PPOX p.His281=
c.843C>T · rs150603927 · VCV1095687
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.00401%, afr)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| REVEL | 0.071 | moderately benign-leaning |
|---|---|---|
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP -2.7 | GERP -3.5 |
| Overall | ||
| CADD | 4.63 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00401%
African / African-American · 3/74,900 alleles
Filtering AF
0.00106%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000787%
Overall
0.00155%
25/1,614,038 alleles · very rare
exomes 19/1,461,878 · genomes 6/152,160 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.00401% | 24,967 |
| South Asian | 0.00329% | 30,361 |
| Remaining individualsnot grpmax-eligible | 0.0016% | 62,488 |
| European (non-Finnish) | 0.00153% | 65,557 |
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
- PPOX
- Protein
- p.His281=
- Coding
- c.843C>T
- MANE Select
- NM_001122764
- dbSNP
- rs150603927
- Type
- single nucleotide variant
- Location
- chr1:161169695 (GRCh38)
- Gene constraint
- LOEUF 0.581 · pLI 0.24 (gnomAD)
- Structure
- AlphaFold pLDDT 95.39 · 3 PDB
- Residue 281
- a β-strand; a UniProt-annotated variant site (in vp)
Similar variants
- PPOX p.His281Arg Uncertain significance ★★ ⚠ same residue
- PPOX c.-9G>A Likely pathogenic ★★ same type
- PPOX p.Arg168His Pathogenic/Likely pathogenic ★★ ⚠ same type
- PPOX p.Arg59Trp Pathogenic ★★ same type
- PPOX p.Gln189Ter Pathogenic ★★ same type
- PPOX p.Gln435Ter Pathogenic/Likely pathogenic ★★ same type
- PPOX p.Glu133Ter Pathogenic ★★ same type
- PPOX p.Glu191Ter 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/ppox-p-his281 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown