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Hawranek C, Rosén A, Hajdarevic S. How hereditary cancer risk disclosure to relatives is handled in practice - Patient perspectives from a Swedish cancer genetics clinic. PATIENT EDUCATION AND COUNSELING 2024; 126:108319. [PMID: 38788311 DOI: 10.1016/j.pec.2024.108319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 04/14/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024]
Abstract
OBJECTIVES Hereditary cancer risks can be effectively managed if at-risk relatives enroll in surveillance and preventive care. Family-mediated risk disclosure has internationally been shown to be incomplete, selective and leave over a third of eligible at-risk individuals without access to genetic counseling. We explored patients handling of cancer risk information in practice. METHODS We conducted twelve semi-structured interviews with patients who had completed their genetic counseling and been asked to disclose risk information to relatives. Questions were designed to investigate lived experiences of communicating hereditary risk and focused on disclosure strategies, intrafamilial interactions and emotional responses. RESULTS Qualitative content analysis yielded five categories. These span personal fears, shared responsibilities, feeling of empowerment, innovative solutions and unmet needs. Patients put high value on collaboration with their genetic healthcare professionals but also solicited better overview of the counseling process and more personalized, case-tailored information. CONCLUSIONS Our results add novel insights about the practical strategies employed by genetic counselees and their motivations behind disclosing hereditary risk information to relatives. PRACTICE IMPLICATIONS A patient-centered cancer genetics care would clarify roles and responsibilities around risk disclosure, inform counselees about the process upfront and tailor information to offer case-specific data with the family's inheritance pattern explained.
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Affiliation(s)
- Carolina Hawranek
- Department of Diagnostics and Intervention, Oncology, Umeå University, Umeå, Sweden.
| | - Anna Rosén
- Department of Diagnostics and Intervention, Oncology, Umeå University, Umeå, Sweden
| | - Senada Hajdarevic
- Department of Nursing, Umeå University, Umeå, Sweden; Department of Public Health and Clinical Medicine, Family Medicine, Umeå University, Umeå, Sweden
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Trevisan L, Godino L, Battistuzzi L, Innella G, Luppi E, Buzzatti G, Gismondi V, Blondeaux E, Bonelli LA, Turchetti D, Varesco L. Cascade testing in Italian Hereditary Breast Ovarian Cancer families: a missed opportunity for cancer prevention? Fam Cancer 2024; 23:197-207. [PMID: 37968543 DOI: 10.1007/s10689-023-00349-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 10/24/2023] [Indexed: 11/17/2023]
Abstract
Healthy carriers of BRCA1/2 pathogenic variants (PVs) may benefit from risk-reducing measures of proven efficacy. The main approach to identify these individuals is cascade testing, and strategies to support this complex process are under investigation. In Italy, cascade testing has received little attention; therefore, we analyzed the uptake and characteristics of BRCA1/2 cascade testing in families diagnosed with HBOC between 2017 and 2019 at two Italian genetics centers. All blood relatives aged 18 years or older at September 2022 and who could be involved in the first step of cascade testing (i.e., all the living relatives closest to the proband) were included. In addition to first-degree relatives, individuals who were second-, third- or fourth-degree relatives were included if the closest relative(s) was/were deceased. Overall, 213 families were included (103, Genoa; 110, Bologna). Most probands were women affected by breast and/or ovarian cancer (86.4%, Genoa; 84.5%, Bologna), and the branch segregating the PV was known/suspected in 62% of families (62.1%, Genoa; 60.9%, Bologna). Overall, the uptake of cascade testing was 22.8% (25.8%, Genoa; 19.9%, Bologna; OR = 0.59: 95%CI 0.43-0.82). It was strongly associated with female gender (OR = 3.31, 95%CI 2.38-4.59), age ≤ 70 years (< 30 years OR = 3.48, 95%CI 1.85-6.56; 30-70 years OR = 3.08, 95%CI 2.01-4.71), first-degree relationship with the proband (OR = 16.61, 95%CI 10.50-26.28) and segregation of the PV in both the maternal (OR = 2.54, 95%CI 1.72-3.75) and the paternal branch (OR = 4.62, 95%CI 3.09-6.91). These real-world data may be important to inform the design and implementation of strategies aimed at improving the uptake of HBOC cascade testing in Italy.
