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NM_007194.4(CHEK2):c.1427C>T (p.Thr476Met) AND Familial cancer of breast

Germline classification:
Conflicting interpretations of pathogenicity (11 submissions)
Last evaluated:
Mar 19, 2024
Review status:
criteria provided, conflicting classifications
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV000198554.39

Allele description [Variation Report for NM_007194.4(CHEK2):c.1427C>T (p.Thr476Met)]

NM_007194.4(CHEK2):c.1427C>T (p.Thr476Met)

Gene:
CHEK2:checkpoint kinase 2 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
22q12.1
Genomic location:
Preferred name:
NM_007194.4(CHEK2):c.1427C>T (p.Thr476Met)
Other names:
p.T476M:ACG>ATG
HGVS:
  • NC_000022.11:g.28694066G>A
  • NG_008150.2:g.52801C>T
  • NM_001005735.2:c.1556C>T
  • NM_001257387.2:c.764C>T
  • NM_001349956.2:c.1226C>T
  • NM_007194.4:c.1427C>TMANE SELECT
  • NM_145862.2:c.1340C>T
  • NP_001005735.1:p.Thr519Met
  • NP_001244316.1:p.Thr255Met
  • NP_001336885.1:p.Thr409Met
  • NP_009125.1:p.Thr476Met
  • NP_665861.1:p.Thr447Met
  • LRG_302t1:c.1427C>T
  • LRG_302:g.52801C>T
  • LRG_302p1:p.Thr476Met
  • NC_000022.10:g.29090054G>A
  • NG_008150.1:g.52769C>T
  • NM_001005735.1:c.1556C>T
  • NM_007194.3:c.1427C>T
  • p.T476M
Protein change:
T255M
Links:
dbSNP: rs142763740
NCBI 1000 Genomes Browser:
rs142763740
Molecular consequence:
  • NM_001005735.2:c.1556C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001257387.2:c.764C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001349956.2:c.1226C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_007194.4:c.1427C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_145862.2:c.1340C>T - missense variant - [Sequence Ontology: SO:0001583]
Observations:
7

Condition(s)

Name:
Familial cancer of breast
Synonyms:
Breast cancer, familial; Hereditary breast cancer
Identifiers:
MONDO: MONDO:0016419; MedGen: C0346153; OMIM: 114480

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV000254925Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))
Uncertain significance
(Feb 1, 2024)
germlineclinical testing

PubMed (11)
[See all records that cite these PMIDs]

SCV000778585HudsonAlpha Institute for Biotechnology, HudsonAlpha Institute for Biotechnology - CSER-HudsonAlpha
criteria provided, single submitter

(ACMG Guidelines, 2015)
Uncertain significance
(Apr 16, 2018)
unknown, maternalresearch

PubMed (1)
[See all records that cite this PMID]

SCV000785095Counsyl
criteria provided, single submitter

(Counsyl Autosomal Dominant Disease Classification criteria (2015))
Uncertain significance
(Oct 6, 2017)
unknownclinical testing

PubMed (13)
[See all records that cite these PMIDs]

Counsyl_Autosomal_Dominant_Disease_Classification_criteria_(2015)_v1.pdf,

Citation Link,

SCV000839455Mendelics
criteria provided, single submitter

(Mendelics Assertion Criteria 2017)
Likely pathogenic
(Jul 2, 2018)
unknownclinical testing

Citation Link,

SCV001429101Institute of Human Genetics, University of Leipzig Medical Center
criteria provided, single submitter

(ACMG Guidelines, 2015)
Uncertain significance
(Feb 13, 2024)
unknownclinical testing

PubMed (1)
[See all records that cite this PMID]

SCV001499649Department of Molecular Diagnostics, Institute of Oncology Ljubljana
criteria provided, single submitter

(ACMG Guidelines, 2015)
Uncertain significance
(Apr 12, 2020)
germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

SCV002556902Genetics and Molecular Pathology, SA Pathology

See additional submitters

criteria provided, single submitter

(ACMG Guidelines, 2015)
Uncertain significance
(Aug 11, 2021)
germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

SCV002579920MGZ Medical Genetics Center
criteria provided, single submitter

(ACMG Guidelines, 2015)
Uncertain significance
(Apr 25, 2022)
germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

SCV002757809Institute of Human Genetics, Heidelberg University
criteria provided, single submitter

(ACMG Guidelines, 2015)
Pathogenic
(Apr 14, 2022)
germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

SCV004215851Baylor Genetics
criteria provided, single submitter

(ACMG Guidelines, 2015)
Likely pathogenic
(Mar 19, 2024)
unknownclinical testing

PubMed (1)
[See all records that cite this PMID]

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedmaternalunknown1not providednot provided1not providedresearch
not providedunknownyesnot providednot providednot providednot providednot providedclinical testing
not providedunknownunknown1not providednot provided1not providedclinical testing, research
not providedgermlineyes6not providednot providednot providednot providedclinical testing
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

Male breast cancer in a multi-gene panel testing cohort: insights and unexpected results.

