chr19-16831648-G-A
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_ModeratePM2PP3_Strong
The NM_001297595.2(SIN3B):c.381+1G>A variant causes a splice donor change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
SIN3B
NM_001297595.2 splice_donor
NM_001297595.2 splice_donor
Scores
2
2
3
Splicing: ADA: 0.9999
2
Clinical Significance
Conservation
PhyloP100: 8.69
Genes affected
SIN3B (HGNC:19354): (SIN3 transcription regulator family member B) Predicted to enable transcription corepressor activity. Predicted to be involved in histone deacetylation; negative regulation of transcription by RNA polymerase II; and striated muscle tissue development. Predicted to be located in nucleus. Predicted to be part of Sin3 complex. Predicted to be active in chromatin. [provided by Alliance of Genome Resources, Apr 2022]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
PVS1
?
Splicing variant, NOT destroyed by nmd, known LOF gene, truncates exone, which is 0.04509284 fraction of the gene. Cryptic splice site detected, with MaxEntScore 6.6, offset of 42, new splice context is: cgaGTatgt. 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: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SIN3B | NM_001297595.2 | c.381+1G>A | splice_donor_variant | ENST00000248054.10 | |||
SIN3B | NM_015260.4 | c.381+1G>A | splice_donor_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SIN3B | ENST00000248054.10 | c.381+1G>A | splice_donor_variant | 1 | NM_001297595.2 | P1 | |||
SIN3B | ENST00000379803.5 | c.381+1G>A | splice_donor_variant | 1 | |||||
SIN3B | ENST00000596802.5 | c.381+1G>A | splice_donor_variant | 1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jul 27, 2022 | Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. This variant has not been reported in the literature in individuals affected with SIN3B-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change affects a donor splice site in intron 3 of the SIN3B 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), however the current clinical and genetic evidence is not sufficient to establish whether loss-of-function variants in SIN3B cause disease. 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. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Uncertain
T
BayesDel_noAF
Benign
Cadd
Pathogenic
Dann
Benign
Eigen
Pathogenic
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
MutationTaster
Benign
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_DG_spliceai
Position offset: 41
DS_DL_spliceai
Position offset: -1
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.