bilateral frontoparietal polymicrogyria

Summary
Definition
A polymicrogyria that is characterized by excessive cortical folding and abnormal cortical layering, that involves the frontoparietal region of the brain and that presents with hypotonia, developmental delay, moderate to severe intellectual disability, pyramidal signs, epileptic seizures, non progressive cerebellar ataxia, dysconjugate gaze and/or strabismus and that has_material_basis_in homozygous mutation in the ADGRG1 gene on chromosome 16q21.
Super Class
autosomal recessive disease polymicrogyria
Disease Ontology
DOID:0080922
Mondo Disease Ontology
NCI Thesaurus
GARD
Related Genes
Displaying 1 entry
Gene ID Gene Symbol Description Source
9289 ADGRG1 adhesion G protein-coupled receptor G1
Related Glycoprotein
Displaying 1 entry
UniProt ID Protein Name Source
Q9Y653 Adhesion G-protein coupled receptor G1
The Human Phenotype Ontology
Displaying entries 1 - 10 of 22 in total
HPO ID HPO Term
HP:0001317 Abnormal cerebellum morphology
HP:0001249 Intellectual disability
HP:0002141 Gait imbalance
HP:0000486 Strabismus
HP:0002119 Ventriculomegaly
HP:0002463 Language impairment
HP:0001263 Global developmental delay
HP:0000252 Microcephaly
HP:0001320 Cerebellar vermis hypoplasia
HP:0002365 Hypoplasia of the brainstem
Displaying 1 entry
Gene ID Gene Symbol Description
5728 PTEN phosphatase and tensin homolog

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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: December 8, 2025