chr4-158682399-T-C
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong
The NM_004453.4(ETFDH):āc.380T>Cā(p.Leu127Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,814 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 (ā ā ).
Frequency
Consequence
NM_004453.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 14 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ETFDH | NM_004453.4 | c.380T>C | p.Leu127Pro | missense_variant | Exon 3 of 13 | ENST00000511912.6 | NP_004444.2 | |
ETFDH | NM_001281737.2 | c.239T>C | p.Leu80Pro | missense_variant | Exon 2 of 12 | NP_001268666.1 | ||
ETFDH | NM_001281738.1 | c.197T>C | p.Leu66Pro | missense_variant | Exon 1 of 11 | NP_001268667.1 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251414Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135898
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461814Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 727210
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Multiple acyl-CoA dehydrogenase deficiency Pathogenic:1
This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 127 of the ETFDH protein (p.Leu127Pro). This variant is present in population databases (no rsID available, gnomAD 0.006%). This missense change has been observed in individual(s) with multiple acyl-CoA dehydrogenase deficiency (PMID: 25119904). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 203712). 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 ETFDH protein function with a positive predictive value of 80%. This variant disrupts the p.Leu127 amino acid residue in ETFDH. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 19249206). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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. -
not provided Pathogenic:1
p.Leu127Pro (CTC>CCC): c.380T>C missense change that is likely pathogenic. It has not been published as a mutation, nor has it been reported as a benign polymorphism to our knowledge. The L127P variant is a semi-conservative amino acid substitution, which may impact secondary protein structure as these residues differ in some properties. This substitution occurs at a position that is highly conserved across species. In silico analysis predicts this variant is probably damaging to the protein structure/function. Missense mutations at the same position (L127H and L127R) and in nearby residues (A117P, C118F, F128S, D130V, W131C, P137S) have been reported in association with glutaric aciduria II, supporting the functional importance of this region of the protein. Therefore, the L127P variant is a strong candidate for a pathogenic mutation, however the possibility that it is a benign variant cannot be excluded. The variant is found in ETFDH panel(s). -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at