chr12-20855119-T-C

Position:

chr12-20855119-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_019844.4(SLCO1B3):c.176T>C(p.Phe59Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000261 in 1,611,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

SLCO1B3
NM_019844.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 7.26

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]

SLCO1B3 links:

SLCO1B3-SLCO1B7 (HGNC:):

SLCO1B3-SLCO1B7 links:

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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

MetaRNN computational evidence supports a deleterious effect, 0.935

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
SLCO1B3	NM_019844.4 linkuse as main transcript	c.176T>C	p.Phe59Ser	missense_variant	4/16	ENST00000381545.8	NP_062818.1
SLCO1B3-SLCO1B7	NM_001371097.1 linkuse as main transcript	c.176T>C	p.Phe59Ser	missense_variant	2/16		NP_001358026.1
SLCO1B3	NM_001349920.2 linkuse as main transcript	c.92T>C	p.Phe31Ser	missense_variant	2/14		NP_001336849.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLCO1B3	ENST00000381545.8 linkuse as main transcript	c.176T>C	p.Phe59Ser	missense_variant	4/16	2	NM_019844.4	ENSP00000370956	P1	Q9NPD5-1
SLCO1B3	ENST00000261196.6 linkuse as main transcript	c.176T>C	p.Phe59Ser	missense_variant	2/14	1		ENSP00000261196	P1	Q9NPD5-1
SLCO1B3	ENST00000540853.5 linkuse as main transcript	c.176T>C	p.Phe59Ser	missense_variant	3/8	1		ENSP00000442000
SLCO1B3	ENST00000545880.1 linkuse as main transcript	n.28T>C		non_coding_transcript_exon_variant	1/4	5

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000160

AC:

AN:

250584

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135454

show subpopulations

Gnomad AFR exome

AF:

0.0000617

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000265

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000253

AC:

AN:

1459608

Hom.:

Cov.:

AF XY:

0.0000248

AC XY:

AN XY:

726214

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000324

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74358

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000594

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 19, 2023

The c.176T>C (p.F59S) alteration is located in exon 3 (coding exon 2) of the SLCO1B3 gene. This alteration results from a T to C substitution at nucleotide position 176, causing the phenylalanine (F) at amino acid position 59 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Rotor syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 17, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.96

BayesDel_addAF

Pathogenic

0.31

BayesDel_noAF

Pathogenic

0.27

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.61

.;D;D;.;.

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

1.0

D;.;T;D;D

M_CAP

Uncertain

0.14

MetaRNN

Pathogenic

0.94

D;D;D;D;D

MetaSVM

Uncertain

0.25

MutationAssessor

Pathogenic

4.1

.;H;H;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.64

PROVEAN

Pathogenic

-7.7

D;D;D;D;D

REVEL

Pathogenic

0.79

Sift

Pathogenic

0.0

D;D;D;D;D

Sift4G

Pathogenic

0.0

D;D;D;D;D

Polyphen

1.0

.;D;D;.;.

Vest4

0.98, 0.98, 0.98, 0.98

MVP

0.53

MPC

0.029, 0.042

ClinPred

1.0

GERP RS

3.8

Varity_R

0.97

gMVP

0.78

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over