12-20855042-C-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP7BS2

The NM_019844.4(SLCO1B3):​c.99C>T​(p.Ala33=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000115 in 1,610,268 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00012 ( 2 hom. )

Consequence

SLCO1B3
NM_019844.4 synonymous

Scores

2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0590
Variant links:
Genes affected
SLCO1B3 (HGNC:10961): (solute carrier organic anion transporter family member 1B3) This gene encodes a liver-specific member of the organic anion transporter family. The encoded protein is a transmembrane receptor that mediates the sodium-independent uptake of endogenous and xenobiotic compounds and plays a critical role in bile acid and bilirubin transport. Mutations in this gene are a cause of Rotor type hyperbilirubinemia. Alternative splicing of this gene and the use of alternative promoters results in transcript variants encoding different isoforms that differ in their tissue specificity. [provided by RefSeq, Mar 2017]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.43).
BP7
Synonymous conserved (PhyloP=0.059 with no splicing effect.
BS2
High Homozygotes in GnomAdExome4 at 2 Digenic gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SLCO1B3NM_019844.4 linkuse as main transcriptc.99C>T p.Ala33= synonymous_variant 4/16 ENST00000381545.8 NP_062818.1
SLCO1B3-SLCO1B7NM_001371097.1 linkuse as main transcriptc.99C>T p.Ala33= synonymous_variant 2/16 NP_001358026.1
SLCO1B3NM_001349920.2 linkuse as main transcriptc.15C>T p.Ala5= synonymous_variant 2/14 NP_001336849.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SLCO1B3ENST00000381545.8 linkuse as main transcriptc.99C>T p.Ala33= synonymous_variant 4/162 NM_019844.4 ENSP00000370956 P1Q9NPD5-1
SLCO1B3ENST00000261196.6 linkuse as main transcriptc.99C>T p.Ala33= synonymous_variant 2/141 ENSP00000261196 P1Q9NPD5-1
SLCO1B3ENST00000540853.5 linkuse as main transcriptc.99C>T p.Ala33= synonymous_variant 3/81 ENSP00000442000
SLCO1B3ENST00000545880.1 linkuse as main transcript upstream_gene_variant 5

Frequencies

GnomAD3 genomes
AF:
0.0000724
AC:
11
AN:
151978
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00124
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000735
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000273
AC:
68
AN:
249344
Hom.:
0
AF XY:
0.000349
AC XY:
47
AN XY:
134728
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000177
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00143
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000159
Gnomad OTH exome
AF:
0.000164
GnomAD4 exome
AF:
0.000119
AC:
174
AN:
1458290
Hom.:
2
Cov.:
30
AF XY:
0.000165
AC XY:
120
AN XY:
725386
show subpopulations
Gnomad4 AFR exome
AF:
0.0000301
Gnomad4 AMR exome
AF:
0.000136
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00134
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000369
Gnomad4 OTH exome
AF:
0.0000665
GnomAD4 genome
AF:
0.0000724
AC:
11
AN:
151978
Hom.:
0
Cov.:
32
AF XY:
0.0000809
AC XY:
6
AN XY:
74210
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00124
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000735
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000181
Hom.:
0
Bravo
AF:
0.0000642
EpiCase
AF:
0.000164
EpiControl
AF:
0.000237

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Rotor syndrome Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingIllumina Laboratory Services, IlluminaApr 27, 2017This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.43
CADD
Benign
9.7
DANN
Benign
0.42

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs144143469; hg19: chr12-21007976; API