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INSYN2B p.Ala351=

c.1053C>T · rs2533428676 · VCV3234367

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00119%, sas)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI—not looked up on this page · why
Constraint at this position
ConservationphyloP 0.32GERP -2.8, phastCons 0.001
Overall
CADD3.364PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.00119% South Asian · 1/84,034 alleles
Overall 6.45e-05% 1/1,550,994 alleles · very rare exomes 1/1,398,854 · genomes 0/152,140 · joint denominator

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
INSYN2B
Protein
p.Ala351=
Coding
c.1053C>T
MANE Select
NM_001129891
dbSNP
rs2533428676
Type
single nucleotide variant
Location
chr5:169882846 (GRCh38)
Full INSYN2B gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

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/insyn2b-p-ala351 (accessed [today's date]).

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