NFIA, NFIB and NFIC expressions were decreased in both superficial bladder cancer and infiltrating bladder urothelial carcinoma compared with normal tissues in Lee (Lee et al., 2010), Sanchez-Carbayo2 and Blaveri2’s studies (Blaveri et al., 2005; Sanchez-Carbayo et al., 2006). Here, NFIB is linked to infiltrating bladder urothelial carcinoma.