chr2-233771328-C-G

Variant names:

• chr2-233771328-C-G
• rs11888492
• ENST00000360418.4:c.*1767C>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000360418.4(UGT1A1):​c.*1767C>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.182 in 151,958 control chromosomes in the GnomAD database, including 3,662 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 0.18 (3661 hom., cov: 31)
  • Exomes 𝑓: 0.036 (1 hom.)
• Consequence: UGT1A1 ENST00000360418.4 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.447
• Publications: 12 publications found

Genes affected

UGT1A1 (HGNC:12530): (UDP glucuronosyltransferase family 1 member A1) 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 preferred substrate of this enzyme is bilirubin, although it also has moderate activity with simple phenols, flavones, and C18 steroids. Mutations in this gene result in Crigler-Najjar syndromes types I and II and in Gilbert syndrome. [provided by RefSeq, Jul 2008]

UGT1A4 (HGNC:12536): (UDP glucuronosyltransferase family 1 member A4) 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. This enzyme has some glucuronidase activity towards bilirubin, although is is more active on amines, steroids, and sapogenins. [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]

UGT1A3 (HGNC:12535): (UDP glucuronosyltransferase family 1 member A3) 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. Substrates of this enzyme include estrone, 2-hydroxyestrone, and metabolites of benzo alpha-pyrene. [provided by RefSeq, Jul 2008]

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]

UGT1A (HGNC:12529):

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.367 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UGT1A4	NM_007120.3	c.1308-934C>G		intron_variant	Intron 4 of 4	ENST00000373409.8	NP_009051.1
UGT1A5	NM_019078.2	c.1308-934C>G		intron_variant	Intron 4 of 4	ENST00000373414.4	NP_061951.1
UGT1A3	NM_019093.4	c.1308-934C>G		intron_variant	Intron 4 of 4	ENST00000482026.6	NP_061966.1
UGT1A1	NM_000463.3	c.1305-934C>G		intron_variant	Intron 4 of 4	ENST00000305208.10	NP_000454.1
UGT1A6	NM_001072.4	c.1302-934C>G		intron_variant	Intron 4 of 4	ENST00000305139.11	NP_001063.2
UGT1A10	NM_019075.4	c.1296-934C>G		intron_variant	Intron 4 of 4	ENST00000344644.10	NP_061948.1
UGT1A8	NM_019076.5	c.1296-934C>G		intron_variant	Intron 4 of 4	ENST00000373450.5	NP_061949.3
UGT1A7	NM_019077.3	c.1296-934C>G		intron_variant	Intron 4 of 4	ENST00000373426.4	NP_061950.2
UGT1A9	NM_021027.3	c.1296-934C>G		intron_variant	Intron 4 of 4	ENST00000354728.5	NP_066307.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UGT1A4	ENST00000373409.8	c.1308-934C>G		intron_variant	Intron 4 of 4	1	NM_007120.3	ENSP00000362508.4
UGT1A5	ENST00000373414.4	c.1308-934C>G		intron_variant	Intron 4 of 4	1	NM_019078.2	ENSP00000362513.3
UGT1A3	ENST00000482026.6	c.1308-934C>G		intron_variant	Intron 4 of 4	1	NM_019093.4	ENSP00000418532.1
UGT1A1	ENST00000305208.10	c.1305-934C>G		intron_variant	Intron 4 of 4	1	NM_000463.3	ENSP00000304845.5
UGT1A6	ENST00000305139.11	c.1302-934C>G		intron_variant	Intron 4 of 4	1	NM_001072.4	ENSP00000303174.6
UGT1A10	ENST00000344644.10	c.1296-934C>G		intron_variant	Intron 4 of 4	1	NM_019075.4	ENSP00000343838.5
UGT1A9	ENST00000354728.5	c.1296-934C>G		intron_variant	Intron 4 of 4	1	NM_021027.3	ENSP00000346768.4
UGT1A7	ENST00000373426.4	c.1296-934C>G		intron_variant	Intron 4 of 4	1	NM_019077.3	ENSP00000362525.3
UGT1A8	ENST00000373450.5	c.1296-934C>G		intron_variant	Intron 4 of 4	1	NM_019076.5	ENSP00000362549.4

Frequencies

GnomAD3 genomes AF: 0.182 AC: 27632 AN: 151756 Hom.: 3647 Cov.: 31

Gnomad AFR AF: 0.371

Gnomad AMI AF: 0.0418

Gnomad AMR AF: 0.110

Gnomad ASJ AF: 0.152

Gnomad EAS AF: 0.112

Gnomad SAS AF: 0.165

Gnomad FIN AF: 0.111

Gnomad MID AF: 0.123

Gnomad NFE AF: 0.105

Gnomad OTH AF: 0.161

GnomAD4 exome AF: 0.0357 AC: 3 AN: 84 Hom.: 1 Cov.: 0 AF XY: 0.0484 AC XY: 3 AN XY: 62

African (AFR) AC: 0 AN: 0

American (AMR) AF: 0.00 AC: 0 AN: 2

Ashkenazi Jewish (ASJ) AC: 0 AN: 0

East Asian (EAS) AC: 0 AN: 0

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AF: 0.0909 AC: 2 AN: 22

Middle Eastern (MID) AC: 0 AN: 0

European-Non Finnish (NFE) AF: 0.0185 AC: 1 AN: 54

Other (OTH) AF: 0.00 AC: 0 AN: 6

GnomAD4 genome AF: 0.182 AC: 27687 AN: 151874 Hom.: 3661 Cov.: 31 AF XY: 0.179 AC XY: 13262 AN XY: 74202

African (AFR) AF: 0.372 AC: 15352 AN: 41310

American (AMR) AF: 0.110 AC: 1683 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.152 AC: 527 AN: 3470

East Asian (EAS) AF: 0.112 AC: 580 AN: 5170

South Asian (SAS) AF: 0.164 AC: 786 AN: 4806

European-Finnish (FIN) AF: 0.111 AC: 1176 AN: 10554

Middle Eastern (MID) AF: 0.133 AC: 39 AN: 294

European-Non Finnish (NFE) AF: 0.105 AC: 7156 AN: 67974

Other (OTH) AF: 0.166 AC: 350 AN: 2106

Alfa AF: 0.0546 Hom.: 61

Bravo AF: 0.188

Asia WGS AF: 0.163 AC: 568 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.89
DANN	Benign	0.68
PhyloP100		-0.45
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs11888492; hg19: chr2-234679974;