chr2-71564074-C-T
Variant summary
Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM2PM5PP3_StrongPP5
The NM_001130987.2(DYSF):c.2426C>T(p.Pro809Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,614,090 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P809R) has been classified as Pathogenic.
Frequency
Consequence
NM_001130987.2 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 9 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
DYSF | ENST00000410020.8 | c.2426C>T | p.Pro809Leu | missense_variant | Exon 24 of 56 | 1 | NM_001130987.2 | ENSP00000386881.3 | ||
DYSF | ENST00000258104.8 | c.2372C>T | p.Pro791Leu | missense_variant | Exon 24 of 55 | 1 | NM_003494.4 | ENSP00000258104.3 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152232Hom.: 0 Cov.: 33
GnomAD4 exome AF: 0.00000616 AC: 9AN: 1461858Hom.: 0 Cov.: 32 AF XY: 0.00000550 AC XY: 4AN XY: 727228
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152232Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1AN XY: 74374
ClinVar
Submissions by phenotype
Qualitative or quantitative defects of dysferlin Pathogenic:1
This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 791 of the DYSF protein (p.Pro791Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with DYSF-related conditions. ClinVar contains an entry for this variant (Variation ID: 566085). 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) indicates that this missense variant is expected to disrupt DYSF protein function with a positive predictive value of 95%. This variant disrupts the p.Pro791 amino acid residue in DYSF. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 10196377, 16996541, 29382405). 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 Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at