Is CD226 p.Trp50Arg (c.148T>A) pathogenic?

CD226 p.Trp50Arg (c.148T>A) is classified Uncertain significance in CD226 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-02-15). AlphaMissense: likely pathogenic (0.9857); Very rare (popmax 0.000593%, nfe).

How common is CD226 p.Trp50Arg (c.148T>A) in the general population?

CD226 p.Trp50Arg (c.148T>A) is very rare (popmax 0.000593%, nfe) (gnomAD).

What do computational predictors say about CD226 p.Trp50Arg (c.148T>A)?

AlphaMissense predicts likely pathogenic (score 0.9857) — an in-silico prediction, not a clinical call.

CD226 p.Trp50Arg

c.148T>A · rs1320655737 · VCV2484925

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9857 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000593%, nfe)

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9857	likely pathogenic · top 1% in CD226
REVEL	0.864	moderately pathogenic-leaning
SaProt	LLR -13.69	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 83 kb · p 0.44 · regional, not allelic
Overall
CADD	25.6	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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 0.000593% European (non-Finnish) · 7/1,179,990 alleles

Filtering AF 0.000247% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000159%

Overall 0.000479% 7/1,461,866 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: CD226
Protein: p.Trp50Arg
Coding: c.148T>A
MANE Select: NM_001303618
dbSNP: rs1320655737
Type: single nucleotide variant
Location: chr18:69946968 (GRCh38)
Gene constraint: LOEUF 1.012 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 82.75 · 2 PDB
Residue 50: a disulfide bond; a β-strand; the ig-like c2-type 1 domain

Full CD226 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CD226 p.Ala133Val Uncertain significance ★ ⚠ same type
CD226 p.Ala16Gly Uncertain significance ★ ⚠ same type
CD226 p.Ala226Thr Uncertain significance ★ ⚠ same type
CD226 p.Ala76Thr Uncertain significance ★ ⚠ same type
CD226 p.Ala76Val Uncertain significance ★ ⚠ same type
CD226 p.Ala9Pro Uncertain significance ★ ⚠ same type
CD226 p.Arg193Gly Uncertain significance ★ ⚠ same type
CD226 p.Asn198Thr 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/cd226-p-trp50arg (accessed [today's date]).

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