Preferred Label : Methylmalonic aciduria and homocystinuria, cblx type;
Symbol : MAHCX;
CISMeF acronym : MRX3;
Type : Phenotype, molecular basis known;
Alternative titles and symbols : MRX3; Mental retardation, X-linked 3; Methylmalonic acidemia and homocysteinemia, cblx type; XLID3; Intellectual developmental disorder, X-linked 3;
Description : Methylmalonic acidemia and homocysteinemia, cblX type, is an X-linked recessive metabolic
disorder characterized by severely delayed psychomotor development apparent in infancy.
It is associated with failure to thrive, mental retardation, and intractable epilepsy.
Additional features may include microcephaly and choreoathetosis (summary by Yu et
al., 2013).;
Inheritance : X-linked recessive;
Molecular basis : Caused by mutation in the host cell factor C1 gene (HCFC1, 300019.0001);
Laboratory abnormalities : Methylmalonic aciduria; Homocysteinemia (in some patients); Methylmalonic acidemia; Homocystinuria (in some patients);
Prefixed ID : #309541;
Origin ID : 309541;
UMLS CUI : C0796208;
Automatic exact mappings (from CISMeF team)
Currated CISMeF NLP mapping
DO Cross reference
Genes related to phenotype
HPO term(s)
ORDO concept(s)
See also inter- (CISMeF)
Semantic type(s)
UMLS correspondences (same concept)