RPS21 and neoplasm: In the unirradiated tumor, PRT + αPD1 exhibited a significant upregulation of genes encoding ribosomal proteins including Rpl34, Rpl36, Rpl37, Rpl39, Rpl37a, Rpl38, Rps29, Rps28, Rps27, Rps21, and Trbv3 (T Cell Receptor Beta Variable 3), as compared to XRT + αPD1 (Fig. 3B), for cytotoxic T cells, NKT cells, DCs and Treg.