11-125627710-T-G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_001114122.3(CHEK1):c.169T>G(p.Cys57Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,448 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CHEK1
NM_001114122.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.20

Publications

0 publications found

Variant links:

Genes affected

CHEK1 (HGNC:1925): (checkpoint kinase 1) The protein encoded by this gene belongs to the Ser/Thr protein kinase family. It is required for checkpoint mediated cell cycle arrest in response to DNA damage or the presence of unreplicated DNA. This protein acts to integrate signals from ATM and ATR, two cell cycle proteins involved in DNA damage responses, that also associate with chromatin in meiotic prophase I. Phosphorylation of CDC25A protein phosphatase by this protein is required for cells to delay cell cycle progression in response to double-strand DNA breaks. Several alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Oct 2011]

CHEK1 Gene-Disease associations (from GenCC):

familial ovarian cancer
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
hereditary breast carcinoma
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

CHEK1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.793

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHEK1	NM_001114122.3 link	c.169T>G	p.Cys57Gly	missense_variant	Exon 3 of 13	ENST00000438015.7	NP_001107594.1	O14757-1B4DT73

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHEK1	ENST00000438015.7 link	c.169T>G	p.Cys57Gly	missense_variant	Exon 3 of 13	5	NM_001114122.3	ENSP00000388648.1		O14757-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251272

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461448

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727052

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33460

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39650

South Asian (SAS)

AF:

0.00

AC:

AN:

86242

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5720

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111746

Other (OTH)

AF:

0.0000166

AC:

AN:

60374

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.675

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 15, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.169T>G (p.C57G) alteration is located in exon 3 (coding exon 2) of the CHEK1 gene. This alteration results from a T to G substitution at nucleotide position 169, causing the cysteine (C) at amino acid position 57 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.73

BayesDel_addAF

Pathogenic

0.25

BayesDel_noAF

Pathogenic

0.21

CADD

Pathogenic

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.30

.;T;T;.;.;T;T;T;.;T

Eigen

Benign

0.10

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.96

D;D;.;.;D;D;.;.;D;D

M_CAP

Benign

0.035

MetaRNN

Pathogenic

0.79

D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.69

MutationAssessor

Benign

1.1

L;L;L;.;.;.;L;L;.;.

PhyloP100

7.2

PrimateAI

Uncertain

0.76

PROVEAN

Pathogenic

-7.5

.;D;D;D;D;D;D;D;.;D

REVEL

Uncertain

0.56

Sift

Pathogenic

0.0

.;D;D;T;T;D;D;D;.;D

Sift4G

Benign

0.20

T;D;D;T;T;T;D;D;T;T

Polyphen

0.082

.;B;B;.;.;.;B;B;.;.

Vest4

0.83

MutPred

0.43

Gain of disorder (P = 0.0267);Gain of disorder (P = 0.0267);Gain of disorder (P = 0.0267);Gain of disorder (P = 0.0267);Gain of disorder (P = 0.0267);Gain of disorder (P = 0.0267);Gain of disorder (P = 0.0267);Gain of disorder (P = 0.0267);.;Gain of disorder (P = 0.0267);

MVP

0.73

MPC

1.4

ClinPred

0.99

GERP RS

5.2

Varity_R

0.97

Mutation Taster

=18/82

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.44

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.44

Position offset: 0

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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11-125627710-T-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over