" /> Leukodystrophy, hypomyelinating, 7, with or without oligodontia and/or hypogonadotropic hypogonadism - CISMeF





Preferred Label : Leukodystrophy, hypomyelinating, 7, with or without oligodontia and/or hypogonadotropic hypogonadism;

Symbol : HLD7;

CISMeF acronym : HLD7;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : ADDH; Leukoencephalopathy, hypomyelinating, with ataxia and delayed dentition; Leukodystrophy, hypomyelinating, with hypodontia and hypogonadotropic hypogonadism; Ataxia, delayed dentition, and hypomyelination; 4h syndrome; 4h leukodystrophy 1;

Description : Hypomyelinating leukodystrophy-7 is an autosomal recessive neurodegenerative disorder characterized by childhood onset of progressive motor decline manifest as spasticity, ataxia, tremor, and cerebellar signs, as well as mild cognitive regression. Other features may include hypodontia or oligodontia and hypogonadotropic hypogonadism. There is considerable inter- and intrafamilial variability (summary by Bernard et al., 2011). See also HLD8 (614381), which has similar features and is caused by mutation in the POLR3B gene (614366) on chromosome 12q23. The POLR3A and;

Inheritance : Autosomal recessive;

Molecular basis : Caused by mutation in the RNA polymerase III, subunit A gene (POLR3A, 614258.0001);

Prefixed ID : #607694;

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29/07/2025


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