FCGR3A and inflammatory bowel disease: In fact, the genetic amino acid substitution p.V158F (rs396991) in the FCGR3A gene, which is well described in the literature, was found to affect the response to antibodies treatment in the case of inflammatory bowel disease (Louis et al., 2004; Moroi et al., 2013; Louis et al., 2016; Romero-Cara et al., 2018).