The ClinGen Evidence Repository is an FDA-recognized human genetic variant database containing expert-curated assertions regarding variants' pathogenicity and supporting evidence summaries. [Disclaimer]
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Variant: NM_000018.4:c.1077+2T>A

CA397724300

Gene: ACADVL
Condition: very long chain acyl-CoA dehydrogenase deficiency
Inheritance Mode: Autosomal recessive inheritance
UUID: d250c95e-c88d-4ac1-9506-1284b154c09b

HGVS expressions

NM_000018.4:c.1077+2T>A
NC_000017.11:g.7222867T>A
CM000679.2:g.7222867T>A
NC_000017.10:g.7126186T>A
CM000679.1:g.7126186T>A
NC_000017.9:g.7066910T>A
NG_007975.1:g.8034T>A
NG_008391.2:g.2184A>T
ENST00000356839.10:c.1077+2T>A
ENST00000322910.9:c.*1032+2T>A
ENST00000350303.9:c.1011+2T>A
ENST00000356839.9:c.1077+2T>A
ENST00000543245.6:c.1146+2T>A
ENST00000578824.5:n.228T>A
ENST00000582379.1:n.463T>A
ENST00000583858.5:n.106+2T>A
ENST00000585203.6:n.20T>A
NM_000018.3:c.1077+2T>A
NM_001033859.2:c.1011+2T>A
NM_001270447.1:c.1146+2T>A
NM_001270448.1:c.849+2T>A
NM_001033859.3:c.1011+2T>A
NM_001270447.2:c.1146+2T>A
NM_001270448.2:c.849+2T>A

Pathogenic

Met criteria codes 3
PM2_Supporting PVS1 PP4_Moderate
Not Met criteria codes 1
PP3

Evidence Links 0

Expert Panel

Criteria Specification Information

Criteria Specifications for this VCEP
Evidence submitted by expert panel
ACADVL VCEP
The c.1077+2T>A (NM_000018.4) variant in ACADVL occurs within the canonical splice donor site (+/- 1,2) of intron 10. It is predicted to cause skipping of biologically-relevant-exon 10/20, resulting in a frameshift leading to nonsense mediated decay in a gene in which loss-of-function is an established disease mechanism (PVS1: PMIDs 9973285, 11590124). This variant been reported in one individual with very long chain acyl-CoA dehydrogenase deficiency in the literature with decreased VLCAD enzyme activity (PP4_moderate; PMID: 30194637). This variant is absent from gnomAD v2.1.1 (PM2_Supporting). The ACADVL Variant Curation Expert Panel VCEP classified the variant as pathogenic based on PVS1, PM2_supporting, PP4_Moderate.
Met criteria codes
PM2_Supporting
Not in gnomAD
PVS1
This splice-site variant is predicted to break the wild-type donor site, leading to Exon 10 skipping and a resulting frameshift that creates a termination codon in Exon 11 well before the penultimate exon. Therefore, this is predicted to undergo NMD and meets PVS1.
PP4_Moderate
One proband displays 8% VLCAD residual activity, less than the required 20% for PP4_moderate
Not Met criteria codes
PP3
Not used for canonical splice-site variants meeting PVS1
Approved on: 2022-09-22
Published on: 2022-09-22
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