Genetic Variant CYP3A4:p.Thr185Ser (chr7-99768470-G-C) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_017460.6(CYP3A4):c.554C>G(p.Thr185Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000274 in 1,614,024 control chromosomes in the GnomAD database, including 9 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 0.00011 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00029 ( 9 hom. )

Consequence

CYP3A4
NM_017460.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.31

Publications

42 publications found

Variant links:

Genes affected

CYP3A4 (HGNC:2637): (cytochrome P450 family 3 subfamily A member 4) This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases that 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 glucocorticoids and some pharmacological agents. This enzyme is involved in the metabolism of approximately half the drugs in use today, including acetaminophen, codeine, cyclosporin A, diazepam, erythromycin, and chloroquine. The enzyme also metabolizes some steroids and carcinogens. This gene is part of a cluster of cytochrome P450 genes on chromosome 7q21.1. Previously another CYP3A gene, CYP3A3, was thought to exist; however, it is now thought that this sequence represents a transcript variant of CYP3A4. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Aug 2020]

CYP3A4 Gene-Disease associations (from GenCC):

vitamin D-dependent rickets, type 3
Inheritance: Unknown, AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

CYP3A4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.03089279).

BS2

High AC in GnomAd4 at 17 Unknown,AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017460.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CYP3A4	NM_017460.6	MANE Select	c.554C>G	p.Thr185Ser	missense	Exon 7 of 13	NP_059488.2
	CYP3A4	NM_001202855.3		c.554C>G	p.Thr185Ser	missense	Exon 7 of 13	NP_001189784.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CYP3A4	ENST00000651514.1	MANE Select	c.554C>G	p.Thr185Ser	missense	Exon 7 of 13	ENSP00000498939.1
CYP3A4	ENST00000336411.7	TSL:1	c.554C>G	p.Thr185Ser	missense	Exon 7 of 14	ENSP00000337915.3
CYP3A4	ENST00000652018.1		c.407C>G	p.Thr136Ser	missense	Exon 5 of 11	ENSP00000498733.1

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00288

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000756

AC:

AN:

251308

AF XY:

0.0000515

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00103

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000291

AC:

425

AN:

1461710

Hom.:

Cov.:

AF XY:

0.000253

AC XY:

184

AN XY:

727162

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33466

American (AMR)

AF:

0.00

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.0106

AC:

422

AN:

39690

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5734

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111920

Other (OTH)

AF:

0.0000497

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

100

125

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.000112

AC:

AN:

152314

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74482

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41562

American (AMR)

AF:

0.00

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00289

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

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:

0.0000868

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.0000988

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.33

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.074

Eigen

Uncertain

0.19

Eigen_PC

Uncertain

0.25

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.95

M_CAP

Benign

0.018

MetaRNN

Benign

0.031

MetaSVM

Benign

-0.53

MutationAssessor

Benign

1.9

PhyloP100

5.3

PrimateAI

Uncertain

0.54

PROVEAN

Uncertain

-3.0

REVEL

Benign

0.12

Sift

Benign

0.091

Sift4G

Benign

0.11

Polyphen

0.91

Vest4

0.49

MutPred

0.28

Gain of disorder (P = 0.1795)

MVP

0.79

MPC

0.32

ClinPred

0.36

GERP RS

4.3

Varity_R

0.69

Mutation Taster

=40/60

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