Is ADD2 p.Ala150Val (c.449C>T) pathogenic?

ADD2 p.Ala150Val (c.449C>T) is classified Uncertain significance in ADD2 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-09-22). AlphaMissense: likely benign (0.1831); Absent from gnomAD v4.1.

How common is ADD2 p.Ala150Val (c.449C>T) in the general population?

ADD2 p.Ala150Val (c.449C>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about ADD2 p.Ala150Val (c.449C>T)?

AlphaMissense predicts likely benign (score 0.1831) — an in-silico prediction, not a clinical call.

ADD2 p.Ala150Val

c.449C>T · rs2466550794 · VCV2313150

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1831 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.1831	likely benign
REVEL	0.394	indeterminate
SaProt	LLR -7.03	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 2.7, phastCons 1
Regional constraint	o/e 0.32	constrained · MANE · 521 bp · p 0.00016 · regional, not allelic
Overall
CADD	29.2	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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: ADD2
Protein: p.Ala150Val
Coding: c.449C>T
MANE Select: NM_001617
dbSNP: rs2466550794
Type: single nucleotide variant
Location: chr2:70696270 (GRCh38)
Gene constraint: LOEUF 0.388 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 66.51

Full ADD2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ADD2 p.Asp28Asn Benign ★★ ⚠ same type
ADD2 p.Glu335Asp Benign ★★ same type
ADD2 p.Gly17Glu Benign ★★ same type
ADD2 p.Ala232Gly Uncertain significance ★ ⚠ same type
ADD2 p.Ala312Thr Uncertain significance ★ ⚠ same type
ADD2 p.Ala418Pro Uncertain significance ★ ⚠ same type
ADD2 p.Ala606Val Uncertain significance ★ ⚠ same type
ADD2 p.Ala609Thr 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/add2-p-ala150val (accessed [today's date]).

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