chr12-21172735-G-A

Position:

• chr12-21172735-G-A

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_006446.5(SLCO1B1):​c.170G>A​(p.Arg57Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000222 in 1,613,336 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R57W) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.00018 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00023 (1 hom.)
• Consequence: SLCO1B1 NM_006446.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 2.96

Genes affected

SLCO1B1 (HGNC:10959): (solute carrier organic anion transporter family member 1B1) 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 numerous endogenous compounds including bilirubin, 17-beta-glucuronosyl estradiol and leukotriene C4. This protein is also involved in the removal of drug compounds such as statins, bromosulfophthalein and rifampin from the blood into the hepatocytes. Polymorphisms in the gene encoding this protein are associated with impaired transporter function. [provided by RefSeq, Mar 2009]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.032773435).
• BS2: High AC in GnomAd4 at 28 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLCO1B1	NM_006446.5	c.170G>A	p.Arg57Gln	missense_variant	3/15	ENST00000256958.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLCO1B1	ENST00000256958.3	c.170G>A	p.Arg57Gln	missense_variant	3/15	1	NM_006446.5	P1

Frequencies

GnomAD3 genomes AF: 0.000184 AC: 28 AN: 152086 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000197

Gnomad ASJ AF: 0.00434

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00166

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000398 AC: 100 AN: 250998 Hom.: 1 AF XY: 0.000450 AC XY: 61 AN XY: 135676

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000579

Gnomad ASJ exome AF: 0.00526

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00114

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000705

Gnomad OTH exome AF: 0.000327

GnomAD4 exome AF: 0.000226 AC: 330 AN: 1461134 Hom.: 1 Cov.: 31 AF XY: 0.000285 AC XY: 207 AN XY: 726920

Gnomad4 AFR exome AF: 0.0000598

Gnomad4 AMR exome AF: 0.0000447

Gnomad4 ASJ exome AF: 0.00532

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00123

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000387

Gnomad4 OTH exome AF: 0.000563

GnomAD4 genome AF: 0.000184 AC: 28 AN: 152202 Hom.: 0 Cov.: 32 AF XY: 0.000175 AC XY: 13 AN XY: 74418

Gnomad4 AFR AF: 0.0000482

Gnomad4 AMR AF: 0.000196

Gnomad4 ASJ AF: 0.00434

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00166

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000360 Hom.: 0

Bravo AF: 0.000170

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000349 AC: 3

ExAC AF: 0.000354 AC: 43

Asia WGS AF: 0.000577 AC: 2 AN: 3478

EpiCase AF: 0.000218

EpiControl AF: 0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Rotor syndrome Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Mar 29, 2022	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This 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). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant 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
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.24
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.17	T
Eigen	Pathogenic	0.72
Eigen_PC	Uncertain	0.58
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.95	D
M_CAP	Benign	0.038	D
MetaRNN	Benign	0.033	T
MetaSVM	Uncertain	0.051	D
MutationAssessor	Pathogenic	3.8	H
MutationTaster	Benign	0.99	D
PrimateAI	Benign	0.46	T
PROVEAN	Uncertain	-3.8	D
REVEL	Uncertain	0.41
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0040	D
Polyphen		1.0	D
Vest4		0.51
MVP		0.45
MPC		0.068
ClinPred		0.26	T
GERP RS		3.4
Varity_R		0.86
gMVP		0.63

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		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

Other links and lift over

dbSNP: rs61760182; hg19: chr12-21325669;