rs587777142
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Variant summary
Our verdict is Pathogenic. Variant got 22 ACMG points: 22P and 0B. PVS1PM2PP3_StrongPP5_Very_Strong
The NM_001382391.1(CSPP1):c.2968+1G>A variant causes a splice donor change. The variant allele was found at a frequency of 0.00000657 in 152,144 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Consequence
CSPP1
NM_001382391.1 splice_donor
NM_001382391.1 splice_donor
Scores
4
2
1
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 6.87
Genes affected
CSPP1 (HGNC:26193): (centrosome and spindle pole associated protein 1) This gene encodes a centrosome and spindle pole associated protein. The encoded protein plays a role in cell-cycle progression and spindle organization, regulates cytokinesis, interacts with Nephrocystin 8 and is required for cilia formation. Mutations in this gene result in primary cilia abnormalities and classical Joubert syndrome. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Apr 2014]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 22 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: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
?
Variant 8-67172556-G-A is Pathogenic according to our data. Variant chr8-67172556-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 100670.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-67172556-G-A is described in Lovd as [Likely_pathogenic]. Variant chr8-67172556-G-A is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CSPP1 | NM_001382391.1 | c.2968+1G>A | splice_donor_variant | ENST00000678616.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CSPP1 | ENST00000678616.1 | c.2968+1G>A | splice_donor_variant | NM_001382391.1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152144Hom.: 0 Cov.: 32
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GnomAD4 exome Cov.: 29
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GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152144Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74308
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ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Joubert syndrome 21 Pathogenic:3
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jul 12, 2022 | For these reasons, this variant has been classified as Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. ClinVar contains an entry for this variant (Variation ID: 100670). Disruption of this splice site has been observed in individual(s) with Joubert syndrome (PMID: 24360808). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is not present in population databases (gnomAD no frequency). This sequence change affects a donor splice site in intron 23 of the CSPP1 gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in CSPP1 are known to be pathogenic (PMID: 24360807, 24360808). - |
Pathogenic, criteria provided, single submitter | research | UW Hindbrain Malformation Research Program, University of Washington | Feb 23, 2015 | - - |
Pathogenic, no assertion criteria provided | literature only | OMIM | Jan 02, 2014 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
MutationTaster
Benign
D;D;D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
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