SPTB p.Trp1493Ter
c.4479G>A · rs2503087933 · VCV2082686
Pathogenic/Likely pathogenic
Multiple submitters
Classification
Pathogenic/Likely pathogenic
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
Consequence
nonsense (stop-gain)
predicted LoF
gnomAD v4.1
Absent
absent from gnomAD v4.1
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Consequence | nonsense (stop-gain) | predicted loss-of-function in a LoF-intolerant gene |
|---|---|---|
| NMD | predicted | premature termination codon in exon 22 of 36 |
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 7.7 | GERP 2.7, phastCons 1 |
| Overall | ||
| CADD | 54.0 | PHRED · no single calibrated threshold — expert panels disagree |
Predicted loss-of-function is descriptive, not an applied PVS1 code.
Population frequency
gnomAD v4.1 · exomes + genomes
Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.
Variant & gene context
- Gene
- SPTB
- Protein
- p.Trp1493Ter
- Coding
- c.4479G>A
- MANE Select
- NM_001355436
- dbSNP
- rs2503087933
- Type
- single nucleotide variant
- Location
- chr14:64779241 (GRCh38)
- Gene constraint
- LOEUF 0.228 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 79.55 · 6 PDB
Similar variants
- SPTB p.Trp1493Arg Uncertain significance ★ ⚠ same residue
- SPTB c.1064+1G>A Pathogenic ★★ same type
- SPTB c.1341+1G>A Likely pathogenic ★★ same type
- SPTB c.3764+1G>A Pathogenic/Likely pathogenic ★★ same type
- SPTB c.474+1G>A Likely pathogenic ★★ same type
- SPTB c.474+1G>T Pathogenic/Likely pathogenic ★★ same type
- SPTB c.4843-1G>T Likely pathogenic ★★ same type
- SPTB c.4973+5G>A Pathogenic/Likely pathogenic ★★ 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/sptb-p-trp1493ter (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown