO: 7, and SEQ ID NO: 7, a heavy chain comprising CDRH3 comprising the amino acid sequence of amino acid Nos. 118 to 130; CDRL1 of SEQ ID No. 8 comprising the amino acid sequence of amino acids Nos.
  • An antibody comprising a light chain comprising a region Still more preferably, an antibody comprising a heavy chain consisting of the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 7 and a light chain consisting of the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 8, or And lysine residues at the carboxyl terminus of the heavy chain of the antibody.
  • the average number of drug linker bonds per antibody of the anti-B7-H3 antibody-drug conjugate is preferably 2 to 8, more preferably 3 to 5, and even more preferably 3.5 to 5. 4.5, and even more preferably about 4.
  • the anti-B7-H3 antibody-drug conjugate used in the present invention can be produced by referring to the description in WO 2014/057687 and the like.
  • anti-GPR20 antibody-drug conjugate refers to an antibody-drug conjugate in which the antibody in the antibody-drug conjugate according to the present invention is an anti-GPR20 antibody.
  • the anti-GPR20 antibody is preferably CDRH1 consisting of the amino acid sequence of amino acids 45 to 54 in SEQ ID NO: 9, CDRH2 consisting of the amino acid sequence of amino acids 69 to 78 in SEQ ID NO: 9, and CDRH2 consisting of the amino acid sequence of amino acids 69 to 78 in SEQ ID NO: 9;
  • CDRL1 consisting of the amino acid sequence of amino acids 44 to 54 in SEQ ID NO: 10; and amino acid sequence 70 to 76 of SEQ ID NO: 10
  • the average number of drug linkers bound per antibody of the anti-GPR20 antibody-drug conjugate is preferably from 2 to 8, more preferably from 3 to 8, even more preferably from 7 to 8, Even more preferably from 7.5 to 8, and even more preferably about 8.
  • An anti-GPR20 antibody-drug conjugate can be produced by referring to the description in WO2018 / 135501 and the like.
  • anti-CDH6 antibody-drug conjugate refers to an antibody-drug conjugate in which the antibody in the antibody-drug conjugate according to the present invention is an anti-CDH6 antibody.
  • the anti-CDH6 antibody is preferably CDRH1 consisting of the amino acid sequence of amino acids 45 to 54 in SEQ ID NO: 11, CDRH2 consisting of the amino acid sequence of amino acids 69 to 78 in SEQ ID NO: 11, and CDRH1 consisting of the amino acid sequence of amino acids 69 to 78 in SEQ ID NO: 11.
  • a heavy chain comprising CDRH3 comprising the amino acid sequence of amino acids Nos. 118-130; CDRL1 comprising the amino acid sequence of amino acids Nos. 44-54 in SEQ ID No.
  • An antibody comprising a light chain comprising a region Still more preferably, an antibody comprising a heavy chain consisting of the amino acid sequence of amino acids 20 to 471 in SEQ ID NO: 11 and a light chain consisting of the amino acid sequence of amino acids 21 to 233 in SEQ ID NO: 12, or And lysine residues at the carboxyl terminus of the heavy chain of the antibody.
  • the average number of drug linkers bound per antibody of the anti-CDH6 antibody-drug conjugate is preferably from 2 to 8, more preferably from 3 to 8, even more preferably from 7 to 8, Even more preferably from 7.5 to 8, and even more preferably about 8.
  • An anti-CDH6 antibody-drug conjugate can be produced with reference to the description in WO2018 / 212136 and the like.
  • therapeutic agent and / or therapeutic method The therapeutic agent of the present invention is characterized by containing the antibody-drug conjugate used in the present invention. Further, the therapeutic method of the present invention is characterized by administering the antibody-drug conjugate used in the present invention. These therapeutic agents and methods can be used for the treatment of metastatic brain tumors.
  • the primary cancer of a metastatic brain tumor to which the therapeutic agent and / or method of the present invention can be used is not particularly limited as long as it is a cancer that may metastasize to the brain.
