RB1 and glioblastoma: Additional tumor types exhibiting relatively high TP53/RB1 co‐alteration frequencies included skin cutaneous carcinoma (SKCC) (18.24%), SARC (16.99%), glioblastoma multiforme (GBM) (7.54%), liver hepatocellular carcinoma (LIHC) (6.30%), and esophageal carcinoma (ESCA) (5.81%) (Table 1).