rs1553546495
Positions:
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PVS1_ModeratePM2PP3_ModeratePP5_Very_Strong
The NM_003742.4(ABCB11):c.3213+1del variant causes a splice donor change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 1/1 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★★).
Frequency
Genomes: not found (cov: 32)
Consequence
ABCB11
NM_003742.4 splice_donor
NM_003742.4 splice_donor
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 7.51
Genes affected
ABCB11 (HGNC:42): (ATP binding cassette subfamily B member 11) The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the MDR/TAP subfamily. Members of the MDR/TAP subfamily are involved in multidrug resistance. The protein encoded by this gene is the major canalicular bile salt export pump in man. Mutations in this gene cause a form of progressive familial intrahepatic cholestases which are a group of inherited disorders with severe cholestatic liver disease from early infancy. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 14 ACMG points.
PVS1
?
Splicing variant, NOT destroyed by nmd, known LOF gene, truncates exone, which is 0.029306782 fraction of the gene. Cryptic splice site detected, with MaxEntScore 11, offset of 0 (no position change), new splice context is: atgGTaagt. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it 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 2-168932375-AC-A is Pathogenic according to our data. Variant chr2-168932375-AC-A is described in ClinVar as [Pathogenic]. Clinvar id is 521014.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ABCB11 | NM_003742.4 | c.3213+1del | splice_donor_variant | ENST00000650372.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ABCB11 | ENST00000650372.1 | c.3213+1del | splice_donor_variant | NM_003742.4 | P1 | ||||
ABCB11 | ENST00000649448.1 | c.1530+1del | splice_donor_variant | ||||||
ABCB11 | ENST00000439188.1 | c.*1683+1del | splice_donor_variant, NMD_transcript_variant | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 29
GnomAD4 exome
Cov.:
29
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Inborn genetic diseases Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Mar 16, 2016 | - - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jun 01, 2020 | For these reasons, this variant has been classified as Pathogenic. Loss-of-function variants in ABCB11 are known to be pathogenic (PMID: 18395098, 20232290). 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 been observed in individual(s) with ABCB11-related conditions (PMID: 10579978, 26516723). This variant is also known as del1 at 3213 and c.3213+1delG in the literature. ClinVar contains an entry for this variant (Variation ID: 521014). This variant is not present in population databases (ExAC no frequency). This sequence change creates a premature translational stop signal (p.Asp1072Thrfs*25) in the ABCB11 gene. It is expected to result in an absent or disrupted protein product. - |
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_DG_spliceai
Position offset: 3
DS_DL_spliceai
Position offset: 2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at