Is PEX2 p.Lys100Glu (c.298A>G) pathogenic?

PEX2 p.Lys100Glu (c.298A>G) is classified Uncertain significance in PEX2 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-11-28). AlphaMissense: likely benign (0.0928); Very rare (popmax 0.0011%, sas); Associated with peroxisome biogenesis disorder 5A (Zellweger).

What condition is associated with PEX2 p.Lys100Glu (c.298A>G)?

PEX2 p.Lys100Glu (c.298A>G) is associated with peroxisome biogenesis disorder 5A (Zellweger) (ClinVar).

How common is PEX2 p.Lys100Glu (c.298A>G) in the general population?

PEX2 p.Lys100Glu (c.298A>G) is very rare (popmax 0.0011%, sas) (gnomAD).

What do computational predictors say about PEX2 p.Lys100Glu (c.298A>G)?

AlphaMissense predicts likely benign (score 0.0928) — an in-silico prediction, not a clinical call.

PEX2 p.Lys100Glu

c.298A>G · rs1806921038 · VCV1714811

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0928 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.0011%, sas)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Conditions

peroxisome biogenesis disorder 5A (Zellweger)

Computational evidence

Protein change
AlphaMissense	0.0928	likely benign
REVEL	0.336	indeterminate
SaProt	LLR -8.17	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL is indeterminate.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.41	GERP -1.3, phastCons 0.11
Regional constraint	o/e 0.99	unconstrained · MANE · 914 bp · p 0.85 · regional, not allelic
Overall
CADD	16.47	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0011% South Asian · 1/91,082 alleles

Overall 6.2e-05% 1/1,614,086 alleles · very rare exomes 0/1,461,884 · genomes 1/152,202 · joint denominator

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.Lys100Glu
Coding: c.298A>G
MANE Select: NM_000318
dbSNP: rs1806921038
Type: single nucleotide variant
Location: chr8:76983881 (GRCh38)
Gene constraint: LOEUF 1.057 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 81.17
Residue 100: a UniProt-annotated variant site (in pbd5a)

Full PEX2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

peroxisome biogenesis disorder 5A (Zellweger) — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

PEX2 c.-17-2A>G Pathogenic/Likely pathogenic ★★ same condition
PEX2 p.Arg119Ter Pathogenic ★★ same condition
PEX2 p.Arg125Ter Pathogenic/Likely pathogenic ★★ same condition
PEX2 p.Gln31Ter Pathogenic/Likely pathogenic ★★ same condition
PEX2 p.Gln78Ter Pathogenic/Likely pathogenic ★★ same condition
PEX2 p.Gln96Ter Pathogenic ★★ same condition
PEX2 p.Glu168Ter Pathogenic/Likely pathogenic ★★ same condition
PEX2 p.Glu53Ter 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/pex2-p-lys100glu (accessed [today's date]).

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