22-28703507-T-G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 1P and 1B. PP3BS2_Supporting

The NM_007194.4(CHEK2):c.906A>C(p.Glu302Asp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000974 in 1,437,854 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E302K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000010 ( 1 hom. )

Consequence

CHEK2
NM_007194.4 missense, splice_region

Scores

Splicing: ADA: 0.0006935

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:12

Conservation

PhyloP100: 0.997

Publications

12 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
hereditary breast carcinoma
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen
Li-Fraumeni syndrome 2
Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
acute myeloid leukemia
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
hereditary nonpolyposis colon cancer
Inheritance: AD 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: Uncertain_significance. The variant received 0 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.761

BS2

High AC in GnomAdExome4 at 13 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
CHEK2	NM_007194.4	MANE Select	c.906A>C	p.Glu302Asp	missense splice_region	Exon 8 of 15	NP_009125.1
CHEK2	NM_001005735.3		c.1035A>C	p.Glu345Asp	missense splice_region	Exon 9 of 16	NP_001005735.1
CHEK2	NM_001438293.1		c.999A>C	p.Glu333Asp	missense splice_region	Exon 9 of 16	NP_001425222.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CHEK2	ENST00000404276.6	TSL:1 MANE Select	c.906A>C	p.Glu302Asp	missense splice_region	Exon 8 of 15	ENSP00000385747.1
CHEK2	ENST00000382580.6	TSL:1	c.1035A>C	p.Glu345Asp	missense splice_region	Exon 9 of 16	ENSP00000372023.2
CHEK2	ENST00000402731.6	TSL:1	c.705A>C	p.Glu235Asp	missense splice_region	Exon 6 of 13	ENSP00000384835.2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152148

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:

0.00

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:

0.0000296

AC:

AN:

202734

AF XY:

0.0000459

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000688

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000466

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000101

AC:

AN:

1285706

Hom.:

Cov.:

AF XY:

0.0000109

AC XY:

AN XY:

644066

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

29810

American (AMR)

AF:

0.0000508

AC:

AN:

39388

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24620

East Asian (EAS)

AF:

0.00

AC:

AN:

38226

South Asian (SAS)

AF:

0.00

AC:

AN:

79288

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51302

Middle Eastern (MID)

AF:

0.000367

AC:

AN:

5446

European-Non Finnish (NFE)

AF:

0.00000830

AC:

AN:

963336

Other (OTH)

AF:

0.0000184

AC:

AN:

54290

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.466

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:

0.00000657

AC:

AN:

152148

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74344

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41426

American (AMR)

AF:

0.00

AC:

AN:

15272

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000249

AC:

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Hereditary cancer-predisposing syndrome (3)

Familial cancer of breast (2)

not provided (2)

not specified (2)

Carcinoma of colon (1)

CHEK2-related disorder (1)

Familial cancer of breast;C0346629:Colorectal cancer;C0376358:Prostate cancer;C0585442:Bone osteosarcoma;C5882668:CHEK2-related cancer predisposition (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.76

BayesDel_addAF

Uncertain

0.053

BayesDel_noAF

Uncertain

0.020

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.35

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.29

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.84

M_CAP

Benign

0.048

MetaRNN

Pathogenic

0.76

MetaSVM

Benign

-0.96

MutationAssessor

Benign

1.8

PhyloP100

1.0

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-2.9

REVEL

Uncertain

0.41

Sift

Uncertain

0.015

Sift4G

Uncertain

0.013

Polyphen

0.95

Vest4

0.91

MutPred

0.81

Gain of sheet (P = 0.1451)

MVP

0.80

MPC

0.054

ClinPred

0.71

GERP RS

3.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.79

gMVP

0.67

Mutation Taster

=44/56

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00069

dbscSNV1_RF

Benign

0.25

SpliceAI score (max)

0.010

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over