  • Cell lung cancer and non-small cell lung cancer melanoma, renal cell carcinoma, kidney cancer, colorectal cancer (sometimes called colorectal cancer, including colon and rectal cancer), gastric cancer (gastric gland) Cancer), head and neck, hepatocellular, liver, ovarian, prostate, bladder, pancreatic, endometrial, thyroid, malignant Lymphoma, and sarcoma, and the like, preferably, breast cancer, lung cancer, and melanoma, more preferably, breast cancer, and lung cancer, more preferably, breast cancer Can be mentioned.
  • antibody-drug conjugates used in the present invention in particular, what kind of antibody-drug conjugate is suitable is determined by examining the nature of the primary cancer and a tumor marker. Can be. For example, when the primary cancer is breast cancer or lung cancer and HER2 expression is confirmed, an anti-HER2 antibody-drug conjugate can be suitably used. When HER3 expression is confirmed, an anti-HER3 antibody -When the drug conjugate can be suitably used and the expression of TROP2 is confirmed, the anti-TROP2 antibody-drug conjugate can be suitably used and when the expression of B7-H3 is confirmed , An anti-B7-H3 antibody-drug conjugate can be suitably used.
  • the anti-HER3 antibody-drug conjugate can be suitably used.
  • the anti-TROP2 antibody-drug can be used.
  • the conjugate can be suitably used, and when the expression of B7-H3 is confirmed, an anti-B7-H3 antibody-drug conjugate can be suitably used.
  • the primary cancer is kidney cancer and CDH6 expression is confirmed, an anti-CDH6 antibody-drug conjugate can be suitably used.
  • the presence or absence of HER2, HER3, TROP2, B7-H3, GPR20, and CDH6 and other tumor markers can be determined, for example, by collecting tumor tissue from a cancer patient and immunizing a formalin-fixed paraffin-embedded specimen (FFPE). Inspection at the gene product (protein) level by histochemistry (IHC), flow cytometer, western blot, etc., or in situ hybridization (ISH), quantitative PCR (q-PCR), microarray analysis Or by examining the cell-free blood circulating tumor DNA (ctDNA) from a cancer patient and using a method such as next-generation sequencing (NGS). You can also check.
  • FFPE formalin-fixed paraffin-embedded specimen
  • IHC histochemistry
  • ISH in situ hybridization
  • q-PCR quantitative PCR
  • ctDNA cell-free blood circulating tumor DNA
  • NGS next-generation sequencing
  • the therapeutic agent and the therapeutic method of the present invention can be suitably used for mammals, but can be more preferably used for humans.
  • the antitumor effect of the therapeutic agent and the therapeutic method of the present invention can be determined, for example, by preparing a model in which a marker cell (for example, a luciferase gene) is introduced into a cancer cell derived from a primary cancer and transplanted into the brain of a test animal.
  • a marker cell for example, a luciferase gene
  • the life-prolonging effect by applying the therapeutic agent or the therapeutic method of the present invention, and the transition of the luminescence intensity of the marker can be confirmed by measuring by any imaging technique. For example, when transplanting cells into which a luciferase gene has been introduced, luciferin is administered and the luminescence intensity is examined.If the luminescence intensity is reduced by applying the therapeutic agent or treatment method of the present invention, the anti-tumor effect is obtained. It can be recognized that there is.
  • the antitumor effect of the therapeutic agent and the therapeutic method of the present invention can be determined by preparing a model (eg, PDX brain transplant model) in which a biopsy derived from a patient with a metastatic brain tumor is transplanted into a test animal, and Alternatively, it can also be confirmed by administering a treatment method, and furthermore, by administering or treating the therapeutic agent of the present invention to a patient with metastatic brain tumor.
  • the measurement of the antitumor effect can be performed, for example, by confirming a change in tumor volume before and after administration of the therapeutic agent or the therapeutic method of the present invention using CT, PET, and / or MRI.
  • a Response Evaluation Criteria in Solid Tumors RECIST
  • RECIST Response Evaluation Criteria in Solid Tumors
  • WHO evaluation method a Macdonald evaluation method
  • weight measurement e.g., weight measurement, and other methods.
  • Complete response Complete response; CR
  • partial response Partial response
  • PR progression
  • Progressive disease PD
  • response rate Objective Response rate
  • duration of response Duration, Duration; Hate-free survival (Progression-Free Survival; PFS), overall survival (Overall @ It can be determined by OS) index, such as; urvival.
