Disease & disorder

Hypoglossia-hypodactyly syndrome

MONDO:0007073

A rare condition that primarily affects the craniofacial region and the limbs (arms and legs). People affected by this condition are often born with a short, incompletely developed tongue; absent or partially missing fingers and/or toes; abnormalities of the arms and/or legs; and an extremely small jaw. The severity of these physical abnormalities varies greatly among affected people, and children with this condition often have some, but not all, of the symptoms. The cause of Hanhart syndrome is not fully understood. Treatment depends on the signs and symptoms present in each person.

Clinical trials0
Recruiting0
Drug concepts studied0
Synonyms6

Disease research snapshot

No clinical trials have been linked to this exact normalized concept in the current published dataset. This is a coverage limitation, not evidence that the condition or medicine has never been studied. Try a synonym or browse registry-reported labels.

Numbers are derived from CureCurrent's current ClinicalTrials.gov projection and conservative MONDO/RxNorm mappings. See sources, counting rules and limitations and verify eligibility or clinical findings with the original study record.

Research intelligence

Directly mapped studies only · unique clinical trials

Current registry observations. Phase counts may overlap. Study start dates are not registry registration dates. Investigational interventions are not approved-treatment recommendations.

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Background context

Hanhart syndrome

Hanhart syndrome is a broadly classified medical condition consisting of congenital disorders that cause an undeveloped tongue and malformed extremities and fingers. There exist five types of Hanhart syndrome, with the severity and nature of the condition ranging widely on a case-by-case basis. Hanhart syndrome is classified as a rare disease, with approximately 30 known cases having been reported between 1932 and 1991. Early hypotheses believed that the disorder was caused by genetic conditions, with a more recent hypothesis demonstrating that the disorder may be caused by hemorrhagic lesions during prenatal development. The causal mechanism behind this vascular disruption is still unknown.

Background only. Canonical identity remains MONDO; clinical-trial relationships come from ClinicalTrials.gov.

Drugs being studied

Disease identity and terminology: MONDO. Trial relationships: ClinicalTrials.gov.