NM_001072.4:c.861+3324C>T

Variant names:

• chr2-233697189-C-T
• rs1604144
• NM_001072.4:c.861+3324C>T

Variant summary

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

The NM_001072.4(UGT1A6):​c.861+3324C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.326 in 151,890 control chromosomes in the GnomAD database, including 8,582 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 0.33 (8582 hom., cov: 32)
• Consequence: UGT1A6 NM_001072.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.305
• Publications: 14 publications found

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]

UGT1A (HGNC:12529):

ENSG00000224814 (HGNC:):

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.435 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001072.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UGT1A6	NM_001072.4	MANE Select	c.861+3324C>T		intron	N/A	NP_001063.2
	UGT1A10	NM_019075.4	MANE Select	c.855+59812C>T		intron	N/A	NP_061948.1	Q5DT02
	UGT1A8	NM_019076.5	MANE Select	c.856-69845C>T		intron	N/A	NP_061949.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UGT1A6	ENST00000305139.11	TSL:1 MANE Select	c.861+3324C>T		intron	N/A	ENSP00000303174.6	P19224-1
	UGT1A10	ENST00000344644.10	TSL:1 MANE Select	c.855+59812C>T		intron	N/A	ENSP00000343838.5	Q9HAW8-1
	UGT1A9	ENST00000354728.5	TSL:1 MANE Select	c.855+24400C>T		intron	N/A	ENSP00000346768.4	O60656-1

Frequencies

GnomAD3 genomes AF: 0.326 AC: 49466 AN: 151774 Hom.: 8568 Cov.: 32

Gnomad AFR AF: 0.440

Gnomad AMI AF: 0.203

Gnomad AMR AF: 0.273

Gnomad ASJ AF: 0.202

Gnomad EAS AF: 0.255

Gnomad SAS AF: 0.263

Gnomad FIN AF: 0.253

Gnomad MID AF: 0.185

Gnomad NFE AF: 0.299

Gnomad OTH AF: 0.293

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

GnomAD4 genome AF: 0.326 AC: 49533 AN: 151890 Hom.: 8582 Cov.: 32 AF XY: 0.319 AC XY: 23663 AN XY: 74242

African (AFR) AF: 0.441 AC: 18242 AN: 41412

American (AMR) AF: 0.273 AC: 4163 AN: 15266

Ashkenazi Jewish (ASJ) AF: 0.202 AC: 702 AN: 3468

East Asian (EAS) AF: 0.255 AC: 1321 AN: 5174

South Asian (SAS) AF: 0.261 AC: 1258 AN: 4814

European-Finnish (FIN) AF: 0.253 AC: 2663 AN: 10520

Middle Eastern (MID) AF: 0.188 AC: 55 AN: 292

European-Non Finnish (NFE) AF: 0.299 AC: 20323 AN: 67924

Other (OTH) AF: 0.295 AC: 621 AN: 2108

Alfa AF: 0.301 Hom.: 10799

Bravo AF: 0.330

Asia WGS AF: 0.265 AC: 920 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	4.6
DANN	Benign	0.72
PhyloP100		0.30
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: rs1604144; hg19: chr2-234605835;