Is CFB p.Gly194Arg (c.580G>C) pathogenic?

CFB p.Gly194Arg (c.580G>C) is classified Uncertain significance in CFB (ClinVar, Single submitter, 1 submitter; last evaluated 2022-08-09). AlphaMissense: likely benign (0.2505); Absent from gnomAD v4.1.

How common is CFB p.Gly194Arg (c.580G>C) in the general population?

CFB p.Gly194Arg (c.580G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CFB p.Gly194Arg (c.580G>C)?

AlphaMissense predicts likely benign (score 0.2505) — an in-silico prediction, not a clinical call.

CFB p.Gly194Arg

c.580G>C · rs1258031617 · VCV1715799

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2505 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.2505	likely benign
REVEL	0.679	pathogenic-leaning
SaProt	LLR -9.51	tolerated
⇒ REVEL calls this damaging; AlphaMissense and SaProt do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 8.7	GERP -0.46, phastCons 1
Overall
CADD	26.0	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

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: CFB
Protein: p.Gly194Arg
Coding: c.580G>C
MANE Select: NM_001710
dbSNP: rs1258031617
Type: single nucleotide variant
Location: chr6:31947443 (GRCh38)
Gene constraint: LOEUF 0.719 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 86.54 · 28 PDB
Residue 194: a disulfide bond; the sushi 3 domain

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

Similar variants

CFB c.2140-1G>C Uncertain significance ★★ same type
CFB c.-3G>A Uncertain significance ★★ same type
CFB p.Ala162Val Uncertain significance ★★ ⚠ same type
CFB p.Ala289Val Uncertain significance ★★ ⚠ same type
CFB p.Ala567Gly Uncertain significance ★★ ⚠ same type
CFB p.Arg117Trp Uncertain significance ★★ ⚠ same type
CFB p.Arg138Gln Uncertain significance ★★ ⚠ same type
CFB p.Arg138Trp Uncertain significance ★★ ⚠ 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/cfb-p-gly194arg (accessed [today's date]).

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