Search for a rare disease

* (*) mandatory field

Other search option(s)

Suggest an update

(*) Required fields.


Only comments seeking to improve the quality and accuracy of information on the Orphanet website are accepted. For all other comments, please send your remarks via contact us. Only comments written in English can be processed.

Captcha image

Familial isolated hypoparathyroidism due to agenesis of parathyroid gland

Disease definition

X-linked recessive hypoparathyroidism (XLHPT) is a very rare cause of hypoparathyroidism. It has been reported in two multigeneration families from Missouri. Affected males suffer from true neonatal idiopathic hypoparathyroidism leading to severe hypocalcemia with undetectable parathyroid hormone levels and epilepsy. They are also sterile. Carrier females are normocalcemic and asymptomatic. XLHPT is caused by congenital parathyroid gland agenesis. The XLHPT locus has been mapped to chromosome Xq26-q27, in a 1.5 Mb interval flanked by markers F9 and DXS984. Neonatal onset and parathyroid agenesis found at autopsy in one of the patients suggest that the gene involved in XLHPT plays a role in parathyroid gland development.


Classification level: Subtype of disorder
  • Synonym(s): -
  • Prevalence: <1 / 1 000 000
  • Inheritance: Autosomal recessive or X-linked recessive 
  • Age of onset: Infancy, Neonatal
  • ICD-10: E20.8
  • OMIM: 146200  307700
  • UMLS: -
  • MeSH: -
  • GARD: -
  • MedDRA: -

Detailed information

Article for general public


The documents contained in this web site are presented for information purposes only. The material is in no way intended to replace professional medical care by a qualified specialist and should not be used as a basis for diagnosis or treatment.