rs80358378
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3PP5
The NM_133433.4(NIPBL):c.3855+5G>A variant causes a splice donor 5th base, intron change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 3/3 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)
Consequence
NIPBL
NM_133433.4 splice_donor_5th_base, intron
NM_133433.4 splice_donor_5th_base, intron
Scores
2
Splicing: ADA: 0.9997
2
Clinical Significance
Conservation
PhyloP100: 7.23
Genes affected
NIPBL (HGNC:28862): (NIPBL cohesin loading factor) This gene encodes the homolog of the Drosophila melanogaster Nipped-B gene product and fungal Scc2-type sister chromatid cohesion proteins. The Drosophila protein facilitates enhancer-promoter communication of remote enhancers and plays a role in developmental regulation. It is also homologous to a family of chromosomal adherins with broad roles in sister chromatid cohesion, chromosome condensation, and DNA repair. The human protein has a bipartite nuclear targeting sequence and a putative HEAT repeat. Condensins, cohesins and other complexes with chromosome-related functions also contain HEAT repeats. Mutations in this gene result in Cornelia de Lange syndrome, a disorder characterized by dysmorphic facial features, growth delay, limb reduction defects, and cognitive disability. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
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 5-37003352-G-A is Pathogenic according to our data. Variant chr5-37003352-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 159098.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Likely_pathogenic=1}.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
NIPBL | NM_133433.4 | c.3855+5G>A | splice_donor_5th_base_variant, intron_variant | ENST00000282516.13 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
NIPBL | ENST00000282516.13 | c.3855+5G>A | splice_donor_5th_base_variant, intron_variant | 1 | NM_133433.4 | P1 | |||
NIPBL | ENST00000448238.2 | c.3855+5G>A | splice_donor_5th_base_variant, intron_variant | 1 | |||||
NIPBL | ENST00000652901.1 | c.3855+5G>A | splice_donor_5th_base_variant, intron_variant |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 22
GnomAD4 exome
Cov.:
22
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:1Uncertain:1
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
Cornelia de Lange syndrome 1 Pathogenic:1Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jan 18, 2021 | 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. Nucleotide substitutions within 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, but this prediction has not been confirmed by published transcriptional studies. This variant has not been reported in the literature in individuals with NIPBL-related conditions. ClinVar contains an entry for this variant (Variation ID: 159098). This variant is not present in population databases (ExAC no frequency). This sequence change falls in intron 16 of the NIPBL gene. It does not directly change the encoded amino acid sequence of the NIPBL protein. It affects a nucleotide within the consensus splice site of the intron. - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Genetic Services Laboratory, University of Chicago | Feb 08, 2013 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
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: -5
Find out detailed SpliceAI scores and Pangolin per-transcript scores at