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Affiliation(s)
- Lucia Trevisan
- Unit of Hereditary Cancer, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Lea Godino
- Unit of Medical Genetics, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Linda Battistuzzi
- Unit of Hereditary Cancer, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Giovanni Innella
- Unit of Medical Genetics, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Bologna, Italy
| | - Elena Luppi
- Unit of Medical Genetics, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Bologna, Italy
| | - Giulia Buzzatti
- Unit of Hereditary Cancer, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Viviana Gismondi
- Unit of Hereditary Cancer, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Eva Blondeaux
- U.O. Epidemiologia Clinica, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, Genova, 16132, Italy.
| | - Luigina Ada Bonelli
- U.O. Epidemiologia Clinica, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, Genova, 16132, Italy
| | - Daniela Turchetti
- Unit of Medical Genetics, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Bologna, Italy
| | - Liliana Varesco
- Unit of Hereditary Cancer, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
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Kurian AW, Abrahamse P, Furgal A, Ward KC, Hamilton AS, Hodan R, Tocco R, Liu L, Berek JS, Hoang L, Yussuf A, Susswein L, Esplin ED, Slavin TP, Gomez SL, Hofer TP, Katz SJ. Germline Genetic Testing After Cancer Diagnosis. JAMA 2023; 330:43-51. [PMID: 37276540 PMCID: PMC10242510 DOI: 10.1001/jama.2023.9526] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/18/2023] [Indexed: 06/07/2023]
Abstract
Importance Germline genetic testing is recommended by practice guidelines for patients diagnosed with cancer to enable genetically targeted treatment and identify relatives who may benefit from personalized cancer screening and prevention. Objective To describe the prevalence of germline genetic testing among patients diagnosed with cancer in California and Georgia between 2013 and 2019. Design, Setting, and Participants Observational study including patients aged 20 years or older who had been diagnosed with any type of cancer between January 1, 2013, and March 31, 2019, that was reported to statewide Surveillance, Epidemiology, and End Results registries in California and Georgia. These patients were linked to genetic testing results from 4 laboratories that performed most germline testing for California and Georgia. Main Outcomes and Measures The primary outcome was germline genetic testing within 2 years of a cancer diagnosis. Testing trends were analyzed with logistic regression modeling. The results of sequencing each gene, including variants associated with increased cancer risk (pathogenic results) and variants whose cancer risk association was unknown (uncertain results), were evaluated. The genes were categorized according to their primary cancer association, including breast or ovarian, gastrointestinal, and other, and whether practice guidelines recommended germline testing. Results Among 1 369 602 patients diagnosed with cancer between 2013 and 2019 in California and Georgia, 93 052 (6.8%) underwent germline testing through March 31, 2021. The proportion of patients tested varied by cancer type: male breast (50%), ovarian (38.6%), female breast (26%), multiple (7.5%), endometrial (6.4%), pancreatic (5.6%), colorectal (5.6%), prostate (1.1%), and lung (0.3%). In a logistic regression model, compared with the 31% (95% CI, 30%-31%) of non-Hispanic White patients with male breast cancer, female breast cancer, or ovarian cancer who underwent testing, patients of other races and ethnicities underwent testing less often: 22% (95% CI, 21%-22%) of Asian patients, 25% (95% CI, 24%-25%) of Black patients, and 23% (95% CI, 23%-23%) of Hispanic patients (P < .001 using the χ2 test). Of all pathogenic results, 67.5% to 94.9% of variants were identified in genes for which practice guidelines recommend testing and 68.3% to 83.8% of variants were identified in genes associated with the diagnosed cancer type. Conclusions and Relevance Among patients diagnosed with cancer in California and Georgia between 2013 and 2019, only 6.8% underwent germline genetic testing. Compared with non-Hispanic White patients, rates of testing were lower among Asian, Black, and Hispanic patients.
