22-28725027-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_ModerateBP6BS2_Supporting

The NM_007194.4(CHEK2):c.542G>A(p.Arg181His) variant causes a missense change. The variant allele was found at a frequency of 0.0000527 in 1,613,934 control chromosomes in the GnomAD database, including 1 homozygotes. 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R181C) has been classified as Uncertain significance.

Frequency

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

Exomes 𝑓: 0.000052 ( 1 hom. )

Consequence

CHEK2
NM_007194.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:12B:10O:1

Conservation

PhyloP100: 3.74

Publications

29 publications found

Variant links:

Genes affected

CHEK2 (HGNC:16627): (checkpoint kinase 2) In response to DNA damage and replication blocks, cell cycle progression is halted through the control of critical cell cycle regulators. The protein encoded by this gene is a cell cycle checkpoint regulator and putative tumor suppressor. It contains a forkhead-associated protein interaction domain essential for activation in response to DNA damage and is rapidly phosphorylated in response to replication blocks and DNA damage. When activated, the encoded protein is known to inhibit CDC25C phosphatase, preventing entry into mitosis, and has been shown to stabilize the tumor suppressor protein p53, leading to cell cycle arrest in G1. In addition, this protein interacts with and phosphorylates BRCA1, allowing BRCA1 to restore survival after DNA damage. Mutations in this gene have been linked with Li-Fraumeni syndrome, a highly penetrant familial cancer phenotype usually associated with inherited mutations in TP53. Also, mutations in this gene are thought to confer a predisposition to sarcomas, breast cancer, and brain tumors. This nuclear protein is a member of the CDS1 subfamily of serine/threonine protein kinases. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

CHEK2 Gene-Disease associations (from GenCC):

CHEK2-related cancer predisposition
Inheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics, ClinGen
Li-Fraumeni syndrome 2
Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
hereditary breast carcinoma
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
acute myeloid leukemia
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
hereditary nonpolyposis colon cancer
Inheritance: Unknown Classification: LIMITED Submitted by: ClinGen
familial ovarian cancer
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

CHEK2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07827735).

BP6

Variant 22-28725027-C-T is Benign according to our data. Variant chr22-28725027-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 5598.

BS2

High AC in GnomAd4 at 9 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_007194.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CHEK2	NM_007194.4	MANE Select	c.542G>A	p.Arg181His	missense	Exon 4 of 15	NP_009125.1	O96017-1
CHEK2	NM_001005735.3		c.671G>A	p.Arg224His	missense	Exon 5 of 16	NP_001005735.1
CHEK2	NM_001438293.1		c.635G>A	p.Arg212His	missense	Exon 5 of 16	NP_001425222.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CHEK2	ENST00000404276.6	TSL:1 MANE Select	c.542G>A	p.Arg181His	missense	Exon 4 of 15	ENSP00000385747.1	O96017-1
CHEK2	ENST00000382580.6	TSL:1	c.671G>A	p.Arg224His	missense	Exon 5 of 16	ENSP00000372023.2	O96017-9
CHEK2	ENST00000402731.6	TSL:1	c.445-104G>A		intron	N/A	ENSP00000384835.2	A0A7P0MUT5

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152048

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000386

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000135

AC:

AN:

251408

AF XY:

0.000125

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00130

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000520

AC:

AN:

1461764

Hom.:

Cov.:

AF XY:

0.0000660

AC XY:

AN XY:

727186

show subpopulations

African (AFR)

AF:

0.000119

AC:

AN:

33474

American (AMR)

AF:

0.0000447

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.000932

AC:

AN:

39682

South Asian (SAS)

AF:

0.000128

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000171

AC:

AN:

1111916

Other (OTH)

AF:

0.0000497

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

Heterozygous variant carriers

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:

0.0000591

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74386

show subpopulations

African (AFR)

AF:

0.0000722

AC:

AN:

41534

American (AMR)

AF:

0.000131

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000387

AC:

AN:

5170

South Asian (SAS)

AF:

0.000208

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68002

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.469

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:

0.0000905

Hom.:

Bravo

AF:

0.000102

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000107

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Familial cancer of breast (5)

Hereditary cancer-predisposing syndrome (3)

not provided (4)

CHEK2-related cancer predisposition (2)

not specified (2)

Bone osteosarcoma;C2931456:Familial prostate cancer;C5882668:CHEK2-related cancer predisposition (1)

Breast and/or ovarian cancer (1)

Breast-ovarian cancer, familial, susceptibility to, 2 (1)

Familial cancer of breast;C0376358:Prostate cancer;C0585442:Bone osteosarcoma;C5882668:CHEK2-related cancer predisposition (1)

Hereditary breast ovarian cancer syndrome (1)

Malignant tumor of breast (1)

Prostate cancer (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Uncertain

-0.030

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.32

Eigen

Benign

-0.59

Eigen_PC

Benign

-0.41

FATHMM_MKL

Uncertain

0.84

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.052

MetaRNN

Benign

0.078

MetaSVM

Benign

-0.62

MutationAssessor

Benign

1.0

PhyloP100

3.7

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.68

REVEL

Uncertain

0.46

Sift

Benign

0.57

Sift4G

Benign

0.59

Polyphen

0.0080

Vest4

0.48

MVP

0.84

MPC

0.022

ClinPred

0.031

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.13

gMVP

0.41

Mutation Taster

=38/62

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