Is CHD3 p.Arg1105His (c.3314G>A) pathogenic?

CHD3 p.Arg1105His (c.3314G>A) is classified Uncertain significance in CHD3 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2023-12-21). AlphaMissense: likely pathogenic (0.9808); Very rare (popmax 8.47e-05%, nfe).

How common is CHD3 p.Arg1105His (c.3314G>A) in the general population?

CHD3 p.Arg1105His (c.3314G>A) is very rare (popmax 8.47e-05%, nfe) (gnomAD).

What do computational predictors say about CHD3 p.Arg1105His (c.3314G>A)?

AlphaMissense predicts likely pathogenic (score 0.9808) — an in-silico prediction, not a clinical call.

CHD3 p.Arg1105His

c.3314G>A · rs2544992414 · VCV2507115

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.9808 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.47e-05%, nfe)

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9808	likely pathogenic
REVEL	0.83	moderately pathogenic-leaning
SaProt	LLR -13.93	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 12	GERP 1.9, phastCons 1
Regional constraint	o/e 0.40	unconstrained · MANE · 305 bp · p 5.1e-05 · regional, not allelic
Overall
CADD	33.0	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

Grpmax group 8.47e-05% European (non-Finnish) · 1/1,179,944 alleles

Overall 6.84e-05% 1/1,461,788 alleles · very rare

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: CHD3
Protein: p.Arg1105His
Coding: c.3314G>A
MANE Select: NM_001005273
dbSNP: rs2544992414
Type: single nucleotide variant
Location: chr17:7902671 (GRCh38)
Gene constraint: LOEUF 0.257 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 63.21
Residue 1105: the helicase c-terminal domain; a UniProt-annotated variant site (in snibcps)

Full CHD3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CHD3 p.Arg1105Cys Uncertain significance ★ ⚠ same residue
CHD3 c.4073-2A>C Likely pathogenic ★★ same type
CHD3 p.Arg103Ter Pathogenic ★★ same type
CHD3 p.Arg1078Gln Pathogenic/Likely pathogenic ★★ same type
CHD3 p.Arg1121Pro Pathogenic/Likely pathogenic ★★ same type
CHD3 p.Arg1169Gln Pathogenic/Likely pathogenic ★★ same type
CHD3 p.Arg1169Pro Pathogenic/Likely pathogenic ★★ same type
CHD3 p.Arg1169Trp 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/chd3-p-arg1105his (accessed [today's date]).

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