rs863225193
Variant summary
Our verdict is Pathogenic. Variant got 22 ACMG points: 22P and 0B. PVS1PM2PP3_StrongPP5_Very_Strong
The NM_001382391.1(CSPP1):c.1697+1G>T variant causes a splice donor change. The variant allele was found at a frequency of 0.0000025 in 1,599,816 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)
Exomes 𝑓: 0.0000021 ( 0 hom. )
Consequence
CSPP1
NM_001382391.1 splice_donor
NM_001382391.1 splice_donor
Scores
5
1
1
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 3.73
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 8-67118822-G-T is Pathogenic according to our data. Variant chr8-67118822-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 217647.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-67118822-G-T is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CSPP1 | NM_001382391.1 | c.1697+1G>T | splice_donor_variant | ENST00000678616.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CSPP1 | ENST00000678616.1 | c.1697+1G>T | splice_donor_variant | NM_001382391.1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000658 AC: 1AN: 152070Hom.: 0 Cov.: 32
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GnomAD4 exome AF: 0.00000207 AC: 3AN: 1447746Hom.: 0 Cov.: 27 AF XY: 0.00000139 AC XY: 1AN XY: 721102
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GnomAD4 genome ? AF: 0.00000658 AC: 1AN: 152070Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74286
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ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Joubert syndrome 21 Pathogenic:2
Pathogenic, criteria provided, single submitter | research | UW Hindbrain Malformation Research Program, University of Washington | Feb 23, 2015 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Feb 22, 2022 | - - |
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
Pathogenic
D
MutationTaster
Benign
D;D;D
GERP RS
Splicing
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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