Is PRX p.Val832= (c.2496A>T) pathogenic?

PRX p.Val832= (c.2496A>T) is classified Likely benign in PRX (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-06-16). Very rare (popmax 0.00833%, amr); Associated with Charcot-Marie-Tooth disease type 4.

What condition is associated with PRX p.Val832= (c.2496A>T)?

PRX p.Val832= (c.2496A>T) is associated with Charcot-Marie-Tooth disease type 4 (ClinVar).

How common is PRX p.Val832= (c.2496A>T) in the general population?

PRX p.Val832= (c.2496A>T) is very rare (popmax 0.00833%, amr) (gnomAD).

PRX p.Val832=

c.2496A>T · rs777527307 · VCV668185

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00833%, amr)

Conditions

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 -0.12	GERP -4.1
Overall
CADD	5.123	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00833% Admixed American · 5/60,028 alleles

Filtering AF 0.00323% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00206%

Overall 0.00192% 28/1,461,876 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00833%	12,006
European (non-Finnish)	0.00186%	53,638
Remaining individualsnot grpmax-eligible	0.0016%	62,506

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.Val832=
Coding: c.2496A>T
MANE Select: NM_181882
dbSNP: rs777527307
Type: single nucleotide variant
Location: chr19:40395856 (GRCh38)
Gene constraint: LOEUF 1.321 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 35.74 · 1 PDB

Full PRX gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Charcot-Marie-Tooth disease type 4 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

PRX p.Val832Leu Conflicting classifications of pathogenicity ★ ⚠ 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-val832 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown