U.S. flag

An official website of the United States government

GTR Home > Conditions/Phenotypes > Pitt-Hopkins syndrome

Pitt-Hopkins syndrome

Synonyms
ENCEPHALOPATHY, SEVERE EPILEPTIC, WITH AUTONOMIC DYSFUNCTION; MENTAL RETARDATION, SYNDROMAL, WITH INTERMITTENT HYPERVENTILATION; Mental retardation, wide mouth, distinctive facial features, and intermittent hyperventilation followed by apnea
Modes of inheritance
Autosomal dominant inheritance (Orphanet)

Summary

Excerpted from the GeneReview: Pitt-Hopkins Syndrome
Pitt-Hopkins syndrome (PTHS) is characterized by significant developmental delays with moderate-to-severe intellectual disability and behavioral differences, characteristic facial features, and episodic hyperventilation and/or breath-holding while awake. Speech is significantly delayed and most individuals are nonverbal with receptive language often stronger than expressive language. Other common findings are autism spectrum disorder symptoms, sleep disturbance, stereotypic hand movements, seizures, constipation, and severe myopia.
Full text of GeneReview (by section):
Summary
Diagnosis
Clinical Characteristics
Genetically Related (Allelic) Disorders
Differential Diagnosis
Management
Genetic Counseling
Resources
Molecular Genetics
References
Chapter Notes
Authors:
David A Sweetser
Ibrahim Elsharkawi
Lael Yonker
view full author information

Available tests

67 tests are in the database for this condition.

Check Related conditions for additional relevant tests.

Clinical tests (66 available)

Molecular Genetics Tests

Research tests

Genes See tests for all associated and related genes

  • Also known as: CDG2T, E2-2, FCD2, FECD3, ITF-2, ITF2, PTHS, SEF-2, SEF2, SEF2-1, SEF2-1A, SEF2-1B, SEF2-1D, TCF-4, bHLHb19, TCF4
    Summary: transcription factor 4

Clinical features

Help
Imported from Human Phenotype Ontology (HPO)

Show allHide all

IMPORTANT NOTE: NIH does not independently verify information submitted to the GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in the GTR. GTR is not a substitute for medical advice. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.