22-28725028-G-C
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PM5
The NM_007194.4(CHEK2):c.541C>G(p.Arg181Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. R181H) has been classified as Likely benign.
Frequency
Genomes: not found (cov: 32)
Consequence
CHEK2
NM_007194.4 missense
NM_007194.4 missense
Scores
10
8
Clinical Significance
Conservation
PhyloP100: 2.67
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PM5
?
Other missense variant is known to change same aminoacid residue: Variant chr22-28725028-G-A is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CHEK2 | NM_007194.4 | c.541C>G | p.Arg181Gly | missense_variant | 4/15 | ENST00000404276.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CHEK2 | ENST00000404276.6 | c.541C>G | p.Arg181Gly | missense_variant | 4/15 | 1 | NM_007194.4 | P2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Sep 15, 2020 | Not observed in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
BayesDel_addAF
Uncertain
T
BayesDel_noAF
Benign
Cadd
Benign
Dann
Uncertain
DEOGEN2
Uncertain
T;.;T;T;.;T;.;.;D
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
M_CAP
Uncertain
D
MetaRNN
Uncertain
D;D;D;D;D;D;D;D;D
MetaSVM
Uncertain
D
MutationAssessor
Uncertain
M;M;M;M;.;M;M;.;.
MutationTaster
Benign
D;D;D;D;N;N;N;N;N;N;N
PrimateAI
Benign
T
PROVEAN
Benign
N;N;N;N;N;.;N;N;.
REVEL
Uncertain
Sift
Benign
T;T;T;T;T;.;T;T;.
Sift4G
Benign
T;T;T;T;T;.;T;T;T
Polyphen
B;B;B;B;P;B;B;.;.
Vest4
MutPred
Gain of ubiquitination at K177 (P = 0.0329);Gain of ubiquitination at K177 (P = 0.0329);Gain of ubiquitination at K177 (P = 0.0329);Gain of ubiquitination at K177 (P = 0.0329);.;Gain of ubiquitination at K177 (P = 0.0329);Gain of ubiquitination at K177 (P = 0.0329);.;Gain of ubiquitination at K177 (P = 0.0329);
MVP
MPC
0.040
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at