Is F11 p.Cys581Arg (c.1741T>C) pathogenic?

F11 p.Cys581Arg (c.1741T>C) is classified Uncertain significance in F11 (ClinVar, No assertion criteria, 1 submitter; last evaluated 2017-11-08). AlphaMissense: likely pathogenic (0.9806); Absent from gnomAD v4.1; Associated with congenital factor XI deficiency.

What condition is associated with F11 p.Cys581Arg (c.1741T>C)?

F11 p.Cys581Arg (c.1741T>C) is associated with congenital factor XI deficiency (ClinVar).

How common is F11 p.Cys581Arg (c.1741T>C) in the general population?

F11 p.Cys581Arg (c.1741T>C) is absent from gnomAD v4.1 (gnomAD).

How is Congenital factor XI deficiency inherited?

Typically Autosomal dominant, Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about F11 p.Cys581Arg (c.1741T>C)?

AlphaMissense predicts likely pathogenic (score 0.9806) — an in-silico prediction, not a clinical call.

F11 p.Cys581Arg

c.1741T>C · rs1554084164 · VCV554918

Uncertain significance No assertion criteria

Classification

Uncertain significance

ClinVar

Review

No assertion criteria ☆☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9806 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

congenital factor XI deficiency

Computational evidence

Protein change
AlphaMissense	0.9806	likely pathogenic · top 2% in F11
REVEL	0.945	strongly pathogenic-leaning
SaProt	LLR -14.41	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.8	GERP 2.4, phastCons 1
Overall
CADD	26.9	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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

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: F11
Protein: p.Cys581Arg
Coding: c.1741T>C
MANE Select: NM_001322131 · reported on NM_000128
dbSNP: rs1554084164
Type: single nucleotide variant
Location: chr4:186288477 (GRCh38)
Structure: AlphaFold pLDDT 68.98

Full F11 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

congenital factor XI deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Congenital factor XI deficiency (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive
Onset: All ages
Prevalence: 1-9 / 1 000 000 (Europe)

Similar variants

F11 c.1481-1G>T Likely pathogenic ★★ same condition
F11 c.1716+1G>A Pathogenic ★★ same condition
F11 c.325+1G>A Pathogenic ★★ same condition
F11 c.326-1G>A Pathogenic ★★ same condition
F11 c.755+2T>C Pathogenic ★★ same condition
F11 c.865+2T>C Likely pathogenic ★★ same condition
F11 p.Ala109Thr Pathogenic ★★ ⚠ same condition
F11 p.Ala430Thr Pathogenic/Likely pathogenic ★★ 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/f11-p-cys581arg (accessed [today's date]).

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