PRX p.Asp1278=
c.3834C>T · rs768961174 · VCV2882444
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0165%, mid)
Conditions
1
Charcot-Marie-Tooth disease type 4
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 -20 | GERP -3.4 |
| Overall | ||
| CADD | 0.009 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0165%
Middle Eastern · 1/6,068 alleles
Filtering AF
0.0023%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00138%
Overall
0.00112%
18/1,600,292 alleles · ultra-rare
exomes 16/1,448,172 · genomes 2/152,120 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Middle Easterngrpmax | 0.0165% | 6,068 |
| Admixed American | 0.00687% | 14,553 |
| Remaining individualsnot grpmax-eligible | 0.00323% | 30,947 |
| South Asian | 0.00224% | 44,734 |
| European (non-Finnish) | 0.000767% | 130,463 |
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
- PRX
- Protein
- p.Asp1278=
- Coding
- c.3834C>T
- MANE Select
- NM_181882
- dbSNP
- rs768961174
- Type
- single nucleotide variant
- Location
- chr19:40394518 (GRCh38)
- Gene constraint
- LOEUF 1.321 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 35.74 · 1 PDB
Similar variants
- PRX p.Asp1278Asn Uncertain significance ★★ ⚠ same residue
- PRX c.184+2T>C Likely pathogenic ★★ same condition
- PRX p.Arg1070Ter Pathogenic/Likely pathogenic ★★ same condition
- PRX p.Arg196Ter Pathogenic/Likely pathogenic ★★ same condition
- PRX p.Arg364Ter Pathogenic ★★ same condition
- PRX p.Arg368Ter Pathogenic/Likely pathogenic ★★ same condition
- PRX p.Arg392Ter Pathogenic/Likely pathogenic ★★ same condition
- PRX p.Arg464Ter Pathogenic/Likely pathogenic ★★ same condition
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/prx-p-asp1278 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown