rs202078273
Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2PP3_StrongPP5
The NM_000017.4(ACADS):c.1054G>A(p.Ala352Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000329 in 1,612,928 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
Consequence
NM_000017.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000263 AC: 4AN: 152190Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000283 AC: 7AN: 246988Hom.: 0 AF XY: 0.0000297 AC XY: 4AN XY: 134660
GnomAD4 exome AF: 0.0000335 AC: 49AN: 1460738Hom.: 0 Cov.: 33 AF XY: 0.0000372 AC XY: 27AN XY: 726696
GnomAD4 genome AF: 0.0000263 AC: 4AN: 152190Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1AN XY: 74344
ClinVar
Submissions by phenotype
Deficiency of butyryl-CoA dehydrogenase Pathogenic:3Uncertain:2
PM2_P+PM3_VS+PP3+PP4 -
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This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 352 of the ACADS protein (p.Ala352Thr). This variant is present in population databases (rs202078273, gnomAD 0.004%). This missense change has been observed in individuals with biochemical features of short chain acyl-CoA dehydrogenase (SCAD) deficiency (PMID: 27051597, 30612563). ClinVar contains an entry for this variant (Variation ID: 432218). 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 ACADS 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. -
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not provided Uncertain:1
The A352T variant was identified in a patient with short chain acyl-CoA dehydrogenase (SCAD) deficiency who was homozygous for both A352T and for the common G209S variant which is a well studied variant known to confer susceptibility to develop SCAD deficiency (Rodolfo et al. 2016). The A352T variant is not observed at a significant frequency in large population cohorts (Lek et al., 2016; 1000 Genomes Consortium et al., 2015; Exome Variant Server). The A352T variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position that is conserved across species. In silico analysis predicts this variant is probably damaging to the protein structure/function. In summary, based on the currently available information, it is unclear whether the A352T variant is a pathogenic variant or a rare benign variant. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at