Is CDH23 p.Ser170= (c.510C>T) pathogenic?

CDH23 p.Ser170= (c.510C>T) is classified Conflicting classifications of pathogenicity in CDH23 (ClinVar, Conflicting submitters, 11 submitters; last evaluated 2026-02-02). Low-frequency (popmax 3.81%, eas); Associated with Usher syndrome type 1D.

What condition is associated with CDH23 p.Ser170= (c.510C>T)?

CDH23 p.Ser170= (c.510C>T) is associated with Usher syndrome type 1D, Usher syndrome type 1, autosomal recessive nonsyndromic hearing loss 12 (ClinVar).

How common is CDH23 p.Ser170= (c.510C>T) in the general population?

CDH23 p.Ser170= (c.510C>T) is low-frequency (popmax 3.81%, eas) (gnomAD).

CDH23 p.Ser170=

c.510C>T · rs143341423 · VCV45966

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 11 submitters

gnomAD v4.1

Rare

low-frequency (popmax 3.81%, eas)

Conditions

Usher syndrome type 1D

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · C>A here scores Δ0.34 · evaluated, not missing
Constraint at this position
Conservation	phyloP 1.4	GERP -0.58, phastCons 1
Overall
CADD	11.68	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 3.81% East Asian · 1,711/44,876 alleles

Filtering AF 3.66% ClinGen BA1/BS1 input FAF95, joint · FAF99 3.6%

Overall 0.15% 2,421/1,613,992 alleles · low-frequency

Ancestry group	Frequency	1 in
East Asiangrpmax	3.81%	26
Admixed American	0.275%	364
Finnishnot grpmax-eligible	0.219%	457
Remaining individualsnot grpmax-eligible	0.187%	534
Middle Eastern	0.099%	1,010
South Asian	0.0659%	1,518
European (non-Finnish)	0.0181%	5,539
African / African-American	0.012%	8,340

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.Ser170=
Coding: c.510C>T
MANE Select: NM_022124
dbSNP: rs143341423
Type: single nucleotide variant
Location: chr10:71566822 (GRCh38)
Gene constraint: LOEUF 0.685 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Residue 170: the cadherin 2 domain

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

Disease context

Usher syndrome type 1D — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: Usher syndrome type 1 autosomal recessive nonsyndromic hearing loss 12

Similar variants

CDH23 p.Ser170Cys Conflicting classifications of pathogenicity ★ 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-ser170 (accessed [today's date]).

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