Is CCPG1 p.Ala576Val (c.1727C>T) pathogenic?

CCPG1 p.Ala576Val (c.1727C>T) is classified Uncertain significance in CCPG1 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-07-27). AlphaMissense: likely benign (0.075); Rare (popmax 0.462%, mid).

How common is CCPG1 p.Ala576Val (c.1727C>T) in the general population?

CCPG1 p.Ala576Val (c.1727C>T) is rare (popmax 0.462%, mid) (gnomAD).

What do computational predictors say about CCPG1 p.Ala576Val (c.1727C>T)?

AlphaMissense predicts likely benign (score 0.075) — an in-silico prediction, not a clinical call.

CCPG1 p.Ala576Val

c.1727C>T · rs201840284 · VCV2372975

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.075 · ACMG-weighted

gnomAD v4.1

Rare

rare (popmax 0.462%, mid)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.075	likely benign
REVEL	0.059	moderately benign-leaning
SaProt	LLR -5.95	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 3.9	GERP 2.8, phastCons 1
Regional constraint	o/e 1.02	unconstrained · MANE · 26 kb · p 0.52 · regional, not allelic
Overall
CADD	15.29	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 0.462% Middle Eastern · 28/6,062 alleles

Filtering AF 0.328% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.283%

Overall 0.0181% 292/1,613,734 alleles · rare

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.462%	216
Ashkenazi Jewishnot grpmax-eligible	0.098%	1,020
South Asian	0.0275%	3,643
Admixed American	0.025%	3,999
Remaining individualsnot grpmax-eligible	0.0208%	4,807
European (non-Finnish)	0.0148%	6,743
African / African-American	0.008%	12,504
Finnishnot grpmax-eligible	0.00157%	63,768

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: CCPG1
Protein: p.Ala576Val
Coding: c.1727C>T
MANE Select: NM_001204450
dbSNP: rs201840284
Type: single nucleotide variant
Location: chr15:55360046 (GRCh38)
Gene constraint: LOEUF 0.777 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 62.96 · 1 PDB

Full CCPG1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

PIGB p.Ile537Met Pathogenic/Likely pathogenic ★★ ⚠ same type
PIGB p.Lys551Thr Benign ★★ same type
PIGB p.Ser509= Benign ★★ same type
CCPG1 p.Ala75Thr Uncertain significance ★ ⚠ same type
CCPG1 p.Arg179His Uncertain significance ★ ⚠ same type
CCPG1 p.Arg193Gln Uncertain significance ★ ⚠ same type
CCPG1 p.Arg193Trp Uncertain significance ★ ⚠ same type
CCPG1 p.Arg209His 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/ccpg1-p-ala576val (accessed [today's date]).

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