Is CNNM3 p.Arg32Pro (c.95G>C) pathogenic?

CNNM3 p.Arg32Pro (c.95G>C) is classified Uncertain significance in CNNM3 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-10-22). AlphaMissense: likely benign (0.1096); Very rare (popmax 0.00413%, amr).

How common is CNNM3 p.Arg32Pro (c.95G>C) in the general population?

CNNM3 p.Arg32Pro (c.95G>C) is very rare (popmax 0.00413%, amr) (gnomAD).

What do computational predictors say about CNNM3 p.Arg32Pro (c.95G>C)?

AlphaMissense predicts likely benign (score 0.1096) — an in-silico prediction, not a clinical call.

CNNM3 p.Arg32Pro

c.95G>C · rs1348867850 · VCV2224453

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1096 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00413%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1096	likely benign
REVEL	0.254	benign-leaning
SaProt	LLR -7.09	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 3.4	GERP -3.1, phastCons 1
Regional constraint	o/e 1.16	unconstrained · MANE · 849 bp · p 0.0017 · regional, not allelic
Overall
CADD	19.28	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 0.00413% Admixed American · 1/24,192 alleles

Filtering AF 0.000512% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000192%

Overall 0.00197% 3/152,006 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00413%	24,192
African / African-American	0.00309%	32,406

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: CNNM3
Protein: p.Arg32Pro
Coding: c.95G>C
MANE Select: NM_017623
dbSNP: rs1348867850
Type: single nucleotide variant
Location: chr2:96816372 (GRCh38)
Gene constraint: LOEUF 1.23 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 67.63 · 7 PDB

Full CNNM3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CNNM3 p.Ala221Gly Uncertain significance ★★ ⚠ same type
CNNM3 p.Ala128Val Uncertain significance ★ ⚠ same type
CNNM3 p.Ala142Thr Uncertain significance ★ ⚠ same type
CNNM3 p.Ala146Val Uncertain significance ★ ⚠ same type
CNNM3 p.Ala158Thr Uncertain significance ★ ⚠ same type
CNNM3 p.Ala162Glu Uncertain significance ★ ⚠ same type
CNNM3 p.Ala176Thr Uncertain significance ★ ⚠ same type
CNNM3 p.Ala191Thr 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/cnnm3-p-arg32pro (accessed [today's date]).

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