Is COMMD4 p.Leu76Val (c.226C>G) pathogenic?

COMMD4 p.Leu76Val (c.226C>G) is classified Uncertain significance in COMMD4 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-03-20). AlphaMissense: likely benign (0.1592); Very rare (popmax 0.00333%, amr).

How common is COMMD4 p.Leu76Val (c.226C>G) in the general population?

COMMD4 p.Leu76Val (c.226C>G) is very rare (popmax 0.00333%, amr) (gnomAD).

What do computational predictors say about COMMD4 p.Leu76Val (c.226C>G)?

AlphaMissense predicts likely benign (score 0.1592) — an in-silico prediction, not a clinical call.

COMMD4 p.Leu76Val

c.226C>G · VCV3268924

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1592 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00333%, amr)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1592	likely benign
REVEL	0.124	moderately benign-leaning
SaProt	LLR -10.04	damaging
⇒ SaProt calls this damaging; AlphaMissense and REVEL do not.
Splicing
SpliceAI	Δ0.36	acceptor loss, 8 bp away · masked 0 · deltas
Constraint at this position
Conservation	phyloP 4.8	GERP 1.4, phastCons 1
Regional constraint	o/e 0.97	unconstrained · MANE · 3,912 bp · p 0.66 · regional, not allelic
Overall
CADD	24.6	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 0.00333% Admixed American · 2/59,996 alleles

Filtering AF 0.000553% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000207%

Overall 0.000186% 3/1,613,776 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00333%	29,998
East Asian	0.00223%	44,896

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: COMMD4
Protein: p.Leu76Val
Coding: c.226C>G
MANE Select: NM_017828
Type: single nucleotide variant
Location: chr15:75339029 (GRCh38)
Gene constraint: LOEUF 0.982 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 80.85 · 4 PDB
Residue 76: an α-helix

Full COMMD4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

COMMD4 p.Ala103Thr Uncertain significance ★ ⚠ same type
COMMD4 p.Ala103Val Uncertain significance ★ ⚠ same type
COMMD4 p.Ala132Thr Uncertain significance ★ ⚠ same type
COMMD4 p.Ala163Thr Uncertain significance ★ ⚠ same type
COMMD4 p.Ala191Thr Uncertain significance ★ ⚠ same type
COMMD4 p.Arg108His Uncertain significance ★ ⚠ same type
COMMD4 p.Arg122Trp Uncertain significance ★ ⚠ same type
COMMD4 p.Arg127Gly 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/commd4-p-leu76val (accessed [today's date]).

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