Albeit limited by the number of included T1D islet recipients, we noted that the HLA-A and HLA-B matches were similar between group B and C and lower in group A. The number of infused islets equivalent (IEQ), individuals transplanted after 2010, cold ischemia time, cause of donor death, gender, and age were similar between the three groups (Table 3). The gene discussed is HLA-B; the disease is type 1 diabetes mellitus.