Patent ID: 9387247
Filing Date: 2016-07-12
CPC Classification: A61K,A61P,C07K,Y02A

Claim Text:
1. A monoclonal antibody or an antigen-binding portion thereof that cross-competes for binding to human PD-1 with a reference antibody or antigen-binding portion thereof, wherein the reference antibody or antigen-binding portion thereof comprises a heavy chain variable region that comprises CDR1, CDR2, and CDR3 domains and a light chain variable region that comprises CDR1, CDR2, and CDR3 domains selected from: (a) a heavy chain CDR1 comprising amino acids having the sequence set forth in SEQ ID NO: 15; a heavy chain CDR2 comprising amino acids having the sequence set forth in SEQ ID NO: 22; a heavy chain CDR3 comprising amino acids having the sequence set forth in SEQ ID NO: 29; a light chain CDR1 comprising amino acids having the sequence set forth in SEQ ID NO: 36; a light chain CDR2 comprising amino acids having the sequence set forth in SEQ ID NO: 43; and a light chain CDR3 comprising amino acids having the sequence set forth in SEQ ID NO: 50; (b) a heavy chain CDR1 comprising amino acids having the sequence set forth in SEQ ID NO: 16; a heavy chain CDR2 comprising amino acids having the sequence set forth in SEQ ID NO: 23; a heavy chain CDR3 comprising amino acids having the sequence set forth in SEQ ID NO: 30; a light chain CDR1 comprising amino acids having the sequence set forth in SEQ ID NO: 37; a light chain CDR2 comprising amino acids having the sequence set forth in SEQ ID NO: 44; and a light chain CDR3 comprising amino acids having the sequence set forth in SEQ ID NO: 51; (c) a heavy chain CDR1 comprising amino acids having the sequence set forth in SEQ ID NO: 18; a heavy chain CDR2 comprising amino acids having the sequence set forth in SEQ ID NO: 25; a heavy chain CDR3 comprising amino acids having the sequence set forth in SEQ ID NO: 32; a light chain CDR1 comprising amino acids having the sequence set forth in SEQ ID NO: 39; a light chain CDR2 comprising amino acids having the sequence set forth in SEQ ID NO: 46; and a light chain CDR3 comprising amino acids having the sequence set forth in SEQ ID NO: 53; and (d) a heavy chain CDR1 comprising amino acids having the sequence set forth in SEQ ID NO: 20; a heavy chain CDR2 comprising amino acids having the sequence set forth in SEQ ID NO: 27; a heavy chain CDR3 comprising amino acids having the sequence set forth in SEQ ID NO: 34; a light chain CDR1 comprising amino acids having the sequence set forth in SEQ ID NO: 41; a light chain CDR2 comprising amino acids having the sequence set forth in SEQ ID NO: 48; and a light chain CDR3 comprising amino acids having the sequence set forth in SEQ ID NO: 55; wherein the monoclonal antibody or antigen-binding portion thereof comprises a heavy chain variable region, which comprises CDR1, CDR2, CDR3, framework region (FR) 1, FR2, FR3, and FR4, and a light chain variable region, which comprises CDR1, CDR2, CDR3, FR1 FR2, FR3, and FR4, wherein the monoclonal antibody or antigen-binding portion thereof binds to human PD-1 with a K wherein the light chain variable region FR1 of the monoclonal antibody or antigen-binding portion thereof comprises the amino acid sequence of EIVLTQSPATLSLSPGERATLSC (SEQ ID NO: 75) or EIVLTQSPATLSLSPGERATLSC (SEQ ID NO: 75) containing one amino acid mutation.