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Hypomyelination-hypogonadotropic hypogonadism-hypodontia syndrome

Synonym(s) 4H syndrome
Prevalence <1 / 1 000 000
Inheritance Autosomal recessive
Age of onset Childhood
  • G11.1
MeSH -
MedDRA -


Disease definition

Hypomyelination-hypogonadotropic hypogonadism-hypodontia syndrome is characterised by the association of demyelinating leukodystrophy with progressive cerebellar ataxia, hypogonadotropic hypogonadism and hypodontia.


It has been diagnosed in four unrelated patients.


These symptoms suggest the association of a myelination defect (of the central and peripheral nervous systems) with an endocrinal deficiency of the pituitary gland.

Genetic counseling

The mode of transmission may be either autosomal recessive or dominant.

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Detailed information

Review article
Article for general public
Clinical genetics review
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