12-20902672-G-T

Position:

• chr12-20902672-G-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_019844.4(SLCO1B3):​c.1865+1205G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000658 in 152,074 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.000066 (0 hom., cov: 31)
• Consequence: SLCO1B3 NM_019844.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.51

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-SLCO1B7 (HGNC:54403): (SLCO1B3-SLCO1B7 readthrough) This locus represents naturally occurring readthrough transcription between the neighboring SLCO1B3 (solute carrier organic anion transporter family member 1B3) and SLCO1B7 (solute carrier organic anion transporter family member 1B7 (putative)) genes on chromosome 12. The readthrough transcript encodes a protein that shares sequence identity with both the upstream and downstream genes. [provided by RefSeq, Jun 2019]

LOC124902894 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.04).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLCO1B3	NM_019844.4	c.1865+1205G>T		intron_variant		ENST00000381545.8	NP_062818.1
SLCO1B3-SLCO1B7	NM_001371097.1	c.1865+1205G>T		intron_variant			NP_001358026.1
SLCO1B3	NM_001349920.2	c.1781+1205G>T		intron_variant			NP_001336849.1
LOC124902894	XM_047429949.1	c.-58+1205G>T		intron_variant			XP_047285905.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLCO1B3	ENST00000381545.8	c.1865+1205G>T		intron_variant		2	NM_019844.4	ENSP00000370956.4
SLCO1B3-SLCO1B7	ENST00000540229.1	c.1865+1205G>T		intron_variant		2		ENSP00000441269.1
SLCO1B3	ENST00000261196.6	c.1865+1205G>T		intron_variant		1		ENSP00000261196.2
SLCO1B3-SLCO1B7	ENST00000381541.7	c.359+44101G>T		intron_variant		2		ENSP00000370952.3

Frequencies

GnomAD3 genomes AF: 0.0000658 AC: 10 AN: 151956 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000484

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000656

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0000658 AC: 10 AN: 152074 Hom.: 0 Cov.: 31 AF XY: 0.000108 AC XY: 8 AN XY: 74320

Gnomad4 AFR AF: 0.0000483

Gnomad4 AMR AF: 0.0000655

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000735

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000238 Hom.: 2498

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.14
DANN	Benign	0.059

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: rs4762803; hg19: chr12-21055606;