Is RECQL4 p.Arg647Pro (c.1940G>C) pathogenic?

RECQL4 p.Arg647Pro (c.1940G>C) is classified Uncertain significance in RECQL4 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-02-24). AlphaMissense: likely benign (0.1418); Absent from gnomAD v4.1; Associated with Baller-Gerold syndrome.

What condition is associated with RECQL4 p.Arg647Pro (c.1940G>C)?

RECQL4 p.Arg647Pro (c.1940G>C) is associated with Baller-Gerold syndrome (ClinVar).

How common is RECQL4 p.Arg647Pro (c.1940G>C) in the general population?

RECQL4 p.Arg647Pro (c.1940G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about RECQL4 p.Arg647Pro (c.1940G>C)?

AlphaMissense predicts likely benign (score 0.1418) — an in-silico prediction, not a clinical call.

RECQL4 p.Arg647Pro

c.1940G>C · rs372664774 · VCV2840342

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1418 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

AlphaMissense, SaProt

Conditions

Baller-Gerold syndrome

Computational evidence

Protein change
AlphaMissense	0.1418	likely benign
SaProt	LLR -7.07	tolerated
⇒ AlphaMissense and SaProt both call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.2	GERP 0.68, phastCons 0.91
Regional constraint	o/e 1.39	unconstrained · MANE · 6,350 bp · p 1.8e-56 · regional, not allelic
Overall
CADD	21.3	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; SaProt is an independent agreement signal.

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: RECQL4
Protein: p.Arg647Pro
Coding: c.1940G>C
MANE Select: NM_004260
dbSNP: rs372664774
Type: single nucleotide variant
Location: chr8:144514046 (GRCh38)
Gene constraint: LOEUF 1.519 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 68.32 · 2 PDB
Residue 647: the helicase atp-binding domain; an α-helix

Full RECQL4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Baller-Gerold syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

RECQL4 p.Arg647Cys Uncertain significance ★★ ⚠ same residue
RECQL4 p.Arg647Gly Uncertain significance ★★ ⚠ same residue
RECQL4 p.Arg647His Uncertain significance ★★ ⚠ same residue
RECQL4 p.Arg647Leu Uncertain significance ★★ ⚠ same residue
RECQL4 p.Arg647= Likely benign ★★ same residue
RECQL4 p.Arg647Ser Likely benign ★ same residue
RECQL4 c.1132-1G>A Likely pathogenic ★★ same condition
RECQL4 c.1259-1G>A Pathogenic/Likely pathogenic ★★ 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/recql4-p-arg647pro (accessed [today's date]).

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