ABCG2 and inflammatory bowel disease: Also referred to as xenobiotic acetyltransferase,” ardb 17 is “Virginiamycin A acetyltransferase, which can inactivate the target drug,” ardb 1 is “VanG type vancomycin resistance operon genes, which can synthesize peptidoglycan with modified C-terminal D-Ala-D-Ala to D-alanine--D-serine,” ardb 10 is “ABC transporter system, bacitracin efflux pump.” It is possible that the MFGC with different z-values may play a distinct role in the development of IBD.