rs1577920640

Variant names:

• chr4-69096451-CT-C
• rs1577920640
• NM_001349568.2:c.-26-2086delT

Your query was ambiguous. Multiple possible variants found:

• chr4-69096451-CT-C
• chr4-69096451-CT-CTT

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001349568.2(UGT2B7):​c.-26-2086delT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000693 in 1,443,252 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as drug response (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: UGT2B7 NM_001349568.2 intron
• Clinical Significance: drug response no assertion criteria provided O:1
• Conservation: PhyloP100: -1.31

Genes affected

UGT2B7 (HGNC:12554): (UDP glucuronosyltransferase family 2 member B7) The protein encoded by this gene belongs to the UDP-glycosyltransferase (UGT) family. UGTs serve a major role in the conjugation and subsequent elimination of potentially toxic xenobiotics and endogenous compounds. This protein is localized in the microsome membrane, and has unique specificity for 3,4-catechol estrogens and estriol, suggesting that it may play an important role in regulating the level and activity of these potent estrogen metabolites. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UGT2B7	NM_001349568.2	c.-26-2086delT		intron_variant	Intron 2 of 6		NP_001336497.1
UGT2B7	NM_001074.4	c.-69delT		upstream_gene_variant		ENST00000305231.12	NP_001065.2
UGT2B7	NM_001330719.2	c.-69delT		upstream_gene_variant			NP_001317648.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UGT2B7	ENST00000305231.12	c.-69delT		upstream_gene_variant		1	NM_001074.4	ENSP00000304811.7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.93e-7 AC: 1 AN: 1443252 Hom.: 0 Cov.: 30 AF XY: 0.00000139 AC XY: 1 AN XY: 717616

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.04e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: drug response

Submissions summary: Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Tramadol response Other:1

Apr 28, 2018

Bruce Budowle Laboratory, University of North Texas Health Science Center

Significance: drug response

Review Status: no assertion criteria provided

Collection Method: research

- T:M1 = postmortem ratio or tramadol to O-desmethyltramadol; t-MP = model-based clustered metabolizer phenotype inferred from T:M1

Computational scores

Source: dbNSFP v4.3

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: rs1577920640; hg19: chr4-69962169;