rs28969421

Variant names:

• chr19-41018082-G-A
• rs28969421
• NM_000767.5:c.*1255G>A

Your query was ambiguous. Multiple possible variants found:

• chr19-41018082-G-A
• chr19-41018082-G-C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NM_000767.5(CYP2B6):​c.*1255G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00945 in 152,244 control chromosomes in the GnomAD database, including 24 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 0.0094 (24 hom., cov: 31)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: CYP2B6 NM_000767.5 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.339
• Publications: 4 publications found

Genes affected

CYP2B6 (HGNC:2615): (cytochrome P450 family 2 subfamily B member 6) This gene, CYP2B6, encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and its expression is induced by phenobarbital. The enzyme is known to metabolize some xenobiotics, such as the anti-cancer drugs cyclophosphamide and ifosphamide. Transcript variants for this gene have been described; however, it has not been resolved whether these transcripts are in fact produced by this gene or by a closely related pseudogene, CYP2B7. Both the gene and the pseudogene are located in the middle of a CYP2A pseudogene found in a large cluster of cytochrome P450 genes from the CYP2A, CYP2B and CYP2F subfamilies on chromosome 19q. [provided by RefSeq, Jul 2008]

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.96).
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00945 (1438/152244) while in subpopulation AFR AF = 0.0329 (1368/41542). AF 95% confidence interval is 0.0315. There are 24 homozygotes in GnomAd4. There are 652 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.
• BS2: High AC in GnomAd4 at 1438 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000767.5. 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
	CYP2B6	NM_000767.5	MANE Select	c.*1255G>A		3_prime_UTR	Exon 9 of 9	NP_000758.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CYP2B6	ENST00000324071.10	TSL:1 MANE Select	c.*1255G>A		3_prime_UTR	Exon 9 of 9	ENSP00000324648.2
	CYP2B6	ENST00000863358.1		c.*1255G>A		3_prime_UTR	Exon 7 of 7	ENSP00000533417.1
	CYP2B6	ENST00000863357.1		c.*1255G>A		3_prime_UTR	Exon 6 of 6	ENSP00000533416.1

Frequencies

GnomAD3 genomes AF: 0.00944 AC: 1436 AN: 152126 Hom.: 24 Cov.: 31

Gnomad AFR AF: 0.0330

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00340

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00717

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 18 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 14

African (AFR) AC: 0 AN: 0

American (AMR) AC: 0 AN: 0

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: 0.00 AC: 0 AN: 4

Middle Eastern (MID) AC: 0 AN: 0

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 12

Other (OTH) AF: 0.00 AC: 0 AN: 2

GnomAD4 genome AF: 0.00945 AC: 1438 AN: 152244 Hom.: 24 Cov.: 31 AF XY: 0.00876 AC XY: 652 AN XY: 74430

African (AFR) AF: 0.0329 AC: 1368 AN: 41542

American (AMR) AF: 0.00340 AC: 52 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5172

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10596

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 68022

Other (OTH) AF: 0.00710 AC: 15 AN: 2114

Alfa AF: 0.00260 Hom.: 2

Bravo AF: 0.0109

Asia WGS AF: 0.00202 AC: 7 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
CADD	Benign	1.9
DANN	Benign	0.19
PhyloP100		0.34
Mutation Taster		=100/0	polymorphism

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: rs28969421; hg19: chr19-41523987;