Is ARHGAP31 p.Tyr36= (c.108C>T) pathogenic?

ARHGAP31 p.Tyr36= (c.108C>T) is classified Likely benign in ARHGAP31 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-12-25). Very rare (popmax 0.00988%, sas).

How common is ARHGAP31 p.Tyr36= (c.108C>T) in the general population?

ARHGAP31 p.Tyr36= (c.108C>T) is very rare (popmax 0.00988%, sas) (gnomAD).

ARHGAP31 p.Tyr36=

c.108C>T · VCV4754806

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00988%, sas)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.96	GERP -1.8, phastCons 1
Overall
CADD	10.98	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00988% South Asian · 9/91,078 alleles

Filtering AF 0.00514% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00375%

Overall 0.000806% 13/1,613,382 alleles · very rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00988%	10,120
Admixed American	0.00167%	60,002
European (non-Finnish)	0.000254%	393,238

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: ARHGAP31
Protein: p.Tyr36=
Coding: c.108C>T
MANE Select: NM_020754
Type: single nucleotide variant
Location: chr3:119365323 (GRCh38)
Gene constraint: LOEUF 0.38 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 43.32
Residue 36: the rho-gap domain

Full ARHGAP31 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ARHGAP31 p.Ala18Val Uncertain significance ★★ ⚠ same type
ARHGAP31 p.Ala634Asp Uncertain significance ★★ ⚠ same type
ARHGAP31 p.Arg1377Ser Uncertain significance ★★ ⚠ same type
ARHGAP31 p.Arg199Gln Uncertain significance ★★ ⚠ same type
ARHGAP31 p.Arg256Cys Uncertain significance ★★ ⚠ same type
ARHGAP31 p.Arg426Gly Uncertain significance ★★ ⚠ same type
ARHGAP31 p.Arg478His Uncertain significance ★★ ⚠ same type
ARHGAP31 p.Arg510Ser Uncertain significance ★★ ⚠ same type

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/arhgap31-p-tyr36 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown