FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term MHC class I deficiency ID (Ontology) DOID:0060009 (Human Disease)
Definition A severe combined immunodeficiency that is characterized by recurrent bacterial, viral, and fungal infections, especially of the lung, and sterile necrotizing granulomas of the skin, develops_from deficiency or decreased surface expression of MHC Class I, has_material_basis_in autosomal recessive inheritance of mutation affecting MHC Class I production or expression and frequently involves TAP1 and TAP2 subunits, and is typically asymptomatic in infancy.
Also Known As "bare lymphocyte syndrome type I" ; "BLS, TYPE I" ; "BLSI" (for all, see Synonyms field below)
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 Genes
 MHC class I deficiency       2
 for disease ribbon | MHC class I deficiency       2
 model of | MHC class I deficiency       2
Spanning Tree (Parents/Children)
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  combined immunodeficiency
   |__severe combined immunodeficiency
       |__MHC class I deficiency  2 rec.
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Is a severe combined immunodeficiency
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Synonyms
  • "bare lymphocyte syndrome type I" EXACT
    "BLS, TYPE I" EXACT
    "BLSI" EXACT OMO:0003012
    "HLA CLASS I DEFICIENCY" EXACT
Secondary IDs
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MIM:604571