rs1057516801
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Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PM2PP3_StrongPP5_Moderate
The NM_000016.6(ACADM):c.216+1G>A variant causes a splice donor change. The variant allele was found at a frequency of 0.00000186 in 1,612,338 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000014 ( 0 hom. )
Consequence
ACADM
NM_000016.6 splice_donor
NM_000016.6 splice_donor
Scores
5
1
1
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 6.33
Genes affected
ACADM (HGNC:89): (acyl-CoA dehydrogenase medium chain) This gene encodes the medium-chain specific (C4 to C12 straight chain) acyl-Coenzyme A dehydrogenase. The homotetramer enzyme catalyzes the initial step of the mitochondrial fatty acid beta-oxidation pathway. Defects in this gene cause medium-chain acyl-CoA dehydrogenase deficiency, a disease characterized by hepatic dysfunction, fasting hypoglycemia, and encephalopathy, which can result in infantile death. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 16 ACMG points.
PVS1
?
Splicing variant, LoF is a know mechanism of disease, Cryptic splice site detected, with MaxEntScore 4.9, offset of 4, new splice context is: tagGTatat. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
?
Variant 1-75732742-G-A is Pathogenic according to our data. Variant chr1-75732742-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 2829096.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ACADM | NM_000016.6 | c.216+1G>A | splice_donor_variant | ENST00000370841.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ACADM | ENST00000370841.9 | c.216+1G>A | splice_donor_variant | 1 | NM_000016.6 | P4 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152208Hom.: 0 Cov.: 33
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GnomAD4 exome AF: 0.00000137 AC: 2AN: 1460130Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1AN XY: 726492
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GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152208Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 74354
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ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Medium-chain acyl-coenzyme A dehydrogenase deficiency Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jul 28, 2023 | This sequence change affects a donor splice site in intron 3 of the ACADM gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in ACADM are known to be pathogenic (PMID: 16121256, 20434380). This variant is not present in population databases (gnomAD no frequency). Disruption of this splice site has been observed in individual(s) with medium-chain acyl-coenzyme A dehydrogenase deficiency (PMID: 22630369). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
MutationTaster
Benign
D;D;D;D;D
GERP RS
Splicing
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Calibrated prediction
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dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_DL_spliceai
Position offset: -1
Find out detailed SpliceAI scores and Pangolin per-transcript scores at