MICA and acute graft versus host disease: MICA genotype matching and MICB genotype matching were associated with improved survival after HSCT (Kitcharoen et al, 2006), whereas mismatching was associated with increased incidence of acute GVHD (aGVHD; Parmar et al, 2009; Askar et al, 2014) although not in all studies (Anderson et al, 2009).