P4HA1 and pancreatic adenocarcinoma: An increased P4HA1 expression was remarkedly associated with poor survival in ACC, BLCA, CESC, chromophobe RCC, papillary RCC, LUAD, LUSC, MESO, PAAD, PCPG, SARC, THCA, and UVM, whereas it was associated with better survival in clear cell RCC.