rs786205603
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 4P and 5B. PP5_StrongBP4BS2
The NM_004006.3(DMD):c.3922-3C>T variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000109 in 1,097,019 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_004006.3 splice_region, splice_polypyrimidine_tract, intron
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
DMD | NM_004006.3 | c.3922-3C>T | splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant | ENST00000357033.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
DMD | ENST00000357033.9 | c.3922-3C>T | splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant | 1 | NM_004006.3 | P4 |
Frequencies
GnomAD3 genomes ? Cov.: 23
GnomAD4 exome AF: 0.0000109 AC: 12AN: 1097019Hom.: 0 Cov.: 30 AF XY: 0.00000828 AC XY: 3AN XY: 362513
GnomAD4 genome ? Cov.: 23
ClinVar
Submissions by phenotype
not provided Pathogenic:1
Likely pathogenic, flagged submission | research | Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center | - | - - |
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Feb 21, 2019 | Variant summary: DMD c.3922-3C>T alters a conserved nucleotide located close to a canonical splice site and therefore could affect mRNA splicing, leading to a significantly altered protein sequence. 5/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant was absent in 177050 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.3922-3C>T in individuals affected with Dystrophinopathies and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as uncertain significance. - |
Duchenne muscular dystrophy;C0878544:Cardiomyopathy;C0917713:Becker muscular dystrophy;na:Dystrophin deficiency Uncertain:1
Uncertain significance, no assertion criteria provided | clinical testing | Natera, Inc. | Sep 23, 2020 | - - |
Duchenne muscular dystrophy Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jul 06, 2022 | This sequence change falls in intron 28 of the DMD gene. It does not directly change the encoded amino acid sequence of the DMD protein. It affects a nucleotide within the consensus splice site. This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with DMD-related conditions. ClinVar contains an entry for this variant (Variation ID: 191243). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at