TPP1 p.Arg208=
c.624A>T · rs757167692 · VCV1145096
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.02%, eas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | <0.2 | no splice effect predicted · four deltas, not one · how we know |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP 0.081 | GERP -0.83, phastCons 0.96 |
| Overall | ||
| CADD | 6.634 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.02%
East Asian · 9/44,896 alleles
Filtering AF
0.0104%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00779%
Overall
0.000558%
9/1,614,032 alleles · ultra-rare
exomes 7/1,461,860 · genomes 2/152,172 · 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
- TPP1
- Protein
- p.Arg208=
- Coding
- c.624A>T
- MANE Select
- NM_000391
- dbSNP
- rs757167692
- Type
- single nucleotide variant
- Location
- chr11:6617038 (GRCh38)
- Gene constraint
- LOEUF 0.78 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 90.70 · 2 PDB
- Residue 208
- the peptidase s53 domain; an α-helix
Similar variants
- TPP1 p.Arg208Ter Pathogenic ★★ same residue
- TPP1 p.Arg208Gln Uncertain significance ★★ ⚠ same residue
- TPP1 c.1075+2T>C Pathogenic/Likely pathogenic ★★ same type
- TPP1 c.1076-2A>G Pathogenic/Likely pathogenic ★★ same type
- TPP1 c.1076-2A>T Pathogenic ★★ same type
- TPP1 c.1146-1G>A Likely pathogenic ★★ same type
- TPP1 c.1425+1G>A Likely pathogenic ★★ same type
- TPP1 c.1551+1G>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/tpp1-p-arg208 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown