2-233694260-G-A

Position:

• chr2-233694260-G-A

Variant summary

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

The NM_001072.4(UGT1A6):​c.861+395G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.576 in 151,760 control chromosomes in the GnomAD database, including 25,440 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 0.58 (25440 hom., cov: 31)
• Consequence: UGT1A6 NM_001072.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.421

Genes affected

UGT1A6 (HGNC:12538): (UDP glucuronosyltransferase family 1 member A6) 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 is active on phenolic and planar compounds. Alternative splicing in the unique 5' end of this gene results in two transcript variants. [provided by RefSeq, Jul 2008]

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]

UGT1A7 (HGNC:12539): (UDP glucuronosyltransferase family 1 member A7) 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 moderate glucuronidase activity with phenols. [provided by RefSeq, Jul 2008]

UGT1A9 (HGNC:12541): (UDP glucuronosyltransferase family 1 member A9) 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 is active on phenols. [provided by RefSeq, Jul 2008]

(HGNC:):

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.623 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
UGT1A6	NM_001072.4	c.861+395G>A		intron_variant		ENST00000305139.11	NP_001063.2
UGT1A10	NM_019075.4	c.855+56883G>A		intron_variant		ENST00000344644.10	NP_061948.1
UGT1A8	NM_019076.5	c.856-72774G>A		intron_variant		ENST00000373450.5	NP_061949.3
UGT1A7	NM_019077.3	c.855+11468G>A		intron_variant		ENST00000373426.4	NP_061950.2
UGT1A9	NM_021027.3	c.855+21471G>A		intron_variant		ENST00000354728.5	NP_066307.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
UGT1A6	ENST00000305139.11	c.861+395G>A		intron_variant		1	NM_001072.4	ENSP00000303174	P1
UGT1A10	ENST00000344644.10	c.855+56883G>A		intron_variant		1	NM_019075.4	ENSP00000343838	P1
UGT1A9	ENST00000354728.5	c.855+21471G>A		intron_variant		1	NM_021027.3	ENSP00000346768	P1
UGT1A7	ENST00000373426.4	c.855+11468G>A		intron_variant		1	NM_019077.3	ENSP00000362525	P1
UGT1A8	ENST00000373450.5	c.856-72774G>A		intron_variant		1	NM_019076.5	ENSP00000362549	P1
	ENST00000439336.1	n.260-423C>T		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.576 AC: 87333 AN: 151646 Hom.: 25414 Cov.: 31

Gnomad AFR AF: 0.609

Gnomad AMI AF: 0.654

Gnomad AMR AF: 0.475

Gnomad ASJ AF: 0.531

Gnomad EAS AF: 0.425

Gnomad SAS AF: 0.644

Gnomad FIN AF: 0.675

Gnomad MID AF: 0.532

Gnomad NFE AF: 0.572

Gnomad OTH AF: 0.549

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

GnomAD4 genome AF: 0.576 AC: 87410 AN: 151760 Hom.: 25440 Cov.: 31 AF XY: 0.579 AC XY: 42911 AN XY: 74142

Gnomad4 AFR AF: 0.610

Gnomad4 AMR AF: 0.475

Gnomad4 ASJ AF: 0.531

Gnomad4 EAS AF: 0.425

Gnomad4 SAS AF: 0.642

Gnomad4 FIN AF: 0.675

Gnomad4 NFE AF: 0.572

Gnomad4 OTH AF: 0.551

Alfa AF: 0.560 Hom.: 23206

Bravo AF: 0.556

Asia WGS AF: 0.527 AC: 1834 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	2.2
DANN	Benign	0.37

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: rs7592624; hg19: chr2-234602906;