Is ATRN p.Ala3Val (c.8C>T) pathogenic?

ATRN p.Ala3Val (c.8C>T) is classified Uncertain significance in ATRN (ClinVar, Single submitter, 1 submitter; last evaluated 2024-12-04). AlphaMissense: likely benign (0.3226); Very rare (popmax 8.8e-05%, nfe).

How common is ATRN p.Ala3Val (c.8C>T) in the general population?

ATRN p.Ala3Val (c.8C>T) is very rare (popmax 8.8e-05%, nfe) (gnomAD).

What do computational predictors say about ATRN p.Ala3Val (c.8C>T)?

AlphaMissense predicts likely benign (score 0.3226) — an in-silico prediction, not a clinical call.

ATRN p.Ala3Val

c.8C>T · VCV3690555

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.3226 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.8e-05%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.3226	likely benign
REVEL	0.014	strongly benign-leaning
SaProt	LLR -7.81	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 2.3	GERP 0.55, phastCons 1
Regional constraint	o/e 0.89	unconstrained · MANE · 106 kb · p 0.00041 · regional, not allelic
Overall
CADD	16.9	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 8.8e-05% European (non-Finnish) · 1/1,135,976 alleles

Overall 7.36e-05% 1/1,358,338 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: ATRN
Protein: p.Ala3Val
Coding: c.8C>T
MANE Select: NM_139321
Type: single nucleotide variant
Location: chr20:3471115 (GRCh38)
Gene constraint: LOEUF 0.395 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 79.27

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

Similar variants

ATRN p.Ala438Gly Uncertain significance ★★ ⚠ same type
ATRN p.Ala87Val Uncertain significance ★★ ⚠ same type
ATRN p.Arg1417Gln Uncertain significance ★★ ⚠ same type
ATRN p.Arg173His Uncertain significance ★★ ⚠ same type
ATRN p.Asn1035Ser Uncertain significance ★★ ⚠ same type
ATRN p.Asn213Ser Uncertain significance ★★ ⚠ same type
ATRN p.Asn300Thr Uncertain significance ★★ ⚠ same type
ATRN p.Asp508Asn 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/atrn-p-ala3val (accessed [today's date]).

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