Is SRCAP p.Arg3061Cys (c.9181C>T) pathogenic?

SRCAP p.Arg3061Cys (c.9181C>T) is classified Uncertain significance in SRCAP (ClinVar, Single submitter, 1 submitter; last evaluated 2025-10-03). AlphaMissense: ambiguous (0.4374); Very rare (popmax 0.005%, amr); Associated with Inborn genetic diseases.

What condition is associated with SRCAP p.Arg3061Cys (c.9181C>T)?

SRCAP p.Arg3061Cys (c.9181C>T) is associated with Inborn genetic diseases (ClinVar).

How common is SRCAP p.Arg3061Cys (c.9181C>T) in the general population?

SRCAP p.Arg3061Cys (c.9181C>T) is very rare (popmax 0.005%, amr) (gnomAD).

What do computational predictors say about SRCAP p.Arg3061Cys (c.9181C>T)?

AlphaMissense predicts ambiguous (score 0.4374) — an in-silico prediction, not a clinical call.

SRCAP p.Arg3061Cys

c.9181C>T · VCV4632204

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4374 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.005%, amr)

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.4374	ambiguous
REVEL	0.496	indeterminate
SaProt	—	not scored · why
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.7	GERP 2.5, phastCons 1
Regional constraint	o/e 1.06	unconstrained · MANE · 2,598 bp · p 0.058 · regional, not allelic
Overall
CADD	29.6	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL is an independent agreement signal.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.005% Admixed American · 3/60,024 alleles

Filtering AF 0.00133% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000668%

Overall 0.000868% 14/1,613,554 alleles · very rare exomes 14/1,461,232 · genomes 0/152,322 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.005%	20,008
East Asian	0.00223%	44,880
South Asian	0.0022%	45,543
Remaining individualsnot grpmax-eligible	0.0016%	62,504
African / African-American	0.00133%	75,052
European (non-Finnish)	0.000508%	196,670

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: SRCAP
Protein: p.Arg3061Cys
Coding: c.9181C>T
MANE Select: NM_006662
Type: single nucleotide variant
Location: chr16:30739221 (GRCh38)
Gene constraint: LOEUF 0.223 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 3061: the 'disordered' region; a UniProt-annotated variant site (in dehmba); a UniProt-annotated variant site (in flhs)

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

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

SRCAP p.Gln2407Ter Pathogenic ★★ same condition
SRCAP p.Ala1152Val Uncertain significance ★★ ⚠ same condition
SRCAP p.Ala1161Thr Uncertain significance ★★ ⚠ same condition
SRCAP p.Ala1570Thr Uncertain significance ★★ ⚠ same condition
SRCAP p.Ala1584Gly Uncertain significance ★★ same condition
SRCAP p.Ala1985Thr Uncertain significance ★★ same condition
SRCAP p.Ala2699Val Uncertain significance ★★ ⚠ same condition
SRCAP p.Ala2945Val Uncertain significance ★★ 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/srcap-p-arg3061cys (accessed [today's date]).

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