Genetic Variant TOP2A:p.Glu1305Lys (chr17-40392636-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001067.4(TOP2A):c.3913G>A(p.Glu1305Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000057 in 1,613,168 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000057 ( 0 hom. )

Consequence

TOP2A
NM_001067.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.54

Publications

4 publications found

Variant links:

Genes affected

TOP2A (HGNC:11989): (DNA topoisomerase II alpha) This gene encodes a DNA topoisomerase, an enzyme that controls and alters the topologic states of DNA during transcription. This nuclear enzyme is involved in processes such as chromosome condensation, chromatid separation, and the relief of torsional stress that occurs during DNA transcription and replication. It catalyzes the transient breaking and rejoining of two strands of duplex DNA which allows the strands to pass through one another, thus altering the topology of DNA. Two forms of this enzyme exist as likely products of a gene duplication event. The gene encoding this form, alpha, is localized to chromosome 17 and the beta gene is localized to chromosome 3. The gene encoding this enzyme functions as the target for several anticancer agents and a variety of mutations in this gene have been associated with the development of drug resistance. Reduced activity of this enzyme may also play a role in ataxia-telangiectasia. [provided by RefSeq, Jul 2010]

TOP2A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.1828635).

BS2

High AC in GnomAd4 at 9 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001067.4. 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
	TOP2A	NM_001067.4	MANE Select	c.3913G>A	p.Glu1305Lys	missense	Exon 30 of 35	NP_001058.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TOP2A	ENST00000423485.6	TSL:1 MANE Select	c.3913G>A	p.Glu1305Lys	missense	Exon 30 of 35	ENSP00000411532.1	P11388-1
TOP2A	ENST00000917864.1		c.3730G>A	p.Glu1244Lys	missense	Exon 29 of 34	ENSP00000587923.1
TOP2A	ENST00000917865.1		c.3298G>A	p.Glu1100Lys	missense	Exon 25 of 30	ENSP00000587924.1

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000483

AC:

AN:

248436

AF XY:

0.0000445

show subpopulations

Gnomad AFR exome

AF:

0.000129

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000798

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000568

AC:

AN:

1461024

Hom.:

Cov.:

AF XY:

0.0000592

AC XY:

AN XY:

726784

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33452

American (AMR)

AF:

0.00

AC:

AN:

44620

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39690

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86120

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53136

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000684

AC:

AN:

1111750

Other (OTH)

AF:

0.0000331

AC:

AN:

60358

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.472

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:

0.0000592

AC:

AN:

152144

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74324

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41434

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

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:

0.000102

Hom.:

Bravo

AF:

0.0000529

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000579

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.000119

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.39

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.84

M_CAP

Benign

0.0067

MetaRNN

Benign

0.18

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.6

PhyloP100

3.5

PrimateAI

Benign

0.45

PROVEAN

Benign

-1.3

REVEL

Benign

0.071

Sift

Benign

0.21

Sift4G

Benign

0.47

Polyphen

0.83

Vest4

0.23

MutPred

0.23

Gain of ubiquitination at E1305 (P = 0.0022)

MVP

0.27

MPC

0.19

ClinPred

0.14

GERP RS

5.8

Varity_R

0.077

gMVP

0.16

Mutation Taster

=81/19

polymorphism

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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