HUMAN MONOCLONAL ANTIBODY TO PROGRAMMED DEATH 1 (PD-1), AND CANCER THERAPEUTIC METHOD SINGLY USING ANTI-PD-1 ANTIBODY OR CONCURRENTLY USING WITH OTHER IMMUNOTHERAPY
PROBLEM TO BE SOLVED: To provide isolated monoclonal antibodies, particularly human monoclonal antibodies, that specifically bind to Programmed Death 1 (PD-1) with high affinity.SOLUTION: There are provided: isolated human monoclonal antibodies cross-competing for binding to a reference antibody including human heavy chain and light chain variable regions composed of specific amino acid sequences, and PD-1; or a binding portion thereof. A method for detecting PD-1 is provided and various diseases including cancer and infectious diseases can be treated by preparing immunocomplexes, bispecific molecules and pharmaceutical compositions containing the antibodies. Furthermore, hyperproliferative diseases such as cancer can also be treated by a combination immunotherapy such as a combination of anti-CTLA-4 and anti-PD-1 antibodies. Adverse events related to treatment with each of the antibodies are altered.【課題】高親和性でProgrammed Death 1(PD-1)に特異的に結合する単離モノクローナル抗体、特に、ヒトモノクローナル抗体を提供する。【解決手段】特定のアミノ酸配列からなるヒト重鎖及び軽鎖可変領域を含む参考抗体とPD-1に対する結合について交差競合する単離ヒトモノクローナル抗体またはその結合部分。抗体を含む免疫複合物、二重特異性分子および薬剤組成物を調製することにより、PD-1検出方法ならびに癌および感染性疾患を含む様々な疾患を治療することが可能となる。さらに、抗CTLA-4および抗PD-1抗体の併用のような併用免疫療法を用いて癌のような高増殖性疾患を治療することも可能となる。このような抗体のそれぞれによる治療に関連した有害事象を改変する。【選択図】なし