Is CPT2 p.Glu313= (c.939G>A) pathogenic?

CPT2 p.Glu313= (c.939G>A) is classified Likely benign in CPT2 (ClinVar, Single submitter, 2 submitters; last evaluated 2025-11-18). Very rare (popmax 8.47e-05%, nfe); Associated with carnitine palmitoyltransferase II deficiency.

What condition is associated with CPT2 p.Glu313= (c.939G>A)?

CPT2 p.Glu313= (c.939G>A) is associated with carnitine palmitoyltransferase II deficiency (ClinVar).

How common is CPT2 p.Glu313= (c.939G>A) in the general population?

CPT2 p.Glu313= (c.939G>A) is very rare (popmax 8.47e-05%, nfe) (gnomAD).

How is Carnitine palmitoyltransferase II deficiency inherited?

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

CPT2 p.Glu313=

c.939G>A · rs2525588660 · VCV2697102

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 8.47e-05%, nfe)

Conditions

carnitine palmitoyltransferase II deficiency

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 0.46	GERP -0.9, phastCons 0.011
Overall
CADD	2.936	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.47e-05% European (non-Finnish) · 1/1,180,038 alleles

Overall 0.000124% 2/1,614,158 alleles · very rare exomes 2/1,461,884 · genomes 0/152,274 · joint denominator

Ancestry group	Frequency	1 in
Finnishnot grpmax-eligible	0.00156%	64,026
European (non-Finnish)grpmax	8.47e-05%	1,180,038

Finnish 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: CPT2
Protein: p.Glu313=
Coding: c.939G>A
MANE Select: NM_000098
dbSNP: rs2525588660
Type: single nucleotide variant
Location: chr1:53210613 (GRCh38)
Gene constraint: LOEUF 1.038 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 94.52

Full CPT2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

carnitine palmitoyltransferase II deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Carnitine palmitoyltransferase II deficiency (Orphanet):

Inheritance: Autosomal recessive
Onset: All ages

Similar variants

CPT2 c.340+1G>C Pathogenic/Likely pathogenic ★★ same condition
CPT2 c.340+5G>A Likely pathogenic ★★ same condition
CPT2 c.341-2A>G Pathogenic/Likely pathogenic ★★ same condition
CPT2 p.Ala67Gly Likely pathogenic ★★ ⚠ same condition
CPT2 p.Arg124Gln Likely pathogenic ★★ same condition
CPT2 p.Arg124Ter Pathogenic/Likely pathogenic ★★ same condition
CPT2 p.Arg151Gln Pathogenic/Likely pathogenic ★★ same condition
CPT2 p.Arg151Trp 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/cpt2-p-glu313 (accessed [today's date]).

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