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Affiliation(s)
- Allison W. Kurian
- Department of Medicine, School of Medicine, Stanford University, Stanford, California
- Department of Epidemiology and Population Health, School of Medicine, Stanford University, Stanford, California
| | - Paul Abrahamse
- Department of Health Management and Policy, School of Public Health, University of Michigan, Ann Arbor
| | - Allison Furgal
- Department of Health Management and Policy, School of Public Health, University of Michigan, Ann Arbor
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Kevin C. Ward
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | - Ann S. Hamilton
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles
| | - Rachel Hodan
- Department of Pediatrics, School of Medicine, Stanford University, Stanford, California
| | - Rachel Tocco
- Department of Health Management and Policy, School of Public Health, University of Michigan, Ann Arbor
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Lihua Liu
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles
| | - Jonathan S. Berek
- Department of Obstetrics and Gynecology, School of Medicine, Stanford University, Stanford, California
| | | | | | | | | | | | - Scarlett L. Gomez
- Department of Epidemiology and Biostatistics, University of California, San Francisco
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco
| | - Timothy P. Hofer
- Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor
- Center for Clinical Management Research, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
| | - Steven J. Katz
- Department of Health Management and Policy, School of Public Health, University of Michigan, Ann Arbor
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
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Karpel HC, Smith M, Brodsky A, Pothuri B. Improving genetic testing following abnormal mismatch repair immunohistochemistry results in endometrial cancer. Gynecol Oncol 2023; 175:20-24. [PMID: 37290248 DOI: 10.1016/j.ygyno.2023.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 04/12/2023] [Accepted: 04/16/2023] [Indexed: 06/10/2023]
Abstract
OBJECTIVES Although universal mismatch repair (MMR) immunohistochemistry (IHC) in endometrial cancer began at our institution in July 2015, not all eligible patients were referred for genetic testing (GT). In April 2017, genetic counselors obtained IHC data and contacted physicians to approve genetic counseling referrals (GCRs) for Lynch Syndrome (LS) in eligible patients. We assessed if this protocol increased frequency of GCRs and GT in patients with abnormal MMR IHC. METHODS We retrospectively (7/2015-5/2022) identified patients with abnormal MMR IHC at a large urban hospital. GCRs and GT were compared between cases from 7/2015-4/2017 (pre-protocol) and 5/2017-5/2022 (post-protocol) with chi-square and Fisher's exact tests. RESULTS Of 794 patients with IHC testing, 177 (22.3%) had abnormal MMR results with 46 (26.0%) meeting criteria for LS screening with GT. Of 46 patients, 16 (34.8%) were identified prior to and 30 (65.2%) after the protocol initiation. GCRs significantly increased from 11/16 (68.8%) to 29/30 (96.7%) in the pre-protocol versus post-protocol groups, p = 0.02. There was no statistically significant difference in GT between groups (10/16, 62.5% vs 26/30, 86.7%, p = 0.07). Of 36 patients who underwent GT, 16 (44.4%) had LS: MSH6, 9; MSH2, 4; PMS2, 2; MLH1, 1. CONCLUSIONS Increased frequency of GCRs was observed following the change in protocol, which is important as LS screening has clinical implications for patients and their families. Despite this additional effort, approximately 15% who met criteria did not undergo GT; further efforts such as universal germline testing in patients with endometrial cancer should be considered.
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Affiliation(s)
- Hannah C Karpel
- NYU Grossman School of Medicine, New York, NY, United States
| | - Maria Smith
- NYU Langone Health, New York, NY, United States
| | - Allison Brodsky
- University of California San Diego Medical Center, San Diego, CA, United States
| | - Bhavana Pothuri
- NYU Langone Health, New York, NY, United States; Perlmutter Cancer Center, New York, NY, United States.
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Katz SJ, Abrahamse P, Hodan R, Kurian AW, Rankin A, Tocco RS, Rios-Ventura S, Ward KC, An LC. Cascade Genetic Risk Education and Testing in Families With Hereditary Cancer Syndromes: A Pilot Study. JCO Oncol Pract 2023; 19:e848-e858. [PMID: 36921235 PMCID: PMC10332838 DOI: 10.1200/op.22.00677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 02/07/2023] [Indexed: 03/17/2023] Open
Abstract
PURPOSE Cascade genetic risk evaluation in families with hereditary cancer can reduce the burden of disease but the rate of germline genetic testing in relatives of patients at risk is low. METHODS We identified all 277 women diagnosed with breast cancer in Georgia in 2017 who linked to a clinically actionable germline pathogenic variant through a Surveillance, Epidemiology, and End Results registry-variant linkage initiative. We surveyed them, and then invited eligible respondents to an online platform hosted by a navigator that offered cancer genetic risk education and germline genetic testing to untested relatives. We randomly assigned patient-family clusters at the time of the patient enrollment offer to free versus $50 (USD) test cost. Patients invited relatives to join the study through personalized e-mail. Enrolled relatives received online cancer genetic education and the opportunity to order clinical germline genetic testing through the platform. The primary outcome was the number of relatives who ordered genetic testing. RESULTS One hundred twenty-five of 277 patients completed surveys (45.2%). Most respondents were eligible for the trial offer (113 of 125; 90.4%). In the free testing arm, 20 of 56 eligible patients participated (35.7% of eligible respondents) and they invited 28 relatives: 12 relatives enrolled and 10 ordered testing. In the $50 (USD) arm, 16 of 57 eligible patients participated (28.1%) and they invited 38 relatives: 18 relatives enrolled and 17 ordered testing. CONCLUSION Cascade genetic testing in families with hereditary cancer syndromes accrued through a population-based cancer registry can be achieved through an online platform that offers genetic risk education and low-cost testing to relatives. A modest charge did not appear to influence the percentage of participating patients, numbers of participating relatives, and numbers of relatives who received genetic testing.
