Is CDH23 p.Arg536Trp (c.1606C>T) pathogenic?

CDH23 p.Arg536Trp (c.1606C>T) is classified Uncertain significance in CDH23 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2026-01-05). AlphaMissense: likely benign (0.2115); Very rare (popmax 0.00111%, sas).

How common is CDH23 p.Arg536Trp (c.1606C>T) in the general population?

CDH23 p.Arg536Trp (c.1606C>T) is very rare (popmax 0.00111%, sas) (gnomAD).

What do computational predictors say about CDH23 p.Arg536Trp (c.1606C>T)?

AlphaMissense predicts likely benign (score 0.2115) — an in-silico prediction, not a clinical call.

CDH23 p.Arg536Trp

c.1606C>T · rs564161575 · VCV916216

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

likely benign

0.2115 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00111%, sas)

Computational evidence

Protein change
AlphaMissense	0.2115	likely benign
REVEL	0.636	indeterminate
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.1	GERP 1.4, phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 359 kb · p 0.017 · regional, not allelic
Overall
CADD	26.1	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00111% South Asian · 1/90,294 alleles

Filtering AF 6.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.9e-05%

Overall 0.000372% 6/1,611,878 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0032%	31,221
South Asiangrpmax	0.00111%	90,294
European (non-Finnish)	0.000254%	393,091

Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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.Arg536Trp
Coding: c.1606C>T
MANE Select: NM_022124
dbSNP: rs564161575
Type: single nucleotide variant
Location: chr10:71677547 (GRCh38)
Gene constraint: LOEUF 0.685 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Residue 536: the cadherin 5 domain

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

Similar variants

CDH23 p.Arg536Gln Uncertain significance ★★ ⚠ same residue
CDH23 p.Arg536= Uncertain significance ★ same residue
CDH23 p.Arg2029Trp Pathogenic ★★★ ⚠ same type
CDH23 p.Asp127Gly Likely pathogenic ★★★ same type
CDH23 p.Glu956Lys Pathogenic ★★★ same type
CDH23 p.Pro240Leu Pathogenic ★★★ same type
CDH23 c.1515-12G>A Uncertain significance ★★★ same type
CDH23 p.Ala3190Val 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/cdh23-p-arg536trp (accessed [today's date]).

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