Is CHDH p.Ser431Arg (c.1293T>G) pathogenic?

CHDH p.Ser431Arg (c.1293T>G) is classified Uncertain significance in CHDH (ClinVar, Single submitter, 1 submitter; last evaluated 2024-09-27). AlphaMissense: likely pathogenic (0.9741); Absent from gnomAD v4.1.

How common is CHDH p.Ser431Arg (c.1293T>G) in the general population?

CHDH p.Ser431Arg (c.1293T>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CHDH p.Ser431Arg (c.1293T>G)?

AlphaMissense predicts likely pathogenic (score 0.9741) — an in-silico prediction, not a clinical call.

CHDH p.Ser431Arg

c.1293T>G · VCV3492140

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9741 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9741	likely pathogenic · top 4% in CHDH
REVEL	0.801	moderately pathogenic-leaning
SaProt	LLR -14.13	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.022	GERP -0.24, phastCons 0.021
Regional constraint	o/e 0.99	unconstrained · MANE · 6,228 bp · p 0.86 · regional, not allelic
Overall
CADD	22.2	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: CHDH
Protein: p.Ser431Arg
Coding: c.1293T>G
MANE Select: NM_018397
Type: single nucleotide variant
Location: chr3:53819011 (GRCh38)
Gene constraint: LOEUF 1.092 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 92.84

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

Similar variants

CHDH p.Pro396Leu Uncertain significance ★★ ⚠ same type
CHDH c.704-3C>T Benign ★★ same type
CHDH p.Gly235= Benign ★★ same type
CHDH p.Val45= Benign ★★ same type
CHDH p.Ala13Val Uncertain significance ★ ⚠ same type
CHDH p.Ala170Thr Uncertain significance ★ ⚠ same type
CHDH p.Ala177Thr Uncertain significance ★ ⚠ same type
CHDH p.Ala240Val 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/chdh-p-ser431arg (accessed [today's date]).

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