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Affiliation(s)
- Steven J. Katz
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI
- Department of Health Management and Policy, School of Public Health, University of Michigan Ann Arbor, MI
| | - Paul Abrahamse
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI
| | - Rachel Hodan
- Cancer Genetics, Stanford Health Care, Stanford, CA
| | - Allison W. Kurian
- Department of Medicine, Stanford University, Stanford, CA
- Department of Epidemiology and Population Health, Stanford University, Stanford, CA
| | - Aaron Rankin
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI
| | - Rachel S. Tocco
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI
| | - Sonia Rios-Ventura
- Department of Epidemiology and Population Health, Stanford University, Stanford, CA
| | - Kevin C. Ward
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA
| | - Lawrence C. An
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI
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Ossa Gomez CA, Achatz MI, Hurtado M, Sanabria-Salas MC, Sullcahuaman Y, Chávarri-Guerra Y, Dutil J, Nielsen SM, Esplin ED, Michalski ST, Bristow SL, Hatchell KE, Nussbaum RL, Pineda-Alvarez DE, Ashton-Prolla P. Germline Pathogenic Variant Prevalence Among Latin American and US Hispanic Individuals Undergoing Testing for Hereditary Breast and Ovarian Cancer: A Cross-Sectional Study. JCO Glob Oncol 2022; 8:e2200104. [PMID: 35867948 PMCID: PMC9812461 DOI: 10.1200/go.22.00104] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/13/2022] [Accepted: 06/15/2022] [Indexed: 01/07/2023] Open
Abstract
PURPOSE To report on pathogenic germline variants detected among individuals undergoing genetic testing for hereditary breast and/or ovarian cancer (HBOC) from Latin America and compare them with self-reported Hispanic individuals from the United States. METHODS In this cross-sectional study, unrelated individuals with a personal/family history suggestive of HBOC who received clinician-ordered germline multigene sequencing were grouped according to the location of the ordering physician: group A, Mexico, Central America, and the Caribbean; group B, South America; and group C, United States with individuals who self-reported Hispanic ethnicity. Relatives who underwent cascade testing were analyzed separately. RESULTS Among 24,075 unrelated probands across all regions, most were female (94.9%) and reported a personal history suggestive of HBOC (range, 65.0%-80.6%); the mean age at testing was 49.1 ± 13.1 years. The average number of genes analyzed per patient was highest in group A (A 63 ± 28, B 56 ± 29, and C 40 ± 28). Between 9.1% and 18.7% of patients had pathogenic germline variants in HBOC genes (highest yield in group A), with the majority associated with high HBOC risk. Compared with US Hispanics individuals the overall yield was significantly higher in both Latin American regions (A v C P = 1.64×10-9, B v C P < 2.2×10-16). Rates of variants of uncertain significance were similar across all three regions (33.7%-42.6%). Cascade testing uptake was low in all regions (A 6.6%, B 4.5%, and C 1.9%). CONCLUSION This study highlights the importance of multigene panel testing in Latin American individuals with newly diagnosed or history of HBOC, who can benefit from medical management changes including targeted therapies, eligibility to clinical trials, risk-reducing surgeries, surveillance and prevention of secondary malignancy, and genetic counseling and subsequent cascade testing of at-risk relatives.
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Affiliation(s)
| | - Maria Isabel Achatz
- Department of Oncology, Hospital Sírio-Libanês, Brasília, Distrito Federal, Brazil
| | - Mabel Hurtado
- Instituto Oncológico, Fundación Arturo López Pérez, Santiago, Chile
| | | | - Yasser Sullcahuaman
- Universidad Peruana de Ciencias Aplicadas, Lima, Peru
- Instituto de Investigación Genomica, Lima, Peru
| | - Yanin Chávarri-Guerra
- Department of Hemato-Oncology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Julie Dutil
- Cancer Biology Division, Ponce Research Institute, Ponce Health Sciences University, Pone, Puerto Rico
| | | | | | | | | | | | | | | | - Patricia Ashton-Prolla
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Serviço de Genética Médica e Laboratório de Medicina Genômica, Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
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Schmidlen TJ, Bristow SL, Hatchell KE, Esplin ED, Nussbaum RL, Haverfield EV. The Impact of Proband Indication for Genetic Testing on the Uptake of Cascade Testing Among Relatives. Front Genet 2022; 13:867226. [PMID: 35783293 PMCID: PMC9243226 DOI: 10.3389/fgene.2022.867226] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/18/2022] [Indexed: 11/17/2022] Open
Abstract
Although multiple factors can influence the uptake of cascade genetic testing, the impact of proband indication has not been studied. We performed a retrospective, cross-sectional study comparing cascade genetic testing rates among relatives of probands who received either diagnostic germline testing or non-indication-based proactive screening via next-generation sequencing (NGS)-based multigene panels for hereditary cancer syndromes (HCS) and/or familial hypercholesterolemia (FH). The proportion of probands with a medically actionable (positive) finding were calculated based on genes associated with Centers for Disease Control and Prevention (CDC) Tier 1 conditions, HCS genes, and FH genes. Among probands with a positive finding, cascade testing rates and influencing factors were assessed. A total of 270,715 probands were eligible for inclusion in the study (diagnostic n = 