PEX16

Chr 11AR

peroxisomal biogenesis factor 16

Also known as: PBD8A, PBD8B

The protein is an integral peroxisomal membrane protein required for peroxisome biogenesis and organization. Mutations cause autosomal recessive peroxisome biogenesis disorders including Zellweger syndrome (type 8A) and the milder type 8B, through loss of protein function that prevents normal peroxisome formation.

GeneReviewsOMIMResearchSummary from RefSeq, OMIM, UniProt, Mechanism
LOFmechanismARLOEUF 0.822 OMIM phenotypes
Clinical SummaryPEX16
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Gene-Disease Validity (ClinGen)
peroxisome biogenesis disorder · ARDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📖
GeneReview available — PEX16
Authoritative clinical overview · Recommended first read
Open GeneReview ↗

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
0.82LOEUF
pLI 0.000
Z-score 2.16
OE 0.49 (0.300.82)
Tolerant

Typical tolerance to LoF variation

Missense Constraint
0.45Z-score
OE missense 0.91 (0.811.03)
195 obs / 213.6 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.49 (0.300.82)
00.351.4
Missense OE0.91 (0.811.03)
00.61.4
Synonymous OE1.02
01.21.6
LoF obs/exp: 10 / 20.6Missense obs/exp: 195 / 213.6Syn Z: -0.12
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
definitivePEX16-related peroxisome biogenesis disorder 8BLOFAR
definitivePEX16-related peroxisome biogenesis disorder 8A (Zellweger)LOFAR

Predictions shown for reference only — model trained on dominant genes, not applicable to AR conditions.

DN
0.7035th %ile
GOF
0.5269th %ile
LOF
0.3259th %ile

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

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

PEX16 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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Clinical Literature
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