U.S. flag

An official website of the United States government

GTR Home > Conditions/Phenotypes > Epileptic encephalopathy, infantile or early childhood, 3

Summary

Developmental and epileptic encephalopathy (DEE93) is an autosomal dominant neurologic disorder characterized by delayed psychomotor development, early-onset refractory seizures, and impaired intellectual development. The severity of the phenotype is highly variable: some patients may be nonverbal and nonambulatory with spastic quadriparesis and poor eye contact, whereas others have moderate intellectual disability (summary by Fassio et al., 2018). For a discussion of genetic heterogeneity of DEE, see 308350. [from OMIM]

Available tests

10 tests are in the database for this condition.

Genes See tests for all associated and related genes

  • Also known as: ARCL2D, ATP6A1, ATP6V1A1, DEE93, HO68, IECEE3, VA68, VPP2, Vma1, ATP6V1A
    Summary: ATPase H+ transporting V1 subunit A

Clinical features

Help

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.