Zhu Zhu J J Armstrong Armstrong AJ AJ Friedlander Friedlander TW TW Biomarkers of immunotherapy in urothelial and renal cell carcinoma: PD-L1, tumor mutational burden, and beyond Biomarkers of immunotherapy in urothelial and renal cell carcinoma: PD-L1, tumor mutational burden, and beyond J Immunother Cancer J Immunother Cancer 2018 2018 6 6 4 4 10.1186/s40425-018-0314-1 10.1186/s40425-018-0314-1 29368638 29368638. This evidence concerns the gene CD274 and renal cell carcinoma.