RCC1 and kidney cancer: Interestingly, recognition the HERV-E.CT-RCC-1 antigen, which carries a shorter sequence of the common region of HERV-E.CT-RCC-8 and -9, by T cells was associated with the regression of human kidney cancer following unrelated allogeneic stem cell transplantation, suggesting its potential as a target for antitumor therapies [88].