TRAPPC9 p.Ser229=
c.687G>A · rs776317177 · VCV437037
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 3 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0176%, sas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| REVEL | 0.032 | moderately benign-leaning |
|---|---|---|
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP -11 | GERP -2.9 |
| Overall | ||
| CADD | 0.535 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0176%
South Asian · 16/91,090 alleles
Filtering AF
0.011%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00888%
Overall
0.0031%
50/1,614,112 alleles · ultra-rare
exomes 48/1,461,886 · genomes 2/152,226 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 0.0176% | 5,693 |
| Remaining individualsnot grpmax-eligible | 0.008% | 12,498 |
| European (non-Finnish) | 0.00229% | 43,706 |
| Admixed American | 0.00167% | 60,008 |
| African / African-American | 0.00133% | 74,932 |
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
- TRAPPC9
- Protein
- p.Ser229=
- Coding
- c.687G>A
- MANE Select
- NM_001160372
- dbSNP
- rs776317177
- Type
- single nucleotide variant
- Location
- chr8:140439095 (GRCh38)
- Gene constraint
- LOEUF 0.786 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 82.98
Similar variants
- TRAPPC9 c.2700-2A>T Pathogenic/Likely pathogenic ★★ same type
- TRAPPC9 c.2811-1G>A Likely pathogenic ★★ same type
- TRAPPC9 c.3279+1G>A Pathogenic/Likely pathogenic ★★ same type
- TRAPPC9 c.-204C>T Pathogenic/Likely pathogenic ★★ same type
- TRAPPC9 p.Arg377Ter Pathogenic ★★ same type
- TRAPPC9 p.Arg472Ter Pathogenic/Likely pathogenic ★★ same type
- TRAPPC9 p.Arg51Ter Pathogenic/Likely pathogenic ★★ same type
- TRAPPC9 p.Arg614Ter 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/trappc9-p-ser229 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown