The results of UALCAN database analysis showed that the mRNA expression levels of CALR, CREB3L3, FBOX6, and KDELR3 were increased in cancer tissues compared with normal tissues, while the mRNA expression levels of CRYAB, DNAJB4, and HSPB6 were decreased in BLCA. Here, DNAJB4 is linked to bladder transitional cell carcinoma.