  • the superiority of the therapeutic agent and the therapeutic method of the present invention with respect to the existing anticancer agent can be confirmed with respect to the antitumor effect on metastatic brain tumor.
  • the therapeutic agent and method of the present invention can exhibit not only an antitumor effect on metastatic brain tumors but also an antitumor effect on metastatic cancers other than metastatic brain tumors.
  • metastatic cancer other than metastatic brain tumor include metastatic bone tumor, metastatic lung tumor, and metastatic liver cancer, and preferably metastatic bone tumor.
  • Metastatic cancers other than metastatic brain tumors may co-occur with metastatic brain tumors or may develop separately from metastatic brain tumors, but in any case, the therapeutic agent and treatment method of the present invention It can exert an antitumor effect.
  • the therapeutic agent and the therapeutic method of the present invention can delay the growth of cancer cells, suppress the proliferation, and can destroy cancer cells. By these actions, in a cancer patient, it is possible to achieve a relief from symptoms caused by the cancer and an improvement in QOL, thereby achieving a therapeutic effect while maintaining the life of the cancer patient. Even if the cancer cells are not destroyed, cancer patients can achieve longer QOL while achieving higher QOL by suppressing or controlling the proliferation of the cancer cells.
  • the therapeutic agent of the present invention can be applied to a patient as a systemic therapy, or applied locally to a cancer tissue to expect a therapeutic effect.
  • Therapeutic agents of the invention can be administered as a pharmaceutical composition comprising one or more pharmaceutically compatible ingredients.
  • Pharmaceutically compatible components should be appropriately selected and applied from pharmaceutical additives and the like usually used in this field, depending on the dose and concentration of the antibody-drug conjugate used in the present invention.
  • the therapeutic agent of the present invention comprises a pharmaceutical composition comprising a buffer such as a histidine buffer, an excipient such as sucrose or trehalose, and a surfactant such as polysorbate 80 or 20 (hereinafter referred to as “the pharmaceutical composition of the present invention”).
  • Object The pharmaceutical composition of the present invention can be suitably used as an injection, more preferably as an aqueous injection or a lyophilized injection, and even more preferably a lyophilized injection. It can be used as an agent.
  • the pharmaceutical composition of the present invention is an aqueous injection, it can be suitably administered by intravenous infusion after dilution with an appropriate diluent.
  • the diluting solution include a glucose solution and a physiological saline solution, preferably a glucose solution, and more preferably a 5% glucose solution.
  • the pharmaceutical composition of the present invention when it is a freeze-dried injection, it can be preferably dissolved in water for injection, diluted with a suitable diluent to a required amount, and then administered by intravenous infusion.
  • a suitable diluent examples include a glucose solution and a physiological saline solution, preferably a glucose solution, and more preferably a 5% glucose solution.
  • compositions of the present invention include, for example, intravenous, intradermal, subcutaneous, intramuscular, and intraperitoneal routes, preferably intravenous. Routes can be mentioned.
  • the pharmaceutical composition of the present invention can also be administered by direct injection into the parenchyma, buffy coat, or arachnoid.
  • the antibody-drug conjugate used in the present invention can be administered to a human at intervals of 1 to 180 days, preferably 1 week, 2 weeks, 3 weeks, or 4 weeks. Once every three weeks, and even more preferably once every three weeks. Further, the antibody-drug conjugate used in the present invention can be administered at a dose of about 0.001 to 100 mg / kg per dose, preferably 0.8 to 12.4 mg / dose. / Kg dose. When the antibody-drug conjugate used in the present invention is an anti-ER2 antibody-drug conjugate, it is preferably 0.8 mg / kg, 1.6 mg / kg, 3.2 mg / kg, 5 mg / dose.
  • a dose of 0.4 mg / kg, 6.4 mg / kg, 7.4 mg / kg, or 8 mg / kg can be administered once every three weeks, more preferably 5.4 per dose.
  • 6.4, or 7.4 mg / kg can be administered once every three weeks, and even more preferably, 5.4 mg / kg or 6.4 mg / kg per dose.
  • the dose can be administered once every three weeks.
  • the antibody-drug conjugate used in the present invention is an anti-HER3 antibody-drug conjugate, it is preferably 1.6 mg / kg, 3.2 mg / kg, 4.8 mg / kg, 5 times per dose.
