rs3732220

chr2-233718402-G-A

Variant summary

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

The NM_019078.2(UGT1A5):c.867+4544G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.101 in 152,230 control chromosomes in the GnomAD database, including 905 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 0.10 (905 hom., cov: 33)
• Consequence: UGT1A5 NM_019078.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0430

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]

UGT1A5 (HGNC:12537): (UDP glucuronosyltransferase family 1 member A5) 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. [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]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.195 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
UGT1A6	NM_001072.4	c.861+24537G>A		intron_variant		ENST00000305139.11
UGT1A10	NM_019075.4	c.856-48632G>A		intron_variant		ENST00000344644.10
UGT1A8	NM_019076.5	c.856-48632G>A		intron_variant		ENST00000373450.5
UGT1A7	NM_019077.3	c.855+35610G>A		intron_variant		ENST00000373426.4
UGT1A5	NM_019078.2	c.867+4544G>A		intron_variant		ENST00000373414.4
UGT1A9	NM_021027.3	c.855+45613G>A		intron_variant		ENST00000354728.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
UGT1A6	ENST00000305139.11	c.861+24537G>A		intron_variant		1	NM_001072.4	P1
UGT1A10	ENST00000344644.10	c.856-48632G>A		intron_variant		1	NM_019075.4	P1
UGT1A9	ENST00000354728.5	c.855+45613G>A		intron_variant		1	NM_021027.3	P1
UGT1A5	ENST00000373414.4	c.867+4544G>A		intron_variant		1	NM_019078.2	P1
UGT1A7	ENST00000373426.4	c.855+35610G>A		intron_variant		1	NM_019077.3	P1
UGT1A8	ENST00000373450.5	c.856-48632G>A		intron_variant		1	NM_019076.5	P1

Frequencies

GnomAD3 genomes AF: 0.101 AC: 15426 AN: 152112 Hom.: 901 Cov.: 33

Gnomad AFR AF: 0.104

Gnomad AMI AF: 0.00877

Gnomad AMR AF: 0.112

Gnomad ASJ AF: 0.102

Gnomad EAS AF: 0.206

Gnomad SAS AF: 0.196

Gnomad FIN AF: 0.0602

Gnomad MID AF: 0.123

Gnomad NFE AF: 0.0901

Gnomad OTH AF: 0.110

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

GnomAD4 genome AF: 0.101 AC: 15446 AN: 152230 Hom.: 905 Cov.: 33 AF XY: 0.102 AC XY: 7620 AN XY: 74434

Gnomad4 AFR AF: 0.104

Gnomad4 AMR AF: 0.112

Gnomad4 ASJ AF: 0.102

Gnomad4 EAS AF: 0.205

Gnomad4 SAS AF: 0.195

Gnomad4 FIN AF: 0.0602

Gnomad4 NFE AF: 0.0901

Gnomad4 OTH AF: 0.116

Alfa AF: 0.100 Hom.: 137

Bravo AF: 0.103

Asia WGS AF: 0.200 AC: 694 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
Cadd	Benign	7.9
Dann	Benign	0.72

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: rs3732220; hg19: chr2-234627048;