Interestingly, all three of these genes are related to immune system processes: MHCBL2 is a class II histocompatibility antigen, essential for immune function [73], IFNGR1 encodes the interferon gamma receptor 1, which is crucial for innate immune defense [74], and KLHDC7A is associated with diabetic retinopathy [75]. The gene discussed is KLHDC7A; the disease is diabetic retinopathy.