Is BUB3 p.Ala187= (c.561G>A) pathogenic?

BUB3 p.Ala187= (c.561G>A) is classified Likely benign in BUB3 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-11-23). Very rare (popmax 0.0018%, amr).

How common is BUB3 p.Ala187= (c.561G>A) in the general population?

BUB3 p.Ala187= (c.561G>A) is very rare (popmax 0.0018%, amr) (gnomAD).

BUB3 p.Ala187=

c.561G>A · rs765846209 · VCV2496859

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.0018%, amr)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -15	GERP -5.2
Overall
CADD	0.197	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0018% Admixed American · 1/55,594 alleles

Filtering AF 0.000766% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000608%

Overall 0.001% 16/1,598,486 alleles · very rare exomes 15/1,446,436 · genomes 1/152,050 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.0018%	55,594
European (non-Finnish)	0.00128%	78,339

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: BUB3
Protein: p.Ala187=
Coding: c.561G>A
MANE Select: NM_004725
dbSNP: rs765846209
Type: single nucleotide variant
Location: chr10:123160550 (GRCh38)
Gene constraint: LOEUF 0.77 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 96.10

Full BUB3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BUB3 p.Ala187Gly Uncertain significance ★ ⚠ same residue
BUB3 p.Arg314= Likely benign ★★ same type
BUB3 p.Ser197= Likely benign ★★ same type
BUB3 p.Ser198= Likely benign ★★ same type
BUB3 p.Ala131Val Uncertain significance ★ ⚠ same type
BUB3 p.Ala155Val Uncertain significance ★ ⚠ same type
BUB3 p.Ala239Gly Uncertain significance ★ ⚠ same type
BUB3 p.Ala292Val 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/bub3-p-ala187 (accessed [today's date]).

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