  • a dose of 6.6 mg / kg, 6.4 mg / kg, 8.0 mg / kg, 9.6 mg / kg, or 12.8 mg / kg can be administered once every three weeks, more preferably Can be administered at a dose of 4.8 mg / kg, 5.6 mg / kg, or 6.4 mg / kg once every three weeks.
  • the antibody-drug conjugate used in the present invention is an anti-TROP2 antibody-drug conjugate, it is preferably 0.27 mg / kg, 0.5 mg / kg, 1.0 mg / kg, 2 times per dose.
  • a dose of 0.0 mg / kg, 4.0 mg / kg, 6.0 mg / kg, or 8.0 mg / kg can be administered once every three weeks, more preferably per dose.
  • a dose of 4.0 mg / kg, 6.0 mg / kg, or 8.0 mg / kg can be administered once every three weeks.
  • the therapeutic agent of the present invention can be administered in combination with a cancer therapeutic agent other than the antibody-drug conjugate used in the present invention, whereby the antitumor effect can be enhanced.
  • the other therapeutic agent for cancer used for such a purpose may be administered to an individual simultaneously or separately with the therapeutic agent of the present invention, or may be administered at different administration intervals. You may.
  • Such a cancer therapeutic agent is not limited as long as it has an antitumor activity.
  • irinotecan (Irinotecan, CPT-11), cisplatin, carboplatin, oxaliplatin (Oxaliplatin), Fluorouracil (Fluorouracil, 5-FU), Gemcitabine (Gemcitabine), Capecitabine (Capecitabine), Paclitaxel (Paclitaxel), Docetaxi (Doctorubicin), Doxorubicin , Mitomycin C, Tegafu Le (Tegafur) ⁇ gimeracil (Gimeracil) ⁇ Oterashiru (Oteracil) formulation, cetuximab (Cetuximab), panitumumab (panitumumab), bevacizumab (Bevacizumab), Ramucirumab (Ramucirumab), REGORAFENIB (Regorafenib), trifluridine (Trifluridine) ⁇ Chipirashiru ( Tipiracil, Gefitinib, Gelotin
  • the therapeutic agent of the present invention can also be used in combination with radiation therapy.
  • a cancer patient receives radiation therapy before and / or after receiving treatment with the therapeutic agent of the present invention, or at the same time.
  • the radiotherapy method include whole brain irradiation (WBRT), stereotactic irradiation (STI), and stereotactic irradiation (SRS).
  • the therapeutic agent of the present invention can also be used as adjuvant chemotherapy combined with surgery.
  • Surgery is performed, for example, by physically removing all or part of a brain tumor.
  • the therapeutic agent of the present invention may be administered for the purpose of reducing the size of the brain tumor before surgery (referred to as preoperative adjuvant chemotherapy or neoadjuvant therapy), and for preventing the recurrence of the brain tumor after surgery. (Referred to as postoperative adjuvant chemotherapy or adjuvant therapy).
  • Example 1 Production of Antibody-Drug Conjugate
  • a humanized anti-HER2 antibody (a heavy chain consisting of the amino acid sequence of amino acids 1 to 449 in SEQ ID NO: 1 and An antibody comprising a light chain consisting of the amino acid sequence of amino acids 1 to 214 in SEQ ID NO: 2) formula
  • antibody-drug conjugate (1) in which the drug linker represented by and the anti-HER2 antibody were bound by a thioether bond was produced.
  • the DAR of the antibody-drug conjugate (1) is 7.8.
  • Example 2 Life Extension Test Mice: Female BALB / c nude mice (Charles River Japan) of 5-6 weeks old were subjected to the experiment.
  • Antibody-drug conjugate (1) was diluted with ABS buffer (10 mM acetate buffer (pH 5.5), 5% sorbitol) and administered at 10 mL / kg in the tail vein.
  • KPL-4-Luc obtained by introducing a luciferase gene into human breast cancer strain KPL-4 cells obtained from Dr. Junichi Kobayashi, Kawasaki Medical University (British Journal of Cancer, (1999) 79 (5/6). 707-717) was used. KPL-4-Luc was suspended in physiological saline, and 1 ⁇ 10 4 cells were transplanted into female nude mice into the brain, and 7 days after transplantation, random grouping was performed (Day 0). The antibody-drug conjugate (1) was administered to Day 0 and Day 21 at a dose of 10 mg / kg via the tail vein. The control group received the solvent. The number of mice in each group was 5, and the presence or absence of survival was observed until Day 28.
