Is CFB p.Gln616Arg (c.1847A>G) pathogenic?

CFB p.Gln616Arg (c.1847A>G) is classified Uncertain significance in CFB (ClinVar, Single submitter, 1 submitter; last evaluated 2023-08-28). AlphaMissense: likely benign (0.0691); Absent from gnomAD v4.1.

How common is CFB p.Gln616Arg (c.1847A>G) in the general population?

CFB p.Gln616Arg (c.1847A>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CFB p.Gln616Arg (c.1847A>G)?

AlphaMissense predicts likely benign (score 0.0691) — an in-silico prediction, not a clinical call.

CFB p.Gln616Arg

c.1847A>G · rs776661046 · VCV2877975

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0691 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0691	likely benign
REVEL	0.055	moderately benign-leaning
SaProt	LLR -8.33	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.65	GERP 0.79, phastCons 0.63
Overall
CADD	15.78	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

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.Gln616Arg
Coding: c.1847A>G
MANE Select: NM_001710
dbSNP: rs776661046
Type: single nucleotide variant
Location: chr6:31950936 (GRCh38)
Gene constraint: LOEUF 0.719 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 86.54 · 28 PDB
Residue 616: an α-helix; the peptidase s1 domain

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

Similar variants

CFB p.Gln616His Uncertain significance ★ ⚠ same residue
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

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-gln616arg (accessed [today's date]).

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