ACADVL c.343del
ClinGen expert panel — ACADVL VCEP
Pathogenic for very long chain acyl-CoA dehydrogenase deficiency. Applied ACMG criteria (verbatim):
PVS1 PM2_Supporting PP4
Curation rationale (ClinGen, verbatim)
The NM_000018.4(ACADVL): c.343del (p.Glu115Lysfs) variant in ACADVL is a frameshift predicted to cause a premature stop codon in biologically relevant exon 6/20 leading to nonsense mediated decay in a gene in which loss-of-function is an established disease mechanism (PVS1: PMIDs 9973285, 11590124). The highest population minor allele frequency in gnomAD v2.1.1 is 0.00004 in African population, which is lower than the ClinGen ACADVL Variant Curation Expert Panel threshold (<0.001) for PM2_Supporting, meeting this criterion (PM2_Supporting). To our knowledge, functional assays have not been reported for this variant, however it has been reported in the literature in at least four individuals with VLCADD (PP4: PMID: 7479827, 31031081, 32778825). In summary, this variant meets the criteria to be classified as pathogenic for autosomal recessive very long chain acyl-CoA dehydrogenase (VLCAD) deficiency based on the ACMG/AMP criteria applied, as specified by the ClinGen ACADVL Variant Curation Expert Panel: PVS1, PM2_supporting, PP4.)
ClinGen Evidence Repository → · reported verbatim, not re-tallied by Sugi Variant.
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · substitutions only |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP 11 | GERP 1.9, phastCons 1 |
| Overall | ||
| CADD | 35.0 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.004% | 24,974 |
| European (non-Finnish) | 0.00398% | 25,107 |
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
- ACADVL
- Coding
- c.343del
- MANE Select
- NM_000018
- dbSNP
- rs387906249
- Type
- Deletion
- Location
- chr17:7220923 (GRCh38)
- Gene constraint
- LOEUF 1.077 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 90.65 · 3 PDB
Disease context
very long chain acyl-CoA dehydrogenase deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatmentsFor Very long chain acyl-CoA dehydrogenase deficiency (Orphanet):
- Inheritance
- Autosomal recessive
- Onset
- Infancy, Neonatal
- Prevalence
- 1-9 / 100 000 (Europe)
Similar variants
- ACADVL c.1606-3_1606-2del Pathogenic ★★★ same condition
- ACADVL c.1752-3_1755del Pathogenic ★★★ same condition
- ACADVL p.Ala347fs Likely pathogenic ★★★ same condition
- ACADVL p.Ala544fs Likely pathogenic ★★★ same condition
- ACADVL p.Ala577fs Likely pathogenic ★★★ same condition
- ACADVL p.Arg512fs Likely pathogenic ★★★ same condition
- ACADVL p.Asp257fs Likely pathogenic ★★★ same condition
- ACADVL p.Gln368fs 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/acadvl-c-343del (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown