Provided herein are HLA-PEPTIDE targets and antigen binding proteins that bind HLA-PEPTIDE targets. Also disclosed are methods for identifying the HLA-PEPTIDE targets as well as identifying one or more antigen binding proteins that bind a given HLA-PEPTIDE target.本發明提供HLA-肽靶及結合HLA-肽靶之抗原結合蛋白。本發明亦揭示鑑別該等HLA-肽靶以及鑑別結合特定HLA-肽靶之一或多種抗原結合蛋白之方法。