Genetic Variant CYP2E1:p.His457Leu (chr10-133538852-A-T) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 2P and 12B. PM2BP4_StrongBP6_Very_Strong

The NM_000773.4(CYP2E1):c.1370A>T(p.His457Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00241 in 1,613,672 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0013 ( 0 hom. )

Consequence

CYP2E1
NM_000773.4 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 4.44

Publications

12 publications found

Variant links:

Genes affected

CYP2E1 (HGNC:2631): (cytochrome P450 family 2 subfamily E member 1) 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 is induced by ethanol, the diabetic state, and starvation. The enzyme metabolizes both endogenous substrates, such as ethanol, acetone, and acetal, as well as exogenous substrates including benzene, carbon tetrachloride, ethylene glycol, and nitrosamines which are premutagens found in cigarette smoke. Due to its many substrates, this enzyme may be involved in such varied processes as gluconeogenesis, hepatic cirrhosis, diabetes, and cancer. [provided by RefSeq, Jul 2008]

CYP2E1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

PM2

Variant has high frequency in the AFR (0.0441) population. However there is too low homozygotes in high coverage region: (expected more than 2, got 0).

BP4

Computational evidence support a benign effect (MetaRNN=0.018719912).

BP6

Variant 10-133538852-A-T is Benign according to our data. Variant chr10-133538852-A-T is described in ClinVar as Benign. ClinVar VariationId is 784179.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000773.4. 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
	CYP2E1	NM_000773.4	MANE Select	c.1370A>T	p.His457Leu	missense	Exon 9 of 9	NP_000764.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CYP2E1	ENST00000252945.8	TSL:1 MANE Select	c.1370A>T	p.His457Leu	missense	Exon 9 of 9	ENSP00000252945.3
CYP2E1	ENST00000368520.1	TSL:1	n.1358+960A>T		intron	N/A
CYP2E1	ENST00000883804.1		c.1490A>T	p.His497Leu	missense	Exon 9 of 9	ENSP00000553863.1

Frequencies

GnomAD3 genomes

AF:

0.0126

AC:

1921

AN:

151880

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0445

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00387

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.0110

GnomAD2 exomes

AF:

0.00324

AC:

814

AN:

251386

AF XY:

0.00241

show subpopulations

Gnomad AFR exome

AF:

0.0426

Gnomad AMR exome

AF:

0.00278

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000123

Gnomad OTH exome

AF:

0.00179

GnomAD4 exome

AF:

0.00135

AC:

1972

AN:

1461672

Hom.:

Cov.:

AF XY:

0.00120

AC XY:

869

AN XY:

727152

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0460

AC:

1535

AN:

33342

American (AMR)

AF:

0.00293

AC:

131

AN:

44698

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000151

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00312

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.0000791

AC:

AN:

1111986

Other (OTH)

AF:

0.00310

AC:

187

AN:

60374

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.323

Heterozygous variant carriers

134

268

403

537

671

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

104

156

208

260

<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:

0.0127

AC:

1923

AN:

152000

Hom.:

Cov.:

AF XY:

0.0124

AC XY:

919

AN XY:

74330

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0444

AC:

1834

AN:

41338

American (AMR)

AF:

0.00386

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.000415

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68002

Other (OTH)

AF:

0.0109

AC:

AN:

2104

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.348

Heterozygous variant carriers

107

215

322

430

537

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

110

<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:

0.000973

Hom.:

ESP6500AA

AF:

0.0195

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00430

AC:

522

Asia WGS

AF:

0.00346

AC:

AN:

3478

EpiCase

AF:

0.000327

EpiControl

AF:

0.000237

ClinVar

ClinVar submissions as Germline

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.34

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.26

CADD

Uncertain

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.48

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.92

MetaRNN

Benign

0.019

MetaSVM

Benign

-0.53

MutationAssessor

Pathogenic

3.4

PhyloP100

4.4

PrimateAI

Benign

0.44

PROVEAN

Pathogenic

-4.7

REVEL

Uncertain

0.34

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0050

Polyphen

1.0

Vest4

0.32

MVP

0.84

MPC

1.0

ClinPred

0.047

GERP RS

5.1

Varity_R

0.87

gMVP

0.92

Mutation Taster

=32/68

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over