Is PEX1 p.Ser1041= (c.3123C>T) pathogenic?

PEX1 p.Ser1041= (c.3123C>T) is classified Likely benign in PEX1 (ClinVar, Single submitter, 1 submitter; last evaluated 2026-01-03). Very rare (popmax 8.49e-05%, nfe); Associated with Zellweger spectrum disorders.

What condition is associated with PEX1 p.Ser1041= (c.3123C>T)?

PEX1 p.Ser1041= (c.3123C>T) is associated with Zellweger spectrum disorders (ClinVar).

How common is PEX1 p.Ser1041= (c.3123C>T) in the general population?

PEX1 p.Ser1041= (c.3123C>T) is very rare (popmax 8.49e-05%, nfe) (gnomAD).

How is Zellweger syndrome inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

PEX1 p.Ser1041=

c.3123C>T · rs1466220619 · VCV2161988

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 8.49e-05%, nfe)

Conditions

Zellweger spectrum disorders

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not looked up on this page · why
Constraint at this position
Conservation	phyloP 2.8	GERP 3, phastCons 1
Overall
CADD	15.83	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.49e-05% European (non-Finnish) · 1/1,177,478 alleles

Overall 6.21e-05% 1/1,611,324 alleles · very rare exomes 1/1,459,096 · genomes 0/152,228 · 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: PEX1
Protein: p.Ser1041=
Coding: c.3123C>T
MANE Select: NM_000466
dbSNP: rs1466220619
Type: single nucleotide variant
Location: chr7:92493037 (GRCh38)

Full PEX1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Zellweger spectrum disorders — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Zellweger syndrome (Orphanet):

Inheritance: Autosomal recessive
Onset: Neonatal

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/pex1-p-ser1041 (accessed [today's date]).

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