Pritzlaff M, Summerour P, McFarland R, Li S, Reineke P, Dolinsky JS, Goldgar DE, Shimelis H, Couch FJ, Chao EC, LaDuca H.

Breast Cancer Res Treat. 2017 Feb;161(3):575-586. doi: 10.1007/s10549-016-4085-4. Epub 2016 Dec 22.

PubMed [citation]
PMID:
28008555
PMCID:
PMC5241330

Targeted sequencing of 36 known or putative colorectal cancer susceptibility genes.

DeRycke MS, Gunawardena S, Balcom JR, Pickart AM, Waltman LA, French AJ, McDonnell S, Riska SM, Fogarty ZC, Larson MC, Middha S, Eckloff BW, Asmann YW, Ferber MJ, Haile RW, Gallinger S, Clendenning M, Rosty C, Win AK, Buchanan DD, Hopper JL, Newcomb PA, et al.

Mol Genet Genomic Med. 2017 Sep;5(5):553-569. doi: 10.1002/mgg3.317.

PubMed [citation]
PMID:
28944238
PMCID:
PMC5606870
See all PubMed Citations (22)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV000254925.13

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (11)

Description

This sequence change replaces threonine, which is neutral and polar, with methionine, which is neutral and non-polar, at codon 476 of the CHEK2 protein (p.Thr476Met). This variant is present in population databases (rs142763740, gnomAD 0.05%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with breast cancer, colorectal cancer, endometrial cancer, ovarian cancer, and/or prostate cancer (PMID: 21244692, 27443514, 28008555, 28944238, 29368341, 29520813, 31050813). ClinVar contains an entry for this variant (Variation ID: 128060). Based on a multifactorial likelihood algorithm using genetic, in silico, and/or statistical data, this variant has been determined to have a low probability of being pathogenic (external communication). Experimental studies are conflicting or provide insufficient evidence to determine the effect of this variant on CHEK2 function (PMID: 22114986, 22419737, 30851065, 31050813). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From HudsonAlpha Institute for Biotechnology, HudsonAlpha Institute for Biotechnology - CSER-HudsonAlpha, SCV000778585.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedresearch PubMed (1)
2not provided1not providednot providedresearch PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownunknown1not providednot provided1not providednot providednot provided
2maternalunknown1not providednot provided1not providednot providednot provided

From Counsyl, SCV000785095.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (13)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownunknownnot providednot providednot providednot providednot providednot providednot provided

From Mendelics, SCV000839455.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownunknownnot providednot providednot providednot providednot providednot providednot provided

From Institute of Human Genetics, University of Leipzig Medical Center, SCV001429101.4

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

Criteria applied: PS4_MOD,PP3

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownyesnot providednot providednot providednot providednot providednot providednot provided

From Department of Molecular Diagnostics, Institute of Oncology Ljubljana, SCV001499649.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided

From Genetics and Molecular Pathology, SA Pathology, SCV002556902.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided

From MGZ Medical Genetics Center, SCV002579920.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided6not providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot provided6not providednot providednot provided

From Institute of Human Genetics, Heidelberg University, SCV002757809.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

reported as secondary finding

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Myriad Genetics, Inc., SCV004020185.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

This variant is considered likely benign. This variant is strongly associated with less severe personal and family histories of cancer, typical for individuals without pathogenic variants in this gene [PMID: 25085752].

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownunknownnot providednot providednot providednot providednot providednot providednot provided

From Baylor Genetics, SCV004215851.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownunknownnot providednot providednot providednot providednot providednot providednot provided

Flagged submissions

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV004020185Myriad Genetics, Inc.
flagged submission
Reason: Outlier claim with insufficient supporting evidence
Notes: None

(Myriad Autosomal Dominant, Autosomal Recessive and X-Linked Classification Criteria (2023))
Likely benign
(Mar 9, 2023)
unknownclinical testing

PubMed (1)
[See all records that cite this PMID]

Citation Link

Last Updated: Nov 10, 2024