Is COCH p.Ile65Val (c.193A>G) pathogenic?

COCH p.Ile65Val (c.193A>G) is classified Uncertain significance in COCH (ClinVar, Multiple submitters, 3 submitters; last evaluated 2023-05-01). AlphaMissense: likely benign (0.063); Very rare (popmax 0.00666%, afr).

How common is COCH p.Ile65Val (c.193A>G) in the general population?

COCH p.Ile65Val (c.193A>G) is very rare (popmax 0.00666%, afr) (gnomAD).

What do computational predictors say about COCH p.Ile65Val (c.193A>G)?

AlphaMissense predicts likely benign (score 0.063) — an in-silico prediction, not a clinical call.

COCH p.Ile65Val

c.193A>G · rs148102471 · VCV2440181

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

likely benign

0.063 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00666%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.063	likely benign
REVEL	0.207	benign-leaning
SaProt	LLR -5.23	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 1.7	GERP 0.61, phastCons 1
Regional constraint	o/e 0.90	unconstrained · MANE · 15 kb · p 0.0071 · regional, not allelic
Overall
CADD	16.04	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 0.00666% African / African-American · 5/75,068 alleles

Filtering AF 0.00255% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00161%

Overall 0.000434% 7/1,614,232 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00666%	15,014
Remaining individualsnot grpmax-eligible	0.0016%	62,508
European (non-Finnish)	8.47e-05%	1,180,038

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: COCH
Protein: p.Ile65Val
Coding: c.193A>G
MANE Select: NM_004086
dbSNP: rs148102471
Type: single nucleotide variant
Location: chr14:30877682 (GRCh38)
Gene constraint: LOEUF 0.896 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 85.93 · 1 PDB
Residue 65: a disulfide bond; the lccl domain; a β-strand

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

Similar variants

COCH p.Gly87Glu Likely pathogenic ★★★ same type
COCH p.Pro51Ser Pathogenic ★★★ same type
COCH p.Ala119Thr Uncertain significance ★★★ ⚠ same type
COCH c.629+5C>T Benign ★★★ same type
COCH p.Asp281Asn Benign ★★★ same type
COCH p.Pro143= Benign ★★★ same type
COCH c.1477+1G>C Likely pathogenic ★★ same type
COCH p.Arg180Ter Pathogenic/Likely pathogenic ★★ 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/coch-p-ile65val (accessed [today's date]).

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