On a similar note, Chu et al. [13] in their study staining for multiple epithelial neoplasms, demonstrated 88% of the urothelial carcinomas to be CK7+, 25% to be CK7+/CK20+, while 100% of the prostate carcinomas to be CK7-/CK20-. The gene discussed is KRT7; the disease is urothelial carcinoma.