Is SCRIB p.Pro1304Leu (c.3911C>T) pathogenic?

SCRIB p.Pro1304Leu (c.3911C>T) is classified Uncertain significance in SCRIB (ClinVar, Single submitter, 1 submitter; last evaluated 2025-12-15). AlphaMissense: likely benign (0.0644); Ultra-rare (popmax 0.0214%, mid).

How common is SCRIB p.Pro1304Leu (c.3911C>T) in the general population?

SCRIB p.Pro1304Leu (c.3911C>T) is ultra-rare (popmax 0.0214%, mid) (gnomAD).

What do computational predictors say about SCRIB p.Pro1304Leu (c.3911C>T)?

AlphaMissense predicts likely benign (score 0.0644) — an in-silico prediction, not a clinical call.

SCRIB p.Pro1304Leu

c.3911C>T · VCV4834434

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0644 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0214%, mid)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0644	likely benign
REVEL	0.061	moderately benign-leaning
SaProt	LLR -7.58	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · G>T here scores Δ0.98 · evaluated, not missing
Constraint at this position
Conservation	phyloP 1.5	GERP -2.6, phastCons 0.95
Regional constraint	o/e 1.13	unconstrained · MANE · 20 kb · p 9.1e-08 · regional, not allelic
Overall
CADD	15.49	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 and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0214% Middle Eastern · 1/4,678 alleles

Filtering AF 0.00465% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00327%

Overall 0.00274% 40/1,461,856 alleles · ultra-rare exomes 32/1,309,658 · genomes 8/152,198 · joint denominator

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0214%	4,678
African / African-American	0.01%	9,982
European (non-Finnish)	0.00272%	36,804
Remaining individualsnot grpmax-eligible	0.00177%	56,538
South Asian	0.00139%	71,686

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.Pro1304Leu
Coding: c.3911C>T
MANE Select: NM_182706
Type: single nucleotide variant
Location: chr8:143793082 (GRCh38)
Gene constraint: LOEUF 0.684 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 52.33 · 42 PDB
Residue 1304: the 'disordered' region

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

Similar variants

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
SCRIB p.Pro1343= 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-pro1304leu (accessed [today's date]).

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