TRAPPC12 p.Ser221=
c.663G>A · rs577065557 · VCV1588324
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0248%, eas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -13 | GERP -5.2 |
| Overall | ||
| CADD | 0.101 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0248%
East Asian · 11/44,332 alleles
Filtering AF
0.0139%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0107%
Overall
0.00267%
43/1,607,722 alleles · ultra-rare
exomes 36/1,455,570 · genomes 7/152,152 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| East Asiangrpmax | 0.0248% | 4,030 |
| Remaining individualsnot grpmax-eligible | 0.00321% | 31,121 |
| European (non-Finnish) | 0.00238% | 42,036 |
| African / African-American | 0.00135% | 74,048 |
| South Asian | 0.0011% | 90,516 |
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
- TRAPPC12
- Protein
- p.Ser221=
- Coding
- c.663G>A
- MANE Select
- NM_016030
- dbSNP
- rs577065557
- Type
- single nucleotide variant
- Location
- chr2:3388286 (GRCh38)
- Gene constraint
- LOEUF 1.192 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 68.52
Similar variants
- TRAPPC12 p.Ser221Leu Uncertain significance ★ ⚠ same residue
- TRAPPC12 p.Ala627Val Pathogenic/Likely pathogenic ★★ same type
- TRAPPC12 c.1531-3C>T Uncertain significance ★★ same type
- TRAPPC12 c.1603+5G>C Uncertain significance ★★ same type
- TRAPPC12 p.Ala309Val Uncertain significance ★★ ⚠ same type
- TRAPPC12 p.Ala485Thr Uncertain significance ★★ ⚠ same type
- TRAPPC12 p.Ala637Val Uncertain significance ★★ ⚠ same type
- TRAPPC12 p.Arg166Ser Uncertain significance ★★ ⚠ 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/trappc12-p-ser221 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown