scholarly journals Contribution of New Adenomatous Polyposis Predisposition Genes in an Unexplained Attenuated Spanish Cohort by Multigene Panel Testing

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Víctor Lorca ◽  
Daniel Rueda ◽  
Lorena Martín-Morales ◽  
María Jesús Fernández-Aceñero ◽  
Judith Grolleman ◽  
...  
Keyword(s):  
Adenomatous Polyposis ◽  
Panel Testing ◽  
Predisposition Genes ◽  
Multigene Panel Testing ◽  
Spanish Cohort ◽  
Multigene Panel

Germline pathogenic variants in cancer predisposition genes among women with invasive lobular cancer of breast.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 10581-10581
Author(s):  
Siddhartha Yadav ◽  
Chunling Hu ◽  
Susan M. Domchek ◽  
Jeffrey N. Weitzel ◽  
David Goldgar ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Population Based ◽  
Cancer Predisposition ◽  
Clinical Cohort ◽  
Breast Cancer Predisposition ◽  
Panel Testing ◽  
Pathogenic Variants ◽  
Predisposition Genes ◽  
Multigene Panel Testing ◽  
Multigene Panel

10581 Background: The prevalence of germline pathogenic variants (PVs) in cancer predisposition genes among women with invasive lobular breast cancer (ILC) and the risk of ILC in PV carriers is not well-defined. Methods: The study included 2,999 women with ILC and 32,544 unaffected controls from a population-based cohort; 3,796 women with ILC and 20,323 women with invasive ductal carcinoma (IDC) undergoing clinical multigene panel testing (clinical cohort); and 125,748 exome sequences from unrelated women without a cancer diagnosis in the gnomAD 3.0 dataset. Frequencies of germline PVs in breast cancer predisposition genes ( ATM, BARD1, BRCA1, BRCA2, BRIP1, CDH1, CHEK2, PALB2, PTEN, RAD51C, RAD51D, and TP53) were compared between women with ILC and unaffected controls in both cohorts and between women with ILC and IDC in the clinical cohort. Results: The frequency of PVs in breast cancer predisposition genes among women with ILC was 6.5% in the clinical cohort and 5.2% in the population-based cohort. In case-control analyses, CDH1 and BRCA2 PVs were associated with high risks of ILC (Odds ratio (OR) > 4), and CHEK2, ATM and PALB2 PVs were associated with moderate (OR = 2-4) risks. BRCA1 PVs and CHEK2 p.Ile157Thr were not associated with clinically relevant risks (OR < 2) of ILC. PV frequencies in these genes in ILC and IDC were similar except for PV frequencies in BRCA1 and CDH1. Conclusions: The study establishes that PVs in ATM, BRCA2, CDH1, CHEK2 and PALB2 are associated with an increased risk of ILC, whereas BRCA1 PVs are not. The similar overall PV frequencies for ILC and IDC suggest that cancer histology should not influence the decision to proceed with genetic testing. While, multigene panel testing may be appropriate for women with ILC, CDH1 should be specifically discussed in the context of low prevalence and attendant gastric cancer risk.

scholarly journals Prevalence of Germline Pathogenic Variants in Cancer Predisposing Genes in Czech and Belgian Pancreatic Cancer Patients

Cancers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 4430
Author(s):  
Greet Wieme ◽  
Jan Kral ◽  
Toon Rosseel ◽  
Petra Zemankova ◽  
Bram Parton ◽  
...  
Keyword(s):  
Ductal Adenocarcinoma ◽  
Multiple Primary Cancers ◽  
Cancer History ◽  
Panel Testing ◽  
Pathogenic Variants ◽  
Increased Risk ◽  
Predisposition Genes ◽  
Family Cancer History ◽  
Multigene Panel Testing ◽  
Multigene Panel

(1) Background: The proportion and spectrum of germline pathogenic variants (PV) associated with an increased risk for pancreatic ductal adenocarcinoma (PDAC) varies among populations. (2) Methods: We analyzed 72 Belgian and 226 Czech PDAC patients by multigene panel testing. The prevalence of pathogenic variants (PV) in relation to personal/family cancer history were evaluated. PDAC risks were calculated using both gnomAD-NFE and population-matched controls. (3) Results: In 35/298 (11.7%) patients a PV in an established PDAC-predisposition gene was found. BRCA1/2 PV conferred a high risk in both populations, ATM and Lynch genes only in the Belgian subgroup. PV in other known PDAC-predisposition genes were rarer. Interestingly, a high frequency of CHEK2 PV was observed in both patient populations. PV in PDAC-predisposition genes were more frequent in patients with (i) multiple primary cancers (12/38; 32%), (ii) relatives with PDAC (15/56; 27%), (iii) relatives with breast/ovarian/colorectal cancer or melanoma (15/86; 17%) but more rare in sporadic PDAC (5/149; 3.4%). PV in homologous recombination genes were associated with improved overall survival (HR = 0.51; 95% CI 0.34–0.77). (4) Conclusions: Our analysis emphasizes the value of multigene panel testing in PDAC patients, especially in individuals with a positive family cancer history, and underlines the importance of population-matched controls for risk assessment.

scholarly journals Multigene Panel Testing in Individuals With Hepatocellular Carcinoma Identifies Pathogenic Germline Variants

2021 ◽  
pp. 988-1000
Author(s):  
Anya Mezina ◽  
Neil Philips ◽  
Zoe Bogus ◽  
Noam Erez ◽  
Rui Xiao ◽  
...  
Keyword(s):  
Risk Factors ◽  
Hepatocellular Carcinoma ◽  
Clinical Management ◽  
Familial Cancer ◽  
Cancer Predisposition ◽  
Germline Variants ◽  
Panel Testing ◽  
Predisposition Genes ◽  
Multigene Panel Testing ◽  
Multigene Panel

