PEX13
Chr 2ARperoxisomal biogenesis factor 13
Also known as: NALD, PBD11A, PBD11B, ZWS
This gene encodes a peroxisomal membrane protein that binds the type 1 peroxisomal targeting signal receptor via a cytoplasmic SH3 domain, facilitating protein import into peroxisomes. Mutations cause autosomal recessive peroxisome biogenesis disorders including Zellweger syndrome (PBD11A) and the milder PBD11B phenotype. Loss-of-function mutations disrupt peroxisomal protein import and peroxisome assembly, leading to the characteristic metabolic and developmental abnormalities seen in these disorders.
Definitive — sufficient evidence for diagnostic panels
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Highly tolerant — LoF variants common in population
Tolerant to missense variation
Predictions shown for reference only — model trained on dominant genes, not applicable to AR conditions.
The Badonyi & Marsh prediction model was trained exclusively on dominant disease genes. Predictions are not reliable for genes with autosomal recessive inheritance and are shown at reduced opacity for reference only.
Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.
ClinVar Variant Classifications
400 submitted variants in ClinVar
Classification Summary
Curated Variants Distribution
Classified variants from ClinVar · 5 ACMG categories
| Classification | LoF | Missense + Inframe | Non-coding | Synonymous | Total |
|---|---|---|---|---|---|
Pathogenic | 27 | 0 | 5 | 0 | 32 |
Likely Pathogenic | 5 | 0 | 3 | 0 | 8 |
VUS | 2 | 162 | 11 | 0 | 175 |
Likely Benign | 0 | 0 | 42 | 130 | 172 |
Benign | 0 | 0 | 1 | 0 | 1 |
| Total | 34 | 162 | 62 | 130 | 388 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
PEX13 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
3D Protein StructureAlphaFold
External Resources
Links to major genomics databases and tools
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
No active trials found for this gene.
Search ClinicalTrials.gov →External Resources
Links to major genomics databases and tools