Is CDH23 p.Arg1840Gln (c.5519G>A) pathogenic?

CDH23 p.Arg1840Gln (c.5519G>A) is classified Uncertain significance in CDH23 (ClinVar, Multiple submitters, 5 submitters; last evaluated 2025-12-02). AlphaMissense: likely benign (0.0727); Very rare (popmax 0.00667%, amr); Associated with autosomal recessive nonsyndromic hearing loss 12.

What condition is associated with CDH23 p.Arg1840Gln (c.5519G>A)?

CDH23 p.Arg1840Gln (c.5519G>A) is associated with autosomal recessive nonsyndromic hearing loss 12, Usher syndrome type 1, Usher syndrome type 1D (ClinVar).

How common is CDH23 p.Arg1840Gln (c.5519G>A) in the general population?

CDH23 p.Arg1840Gln (c.5519G>A) is very rare (popmax 0.00667%, amr) (gnomAD).

What do computational predictors say about CDH23 p.Arg1840Gln (c.5519G>A)?

AlphaMissense predicts likely benign (score 0.0727) — an in-silico prediction, not a clinical call.

CDH23 p.Arg1840Gln

c.5519G>A · rs375083901 · VCV228497

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 5 submitters

AlphaMissense

likely benign

0.0727 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00667%, amr)

Missense predictors

0/2 damaging

AlphaMissense, REVEL

Conditions

autosomal recessive nonsyndromic hearing loss 12

Computational evidence

Protein change
AlphaMissense	0.0727	likely benign
REVEL	0.101	moderately benign-leaning
⇒ AlphaMissense and REVEL both call this tolerated.
Splicing
SpliceAI	Δ0.38	acceptor gain · deltas
Constraint at this position
Conservation	phyloP 3.5	GERP 0.58, phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 359 kb · p 0.017 · regional, not allelic
Overall
CADD	28.9	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 0.00667% Admixed American · 4/60,000 alleles

Filtering AF 0.00226% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00135%

Overall 0.00174% 28/1,613,750 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00667%	15,000
African / African-American	0.00401%	24,966
Remaining individualsnot grpmax-eligible	0.0032%	31,233
European (non-Finnish)	0.00153%	65,545
South Asian	0.0011%	91,078

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: CDH23
Protein: p.Arg1840Gln
Coding: c.5519G>A
MANE Select: NM_022124
dbSNP: rs375083901
Type: single nucleotide variant
Location: chr10:71784907 (GRCh38)
Gene constraint: LOEUF 0.685 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Residue 1840: the cadherin 17 domain

Full CDH23 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

autosomal recessive nonsyndromic hearing loss 12 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: Usher syndrome type 1 Usher syndrome type 1D

Similar variants

CDH23 p.Arg1840Trp Uncertain significance ★★ same residue
CDH23 p.Arg2029Trp Pathogenic ★★★ ⚠ same condition
CDH23 p.Asp127Gly Likely pathogenic ★★★ same condition
CDH23 p.Glu956Lys Pathogenic ★★★ same condition
CDH23 p.Pro240Leu Pathogenic ★★★ same condition
CDH23 c.1515-12G>A Uncertain significance ★★★ same condition
CDH23 p.Ala3190Val Uncertain significance ★★★ ⚠ same condition
CDH23 p.Arg301Gln Uncertain significance ★★★ same condition

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/cdh23-p-arg1840gln (accessed [today's date]).

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