  • the animals were euthanized if weight loss or abnormal behavior (eg, swirling exercise, eating / drinking disorders) of 30% or more was observed.
  • weight loss or abnormal behavior eg, swirling exercise, eating / drinking disorders
  • luciferin was intraperitoneally administered to each mouse on Days 14, 21 and 28, and the In Vivo Imaging System (IVIS) was used. The luminescence of the head was measured by.
  • a solvent administration group (2 animals) was also set on the satellite, a formalin-fixed paraffin-embedded section of the mouse head was prepared on Day 14, and hematoxylin-eosin staining was performed.
  • SEQ ID NO: 1 amino acid sequence of anti-HER2 antibody heavy chain
  • SEQ ID NO: 2 amino acid sequence of anti-HER2 antibody light chain
  • SEQ ID NO: 3 amino acid sequence of anti-HER3 antibody heavy chain
  • SEQ ID NO: 4 amino acid sequence of anti-HER3 antibody light chain 5: amino acid sequence of anti-TROP2 antibody heavy chain
  • SEQ ID NO: 6 amino acid sequence of anti-TROP2 antibody light chain
  • SEQ ID NO: 7 amino acid sequence of anti-B7-H3 antibody heavy chain
  • SEQ ID NO: 8 amino acid sequence of anti-B7-H3 antibody light chain
  • SEQ ID NO: 9 amino acid sequence of anti-GPR20 antibody heavy chain
  • SEQ ID NO: 10 amino acid sequence of anti-GPR20 antibody light chain
  • SEQ ID NO: 11 amino acid sequence of anti-CDH6 antibody heavy chain
  • SEQ ID NO: 12 amino acid sequence of anti-CDH6 antibody light chain

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PCT/JP2019/029765 2018-07-31 2019-07-30 抗体－薬物コンジュゲート投与による転移性脳腫瘍の治療 Ceased WO2020027100A1 (ja)

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EA202190403A EA202190403A1 (ru) 2018-07-31 2019-07-30 Лечение метастатической опухоли головного мозга путем введения конъюгата антитело-лекарственное средство
AU2019315177A AU2019315177B2 (en) 2018-07-31 2019-07-30 Treatment of metastatic brain tumor by administration of antibody-drug conjugate
CA3108044A CA3108044A1 (en) 2018-07-31 2019-07-30 Treatment of metastatic brain tumor by administration of antibody-drug conjugate
EP19844078.6A EP3831412A4 (en) 2018-07-31 2019-07-30 TREATMENT OF METASTATIC BRAIN TUMOR BY ADMINISTRATION OF AN ANTIBODY-DRUG CONJUGATE
BR112021001509-4A BR112021001509A2 (pt) 2018-07-31 2019-07-30 agente terapêutico para um tumor de cérebro metastásico
IL325918A IL325918A (en) 2018-07-31 2019-07-30 Antibody-drug conjugates for use in the treatment of metastatic brain tumors
JP2020534654A JP7473474B2 (ja) 2018-07-31 2019-07-30 抗体－薬物コンジュゲート投与による転移性脳腫瘍の治療
KR1020257039689A KR20250172902A (ko) 2018-07-31 2019-07-30 항체-약물 콘주게이트 투여에 의한 전이성 뇌종양의 치료
CN201980064765.2A CN112805036A (zh) 2018-07-31 2019-07-30 通过施用抗体-药物缀合物对转移性脑肿瘤的治疗
SG11202100947SA SG11202100947SA (en) 2018-07-31 2019-07-30 Treatment of metastatic brain tumor by administration of antibody-drug conjugate
IL280510A IL280510B1 (en) 2018-07-31 2019-07-30 Antibody-drug conjugates for use in the treatment of metastatic brain tumors
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US17/264,250 US12220604B2 (en) 2018-07-31 2019-07-30 Treatment of metastatic brain tumor by administration of an antibody-drug conjugate
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