Is CSMD3 p.Ile1626Val (c.4876A>G) pathogenic?

CSMD3 p.Ile1626Val (c.4876A>G) is classified Uncertain significance in CSMD3 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-10-30). AlphaMissense: likely benign (0.1187); Very rare (popmax 0.00017%, nfe).

How common is CSMD3 p.Ile1626Val (c.4876A>G) in the general population?

CSMD3 p.Ile1626Val (c.4876A>G) is very rare (popmax 0.00017%, nfe) (gnomAD).

What do computational predictors say about CSMD3 p.Ile1626Val (c.4876A>G)?

AlphaMissense predicts likely benign (score 0.1187) — an in-silico prediction, not a clinical call.

CSMD3 p.Ile1626Val

c.4876A>G · VCV4657171

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1187 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00017%, nfe)

Missense predictors

0/2 damaging

AlphaMissense, REVEL

Computational evidence

Protein change
AlphaMissense	0.1187	likely benign
REVEL	0.069	moderately benign-leaning
⇒ AlphaMissense and REVEL both call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.9	GERP 2.7, phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 442 kb · p 0.031 · regional, not allelic
Overall
CADD	22.3	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 0.00017% European (non-Finnish) · 2/1,179,672 alleles

Filtering AF 2.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.1e-05%

Overall 0.000124% 2/1,613,604 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: CSMD3
Protein: p.Ile1626Val
Coding: c.4876A>G
MANE Select: NM_198123
Type: single nucleotide variant
Location: chr8:112506710 (GRCh38)
Gene constraint: LOEUF 0.464 · pLI 0.97 (gnomAD)
Residue 1626: the cub 9 domain

Full CSMD3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CSMD3 p.Glu2761Val Uncertain significance ★★ same type
CSMD3 p.Leu3027Phe Uncertain significance ★★ same type
CSMD3 c.4896-3C>T Benign ★★ same type
CSMD3 p.Arg1020His Benign ★★ same type
CSMD3 p.Arg1228Gln Likely benign ★★ same type
CSMD3 p.Arg687= Benign/Likely benign ★★ same type
CSMD3 p.Asp1025= Benign ★★ same type
CSMD3 p.Asp1473= Benign ★★ 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/csmd3-p-ile1626val (accessed [today's date]).

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