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BSN p.Gln240=

c.720G>A · rs192482729 · VCV3040984

Likely benign No assertion criteria
Classification
Likely benign
ClinVar
Review
No assertion criteria ☆☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
low-frequency (popmax 1.99%, eas)
Conditions
1
BSN-related disorder

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 5.8GERP 2.5, phastCons 1
Overall
CADD7.511PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 1.99% East Asian · 881/44,364 alleles
Filtering AF 1.88% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.83%
Overall 0.0555% 888/1,599,194 alleles · low-frequency
Ancestry group Frequency 1 in
East Asiangrpmax 1.99% 50
Remaining individualsnot grpmax-eligible 0.00969% 10,317
Admixed American 0.00173% 57,792

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
BSN
Protein
p.Gln240=
Coding
c.720G>A
MANE Select
NM_003458
dbSNP
rs192482729
Type
single nucleotide variant
Location
chr3:49642354 (GRCh38)
Gene constraint
LOEUF 0.271 · pLI 1.00 (gnomAD)
Residue 240
the 'disordered' region
Full BSN gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

BSN-related disorder

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/bsn-p-gln240 (accessed [today's date]).

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