254,281,93.9%; proactive n = 16,434, 6.1%). A positive result in a gene associated with a CDC Tier 1 condition was identified in 10,520 diagnostic probands (4.1%) and 337 proactive probands (2.1%), leading to cascade testing among families of 3,305 diagnostic probands (31.4%) and 36 proactive probands (10.7%) (p < 0.0001). A positive result in an HCS gene was returned to 23,272 diagnostic probands (9.4%) and 970 proactive probands (6.1%), leading to cascade testing among families of 6,611 diagnostic probands (28.4%) and 89 proactive probands (9.2%) (p < 0.0001). Cascade testing due to a positive result in an HCS gene was more commonly pursued when the diagnostic proband was White, had a finding in a gene associated with a CDC Tier 1 condition, or had a personal history of cancer, or when the proactive proband was female. A positive result in an FH gene was returned to 1,647 diagnostic probands (25.3%) and 67 proactive probands (0.62%), leading to cascade testing among families of 360 diagnostic probands (21.9%) and 4 proactive probands (6.0%) (p < 0.01). Consistently higher rates of cascade testing among families of diagnostic probands may be due to a perceived urgency because of personal or family history of disease. Due to the proven clinical benefit of cascade testing, further research on obstacles to systematic implementation and uptake of testing for relatives of any proband with a medically actionable variant is warranted.
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Raz A, Timmermans S, Eyal G, Brothers K, Minari J. Challenges for precision public health communication in the era of genomic medicine. Genet Med 2022; 24:1814-1820. [PMID: 35657379 DOI: 10.1016/j.gim.2022.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 11/18/2022] Open
Abstract
Although still in the early stages of development, the advent of fast, high-output, and cost-effective next-generation DNA sequencing technology is moving precision medicine into public health. Before this shift toward next-generation sequencing in public health settings, individual patients met geneticists after showing symptoms and through limited family screening. In the new era of precision public health, everyone is a possible participant in genetic sequencing, simply by being born (newborn screening), by donating blood (biobanking), or through population screening. These initiatives are increasingly offered to individuals throughout their life and more individuals are encountering opportunities to use DNA sequencing. This article raises awareness of these growing areas and calls for different models of public engagement and communication about genomics, including screening asymptomatic populations, obtaining consent for unspecified and unforeseen future uses of genomic data, and managing variants of uncertain significance. Given that such communication challenges loom large, established norms of practice in genomic medicine and research should be reconsidered.
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Affiliation(s)
- Aviad Raz
- Department of Sociology & Anthropology, Ben-Gurion University of the Nagev, Beersheba, Israel.
| | | | - Gil Eyal
- Precision Medicine & Society Program, Department of Sociology, Columbia University, New York, NY
| | - Kyle Brothers
- Department of Pediatrics, School of Medicine, University of Louisville, Louisville, KY
| | - Jusaku Minari
- Uehiro Research Division for iPS Cell Ethics, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
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Hardy MW, Peshkin BN, Rose E, Ladd MK, Binion S, Tynan M, McBride CM, Grinzaid KA, Schwartz MD. Attitudes and interest in incorporating BRCA1/2 cancer susceptibility testing into reproductive carrier screening for Ashkenazi Jewish men and women. J Community Genet 2022; 13:281-292. [PMID: 35486291 PMCID: PMC9051789 DOI: 10.1007/s12687-022-00590-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 04/19/2022] [Indexed: 10/31/2022] Open
Abstract
Pathogenic variants in the BRCA1 and BRCA2 (BRCA1/2) genes are associated with elevated cancer risks in men and women. Due to a founder effect, Ashkenazi Jewish individuals are at higher risk for carrying three specific BRCA1/2 pathogenic variants. There have been recent calls for population screening in this population because many carriers do not have family histories suggestive of hereditary cancer. One approach could be to integrate optional BRCA1/2 testing into routinely offered reproductive carrier screening for recessive and X-linked disorders. However, the differing goals of these types of testing (i.e., personal health risks versus family planning) raise questions about the implications for patient education and informed consent. To this end, we aimed to determine interest, attitudes, and preferences regarding integrating such testing by electronically surveying 331 Ashkenazi Jewish participants in JScreen - a national, not-for-profit, at-home carrier screening program focused on genetic risks in Jewish communities. We found that while 41% of participants had plans to pursue BRCA1/2 testing, 93% would have opted for such testing if offered as an add-on to reproductive carrier screening. This was particularly true of those with higher perceived cancer risk and more positive attitudes toward genetic testing. With respect to preferences about delivery of this service, more than 85% of participants preferred remote (telephone, print, or web-based) genetic education rather than traditional genetic counseling. These results suggest that offering optional BRCA1/2 testing within the context of reproductive carrier screening might provide opportunities for cancer prevention without overburdening scarce genetic counseling resources.
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Affiliation(s)
- Melanie W Hardy
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Beth N Peshkin
- Department of Oncology, Georgetown Lombardi Comprehensive Cancer, Georgetown University, 2115 Wisconsin Avenue, Suite 300, Washington, DC, 20007, USA
| | - Esther Rose
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Mary Kathleen Ladd
- Department of Oncology, Georgetown Lombardi Comprehensive Cancer, Georgetown University, 2115 Wisconsin Avenue, Suite 300, Washington, DC, 20007, USA
| | - Savannah Binion
- Department of Oncology, Georgetown Lombardi Comprehensive Cancer, Georgetown University, 2115 Wisconsin Avenue, Suite 300, Washington, DC, 20007, USA
| | - Mara Tynan
- Department of Oncology, Georgetown Lombardi Comprehensive Cancer, Georgetown University, 2115 Wisconsin Avenue, Suite 300, Washington, DC, 20007, USA
| | - Colleen M McBride
- Department of Behavioral Sciences and Health Education, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Karen A Grinzaid
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Marc D Schwartz
- Department of Oncology, Georgetown Lombardi Comprehensive Cancer, Georgetown University, 2115 Wisconsin Avenue, Suite 300, Washington, DC, 20007, USA.
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Zischke J, White N, Gordon L. Accounting for Intergenerational Cascade Testing in Economic Evaluations of Clinical Genomics: A Scoping Review. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2022; 25:944-953. [PMID: 35667782 DOI: 10.1016/j.jval.2021.11.1353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 10/25/2021] [Accepted: 11/03/2021] [Indexed: 06/15/2023]
Abstract
OBJECTIVES Clinical genomics is emerging as a diagnostic tool in the identification of blood relatives at risk of developing heritable diseases. Our objective was to identify how genetic cascade screening has been incorporated into health economic evaluations. METHODS A scoping review was conducted to identify how multiple generations of a family were included in economic evaluations of clinical genomic sequencing, how many and which relatives were included, and uptake rates. Databases were searched for full economic evaluations of genetic interventions that screened multiple generations of families and were in English language, and no restrictions were made for disease or publication type. Data were synthesized using a narrative approach. RESULTS Twenty-five studies were included covering a range of diseases in various countries. Markov cohort models were mostly used with hypothetical populations and unsupported by clinical evidence. Cascade testing was either the primary intervention or secondary to the index cases. The number and type of relatives were based on assumptions or identified through population or family records, clinical registry data, or clinical literature. Studies included only immediate family members and the uptake of testing ranged between 20% and 100%. All interventions were reported as cost-effective, and a higher number of relatives was a key driver. CONCLUSIONS Several economic evaluations have considered the impacts of cascade testing interventions within clinical genomics. Ideally, models supported with high-quality clinical data are needed and, in their absence, transparent and justifiable assumptions of uptake rates and choices about including relatives. Consideration of more appropriate modeling types is required.
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Affiliation(s)
- Jason Zischke
- Health Economics Group, QIMR Berghofer Medical Research Institute, Brisbane, Australia; School of Public Health and Social Work, Queensland University of Technology, Brisbane, Australia.
| | - Nicole White
- Centre for Healthcare Transformation, School of Public Health and Social Work and Australian Centre for Health Services Innovation, Queensland University of Technology, Brisbane, Australia
| | - Louisa Gordon
- Health Economics Group, QIMR Berghofer Medical Research Institute, Brisbane, Australia; School of Nursing, Queensland University of Technology, Brisbane, Australia; School of Public Health, The University of Queensland, Brisbane, Australia
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Hawranek C, Hajdarevic S, Rosén A. A Focus Group Study of Perceptions of Genetic Risk Disclosure in Members of the Public in Sweden: "I'll Phone the Five Closest Ones, but What Happens to the Other Ten?". J Pers Med 2021; 11:jpm11111191. [PMID: 34834542 PMCID: PMC8622605 DOI: 10.3390/jpm11111191] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 12/14/2022] Open
Abstract
This study explores perceptions and preferences on receiving genetic risk information about hereditary cancer risk in members of the Swedish public. We conducted qualitative content analysis of five focus group discussions with participants (n = 18) aged between 24 and 71 years, recruited from various social contexts. Two prominent phenomena surfaced around the interplay between the three stakeholders involved in risk disclosure: the individual, healthcare, and the relative at risk. First, there is a genuine will to share risk information that can benefit others, even if this is difficult and causes discomfort. Second, when the duty to inform becomes overwhelming, compromises are made, such as limiting one’s own responsibility of disclosure or projecting the main responsibility onto another party. In conclusion, our results reveal a discrepancy between public expectations and the actual services offered by clinical genetics. These expectations paired with desire for a more personalized process and shared decision-making highlight a missing link in today’s risk communication and suggest a need for developed clinical routines with stronger healthcare–patient collaboration. Future research needs to investigate the views of genetic professionals on how to address these expectations to co-create a transparent risk disclosure process which can realize the full potential of personalized prevention.
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Affiliation(s)
- Carolina Hawranek
- Department of Radiation Sciences, Oncology, Umeå University, 901 87 Umeå, Sweden;
- Correspondence: ; Tel.: +46-76-89-34-504
| | - Senada Hajdarevic
- Department of Nursing, Umeå University, 901 87 Umeå, Sweden;
- Department of Public Health and Clinical Medicine, Family Medicine, Umeå University, 901 87 Umeå, Sweden
| | - Anna Rosén
- Department of Radiation Sciences, Oncology, Umeå University, 901 87 Umeå, Sweden;
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12
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Mittal A, Deo SVS, Gogia A, Batra A, Kumar A, Bhoriwal S, Deb KS, Dhamija E, Thulkar S, Ramprasad VL, Olopade O, Pramanik R. Profile of Pathogenic Mutations and Evaluation of Germline Genetic Testing Criteria in Consecutive Breast Cancer Patients Treated at a North Indian Tertiary Care Center. Ann Surg Oncol 2021; 29:1423-1432. [PMID: 34601666 PMCID: PMC8487333 DOI: 10.1245/s10434-021-10870-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/16/2021] [Indexed: 01/14/2023]
Abstract
Background The burden of hereditary breast cancer in India is not well defined. Moreover, genetic testing criteria (National Comprehensive Cancer Network [NCCN] and Mainstreaming Cancer Genetics [MCG] Plus) have never been validated in the Indian population. Methods All new female breast cancer patients from 1st March 2019 to 28th February 2020 were screened. Those providing informed consent and without previous genetic testing were recruited. Multigene panel testing (107 genes) by next-generation sequencing was performed for all patients. The frequency of pathogenic/likely pathogenic (P/LP) mutations between patients qualifying and not qualifying the testing criteria was compared and their sensitivity was computed. Results Overall, 275 breast cancer patients were screened and 236 patients were included (median age 45 years); 30 patients did not consent and 9 patients previously underwent genetic testing. Thirty-four (14%) women had a positive family history and 35% had triple-negative breast cancer. P/LP mutations were found in 44/236 (18.64%) women; mutations in BRCA1 (22/47, 46.8%) and BRCA2 (9/47, 19.1%) were the most common, with 34% of mutations present in non-BRCA genes. Patients qualifying the testing criteria had a higher risk of having a P/LP mutation (NCCN: 23.6% vs. 7.04%, p = 0.03; MCG plus: 24.8% vs. 7.2%, p = 0.01). The sensitivity of the NCCN criteria was 88.6% (75.4–96.2) and 86.36% (72.65–94.83) for MCG plus. More than 95% sensitivity was achieved if all women up to 60 years of age were tested. Cascade testing was performed in 31 previous (16/44 families), with 23 testing positive. Conclusions The frequency of P/LP mutations in India is high, with significant contribution of non-BRCA genes. Testing criteria need modification to expand access to testing. Supplementary Information The online version contains supplementary material available at 10.1245/s10434-021-10870-w.
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Affiliation(s)
- Abhenil Mittal
- Department of Medical Oncology, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - S V S Deo
- Department of Surgical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Ajay Gogia
- Department of Medical Oncology, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Atul Batra
- Department of Medical Oncology, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Akash Kumar
- Department of Medical Oncology, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Sandeep Bhoriwal
- Department of Surgical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Koushik Sinha Deb
- Department of Psychiatry, All India Institute of Medical Sciences, New Delhi, India
| | - Ekta Dhamija
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India
| | - Sanjay Thulkar
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India
| | | | - Olufunmilayo Olopade
- Center for Clinical Cancer Genetics and Global Health, University of Chicago, Chicago, IL, USA
| | - Raja Pramanik
- Department of Medical Oncology, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India.