PURPOSE Hepatocellular carcinoma (HCC) has well-defined environmental risk factors. In addition, epidemiologic studies have suggested hereditary risk factors. The goals of this study were to determine the rate of pathogenic and likely pathogenic (P/LP) germline variants in cancer predisposition genes in patients with HCC, possible enrichment of P/LP variants in particular genes, and potential impact on clinical management. MATERIALS AND METHODS A prospective study at a tertiary medical center enrolled 217 patients with a personal history of HCC. Multigene panel testing was performed for 134 cancer predisposition genes in all patients. The rate of P/LP variants was compared with population rates. A separate retrospective cohort included 219 patients with HCC who underwent testing at a commercial laboratory. RESULTS In the prospective cohort, P/LP germline variants were identified in 25 of 217 patients with HCC (11.5%). Four patients (1.8%) had P/LP variants in the highly penetrant cancer genes BRCA2 (n = 2), MSH6 (n = 1), and PMS2 (n = 1). In addition, multiple patients had P/LP variants in FANCA (n = 5) and BRIP1 (n = 4), which were significantly enriched in HCC compared with the general population. Detection of P/LP variants led to changes in clinical management in regard to therapy selection, screening recommendations, and cascade testing of relatives. In a separate retrospective analysis of 219 patients with HCC, 30 (13.7%) were positive for P/LP variants including 13 (5.9%) with highly penetrant genes APC (n = 2), BRCA1 (n = 1), BRCA2 (n = 6), MSH2 (n = 2), or TP53 (n = 2). CONCLUSION P/LP germline variants in cancer predisposition genes were detected in 11%-14% of patients with HCC. Inherited genetics should not be overlooked in HCC as there are important implications for precision treatment, future risk of cancers, and familial cancer risk.

Application of Multigene Panel Testing In Patients With High Risk for Hereditary Colorectal Cancer

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Ji Soo Park ◽  
Jung Won Park ◽  
Saeam Shin ◽  
Seung-Tae Lee ◽  
Sang Joon Shin ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
High Risk ◽  
Hereditary Colorectal Cancer ◽  
Panel Testing ◽  
Multigene Panel Testing ◽  
Multigene Panel

Informing models of cancer genetic care in the era of multigene panel testing with patient‐led recommendations

2020 ◽  
Author(s):  
Meghan Underhill‐Blazey ◽  
Traci Blonquist ◽  
Anu Chittenden ◽  
Rachel Pozzar ◽  
Manan Nayak ◽  
...  
Keyword(s):  
Cancer Genetic ◽  
Panel Testing ◽  
Multigene Panel Testing ◽  
Multigene Panel

scholarly journals Multigene Panel Testing Provides a New Perspective on Lynch Syndrome

2017 ◽  
Vol 35 (22) ◽  
pp. 2568-2575 ◽  
Author(s):  
Carin R. Espenschied ◽  
Holly LaDuca ◽  
Shuwei Li ◽  
Rachel McFarland ◽  
Chia-Ling Gau ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Endometrial Cancer ◽  
Lynch Syndrome ◽  
Population Based ◽  
Brca1 And Brca2 ◽  
Panel Testing ◽  
Multigene Panel Testing ◽  
New Perspective ◽  
Testing Criteria ◽  
Multigene Panel

Purpose Most existing literature describes Lynch syndrome (LS) as a hereditary syndrome leading to high risks of colorectal cancer (CRC) and endometrial cancer mainly as a result of mutations in MLH1 and MSH2. Most of these studies were performed on cohorts with disease suggestive of hereditary CRC and population-based CRC and endometrial cancer cohorts, possibly biasing results. We aimed to describe a large cohort of mismatch repair (MMR) mutation carriers ascertained through multigene panel testing, evaluate their phenotype, and compare the results with those of previous studies. Methods We retrospectively reviewed clinical histories of patients who had multigene panel testing, including the MMR and EPCAM genes, between March 2012 and June 2015 (N = 34,981) and performed a series of statistical comparisons. Results Overall, MSH6 mutations were most frequent, followed by PMS2, MSH2, MLH1, and EPCAM mutations, respectively. Of 528 patients who had MMR mutations, 63 (11.9%) had breast cancer only and 144 (27.3%) had CRC only. When comparing those with breast cancer only to those with CRC only, MSH6 and PMS2 mutations were more frequent than MLH1 and MSH2 mutations ( P = 2.3 × 10−5). Of the 528 patients, 22.2% met BRCA1 and BRCA2 ( BRCA1/2) testing criteria and not LS criteria, and 5.1% met neither BRCA1/2 nor LS testing criteria. MSH6 and PMS2 mutations were more frequent than MLH1 and MSH2 mutations among patients who met BRCA1/2 testing criteria but did not meet LS testing criteria ( P = 4.3 × 10−7). Conclusion These results provide a new perspective on LS and suggest that individuals with MSH6 and PMS2 mutations may present with a hereditary breast and ovarian cancer phenotype. These data also highlight the limitations of current testing criteria in identifying these patients, as well as the need for further investigation of cancer risks in patients with MMR mutations.

scholarly journals Stomaching Multigene Panel Testing: What to Do About CDH1?

2019 ◽  
Vol 112 (4) ◽  
pp. 325-326
Author(s):  
Douglas R Stewart ◽  
Megan N Frone ◽  
Stephen J Chanock
Keyword(s):  
Panel Testing ◽  
Multigene Panel Testing ◽  
Multigene Panel
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