17-7220154-GGCCCGGCCCT-G

Position:

• chr17-7220154-GGCCCGGCCCT-G

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM2_Supporting PVS1

This summary comes from the ClinGen Evidence Repository: The c.103_112del (p.(Pro35Glyfs*23)) (NM_000018.4) variant in ACADVL is a frameshift variant predicted to cause a premature stop codon in biologically-relevant-exon 2/20 leading to nonsense mediated decay in a gene in which loss-of-function is an established disease mechanism (PVS1; PMIDs: 9973285, 11590124). This variant is absent from gnomAD 2.1.1 (PM2_Supporting). To our knowledge, functional assays have not been reported for this variant. To our knowledge, this variant has not been reported in the literature in any individuals with VLCADD. In summary, this variant has been classified as likely pathogenic for autosomal recessive very long chain acyl-CoA dehydrogenase deficiency based on the ACMG/AMP criteria applied, as specified by the ClinGen ACADVL Curation Expert Panel: PVS1, PM2_Supporting (ACADVL VCEP specifications v2.0; Approved on 11/10/2021). LINK:https://erepo.genome.network/evrepo/ui/classification/CA658798683/MONDO:0008723/021

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: ACADVL NM_000018.4 frameshift
• Clinical Significance: Likely pathogenic reviewed by expert panel P:4
• Conservation: PhyloP100: 1.39

Genes affected

ACADVL (HGNC:92): (acyl-CoA dehydrogenase very long chain) The protein encoded by this gene is targeted to the inner mitochondrial membrane where it catalyzes the first step of the mitochondrial fatty acid beta-oxidation pathway. This acyl-Coenzyme A dehydrogenase is specific to long-chain and very-long-chain fatty acids. A deficiency in this gene product reduces myocardial fatty acid beta-oxidation and is associated with cardiomyopathy. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

• PVS1: For more information check the summary or visit ClinGen Evidence Repository.
• PM2: For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ACADVL	NM_000018.4	c.103_112del	p.Pro35GlyfsTer23	frameshift_variant	2/20	ENST00000356839.10	NP_000009.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ACADVL	ENST00000356839.10	c.103_112del	p.Pro35GlyfsTer23	frameshift_variant	2/20	1	NM_000018.4	ENSP00000349297	P1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152192 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000144 AC: 2 AN: 1393290 Hom.: 0 AF XY: 0.00000145 AC XY: 1 AN XY: 688094

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000184

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152192 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74356

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000756

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:4

Revision: reviewed by expert panel

Submissions by phenotype

Very long chain acyl-CoA dehydrogenase deficiency Pathogenic:4

Likely pathogenic, reviewed by expert panel	curation	ClinGen ACADVL Variant Curation Expert Panel, ClinGen	Apr 06, 2022	The c.103_112del (p.(Pro35Glyfs*23)) (NM_000018.4) variant in ACADVL is a frameshift variant predicted to cause a premature stop codon in biologically-relevant-exon 2/20 leading to nonsense mediated decay in a gene in which loss-of-function is an established disease mechanism (PVS1; PMIDs: 9973285, 11590124). This variant is absent from gnomAD 2.1.1 (PM2_Supporting). To our knowledge, functional assays have not been reported for this variant. To our knowledge, this variant has not been reported in the literature in any individuals with VLCADD. In summary, this variant has been classified as likely pathogenic for autosomal recessive very long chain acyl-CoA dehydrogenase deficiency based on the ACMG/AMP criteria applied, as specified by the ClinGen ACADVL Curation Expert Panel: PVS1, PM2_Supporting (ACADVL VCEP specifications v2.0; Approved on 11/10/2021). -
Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Apr 13, 2023	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 04, 2023	This sequence change creates a premature translational stop signal (p.Pro35Glyfs*23) in the ACADVL gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in ACADVL are known to be pathogenic (PMID: 9973285, 11590124). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with ACADVL-related conditions. ClinVar contains an entry for this variant (Variation ID: 541714). For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Aug 12, 2021	- -

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1329022268; hg19: chr17-7123473;