Is A2ML1 p.Val888Asp (c.2663T>A) pathogenic?

A2ML1 p.Val888Asp (c.2663T>A) is classified Uncertain significance in A2ML1 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2023-07-15). AlphaMissense: likely benign (0.3314); Very rare (popmax 0.00017%, nfe).

How common is A2ML1 p.Val888Asp (c.2663T>A) in the general population?

A2ML1 p.Val888Asp (c.2663T>A) is very rare (popmax 0.00017%, nfe) (gnomAD).

What do computational predictors say about A2ML1 p.Val888Asp (c.2663T>A)?

AlphaMissense predicts likely benign (score 0.3314) — an in-silico prediction, not a clinical call.

A2ML1 p.Val888Asp

c.2663T>A · rs2539264083 · VCV2449337

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.3314 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00017%, nfe)

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.3314	likely benign
REVEL	0.298	indeterminate
SaProt	LLR -11.24	damaging
⇒ SaProt calls this damaging; AlphaMissense does not; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.1	GERP 0.62, phastCons 1
Regional constraint	o/e 0.94	unconstrained · MANE · 52 kb · p 0.02 · regional, not allelic
Overall
CADD	24.3	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00017% European (non-Finnish) · 2/1,178,066 alleles

Filtering AF 2.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.1e-05%

Overall 0.000137% 2/1,457,964 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: A2ML1
Protein: p.Val888Asp
Coding: c.2663T>A
MANE Select: NM_144670
dbSNP: rs2539264083
Type: single nucleotide variant
Location: chr12:8854200 (GRCh38)
Gene constraint: LOEUF 0.953 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 80.61 · 5 PDB
Residue 888: a UniProt-annotated variant site (risk factor for otitis media)

Full A2ML1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

A2ML1 p.Val888= Likely benign ★ same residue
A2ML1 p.Val888fs Uncertain significance ★ same residue
A2ML1 c.1834-1G>T Uncertain significance ★★ same type
A2ML1 c.3264+4C>T Uncertain significance ★★ same type
A2ML1 c.3933+4A>G Uncertain significance ★★ same type
A2ML1 c.409+1G>A Uncertain significance ★★ same type
A2ML1 c.4221+2T>C Uncertain significance ★★ same type
A2ML1 c.*1+1G>A 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/a2ml1-p-val888asp (accessed [today's date]).

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