Alternative titles and symbols : Cerebellar ataxia and hypogonadotropic hypogonadism; Lhrh deficiency and ataxia; Luteinizing hormone-releasing hormone, deficiency of, with ataxia; CAHH;
Description : The cases of Volpe et al. (1963) had eunuchoid skeletal features and low urinary gonadotropins
with the additional feature of cerebellar ataxia. Matthews and Rundle (1964) described
2 brothers with pure cerebellar ataxia beginning at about 20 years of age and associated
with marked hypogonadism due apparently to low gonadotropin excretion. Conclusive
evidence of autosomal recessive inheritance was presented also by Berciano et al.
(1982) who observed affected brother and sister with consanguineous parents. They
demonstrated, furthermore, that the hypogonadotropism was due to deficiency of hypothalamic
LHRH (luteinizing hormone-releasing hormone; LHRH; 152760); raised gonadotropin levels
were found after repeated stimulation with exogenous;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the RING finger protein 216 gene (RNF216, 609948.0001);