FimH was reported to adhere to the MGP carcinoembryonic antigen-related cell adhesion molecule 6 (CEACAM6) overexpressed and exposed on epithelial cells of the gastrointestinal tract in the case of CD and AIEC [13,16] and to the MGP Uroplakin Ia (UPIa), present on the surface of epithelial umbrella cells of the urinary tract, in the case of UTI and UPEC [17]. The gene discussed is UPK1A; the disease is bacterial urinary tract infection.