Is PEX7 p.His18= (c.54C>T) pathogenic?

PEX7 p.His18= (c.54C>T) is classified Likely benign in PEX7 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-08-23). Very rare (popmax 8.78e-05%, nfe); Associated with peroxisome biogenesis disorder 9B.

What condition is associated with PEX7 p.His18= (c.54C>T)?

PEX7 p.His18= (c.54C>T) is associated with peroxisome biogenesis disorder 9B (ClinVar).

How common is PEX7 p.His18= (c.54C>T) in the general population?

PEX7 p.His18= (c.54C>T) is very rare (popmax 8.78e-05%, nfe) (gnomAD).

PEX7 p.His18=

c.54C>T · rs1188167149 · VCV1536668

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 8.78e-05%, nfe)

Conditions

peroxisome biogenesis disorder 9B

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.62	GERP -0.11, phastCons 0.021
Overall
CADD	13.19	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.78e-05% European (non-Finnish) · 1/1,138,318 alleles

Overall 6.6e-05% 1/1,514,786 alleles · very rare exomes 1/1,362,650 · genomes 0/152,136 · 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: PEX7
Protein: p.His18=
Coding: c.54C>T
MANE Select: NM_000288
dbSNP: rs1188167149
Type: single nucleotide variant
Location: chr6:136822719 (GRCh38)
Gene constraint: LOEUF 0.941 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 95.54

Full PEX7 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

peroxisome biogenesis disorder 9B — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

PEX7 p.His18Arg Uncertain significance ★ ⚠ same residue
PEX7 p.His18fs Pathogenic ★ same residue
PEX7 c.130+1G>A Pathogenic ★★ same condition
PEX7 c.131-1G>A Likely pathogenic ★★ same condition
PEX7 c.188+1G>A Pathogenic/Likely pathogenic ★★ same condition
PEX7 c.188+1G>C Pathogenic/Likely pathogenic ★★ same condition
PEX7 c.340-1G>T Likely pathogenic ★★ same condition
PEX7 c.634-2A>G 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/pex7-p-his18 (accessed [today's date]).

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