Is SYNCRIP p.Pro441Leu (c.1322C>T) pathogenic?

SYNCRIP p.Pro441Leu (c.1322C>T) is classified Uncertain significance in SYNCRIP (ClinVar, Single submitter, 1 submitter; last evaluated 2025-12-10). AlphaMissense: likely benign (0.1175); Very rare (popmax 0.00954%, sas); Associated with Inborn genetic diseases.

What condition is associated with SYNCRIP p.Pro441Leu (c.1322C>T)?

SYNCRIP p.Pro441Leu (c.1322C>T) is associated with Inborn genetic diseases (ClinVar).

How common is SYNCRIP p.Pro441Leu (c.1322C>T) in the general population?

SYNCRIP p.Pro441Leu (c.1322C>T) is very rare (popmax 0.00954%, sas) (gnomAD).

What do computational predictors say about SYNCRIP p.Pro441Leu (c.1322C>T)?

AlphaMissense predicts likely benign (score 0.1175) — an in-silico prediction, not a clinical call.

SYNCRIP p.Pro441Leu

c.1322C>T · VCV4632503

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1175 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00954%, sas)

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1175	likely benign
REVEL	0.401	indeterminate
SaProt	LLR -10.04	damaging
⇒ SaProt calls this damaging; AlphaMissense does not; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 2.4, phastCons 1
Regional constraint	o/e 0.60	unconstrained · MANE · 3,739 bp · p 1.3e-05 · regional, not allelic
Overall
CADD	33.0	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 0.00954% South Asian · 8/83,886 alleles

Filtering AF 0.00469% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00345%

Overall 0.00358% 56/1,562,694 alleles · very rare exomes 47/1,410,606 · genomes 9/152,088 · joint denominator

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00954%	10,486
European (non-Finnish)	0.004%	24,997
Remaining individualsnot grpmax-eligible	0.00333%	30,071

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: SYNCRIP
Protein: p.Pro441Leu
Coding: c.1322C>T
MANE Select: NM_006372
Type: single nucleotide variant
Location: chr6:85615306 (GRCh38)
Gene constraint: LOEUF 0.249 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 70.83 · 4 PDB
Residue 441: the 'interaction with apobec1' region

Full SYNCRIP 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

SYNCRIP p.Ala216Thr Uncertain significance ★★ same condition
SYNCRIP p.Asn243Ser Uncertain significance ★★ ⚠ same condition
SYNCRIP p.Pro440Leu Uncertain significance ★★ ⚠ same condition
SYNCRIP p.Pro508Leu Uncertain significance ★★ ⚠ same condition
SYNCRIP p.Ser116Gly Uncertain significance ★★ ⚠ same condition
SYNCRIP p.Glu612Val Likely benign ★★ ⚠ same condition
SYNCRIP p.Ala346Thr Uncertain significance ★ ⚠ same condition
SYNCRIP p.Ala357Val 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/syncrip-p-pro441leu (accessed [today's date]).

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