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Yanus GA, Suspitsin EN, Imyanitov EN. The Spectrum of Disease-Associated Alleles in Countries with a Predominantly Slavic Population. Int J Mol Sci 2024; 25:9335. [PMID: 39273284 PMCID: PMC11394759 DOI: 10.3390/ijms25179335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Revised: 08/21/2024] [Accepted: 08/25/2024] [Indexed: 09/15/2024] Open
Abstract
There are more than 260 million people of Slavic descent worldwide, who reside mainly in Eastern Europe but also represent a noticeable share of the population in the USA and Canada. Slavic populations, particularly Eastern Slavs and some Western Slavs, demonstrate a surprisingly high degree of genetic homogeneity, and, consequently, remarkable contribution of recurrent alleles associated with hereditary diseases. Along with pan-European pathogenic variants with clearly elevated occurrence in Slavic people (e.g., ATP7B c.3207C>A and PAH c.1222C>T), there are at least 52 pan-Slavic germ-line mutations (e.g., NBN c.657_661del and BRCA1 c.5266dupC) as well as several disease-predisposing alleles characteristic of the particular Slavic communities (e.g., Polish SDHD c.33C>A and Russian ARSB c.1562G>A variants). From a clinical standpoint, Slavs have some features of a huge founder population, thus providing a unique opportunity for efficient genetic studies.
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Affiliation(s)
- Grigoriy A Yanus
- Laboratory of Molecular Diagnostics, St. Petersburg State Pediatric Medical University, 194100 St. Petersburg, Russia
| | - Evgeny N Suspitsin
- Department of Medical Genetics, St. Petersburg State Pediatric Medical University, 194100 St. Petersburg, Russia
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St. Petersburg, Russia
| | - Evgeny N Imyanitov
- Department of Medical Genetics, St. Petersburg State Pediatric Medical University, 194100 St. Petersburg, Russia
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St. Petersburg, Russia
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2
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Zhang JQ, Dos Anjos CH, Sevilimedu V, Crown A, Amoroso KA, Pilewskie ML, Robson ME, Gemignani ML. Association of Moderate-Risk Breast Cancer Genes with Contralateral Prophylactic Mastectomy and Bilateral Disease. Ann Surg Oncol 2023; 30:6990-6999. [PMID: 37661222 PMCID: PMC11005956 DOI: 10.1245/s10434-023-14141-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 06/23/2023] [Indexed: 09/05/2023]
Abstract
BACKGROUND The impact of ATM, CHEK2, and PALB2, the three most prevalent moderate-risk breast cancer genes, on surgical decision making is not well known. METHODS Our retrospective study included patients with resectable non-metastatic breast cancer who underwent multigene panel testing between July 2014 and January 2020 with at least one genetic alteration (pathogenic or variant of uncertain significance [VUS] in ATM [n = 49], CHEK [n = 57], or PALB2 [n = 27]). Our objectives were to determine the rate of contralateral prophylactic mastectomy (CPM) and the rate of bilateral breast cancer. Univariable analyses (UVA) and multivariable analyses (MVA) were performed to identify factors associated with CPM and bilateral breast cancer. RESULTS The rate of CPM was 39% (n = 49/127), with 54% (n = 25/46) of patients with a pathogenic mutation and 30% (n = 24/81) of patients with a VUS choosing CPM. On MVA, premenopausal status (odds ratio [OR] 3.46) and a pathogenic alteration (OR 3.01) were associated with increased use of CPM. Bilateral disease was noted in 16% (n = 22/138). Patients with pathogenic mutations had a 22% (n = 11/51) incidence of bilateral breast cancer, while patients with VUS had a 13% (n = 11/87) incidence, although this was not statistically significant on UVA or MVA. On MVA, premenopausal status was associated with a decreased risk of bilateral disease (OR 0.33, p = 0.022). During follow-up, a breast cancer event occurred in 16% (n = 22/138). CONCLUSIONS Our study identified a high rate of CPM among those with ATM, CHEK2, and PALB2 alterations, including VUS. Further studies are needed to clarify reasons for CPM among patients with moderate-risk alterations.
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Affiliation(s)
- Jennifer Q Zhang
- Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
- Department of Surgery, Hospital of the University of Pennsylvania, University of Pennsylvania, Philadelphia, PA, USA.
| | | | - Varadan Sevilimedu
- Biostatistics Service, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Angelena Crown
- Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Breast Surgery, True Family Women's Cancer Center, Swedish Cancer Institute, Seattle, WA, USA
| | - Kimberly A Amoroso
- Clinical Genetics Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Melissa L Pilewskie
- Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Mark E Robson
- Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Mary L Gemignani
- Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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Li B, Xu W, Cao J, Guo D, Tao Z, Jin J, Hu X. A study of clinical and molecular characteristics in bilateral primary breast cancer. Cancer Med 2023; 12:15881-15892. [PMID: 37293877 PMCID: PMC10469734 DOI: 10.1002/cam4.6226] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/18/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023] Open
Abstract
BACKGROUND Bilateral primary breast cancer (BPBC) is a rare type of breast cancer. Studies on the clinicopathologic and molecular characteristics of BPBC in a metastatic context are very limited. METHODS A total of 574 unselected metastatic breast cancer patients with clinical information were enrolled in our next-generation sequencing (NGS) database. Patients with BPBC from our NGS database were regarded as the study cohort. In addition, 1467 patients with BPBC and 2874 patients with unilateral breast cancer (UBC) from the Surveillance, Epidemiology, and End Results (SEER) public database were also analyzed to determine the characteristics of BPBC. RESULTS Among the 574 patients enrolled in our NGS database, 20 (3.5%) patients had bilateral disease, comprising 15 (75%) patients with synchronous bilateral disease and 5 (25%) patients with metachronous bilateral disease. Eight patients had bilateral hormone receptor-positive (HR+)/human epidermal growth factor receptor-negative (HER2-) tumors, and three had unilateral HR+/HER2- tumors. More HR+/HER2- tumors and lobular components were found in BPBC patients than in UBC patients. The molecular subtype of the metastatic lesions in three patients was inconsistent with either side of the primary lesions, which suggested the importance of rebiopsy. Strong correlations in clinicopathologic features between the left and right tumors in BPBC were exhibited in the SEER database. In our NGS database, only one BPBC patient was found with a pathogenic germline mutation in BRCA2. The top mutated somatic genes in BPBC patients were similar to those in UBC patients, including TP53 (58.8% in BPBC and 60.6% in UBC) and PI3KCA (47.1% in BPBC and 35.9% in UBC). CONCLUSIONS Our study suggested that BPBC may tend to be lobular carcinoma and have the HR+/HER2- subtype. Although our study did not find specific germline and somatic mutations in BPBC, more research is needed for verification.
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Affiliation(s)
- Bin Li
- Department of Breast and Urologic Medical OncologyFudan University Shanghai Cancer CenterShanghaiChina
- Department of Oncology, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Weiqi Xu
- Department of Oncology, Shanghai Medical CollegeFudan UniversityShanghaiChina
- Department of Hepatic SurgeryFudan University Shanghai Cancer CenterShanghaiChina
| | - Jianing Cao
- Department of Breast and Urologic Medical OncologyFudan University Shanghai Cancer CenterShanghaiChina
- Department of Oncology, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Duancheng Guo
- Department of Breast and Urologic Medical OncologyFudan University Shanghai Cancer CenterShanghaiChina
| | - Zhonghua Tao
- Department of Breast and Urologic Medical OncologyFudan University Shanghai Cancer CenterShanghaiChina
- Department of Oncology, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Juan Jin
- Department of Breast and Urologic Medical OncologyFudan University Shanghai Cancer CenterShanghaiChina
- Department of Oncology, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Xichun Hu
- Department of Breast and Urologic Medical OncologyFudan University Shanghai Cancer CenterShanghaiChina
- Department of Oncology, Shanghai Medical CollegeFudan UniversityShanghaiChina
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Turchiano A, Piglionica M, Martino S, Bagnulo R, Garganese A, De Luisi A, Chirulli S, Iacoviello M, Stasi M, Tabaku O, Meneleo E, Capurso M, Crocetta S, Lattarulo S, Krylovska Y, Lastella P, Forleo C, Stella A, Bukvic N, Simone C, Resta N. Impact of High-to-Moderate Penetrance Genes on Genetic Testing: Looking over Breast Cancer. Genes (Basel) 2023; 14:1530. [PMID: 37628581 PMCID: PMC10454640 DOI: 10.3390/genes14081530] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/19/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Breast cancer (BC) is the most common cancer and the leading cause of cancer death in women worldwide. Since the discovery of the highly penetrant susceptibility genes BRCA1 and BRCA2, many other predisposition genes that confer a moderate risk of BC have been identified. Advances in multigene panel testing have allowed the simultaneous sequencing of BRCA1/2 with these genes in a cost-effective way. Germline DNA from 521 cases with BC fulfilling diagnostic criteria for hereditary BC were screened with multigene NGS testing. Pathogenic (PVs) and likely pathogenic (LPVs) variants in moderate penetrance genes were identified in 15 out of 521 patients (2.9%), including 2 missense, 7 non-sense, 1 indel, and 3 splice variants, as well as two different exon deletions, as follows: ATM (n = 4), CHEK2 (n = 5), PALB2 (n = 2), RAD51C (n = 1), and RAD51D (n = 3). Moreover, the segregation analysis of PVs and LPVs into first-degree relatives allowed the detection of CHEK2 variant carriers diagnosed with in situ melanoma and clear cell renal cell carcinoma (ccRCC), respectively. Extended testing beyond BRCA1/2 identified PVs and LPVs in a further 2.9% of BC patients. In conclusion, panel testing yields more accurate genetic information for appropriate counselling, risk management, and preventive options than assessing BRCA1/2 alone.
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Affiliation(s)
- Antonella Turchiano
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Marilidia Piglionica
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Stefania Martino
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Rosanna Bagnulo
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Antonella Garganese
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Annunziata De Luisi
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Stefania Chirulli
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Matteo Iacoviello
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Michele Stasi
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Ornella Tabaku
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Eleonora Meneleo
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Martina Capurso
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Silvia Crocetta
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Simone Lattarulo
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Yevheniia Krylovska
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Patrizia Lastella
- Rare Disease Center, Internal Medicine Unit “C. Frugoni”, AOU Policlinico di Bari, 70124 Bari, Italy;
| | - Cinzia Forleo
- Cardiology Unit, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Alessandro Stella
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Nenad Bukvic
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
| | - Cristiano Simone
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
- Medical Genetics, National Institute of Gastroenterology, “S. de Bellis” Research Hospital, Via Turi 27, Castellana Grotte, 70013 Bari, Italy
| | - Nicoletta Resta
- Medical Genetic, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.T.); (M.P.); (S.M.); (R.B.); (A.G.); (A.D.L.); (S.C.); (M.I.); (M.S.); (O.T.); (E.M.); (M.C.); (S.C.); (S.L.); (Y.K.); (A.S.); (N.B.); (C.S.)
