Figure 6. USP18 immunostaining is augmented in human lung adenocarcinomas with activating KRAS mutations.
Representative immunostaining of human lung adenocarcinomas with (A) low versus high USP18 expression. (B) Representative USP18 expression profiles are shown for KRAS wild-type versus mutant lung cancers relative to adjacent normal lung tissues. All magnifications are 40X. (C) USP18 immunostaining in normal (n = 76) versus malignant (n = 81) lung was compared and significantly higher (P < 0.001) USP18 levels were detected in the malignant lung. (D) USP18 immunostaining was compared in KRAS wild-type (n = 42) versus mutant (n = 39) lung cancer cases and significantly (P < 0.05) higher USP18 expression was evident in cases where mutant KRAS was detected.