Is AVIL p.Ser231Ala (c.691T>G) pathogenic?

AVIL p.Ser231Ala (c.691T>G) is classified Uncertain significance in AVIL (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-19). AlphaMissense: likely benign (0.0811); Very rare (popmax 0.000254%, nfe).

How common is AVIL p.Ser231Ala (c.691T>G) in the general population?

AVIL p.Ser231Ala (c.691T>G) is very rare (popmax 0.000254%, nfe) (gnomAD).

What do computational predictors say about AVIL p.Ser231Ala (c.691T>G)?

AlphaMissense predicts likely benign (score 0.0811) — an in-silico prediction, not a clinical call.

AVIL p.Ser231Ala

c.691T>G · VCV4186385

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0811 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000254%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0811	likely benign
REVEL	0.03	moderately benign-leaning
SaProt	LLR -0.91	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.7	GERP -1.4, phastCons 1
Regional constraint	o/e 0.88	unconstrained · MANE · 18 kb · p 9.4e-05 · regional, not allelic
Overall
CADD	14.13	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000254% European (non-Finnish) · 3/1,180,044 alleles

Filtering AF 6.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.9e-05%

Overall 0.000205% 3/1,461,894 alleles · very rare

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: AVIL
Protein: p.Ser231Ala
Coding: c.691T>G
MANE Select: NM_006576
Type: single nucleotide variant
Location: chr12:57810419 (GRCh38)
Gene constraint: LOEUF 0.81 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 79.82 · 1 PDB
Residue 231: the 'core' region

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

Similar variants

AVIL p.Arg199Ter Likely pathogenic ★★ same type
AVIL p.Asn777Lys Uncertain significance ★★ ⚠ same type
AVIL p.Gly577Ser Uncertain significance ★★ ⚠ same type
AVIL p.Gly626Ser Uncertain significance ★★ ⚠ same type
AVIL p.Ile250Thr Uncertain significance ★★ ⚠ same type
AVIL c.1194+202C>T Benign ★★ same type
AVIL c.2151+142A>G Benign ★★ same type
AVIL c.67-155C>T Benign ★★ 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/avil-p-ser231ala (accessed [today's date]).

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