CD274 and thymoma: Notably, SHROOM2 expression was positively correlated with PD-L1 (CD274) in BRCA, CESC, COAD, COADREAD, GBM, KICH, kidney renal papillary cell carcinoma (KIRP), LGG, LIHC, LUSC, PRAD, SARC, STES, TGCT, thymoma (THYM), and Wilms tumor (WT) (Fig. 6A).