CIITA - dismech genes

In the knowledge base · computed from kb/ at build time

Disorders

Relationship is the entry's genetic[].relationship_type. untyped means the entry has a genetic record for the gene but does not type it; its free-text association is shown instead.

Disorder	Relationship	Where the gene appears
Classic Hodgkin Lymphoma	somatic driver somatic	mechanism: Mutation-Driven MHC Class II Loss
Addison's Disease	untyped Master regulator of MHC class II expression	mechanism: Polygenic Susceptibility
Hodgkin Lymphoma	untyped Somatic Rearrangement/Fusion somatic	mechanism: Mutation-Driven MHC Class II Loss (Classic HL) subtype: Classic HL
MHC class II deficiency	untyped Causative	mechanism: MHC-II regulatory gene disruption subtype: MHC class II deficiency 1

ClinGen gene–disease validity · snapshot 2026-10-03 · matched to entries by MONDO

An entry matches when ClinGen's MONDO disease is the entry's own disease term, a subtype term, or an exact-match mapping. An amber status marks an entry ClinGen supports the gene for (Definitive, Strong or Moderate) whose own record does not type it. A Limited, Disputed or Refuted tier on such an entry is not a gap.

ClinGen disease	MOI	Classification	dismech entry
MHC class II deficiency MONDO:0008855	AR	Definitive 2022-11-03	MHC class II deficiency untyped

Identity from HGNC (snapshot 2026-10-01). Page layers are described in the gene pages documentation.