NM_000017.4:c.1138C>T
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong
The NM_000017.4(ACADS):c.1138C>T(p.Arg380Trp) variant causes a missense change. The variant allele was found at a frequency of 0.0000378 in 1,612,944 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 Likely pathogenic (★★).
Frequency
Consequence
NM_000017.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 14 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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ACADS | ENST00000242592.9 | c.1138C>T | p.Arg380Trp | missense_variant | Exon 10 of 10 | 1 | NM_000017.4 | ENSP00000242592.4 | ||
ACADS | ENST00000411593.2 | c.1126C>T | p.Arg376Trp | missense_variant | Exon 10 of 10 | 2 | ENSP00000401045.2 |
Frequencies
GnomAD3 genomes AF: 0.0000394 AC: 6AN: 152228Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000927 AC: 23AN: 248232Hom.: 0 AF XY: 0.0000963 AC XY: 13AN XY: 135028
GnomAD4 exome AF: 0.0000377 AC: 55AN: 1460716Hom.: 0 Cov.: 33 AF XY: 0.0000385 AC XY: 28AN XY: 726664
GnomAD4 genome AF: 0.0000394 AC: 6AN: 152228Hom.: 0 Cov.: 33 AF XY: 0.0000538 AC XY: 4AN XY: 74374
ClinVar
Submissions by phenotype
Deficiency of butyryl-CoA dehydrogenase Pathogenic:12
The c.1138C>T;p.(Arg380Trp) missense variant has been observed in affected individual(s) and ClinVar contains an entry for this variant (Clinvar ID: 3837; PMID: 29678161; 24485985; 22424739; 16926354; 11134486) - PS4. Well-established in vitro or in vivo functional studies supportive of a damaging effect on the gene or gene product (PMID: 24485985) - PS3_supporting. The variant is present at low allele frequencies population databases (rs28940875 – gnomAD 0.0003941%; ABraOM no frequency - http://abraom.ib.usp.br/) - PM2_supporting. The p.(Arg380Trp) was detected in trans with a pathogenic variant (PMID: 24485985; 22424739; 16926354) - PM3. Multiple lines of computational evidence support a deleterious effect on the gene or gene product - PP3. In summary, the currently available evidence indicates that the variant is likely pathogenic. -
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This variant was identified as compound heterozygous. -
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Variant summary: ACADS c.1138C>T (p.Arg380Trp) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 9.3e-05 in 248232 control chromosomes (gnomAD). c.1138C>T has been reported in the literature in multiple individuals affected with short-chain acyl-CoA dehydrogenase (SCAD) deficiency (examples: Bok_2003, Edhager_2014, Navarrete_2019). These data indicate that the variant is very likely to be associated with disease. Multiple publications have reported experimental evidence that this variant changes the normal protein function (examples: Edhager_2014, Bok_2003). The following publications have been ascertained in the context of this evaluation (PMID: 24485985, 30626930, 18523805, 14595061). Ten submitters have cited clinical-significance assessments for this variant to ClinVar after 2014. All submitters classified the variant as pathogenic/likely pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -
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This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 380 of the ACADS protein (p.Arg380Trp). This variant is present in population databases (rs28940875, gnomAD 0.05%). This missense change has been observed in individuals with SCAD deficiency (PMID: 11134486, 14595061, 16906473, 16926354, 22424739, 24485985). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 3837). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on ACADS protein function. Experimental studies have shown that this missense change affects ACADS function (PMID: 18523805). For these reasons, this variant has been classified as Pathogenic. -
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not provided Pathogenic:1
Functional studies found R380W is associated with no detectable ACADS enzyme activity (Corydon et al., 2001); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Previously reported as R356W due to the use of alternate nomenclature; This variant is associated with the following publications: (PMID: 18523805, 14595061, 21483766, 16906473, 29678161, 24485985, 11134486, 22424739, 19800078, 16546179, 16926354, 32253862, 31589614, 32710939, 36499071, 33726816) -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at