The association of demographics and tumor characteristics of OvCa patients with tumor antigen presentation was analyzed using sample mass-normalized mass spectrometry-derived immunopeptidome data of total OvCa-associated HLA class I- and HLA II-restricted peptides, as well as MUC16-derived HLA class I- and MSLN-derived HLA class II-restricted peptides. This evidence concerns the gene MUC16 and neoplasm.