DROSHA and bladder transitional cell carcinoma: The per-cancer study showed that DROSHA mutation was impoverished in (a) lymph node metastatic in STAD tumors (p = 0.026) and COAD (p = 0.024), and (b) late (III/IV) stages in BLCA (p = 0.047) and UCEC (p = 0.036) cancers.