rs587777381
Variant summary
Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP3PP5
The NM_017890.5(VPS13B):c.5983+2dup variant causes a splice donor change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,458,402 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )
Consequence
VPS13B
NM_017890.5 splice_donor
NM_017890.5 splice_donor
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 7.75
Genes affected
VPS13B (HGNC:2183): (vacuolar protein sorting 13 homolog B) This gene encodes a potential transmembrane protein that may function in vesicle-mediated transport and sorting of proteins within the cell. This protein may play a role in the development and the function of the eye, hematological system, and central nervous system. Mutations in this gene have been associated with Cohen syndrome. Multiple splice variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 12 ACMG points.
PVS1
?
Splicing variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
?
Variant 8-99642499-G-GT is Pathogenic according to our data. Variant chr8-99642499-G-GT is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 132794.We mark this variant Likely_pathogenic, oryginal submissions are: {Pathogenic=2, Likely_pathogenic=1, Uncertain_significance=1}.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
VPS13B | NM_017890.5 | c.5983+2dup | splice_donor_variant | ENST00000358544.7 | |||
VPS13B | NM_152564.5 | c.5908+2dup | splice_donor_variant | ENST00000357162.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
VPS13B | ENST00000357162.7 | c.5908+2dup | splice_donor_variant | 1 | NM_152564.5 | P1 | |||
VPS13B | ENST00000358544.7 | c.5983+2dup | splice_donor_variant | 1 | NM_017890.5 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1458402Hom.: 0 Cov.: 30 AF XY: 0.00000276 AC XY: 2AN XY: 725532
GnomAD4 exome
AF:
AC:
2
AN:
1458402
Hom.:
Cov.:
30
AF XY:
AC XY:
2
AN XY:
725532
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
Bravo
AF:
ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:4Uncertain:1
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
Cohen syndrome Pathogenic:3Uncertain:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jun 07, 2023 | This variant has been observed in individual(s) with clinical features of Cohen syndrome (PMID: 24311531). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. 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. 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 may disrupt the consensus splice site. Studies have shown that this variant alters VPS13B gene expression (PMID: 24311531). ClinVar contains an entry for this variant (Variation ID: 132794). This variant is also known as IVS34+2T_+3AinsT. This variant is not present in population databases (gnomAD no frequency). This sequence change falls in intron 34 of the VPS13B gene. It does not directly change the encoded amino acid sequence of the VPS13B protein. It affects a nucleotide within the consensus splice site. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Counsyl | May 19, 2017 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Institute of Human Genetics, University of Leipzig Medical Center | Jun 09, 2022 | _x000D_ Criteria applied: PVS1, PM3_STR, PM2_SUP, PP4 - |
Pathogenic, no assertion criteria provided | literature only | OMIM | Feb 01, 2014 | - - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden | Nov 03, 2021 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_DL_spliceai
Position offset: -1
Find out detailed SpliceAI scores and Pangolin per-transcript scores at