MGAM and bladder transitional cell carcinoma: Pan‐cancer analysis of RNA‐seq data highlighted significant differences in MGAM expression in urothelial bladder carcinoma (BLCA), lymphoid neoplasm diffuse large B‐cell lymphoma (DLBC), kidney renal clear cell carcinoma (KIRC), lung adenocarcinoma (LUAD), lung squamous cell carcinoma (LUSC), pancreatic adenocarcinoma (PAAD), sarcoma (SARC), and thymoma (THYM).