<unk>  is a condition caused by mutations in certain genes of the major histocompatibility complex or involved with the processing and presentation of MHC molecules. It is a form of severe combined immunodeficiency.
Bare lymphocyte syndrome
Kasabach-Merritt syndrome
Post transplant lymphoproliferative disorder
Immune reconstitution inflammatory syndrome
Autoimmune lymphoproliferative syndrome
SAPHO syndrome
Schwartz–Jampel syndrome
AIDS-related complex