Is SCRIB p.Gln393Arg (c.1178A>G) pathogenic?

SCRIB p.Gln393Arg (c.1178A>G) is classified Uncertain significance in SCRIB (ClinVar, Single submitter, 1 submitter; last evaluated 2024-08-21). AlphaMissense: ambiguous (0.3716); Very rare (popmax 0.00267%, afr).

How common is SCRIB p.Gln393Arg (c.1178A>G) in the general population?

SCRIB p.Gln393Arg (c.1178A>G) is very rare (popmax 0.00267%, afr) (gnomAD).

What do computational predictors say about SCRIB p.Gln393Arg (c.1178A>G)?

AlphaMissense predicts ambiguous (score 0.3716) — an in-silico prediction, not a clinical call.

SCRIB p.Gln393Arg

c.1178A>G · VCV3438454

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.3716 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00267%, afr)

Computational evidence

Protein change
AlphaMissense	0.3716	ambiguous
REVEL	0.509	indeterminate
SaProt	LLR -10.55	damaging
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 5	GERP 1.1, phastCons 1
Regional constraint	o/e 0.87	unconstrained · MANE · 4,447 bp · p 0.0026 · regional, not allelic
Overall
CADD	26.8	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00267% African / African-American · 2/74,896 alleles

Filtering AF 0.000443% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000166%

Overall 0.000124% 2/1,611,294 alleles · very rare exomes 0/1,459,122 · genomes 2/152,172 · joint denominator

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: SCRIB
Protein: p.Gln393Arg
Coding: c.1178A>G
MANE Select: NM_182706
Type: single nucleotide variant
Location: chr8:143811001 (GRCh38)
Gene constraint: LOEUF 0.684 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 52.33 · 42 PDB
Residue 393: the 'sufficient for targeting to adherens junction and to inhibit cell proliferation' region

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

Similar variants

SCRIB p.Gln393Ter Likely pathogenic ★ same residue
SCRIB c.3120+10C>G Benign/Likely benign ★★ same type
SCRIB c.504-9C>T Benign ★★ same type
SCRIB p.Ala1488= Likely benign ★★ same type
SCRIB p.Arg492= Benign ★★ same type
SCRIB p.Asn647= Benign/Likely benign ★★ same type
SCRIB p.Leu254= Benign ★★ same type
SCRIB p.Phe571= 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/scrib-p-gln393arg (accessed [today's date]).

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