2-218262745-C-T

Variant names:

• chr2-218262745-C-T
• rs201145373
• NM_170699.3:c.21C>T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_170699.3(GPBAR1):​c.21C>T​(p.Gly7Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000415 in 1,446,576 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: not found (cov: 32)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: GPBAR1 NM_170699.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.351

Genes affected

GPBAR1 (HGNC:19680): (G protein-coupled bile acid receptor 1) This gene encodes a member of the G protein-coupled receptor (GPCR) superfamily. This enzyme functions as a cell surface receptor for bile acids. Treatment of cells expressing this GPCR with bile acids induces the production of intracellular cAMP, activation of a MAP kinase signaling pathway, and internalization of the receptor. The receptor is implicated in the suppression of macrophage functions and regulation of energy homeostasis by bile acids. Alternative splicing results in multiple transcript variants encoding the same protein. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP7: Synonymous conserved (PhyloP=0.351 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GPBAR1	NM_170699.3	c.21C>T	p.Gly7Gly	synonymous_variant	Exon 2 of 2	ENST00000519574.2	NP_733800.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GPBAR1	ENST00000519574.2	c.21C>T	p.Gly7Gly	synonymous_variant	Exon 2 of 2	1	NM_170699.3	ENSP00000430202.1
GPBAR1	ENST00000479077.5	c.21C>T	p.Gly7Gly	synonymous_variant	Exon 2 of 2	2		ENSP00000430698.1
GPBAR1	ENST00000521462.1	c.21C>T	p.Gly7Gly	synonymous_variant	Exon 2 of 2	2		ENSP00000428824.1
GPBAR1	ENST00000522678.5	c.21C>T	p.Gly7Gly	synonymous_variant	Exon 2 of 2	2		ENSP00000430886.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000213 AC: 5 AN: 235114 Hom.: 0 AF XY: 0.0000156 AC XY: 2 AN XY: 128318

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000684

Gnomad FIN exome AF: 0.000106

Gnomad NFE exome AF: 0.00000938

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000415 AC: 6 AN: 1446576 Hom.: 0 Cov.: 31 AF XY: 0.00000418 AC XY: 3 AN XY: 717572

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: 0.0000118

Gnomad4 FIN exome AF: 0.0000591

Gnomad4 NFE exome AF: 0.00000181

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	5.5
DANN	Benign	0.58

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		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: rs201145373; hg19: chr2-219127468;