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PEX2 p.Ser175fs

c.524del · rs2132043781 · VCV1445756

Pathogenic Single submitter
Classification
Pathogenic
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
Consequence
frameshift
predicted LoF
gnomAD v4.1
Rare
very rare (popmax 0.000763%, nfe)
Conditions
1
peroxisome biogenesis disorder 5A (Zellweger)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequenceframeshiftpredicted loss-of-function
NMDescapespremature termination codon in the last exon (4 of 4) — the truncated protein is likely expressed. PVS1 input, not an applied code
Splicing
SpliceAI—not assessed · substitutions only
Constraint at this position
ConservationphyloP -0.095GERP -3.1, phastCons 0.01

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.000763% European (non-Finnish) · 9/1,180,034 alleles
Filtering AF 0.000359% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00026%
Overall 0.000619% 10/1,614,212 alleles · very rare exomes 10/1,461,836 · genomes 0/152,376 · joint denominator
Ancestry group Frequency 1 in
Remaining individualsnot grpmax-eligible 0.0016% 62,510
European (non-Finnish)grpmax 0.000763% 131,115

Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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
PEX2
Protein
p.Ser175fs
Coding
c.524del
MANE Select
NM_000318
dbSNP
rs2132043781
Type
Deletion
Location
chr8:76983655 (GRCh38)
Gene constraint
LOEUF 1.057 · pLI <0.01 (gnomAD)
Structure
AlphaFold pLDDT 81.17
Residue 175
a UniProt-annotated variant site (in pbd5a); a UniProt-annotated variant site (in pbd5b and pbd5a)
Full PEX2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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/pex2-p-ser175fs (accessed [today's date]).

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