rs149116708

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PP3_ModeratePP5

The NM_000018.4(ACADVL):​c.1198G>A​(p.Val400Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,876 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

ACADVL
NM_000018.4 missense

Scores

5
10
4

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:4U:2

Conservation

PhyloP100: 1.22
Variant links:
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PM1
In a helix (size 28) in uniprot entity ACADV_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_000018.4
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.88
PP5
Variant 17-7223659-G-A is Pathogenic according to our data. Variant chr17-7223659-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 551143.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=3, Uncertain_significance=2}.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ACADVLNM_000018.4 linkc.1198G>A p.Val400Met missense_variant Exon 12 of 20 ENST00000356839.10 NP_000009.1 P49748-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ACADVLENST00000356839.10 linkc.1198G>A p.Val400Met missense_variant Exon 12 of 20 1 NM_000018.4 ENSP00000349297.5 P49748-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000398
AC:
1
AN:
251466
Hom.:
0
AF XY:
0.00000736
AC XY:
1
AN XY:
135906
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000879
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461876
Hom.:
0
Cov.:
33
AF XY:
0.00000138
AC XY:
1
AN XY:
727240
show subpopulations
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:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Alfa
AF:
0.0000564
Hom.:
0
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:4Uncertain:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Very long chain acyl-CoA dehydrogenase deficiency Pathogenic:3Uncertain:2
Nov 01, 2019
Wong Mito Lab, Molecular and Human Genetics, Baylor College of Medicine
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The NM_000018.3:c.1198G>A (NP_000009.1:p.Val400Met) [GRCH38: NC_000017.11:g.7223659G>A] variant in ACADVL gene is interpretated to be Uncertain Significance based on ACMG guidelines (PMID: 25741868). This variant has been reported. This variant meets the following evidence codes reported in the ACMG guidelines: PP4, BP4 -

Apr 11, 2024
Fulgent Genetics, Fulgent Genetics
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Mar 16, 2017
Counsyl
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Mar 08, 2024
Baylor Genetics
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Nov 19, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 400 of the ACADVL protein (p.Val400Met). This variant is present in population databases (rs149116708, gnomAD 0.0009%). This missense change has been observed in individual(s) with very long chain acyl-CoA dehydrogenase (VLCAD) deficiency (PMID: 26385305, 27538624). ClinVar contains an entry for this variant (Variation ID: 551143). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt ACADVL protein function with a positive predictive value of 95%. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

ACADVL-related disorder Pathogenic:1
Jun 26, 2024
PreventionGenetics, part of Exact Sciences
Significance: Likely pathogenic
Review Status: no assertion criteria provided
Collection Method: clinical testing

The ACADVL c.1198G>A variant is predicted to result in the amino acid substitution p.Val400Met. This variant has been reported with another ACADVL variant in individuals with clinical and/or biochemical features consistent with very long chain acyl-CoA dehydrogenase deficiency (VLCADD, Yamamoto et al. 2016. PubMed ID: 27538624; Vallejo et al. 2021. PubMed ID: 34194748). In one individual, Western blot analysis of their fibroblast cells demonstrated reduced VLCAD protein expression and a skin biopsy confirmed the diagnosis (Yamamoto et al. 2016. PubMed ID: 27538624). This variant is reported in 0.00088% of alleles in individuals of European (Non-Finnish) descent in gnomAD. This variant is interpreted as likely pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.47
BayesDel_addAF
Pathogenic
0.18
D
BayesDel_noAF
Uncertain
0.020
CADD
Benign
23
DANN
Benign
0.95
DEOGEN2
Uncertain
0.73
.;D;.
Eigen
Uncertain
0.50
Eigen_PC
Uncertain
0.48
FATHMM_MKL
Uncertain
0.85
D
LIST_S2
Uncertain
0.97
D;D;D
M_CAP
Pathogenic
0.49
D
MetaRNN
Pathogenic
0.88
D;D;D
MetaSVM
Pathogenic
0.94
D
MutationAssessor
Uncertain
2.1
.;M;.
PrimateAI
Uncertain
0.53
T
PROVEAN
Benign
-1.6
N;.;N
REVEL
Pathogenic
0.70
Sift
Uncertain
0.0070
D;.;D
Sift4G
Benign
0.067
T;T;T
Polyphen
0.97, 0.89
.;D;P
Vest4
0.84
MVP
0.93
MPC
0.55
ClinPred
0.81
D
GERP RS
5.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
2.7
Varity_R
0.53
gMVP
0.76

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs149116708; hg19: chr17-7126978; COSMIC: COSV50039116; COSMIC: COSV50039116; API