Is SRCAP p.Gln939Glu (c.2815C>G) pathogenic?

SRCAP p.Gln939Glu (c.2815C>G) is classified Uncertain significance in SRCAP (ClinVar, Single submitter, 1 submitter; last evaluated 2025-03-07). AlphaMissense: likely benign (0.1256); Absent from gnomAD v4.1.

How common is SRCAP p.Gln939Glu (c.2815C>G) in the general population?

SRCAP p.Gln939Glu (c.2815C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about SRCAP p.Gln939Glu (c.2815C>G)?

AlphaMissense predicts likely benign (score 0.1256) — an in-silico prediction, not a clinical call.

SRCAP p.Gln939Glu

c.2815C>G · VCV4083174

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1256 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

AlphaMissense, REVEL · SaProt no call

Computational evidence

Protein change
AlphaMissense	0.1256	likely benign
REVEL	0.194	benign-leaning
SaProt	—	not scored · why
⇒ AlphaMissense and REVEL both call this tolerated; SaProt makes no call.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 5.9	GERP 1.8, phastCons 1
Regional constraint	o/e 0.69	unconstrained · MANE · 4,608 bp · p 6.7e-06 · regional, not allelic
Overall
CADD	20.2	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; REVEL 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: SRCAP
Protein: p.Gln939Glu
Coding: c.2815C>G
MANE Select: NM_006662
Type: single nucleotide variant
Location: chr16:30716477 (GRCh38)
Gene constraint: LOEUF 0.223 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 939: an α-helix; a UniProt-annotated variant site (in dehmba)

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

Similar variants

SRCAP p.Gln939Arg Uncertain significance ★ same residue
SRCAP p.Arg2329Ter Pathogenic/Likely pathogenic ★★ same type
SRCAP p.Arg2435Ter Pathogenic/Likely pathogenic ★★ same type
SRCAP p.Arg2444Ter Pathogenic ★★ same type
SRCAP p.Arg2718Ter Pathogenic/Likely pathogenic ★★ same type
SRCAP p.Arg2748Ter Pathogenic ★★ same type
SRCAP p.Gln2407Ter Pathogenic ★★ same type
SRCAP p.Gln2419Ter 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/srcap-p-gln939glu (accessed [today's date]).

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