PGAP3 p.Ala108=
c.324C>T · rs138892403 · VCV714858
Benign
Single submitter
Classification
Benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
rare (popmax 0.424%, afr)
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 -4.6 | GERP -4.4 |
| Overall | ||
| CADD | 1.14 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.424%
African / African-American · 318/75,012 alleles
Filtering AF
0.386%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.371%
Overall
0.0213%
343/1,613,054 alleles · rare
exomes 177/1,460,662 · genomes 166/152,392 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.424% | 236 |
| Remaining individualsnot grpmax-eligible | 0.0176% | 5,675 |
| Admixed American | 0.00836% | 11,965 |
| East Asian | 0.00223% | 44,834 |
| South Asian | 0.0011% | 90,880 |
| European (non-Finnish) | 0.000593% | 168,509 |
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
- PGAP3
- Protein
- p.Ala108=
- Coding
- c.324C>T
- MANE Select
- NM_033419
- dbSNP
- rs138892403
- Type
- single nucleotide variant
- Location
- chr17:39684705 (GRCh38)
- Gene constraint
- LOEUF 1.147 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 93.17
Similar variants
- PGAP3 c.558-10G>A Pathogenic/Likely pathogenic ★★ same type
- PGAP3 c.694+1G>A Pathogenic ★★ same type
- PGAP3 p.Asp305Gly Pathogenic/Likely pathogenic ★★ same type
- PGAP3 p.Gln89Ter Pathogenic ★★ same type
- PGAP3 p.Glu37Ter Pathogenic ★★ same type
- PGAP3 p.His284Arg Pathogenic/Likely pathogenic ★★ ⚠ same type
- PGAP3 p.His284Tyr Pathogenic/Likely pathogenic ★★ same type
- PGAP3 p.Pro105Gln 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/pgap3-p-ala108 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown