22 ERV-derived peptides identified from 11 ccRCC patients.*indicates peptides that were tumor-specific based on analysis of available paired normal kidney tissue. HIF2-responsive ERV column indicates potential source ERV(s) for each peptide from the 81 ERVs identified in 786-O and A-498 cells. No. of possible coding ERVs column indicates the number of potential source ERVs for the peptides. Peptides that uniquely mapped to one HIF2-responsive ERV are shown in (B).