Is BUB1 p.Ala940Ser (c.2818G>T) pathogenic?

BUB1 p.Ala940Ser (c.2818G>T) is classified Uncertain significance in BUB1 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-11-17). AlphaMissense: likely benign (0.0814); No allele count reported in gnomAD v4.1 (AN 1,605,962).

How common is BUB1 p.Ala940Ser (c.2818G>T) in the general population?

BUB1 p.Ala940Ser (c.2818G>T) is no allele count reported in gnomAD v4.1 (AN 1,605,962) (gnomAD).

What do computational predictors say about BUB1 p.Ala940Ser (c.2818G>T)?

AlphaMissense predicts likely benign (score 0.0814) — an in-silico prediction, not a clinical call.

BUB1 p.Ala940Ser

c.2818G>T · rs2467970500 · VCV2451226

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0814 · ACMG-weighted

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,605,962)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0814	likely benign
REVEL	0.046	moderately benign-leaning
SaProt	LLR -0.80	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 0.91	phastCons 1
Regional constraint	o/e 0.90	unconstrained · MANE · 40 kb · p 0.00043 · regional, not allelic
Overall
CADD	18.93	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

No allele count reported in gnomAD v4.1 (AN 1,605,962). This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: BUB1
Protein: p.Ala940Ser
Coding: c.2818G>T
MANE Select: NM_004336
dbSNP: rs2467970500
Type: single nucleotide variant
Location: chr2:110641171 (GRCh38)
Gene constraint: LOEUF 0.727 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 63.91 · 11 PDB
Residue 940: the protein kinase domain; a β-strand

Full BUB1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BUB1 p.Ala940Val Uncertain significance ★ ⚠ same residue
BUB1 c.1698+1G>T Uncertain significance ★★ same type
BUB1 p.Ala281Thr Uncertain significance ★★ ⚠ same type
BUB1 p.Ala283Thr Uncertain significance ★★ ⚠ same type
BUB1 p.Ala499Val Uncertain significance ★★ ⚠ same type
BUB1 p.Ala502Ser Uncertain significance ★★ ⚠ same type
BUB1 p.Ala630Gly Uncertain significance ★★ ⚠ same type
BUB1 p.Ala705Thr 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/bub1-p-ala940ser (accessed [today's date]).

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