The results indicated that for urothelial carcinoma, overall 100% were CK7+, 89% were CK7+/CK20+, and none were CK7-/CK20-; however, for prostate carcinomas, 62% were CK7-/CK20-, and only 8% was CK7+[4]. Here, KRT7 is linked to prostate carcinoma.