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BSND p.Val63Ile

c.187G>A · rs761711473 · VCV2187027

Uncertain significance Multiple submitters
Classification
Uncertain significance
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
AlphaMissense
likely benign
0.0767 · ACMG-weighted
gnomAD v4.1
Rare
ultra-rare (popmax 0.0209%, sas)
Missense predictors
0/3 damaging
AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense0.0767likely benign
REVEL0.018moderately benign-leaning
SaProtLLR -6.74tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI—not assessed · no allele here is in the release
Constraint at this position
ConservationphyloP 0.3GERP 0.18, phastCons 0.002
Regional constrainto/e 0.91unconstrained · MANE · 9,438 bp · p 0.065 · regional, not allelic
Overall
CADD3.05PHRED · 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 0.0209% South Asian · 19/91,072 alleles
Filtering AF 0.0136% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0114%
Overall 0.00291% 47/1,613,994 alleles · ultra-rare
Ancestry group Frequency 1 in
South Asiangrpmax 0.0209% 4,793
East Asian 0.00223% 44,896
European (non-Finnish) 0.00195% 51,305
Admixed American 0.00167% 59,998
Remaining individualsnot grpmax-eligible 0.0016% 62,488
Finnishnot grpmax-eligible 0.00156% 64,004
African / African-American 0.00133% 74,910

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
BSND
Protein
p.Val63Ile
Coding
c.187G>A
MANE Select
NM_057176
dbSNP
rs761711473
Type
single nucleotide variant
Location
chr1:55005031 (GRCh38)
Gene constraint
LOEUF 1.03 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure
AlphaFold pLDDT 53.80
Residue 63
a UniProt-annotated variant site (in barts4a); a UniProt-annotated variant site (in barts4a; loss of clcnka and clcnkb channel conductance); the 'regulates channel membrane trafficking and ion conductance' region
Full BSND 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/bsnd-p-val63ile (accessed [today's date]).

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