NM_000018.4(ACADVL):c.1605+6T>C AND Very long chain acyl-CoA dehydrogenase deficiency

Germline classification:: Benign (8 submissions)
Last evaluated:: Jun 27, 2023
Review status:: 3 stars out of maximum of 4 stars
reviewed by expert panel

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV000169539.28

Allele description [Variation Report for NM_000018.4(ACADVL):c.1605+6T>C]

NM_000018.4(ACADVL):c.1605+6T>C

Gene:

ACADVL:acyl-CoA dehydrogenase very long chain [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

17p13.1

Genomic location:

Preferred name:

NM_000018.4(ACADVL):c.1605+6T>C

HGVS:

NC_000017.11:g.7224399T>C
NG_007975.1:g.9566T>C
NG_008391.2:g.652A>G
NG_033038.1:g.15146A>G
NM_000018.4:c.1605+6T>CMANE SELECT
NM_001033859.3:c.1539+6T>C
NM_001270447.2:c.1674+6T>C
NM_001270448.2:c.1377+6T>C
NC_000017.10:g.7127718T>C
NM_000018.2:c.1605+6T>C
NM_000018.3:c.1605+6T>C
NM_001270448.1:c.1377+6T>C

Links:

dbSNP: rs17671352

NCBI 1000 Genomes Browser:

rs17671352

Molecular consequence:

NM_000018.4:c.1605+6T>C - intron variant - [Sequence Ontology: SO:0001627]
NM_001033859.3:c.1539+6T>C - intron variant - [Sequence Ontology: SO:0001627]
NM_001270447.2:c.1674+6T>C - intron variant - [Sequence Ontology: SO:0001627]
NM_001270448.2:c.1377+6T>C - intron variant - [Sequence Ontology: SO:0001627]

Condition(s)

Name:: Very long chain acyl-CoA dehydrogenase deficiency (ACADVLD)
Synonyms:: VLCAD deficiency
Identifiers:: MONDO: MONDO:0008723; MedGen: C3887523; Orphanet: 26793; OMIM: 201475

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000221021	Counsyl	criteria provided, single submitter (Counsyl Autosomal and X-linked Recessive Disease Classification criteria (2015))	Benign (Jan 13, 2015)	unknown	literature only	PubMed (1) [See all records that cite this PMID] Counsyl Autosomal and X-linked Recessive Disease Classification criteria (2015), Citation Link,
SCV000406328	Illumina Laboratory Services, Illumina	criteria provided, single submitter (ICSL Variant Classification Criteria 13 December 2019)	Benign (Jan 13, 2018)	germline	clinical testing	Citation Link,
SCV000602351	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	criteria provided, single submitter (ARUP Molecular Germline Variant Investigation Process 2021)	Benign (Feb 23, 2022)	germline	clinical testing	Citation Link,
SCV001365185	Wong Mito Lab, Molecular and Human Genetics, Baylor College of Medicine	criteria provided, single submitter (ACMG Guidelines, 2015)	Benign (Nov 1, 2019)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001459261	Natera, Inc.	no assertion criteria provided	Benign (Sep 16, 2020)	germline	clinical testing
SCV001730017	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Benign (Feb 1, 2024)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001754713	Genome-Nilou Lab	criteria provided, single submitter (ACMG Guidelines, 2015)	Benign (Jul 8, 2021)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV003936888	ClinGen ACADVL Variant Curation Expert Panel, ClinGen	reviewed by expert panel (clingen acadvl acmg specifications v1)	Benign (Jun 27, 2023)	germline	curation	Citation Link

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing, curation
not provided	germline	no	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	unknown	unknown	not provided	not provided	not provided	not provided	not provided	literature only

Citations

PubMed

Atypical presentation of VLCAD deficiency associated with a novel ACADVL splicing mutation.

Shchelochkov O, Wong LJ, Shaibani A, Shinawi M.

Muscle Nerve. 2009 Mar;39(3):374-82. doi: 10.1002/mus.21157.

PubMed [citation]

PMID:: 19208414

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

See all PubMed Citations (3)

Details of each submission

From Counsyl, SCV000221021.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	literature only	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Illumina Laboratory Services, Illumina, SCV000406328.3

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

Description

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories, SCV000602351.6

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Wong Mito Lab, Molecular and Human Genetics, Baylor College of Medicine, SCV001365185.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

The NM_000018.3:c.1605+6T>C (NP_000009.1:p.?) [GRCH38: NC_000017.11:g.7224399T>C] variant in ACADVL gene is interpretated to be Benign based on ACMG guidelines (PMID: 25741868). This variant has been reported. This variant meets the following evidence codes reported in the ACMG guidelines: BS1, BS2

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Natera, Inc., SCV001459261.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Labcorp Genetics (formerly Invitae), Labcorp, SCV001730017.4

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Genome-Nilou Lab, SCV001754713.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	no	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From ClinGen ACADVL Variant Curation Expert Panel, ClinGen, SCV003936888.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	curation	not provided

Description

The c.1605+6T>C variant in ACADVL is an intronic variant which occurs in intron 16. The highest population minor allele frequency in gnomAD v2.1.1 is 0.66 in European Finnish population, which is higher than the ClinGen ACADVL Variant Curation Expert Panel threshold (>=0.007) for BA1, and therefore meets this criterion (BA1). The results from in silico splicing predictors (SpliceAI) support that this variant does not affect splicing (BP4). In summary, this variant meets the criteria to be classified as benign 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 ExpertPanel: BA1, BP4.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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