MHC class I deficiency https://github.com/monarch-initiative/mondo/issues/4521 https://www.malacards.org/card/immunodeficiency_by_defective_expression_of_mhc_class_i https://www.malacards.org/card/mhc_class_i_deficiency Bare lymphocyte syndrome type 1 Orphanet:34592 GARD:0009548 OMIMPS:604571 UMLS:C1858266 NANDO:1200328 DOID:0060009 MONDO:0011476 MEDGEN:346868 BLS type 1 NANDO:2200701 Immunodeficiency by defective expression of HLA class 1 is a very rare, primary, genetic, immunodeficiency disorder characterized by partial or complete absence of human leukocyte antigen class I expression resulting in a non-specific clinical picture of impaired immune response and susceptibility to infections. immunodeficiency by defective expression of HLA class type 1 icd11.foundation:489749747 immunodeficiency by defective expression of HLA class 1 SCTID:725136003 combined immunodeficiency severe combined immunodeficiency non-SCID combined immunodeficiency