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Features include always present findings: Perisylvian polymicrogyria, Language impairment, and Seizure; and very common findings: Intellectual disability. 6 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 2 | Seizure, Intellectual disability |
ADGRG1 encodes adhesion G protein-coupled receptor G1 (693 aa). Adhesion G-protein coupled receptor (aGPCR) for steroid hormone 17alpha-hydroxypregnenolone (17-OH), which is involved in cell adhesion and cell-cell interactions. Highest expression in Thyroid (115.6 TPM) and Kidney Medulla (94.0 TPM).
Polymicrogyria, bilateral perisylvian, autosomal recessive is associated with mutations in the ADGRG1 gene on chromosome 16.
ADGRG1 is classified as a druggable target (Druggable Genome and G Protein Coupled Receptor categories) with score 0.0.
56 pathogenic variants reported in ADGRG1 in ClinVar, including hotspot variants 888059 and 158631.
Variant |
|---|
Genetic testing for ADGRG1 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 3 always present features, 1 very common feature.
No clinical trials have been registered for polymicrogyria, bilateral perisylvian, autosomal recessive.
1 publication has been identified in PubMed for polymicrogyria, bilateral perisylvian, autosomal recessive. Research spans Case Report / Case Series (100%).
Frolov A (2024). [PMID: 39717325](https://pubmed.ncbi.nlm.nih.gov/39717325/). *Cureus*. [Case Report / Case Series]
Data assembled from 6 of 12 sources · Last updated Sep 19, 2026, 9:41 PM UTC
Online Mendelian Inheritance in Man
Genetic and Rare Diseases Info Center
Significance
Review Stars |
|---|
Hotspot |
|---|
888059 | Conflicting classifications of pathogenicity | — | Yes |
158631 | Conflicting classifications of pathogenicity | — | Yes |
NP_001139242.1:p.Gln247fs | Pathogenic | 2 stars | Yes |