multiple congenital anomalies-hypotonia-seizures syndrome 2

Summary
Synonym
  • developmental and epileptic encephalopathy 20
  • early infantile epileptic encephalopathy 20
  • glycosylphosphatidylinositol biosynthesis defect 4
Definition
A multiple congenital anomalies-hypotonia-seizures syndrome that is characterized by X-linked recessive inheritance of dysmorphic features, neonatal hypotonia, myoclonic seizures and variable abnormalities involving the central nervous, cardiac, and urinary systems that has_material_basis_in mutation in the PIGA gene on chromosome Xp22.
Super Class
X-linked recessive disease multiple congenital anomalies-hypotonia-seizures syndrome
Disease Ontology
DOID:0080139
Mondo Disease Ontology
ORDO
GARD
Related Genes
Displaying 1 entry
Gene ID Gene Symbol Description Source
5277 PIGA phosphatidylinositol glycan anchor biosynthesis class A
Displaying 1 entry
Gene ID Gene Symbol Description Source
37020 PIG-A Phosphatidylinositol glycan anchor biosynthesis class A
Related Glycoprotein
The Human Phenotype Ontology
Displaying entries 41 - 50 of 79 in total
HPO ID HPO Term
HP:0001522 Death in infancy
HP:0001548 Overgrowth
HP:0001561 Polyhydramnios
HP:0001623 Breech presentation
HP:0001631 Atrial septal defect
HP:0001643 Patent ductus arteriosus
HP:0001789 Hydrops fetalis
HP:0001792 Small nail
HP:0002061 Lower limb spasticity
HP:0002079 Hypoplasia of the corpus callosum
Displaying 1 entry
Gene ID Gene Symbol Description
5277 PIGA phosphatidylinositol glycan anchor biosynthesis class A

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Acknowledgements

Supported by JST NBDC Grant Number JPMJND2204

Partly supported by NIH Common Fund Grant #1U01GM125267-01


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Last updated: April 6, 2026