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Characterization of Aberrations in DNA Damage Repair Pathways in Gastrointestinal Stromal Tumors: The Clinicopathologic Relevance of γH2AX and 53BP1 in Correlation with Heterozygous Deletions of CHEK2, BRCA2, and RB1. Cancers (Basel) 2022; 14:cancers14071787. [PMID: 35406559 PMCID: PMC8997382 DOI: 10.3390/cancers14071787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/23/2022] [Accepted: 03/28/2022] [Indexed: 02/04/2023] Open
Abstract
Genetic aberrations involving DNA damage repair (DDR) remain underexplored in gastrointestinal stromal tumors (GISTs). We characterized DDR abnormalities using targeted next-generation sequencing and multiplex ligation-dependent probe amplification, and performed immunofluorescence (IF) and immunohistochemistry (IHC) analyses of γH2AX and 53BP1. Consistent with IF-validated nuclear co-localization, γH2AX and 53BP1 showed robust correlations in expression levels, as did both biomarkers between IF and IHC. Without recurrent pathogenic single-nucleotide variants, heterozygous deletions (HetDels) frequently targeted DNA damage-sensing genes, with CHEK2-HetDel being the most prevalent. Despite their chromosomal proximity, BRCA2 and RB1 were occasionally hit by HetDels and were seldom co-deleted. HetDels of CHEK2 and BRCA2 showed a preference for older age groups, while RB1-HetDel predominated in the non-gastric, high-risk, and 53BP1-overexpressing GISTs. Higher risk levels were consistently related to γ-H2AX or 53BP1 overexpression (all p < 0.01) in two validation cohorts, while only 53BP1 overexpression was associated with the deletion of KIT exon 11 (KITex11-del) among genotyped GISTs. Low expressers of dual biomarkers were shown by univariate analysis to have longer disease-free survival (p = 0.031). However, higher risk levels, epithelioid histology, and KITex11-del retained prognostic independence. Conclusively, IHC is a useful surrogate of laborious IF in the combined assessment of 53BP1 and γ-H2AX to identify potential DDR-defective GISTs, which were frequently aberrated by HetDels and a harbinger of progression.
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Clinicopathologic Profile of Breast Cancer in Germline ATM and CHEK2 Mutation Carriers. Genes (Basel) 2021; 12:genes12050616. [PMID: 33919281 PMCID: PMC8143279 DOI: 10.3390/genes12050616] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 04/15/2021] [Accepted: 04/20/2021] [Indexed: 01/07/2023] Open
Abstract
The most common breast cancer (BC) susceptibility genes beyond BRCA1/2 are ATM and CHEK2. For the purpose of exploring the clinicopathologic characteristics of BC developed by ATM or CHEK2 mutation carriers, we reviewed the archive of our Family Cancer Clinic. Since 2018, 1185 multi-gene panel tests have been performed. Nineteen ATM and 17 CHEK2 mutation carriers affected by 46 different BCs were identified. A high rate of bilateral tumors was observed in ATM (26.3%) and CHEK2 mutation carriers (41.2%). While 64.3% of CHEK2 tumors were luminal A-like, 56.2% of ATM tumors were luminal B-like/HER2-negative. Moreover, 21.4% of CHEK2-related invasive tumors showed a lobular histotype. About a quarter of all ATM-related BCs and a third of CHEK2 BCs were in situ carcinomas and more than half of ATM and CHEK2-related BCs were diagnosed at stage I-II. Finally, 63.2% of ATM mutation carriers and 64.7% of CHEK2 mutation carriers presented a positive BC family history. The biological and clinical characteristics of ATM and CHEK2-related tumors may help improve diagnosis, prognostication and targeted therapeutic approaches. Contralateral mastectomy should be considered and discussed with ATM and CHEK2 mutation carriers at the first diagnosis of BC.
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7
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Pócza T, Grolmusz VK, Papp J, Butz H, Patócs A, Bozsik A. Germline Structural Variations in Cancer Predisposition Genes. Front Genet 2021; 12:634217. [PMID: 33936164 PMCID: PMC8081352 DOI: 10.3389/fgene.2021.634217] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 03/08/2021] [Indexed: 12/14/2022] Open
Abstract
In addition to single nucleotide variations and small-scale indels, structural variations (SVs) also contribute to the genetic diversity of the genome. SVs, such as deletions, duplications, amplifications, or inversions may also affect coding regions of cancer-predisposing genes. These rearrangements may abrogate the open reading frame of these genes or adversely affect their expression and may thus act as germline mutations in hereditary cancer syndromes. With the capacity of disrupting the function of tumor suppressors, structural variations confer an increased risk of cancer and account for a remarkable fraction of heritability. The development of sequencing techniques enables the discovery of a constantly growing number of SVs of various types in cancer predisposition genes (CPGs). Here, we provide a comprehensive review of the landscape of germline SV types, detection methods, pathomechanisms, and frequency in CPGs, focusing on the two most common cancer syndromes: hereditary breast- and ovarian cancer and gastrointestinal cancers. Current knowledge about the possible molecular mechanisms driving to SVs is also summarized.
