Is BBOF1 p.Arg194Gln (c.581G>A) pathogenic?

BBOF1 p.Arg194Gln (c.581G>A) is classified Uncertain significance in BBOF1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-10-07). AlphaMissense: likely benign (0.1518); Very rare (popmax 0.00855%, amr).

How common is BBOF1 p.Arg194Gln (c.581G>A) in the general population?

BBOF1 p.Arg194Gln (c.581G>A) is very rare (popmax 0.00855%, amr) (gnomAD).

What do computational predictors say about BBOF1 p.Arg194Gln (c.581G>A)?

AlphaMissense predicts likely benign (score 0.1518) — an in-silico prediction, not a clinical call.

BBOF1 p.Arg194Gln

c.581G>A · rs756352111 · VCV2456411

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1518 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00855%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1518	likely benign
REVEL	0.213	benign-leaning
SaProt	LLR -6.73	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 9.8	GERP 1.7, phastCons 1
Regional constraint	o/e 0.89	unconstrained · MANE · 45 kb · p 0.007 · regional, not allelic
Overall
CADD	26.8	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 0.00855% Admixed American · 5/58,508 alleles

Filtering AF 0.00332% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00211%

Overall 0.00112% 18/1,605,810 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00855%	11,702
South Asian	0.00224%	44,646
Finnishnot grpmax-eligible	0.00157%	63,656
African / African-American	0.00134%	74,740
European (non-Finnish)	0.000765%	130,705

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: BBOF1
Protein: p.Arg194Gln
Coding: c.581G>A
MANE Select: NM_025057
dbSNP: rs756352111
Type: single nucleotide variant
Location: chr14:74046064 (GRCh38)
Gene constraint: LOEUF 1.032 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 81.40

Full BBOF1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ALDH6A1 c.112-11G>T Benign ★★ same type
ALDH6A1 c.731-12T>C Benign/Likely benign ★★ same type
ALDH6A1 c.*494A>T Benign ★★ same type
ALDH6A1 p.Asp137Ala Uncertain significance ★ same type
ALDH6A1 p.Met198Leu Uncertain significance ★ ⚠ same type
ALDH6A1 p.Thr96Ile Uncertain significance ★ ⚠ same type
ALDH6A1 p.Val49Ile Conflicting classifications of pathogenicity ★ ⚠ same type
BBOF1 p.Ala317Thr 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/bbof1-p-arg194gln (accessed [today's date]).

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