2-233640168-A-G

Position:

• chr2-233640168-A-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_019075.4(UGT1A10):​c.855+2791A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.224 in 152,114 control chromosomes in the GnomAD database, including 4,756 homozygotes. 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 0.22 (4756 hom., cov: 32)
• Consequence: UGT1A10 NM_019075.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0670

Genes affected

UGT1A10 (HGNC:12531): (UDP glucuronosyltransferase family 1 member A10) This gene encodes a UDP-glucuronosyltransferase, an enzyme of the glucuronidation pathway that transforms small lipophilic molecules, such as steroids, bilirubin, hormones, and drugs, into water-soluble, excretable metabolites. This gene is part of a complex locus that encodes several UDP-glucuronosyltransferases. The locus includes thirteen unique alternate first exons followed by four common exons. Four of the alternate first exons are considered pseudogenes. Each of the remaining nine 5' exons may be spliced to the four common exons, resulting in nine proteins with different N-termini and identical C-termini. Each first exon encodes the substrate binding site, and is regulated by its own promoter. The enzyme encoded by this gene has glucuronidase activity on mycophenolic acid, coumarins, and quinolines. [provided by RefSeq, Jul 2008]

UGT1A8 (HGNC:12540): (UDP glucuronosyltransferase family 1 member A8) This gene encodes a UDP-glucuronosyltransferase, an enzyme of the glucuronidation pathway that transforms small lipophilic molecules, such as steroids, bilirubin, hormones, and drugs, into water-soluble, excretable metabolites. This gene is part of a complex locus that encodes several UDP-glucuronosyltransferases. The locus includes thirteen unique alternate first exons followed by four common exons. Four of the alternate first exons are considered pseudogenes. Each of the remaining nine 5' exons may be spliced to the four common exons, resulting in nine proteins with different N-termini and identical C-termini. Each first exon encodes the substrate binding site, and is regulated by its own promoter. The enzyme encoded by this gene has glucuronidase activity with many substrates including coumarins, phenols, anthraquinones, flavones, and some opioids. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.96).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.369 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
UGT1A10	NM_019075.4	c.855+2791A>G		intron_variant		ENST00000344644.10	NP_061948.1
UGT1A8	NM_019076.5	c.855+21606A>G		intron_variant		ENST00000373450.5	NP_061949.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
UGT1A10	ENST00000344644.10	c.855+2791A>G		intron_variant		1	NM_019075.4	ENSP00000343838	P1
UGT1A8	ENST00000373450.5	c.855+21606A>G		intron_variant		1	NM_019076.5	ENSP00000362549	P1
UGT1A10	ENST00000373445.1	c.855+2791A>G		intron_variant		1		ENSP00000362544

Frequencies

GnomAD3 genomes AF: 0.224 AC: 34061 AN: 151996 Hom.: 4758 Cov.: 32

Gnomad AFR AF: 0.0767

Gnomad AMI AF: 0.431

Gnomad AMR AF: 0.195

Gnomad ASJ AF: 0.333

Gnomad EAS AF: 0.0278

Gnomad SAS AF: 0.383

Gnomad FIN AF: 0.349

Gnomad MID AF: 0.307

Gnomad NFE AF: 0.296

Gnomad OTH AF: 0.218

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

GnomAD4 genome AF: 0.224 AC: 34060 AN: 152114 Hom.: 4756 Cov.: 32 AF XY: 0.230 AC XY: 17066 AN XY: 74336

Gnomad4 AFR AF: 0.0768

Gnomad4 AMR AF: 0.194

Gnomad4 ASJ AF: 0.333

Gnomad4 EAS AF: 0.0281

Gnomad4 SAS AF: 0.383

Gnomad4 FIN AF: 0.349

Gnomad4 NFE AF: 0.296

Gnomad4 OTH AF: 0.217

Alfa AF: 0.256 Hom.: 876

Bravo AF: 0.201

Asia WGS AF: 0.195 AC: 678 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
CADD	Benign	3.5
DANN	Benign	0.46

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: rs2741034; hg19: chr2-234548814;