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Affiliation(s)
- Tímea Pócza
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary
| | - Vince Kornél Grolmusz
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary.,Hereditary Cancers Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
| | - János Papp
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary.,Hereditary Cancers Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
| | - Henriett Butz
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary.,Hereditary Cancers Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary.,Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
| | - Attila Patócs
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary.,Hereditary Cancers Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary.,Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
| | - Anikó Bozsik
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary.,Hereditary Cancers Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
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Stolarova L, Kleiblova P, Janatova M, Soukupova J, Zemankova P, Macurek L, Kleibl Z. CHEK2 Germline Variants in Cancer Predisposition: Stalemate Rather than Checkmate. Cells 2020; 9:cells9122675. [PMID: 33322746 PMCID: PMC7763663 DOI: 10.3390/cells9122675] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/04/2020] [Accepted: 12/10/2020] [Indexed: 12/15/2022] Open
Abstract
Germline alterations in many genes coding for proteins regulating DNA repair and DNA damage response (DDR) to DNA double-strand breaks (DDSB) have been recognized as pathogenic factors in hereditary cancer predisposition. The ATM-CHEK2-p53 axis has been documented as a backbone for DDR and hypothesized as a barrier against cancer initiation. However, although CHK2 kinase coded by the CHEK2 gene expedites the DDR signal, its function in activation of p53-dependent cell cycle arrest is dispensable. CHEK2 mutations rank among the most frequent germline alterations revealed by germline genetic testing for various hereditary cancer predispositions, but their interpretation is not trivial. From the perspective of interpretation of germline CHEK2 variants, we review the current knowledge related to the structure of the CHEK2 gene, the function of CHK2 kinase, and the clinical significance of CHEK2 germline mutations in patients with hereditary breast, prostate, kidney, thyroid, and colon cancers.
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Affiliation(s)
- Lenka Stolarova
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University, 12800 Prague, Czech Republic; (L.S.); (M.J.); (J.S.); (P.Z.)
- Laboratory of Cancer Cell Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic;
| | - Petra Kleiblova
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic;
| | - Marketa Janatova
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University, 12800 Prague, Czech Republic; (L.S.); (M.J.); (J.S.); (P.Z.)
| | - Jana Soukupova
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University, 12800 Prague, Czech Republic; (L.S.); (M.J.); (J.S.); (P.Z.)
| | - Petra Zemankova
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University, 12800 Prague, Czech Republic; (L.S.); (M.J.); (J.S.); (P.Z.)
| | - Libor Macurek
- Laboratory of Cancer Cell Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic;
| | - Zdenek Kleibl
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University, 12800 Prague, Czech Republic; (L.S.); (M.J.); (J.S.); (P.Z.)
- Correspondence: ; Tel.: +420-22496-745
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Nizic-Kos T, Besic N. ASO Author Reflections: Contralateral Prophylactic Mastectomy in Breast Cancer Patients with CHEK2 Gene Mutations. Ann Surg Oncol 2020; 28:2571-2572. [PMID: 33073339 DOI: 10.1245/s10434-020-09196-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Tea Nizic-Kos
- Department of Surgical Oncology, Institute of Oncology, Ljubljana, Slovenia
| | - Nikola Besic
- Department of Surgical Oncology, Institute of Oncology, Ljubljana, Slovenia.
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