Genetic Variant CYP2C8:c.332-7_332-6dupTT (chr10-95067362-T-TAA) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP6

The NM_000770.3(CYP2C8):c.332-7_332-6dupTT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000725 in 1,613,588 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Likely benign (no stars).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 19)

Exomes 𝑓: 0.000064 ( 1 hom. )

Consequence

CYP2C8
NM_000770.3 splice_region, intron

Scores

Not classified

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: -0.927

Publications

15 publications found

Variant links:

Genes affected

CYP2C8 (HGNC:2622): (cytochrome P450 family 2 subfamily C member 8) This gene 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 many xenobiotics, including the anticonvulsive drug mephenytoin, benzo(a)pyrene, 7-ethyoxycoumarin, and the anti-cancer drug taxol. This gene is located within a cluster of cytochrome P450 genes on chromosome 10q24. Several transcript variants encoding a few different isoforms have been found for this gene. [provided by RefSeq, Nov 2010]

CYP2C8 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

BP6

Variant 10-95067362-T-TAA is Benign according to our data. Variant chr10-95067362-T-TAA is described in ClinVar as Likely_benign. ClinVar VariationId is 3043359.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein
CYP2C8	NM_000770.3 link	c.332-7_332-6dupTT	splice_region_variant, intron_variant	Intron 2 of 8	ENST00000371270.6	NP_000761.3
CYP2C8	NM_001198853.1 link	c.122-7_122-6dupTT	splice_region_variant, intron_variant	Intron 2 of 8		NP_001185782.1
CYP2C8	NM_001198855.1 link	c.122-7_122-6dupTT	splice_region_variant, intron_variant	Intron 3 of 9		NP_001185784.1
CYP2C8	NM_001198854.1 link	c.26-7_26-6dupTT	splice_region_variant, intron_variant	Intron 1 of 7		NP_001185783.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CYP2C8	ENST00000371270.6 link	c.332-7_332-6dupTT		splice_region_variant, intron_variant	Intron 2 of 8	1	NM_000770.3	ENSP00000360317.3

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

151688

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000315

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000525

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000194

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000124

AC:

AN:

250816

AF XY:

0.000140

show subpopulations

Gnomad AFR exome

AF:

0.000311

Gnomad AMR exome

AF:

0.000203

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000272

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000793

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000643

AC:

AN:

1461780

Hom.:

Cov.:

AF XY:

0.0000743

AC XY:

AN XY:

727194

show subpopulations

African (AFR)

AF:

0.000149

AC:

AN:

33474

American (AMR)

AF:

0.000246

AC:

AN:

44698

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.000302

AC:

AN:

39694

South Asian (SAS)

AF:

0.0000928

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.0000374

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00121

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000360

AC:

AN:

1111954

Other (OTH)

AF:

0.000149

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000152

AC:

AN:

151808

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74146

show subpopulations

African (AFR)

AF:

0.000338

AC:

AN:

41404

American (AMR)

AF:

0.000524

AC:

AN:

15262

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.000194

AC:

AN:

5144

South Asian (SAS)

AF:

0.00

AC:

AN:

4802

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10498

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67924

Other (OTH)

AF:

0.00

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.473

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000509

Hom.:

469

EpiCase

AF:

0.000273

EpiControl

AF:

0.000119

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

CYP2C8-related disorder

Benign:1

Jun 20, 2019

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

-0.93

Mutation Taster

=184/16

disease causing (fs/PTC)

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over