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BUB1 p.Cys407=

c.1221T>C · rs774563610 · VCV3223991

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00034%, nfe)

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
ConservationphyloP 5.4phastCons 0.45
Overall
CADD10.38PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.00034% European (non-Finnish) · 4/1,177,580 alleles
Filtering AF 8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 5.4e-05%
Overall 0.000274% 4/1,458,570 alleles · very rare

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
BUB1
Protein
p.Cys407=
Coding
c.1221T>C
MANE Select
NM_004336
dbSNP
rs774563610
Type
single nucleotide variant
Location
chr2:110660033 (GRCh38)
Gene constraint
LOEUF 0.727 · pLI <0.01 (gnomAD)
Structure
AlphaFold pLDDT 63.91 · 11 PDB
Full BUB1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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-cys407 (accessed [today's date]).

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