Variant chr19-40847036-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_000762.6(CYP2A6):c.670T>C(p.Ser224Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00043 in 1,611,718 control chromosomes in the GnomAD database, including 75 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as drug response (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt.

Frequency

Genomes: 𝑓 0.00039 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00043 ( 73 hom. )

Consequence

CYP2A6
NM_000762.6 missense

Scores

Clinical Significance

drug response no assertion criteria provided O:1

Conservation

PhyloP100: -0.0970

Variant links:

Genes affected

CYP2A6 (HGNC:2610): (cytochrome P450 family 2 subfamily A member 6) This gene, CYP2A6, 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 hydroxylate coumarin, and also metabolizes nicotine, aflatoxin B1, nitrosamines, and some pharmaceuticals. Individuals with certain allelic variants are said to have a poor metabolizer phenotype, meaning they do not efficiently metabolize coumarin or nicotine. This gene is part of a large cluster of cytochrome P450 genes from the CYP2A, CYP2B and CYP2F subfamilies on chromosome 19q. The gene was formerly referred to as CYP2A3; however, it has been renamed CYP2A6. [provided by RefSeq, Jul 2008]

CYP2A6 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.057569116).

BS2

High AC in GnomAd4 at 59 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CYP2A6	NM_000762.6 linkuse as main transcript	c.670T>C	p.Ser224Pro	missense_variant	5/9	ENST00000301141.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
CYP2A6	ENST00000301141.10 linkuse as main transcript	c.670T>C	p.Ser224Pro	missense_variant	5/9	1	NM_000762.6	P1
CYP2A6	ENST00000596719.5 linkuse as main transcript	n.521T>C		non_coding_transcript_exon_variant	4/6	1
CYP2A6	ENST00000600495.1 linkuse as main transcript	c.*482T>C		3_prime_UTR_variant, NMD_transcript_variant	5/6	1

Frequencies

GnomAD3 genomes

AF:

0.000389

AC:

AN:

151688

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00980

Gnomad SAS

AF:

0.00168

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00109

AC:

272

AN:

249718

Hom.:

AF XY:

0.00104

AC XY:

140

AN XY:

134984

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0129

Gnomad SAS exome

AF:

0.00115

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000885

Gnomad OTH exome

AF:

0.000328

GnomAD4 exome

AF:

0.000434

AC:

634

AN:

1459916

Hom.:

Cov.:

AF XY:

0.000472

AC XY:

343

AN XY:

726268

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0124

Gnomad4 SAS exome

AF:

0.00128

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.000763

GnomAD4 genome

AF:

0.000389

AC:

AN:

151802

Hom.:

Cov.:

AF XY:

0.000458

AC XY:

AN XY:

74176

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00982

Gnomad4 SAS

AF:

0.00168

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000131

Hom.:

Bravo

AF:

0.000487

ExAC

AF:

0.00102

AC:

124

ClinVar

Significance: drug response

Submissions summary: Other:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Tegafur response

Other:1

drug response, no assertion criteria provided

literature only

OMIM

Jun 01, 2002

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.060

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.50

CADD

Benign

3.4

DANN

Benign

0.14

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.011

LIST_S2

Benign

0.49

MetaRNN

Benign

0.058

MetaSVM

Benign

-0.99

MutationTaster

Benign

0.000045

PrimateAI

Benign

0.42

PROVEAN

Benign

1.9

REVEL

Benign

0.073

Sift

Benign

1.0

Sift4G

Benign

1.0

Vest4

0.25

MVP

0.35

MPC

0.11

ClinPred

0.010

GERP RS

1.3

gMVP

0.44

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over