Somatic alterations consistent with sporadic urothelial carcinoma: KRAS:c.35G>A (p.Gly12Asp); TP53:c.725G>A (p.Cys242Tyr); Two-copies deletion of CDKN2A at 9p21.3; single copy deletion of TP53 at 17p13.1 The gene discussed is CDKN2A; the disease is urothelial carcinoma.