Is DACT1 p.Gln752Arg (c.2255A>G) pathogenic?

DACT1 p.Gln752Arg (c.2255A>G) is classified Uncertain significance in DACT1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-15). AlphaMissense: ambiguous (0.3811); Very rare (popmax 0.000254%, nfe).

How common is DACT1 p.Gln752Arg (c.2255A>G) in the general population?

DACT1 p.Gln752Arg (c.2255A>G) is very rare (popmax 0.000254%, nfe) (gnomAD).

What do computational predictors say about DACT1 p.Gln752Arg (c.2255A>G)?

AlphaMissense predicts ambiguous (score 0.3811) — an in-silico prediction, not a clinical call.

DACT1 p.Gln752Arg

c.2255A>G · VCV4237430

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.3811 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000254%, nfe)

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense no call

Computational evidence

Protein change
AlphaMissense	0.3811	ambiguous
REVEL	0.099	moderately benign-leaning
SaProt	LLR -6.12	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 2.8, phastCons 1
Regional constraint	o/e 1.10	unconstrained · MANE · 8,733 bp · p 0.0021 · regional, not allelic
Overall
CADD	22.4	PHRED · no single calibrated threshold — expert panels disagree

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

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM Q789R vs ClinVar Q752R) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000254% European (non-Finnish) · 3/1,180,040 alleles

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

Overall 0.000186% 3/1,614,080 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: DACT1
Protein: p.Gln752Arg
Coding: c.2255A>G
MANE Select: NM_001079520
Type: single nucleotide variant
Location: chr14:58646989 (GRCh38)
Gene constraint: LOEUF 0.703 · pLI 0.17 (gnomAD)
Structure: AlphaFold pLDDT 50.95
Residue 752: a UniProt-annotated variant site (in tbs2; the mutant protein is stable and expressed)

Full DACT1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

DACT1 p.Glu451Asp Uncertain significance ★★ ⚠ same type
DACT1 c.635-121T>C Likely benign ★★ same type
DACT1 p.Ala427Val Benign ★★ same type
DACT1 p.Ala500= Benign ★★ same type
DACT1 p.Asp409Asn Benign ★★ same type
DACT1 p.Glu257Lys Benign/Likely benign ★★ same type
DACT1 p.Glu49= Likely benign ★★ same type
DACT1 p.Gly660Ser Benign ★★ 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/dact1-p-gln752arg (accessed [today's date]).

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