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13
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O'Neill SC, Hamilton JG, Conley CC, Peshkin BN, Sacca R, McDonnell GA, Isaacs C, Robson ME, Tercyak KP. Improving our model of cascade testing for hereditary cancer risk by leveraging patient peer support: a concept report. Hered Cancer Clin Pract 2021; 19:40. [PMID: 34565430 PMCID: PMC8474818 DOI: 10.1186/s13053-021-00198-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 09/16/2021] [Indexed: 01/22/2023] Open
Abstract
Consensus and evidence suggest that cascade testing is critical to achieve the promise of cancer genetic testing. However, barriers to cascade testing include effective family communication of genetic risk information and family members' ability to cope with genetic risk. These barriers are further complicated by the developmental needs of unaffected family members during critical windows for family communication and adaptation. Peer support could address these barriers. We provide two illustrative examples of ongoing BRCA1/2-related clinical trials that apply a peer support model to improve family communication and functioning. Peer support can augment currently available genetic services to facilitate adjustment to and effective use of cancer genetic risk information. Importantly, this scalable approach can address the presence of cancer risk within families across multiple developmental stages. This applies a family-centered perspective that accommodates all potentially at-risk relatives. This peer support model can be further applied to emerging topics in clinical genetics to expand reach and impact.
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Affiliation(s)
- Suzanne C O'Neill
- Georgetown Lombardi Comprehensive Cancer Center, Washington, D.C, USA.
| | | | - Claire C Conley
- Georgetown Lombardi Comprehensive Cancer Center, Washington, D.C, USA
| | - Beth N Peshkin
- Georgetown Lombardi Comprehensive Cancer Center, Washington, D.C, USA
| | - Rosalba Sacca
- Memorial Sloan Kettering Cancer Center, New York, USA
| | | | - Claudine Isaacs
- Georgetown Lombardi Comprehensive Cancer Center, Washington, D.C, USA
| | - Mark E Robson
- Memorial Sloan Kettering Cancer Center, New York, USA
| | - Kenneth P Tercyak
- Georgetown Lombardi Comprehensive Cancer Center, Washington, D.C, USA
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14
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Makhnoon S, Tran G, Levin B, Mattie KD, Dreyer B, Volk RJ, Grana G, Arun BK, Peterson SK. Uptake of cancer risk management strategies among women who undergo cascade genetic testing for breast cancer susceptibility genes. Cancer 2021; 127:3605-3613. [PMID: 34157779 DOI: 10.1002/cncr.33668] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/21/2021] [Accepted: 04/27/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Uptake of cancer risk management based on inherited predispositions, which encompasses bilateral mastectomy (BLM), bilateral salpingo-oophorectomy (BSO), and intensified screening, is the primary motivation for cascade testing for hereditary breast and ovarian cancer (HBOC). However, long-term outcome data for cascade testers are lacking. METHODS Medical records were abstracted for all unaffected women with pathogenic variants in HBOC genes from 2 cancer hospitals (2013-2019) with at least 1 year of follow-up to compare the uptake of surgery and screening between cascade and noncascade testers. RESULTS Cascade testers (79.8%) were younger than noncascade testers (mean age, 37.6 vs 43.5 years; P = .002). Among women aged ≥40 years, 43% underwent BLM, and 71.6% underwent BSO, with no significant difference in uptake between cascade and noncascade testers. The mean time to BSO among cascade testers was shorter among women aged ≥40 years versus those aged <40 years (11.8 vs 31.9 months; P = .04); no such difference was observed among noncascade testers. Mammography and breast magnetic resonance imaging rates were low in the recorded 6 years for both groups after genetic counseling. CONCLUSIONS Management uptake among cascade testers is high with rates comparable to those for unaffected BRCA-positive women. A large proportion of women act on cascade test results, and this represents a novel report of utilization of cancer management strategies.
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Affiliation(s)
- Sukh Makhnoon
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Grace Tran
- Clinical Cancer Genetics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Brooke Levin
- William G. Rohrer Cancer Genetics Program, Division of Hematology and Medical Oncology, MD Anderson Cancer Center at Cooper University Health Care, Camden, New Jersey
| | - Kristin D Mattie
- William G. Rohrer Cancer Genetics Program, Division of Hematology and Medical Oncology, MD Anderson Cancer Center at Cooper University Health Care, Camden, New Jersey
| | | | - Robert J Volk
- Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Generosa Grana
- William G. Rohrer Cancer Genetics Program, Division of Hematology and Medical Oncology, MD Anderson Cancer Center at Cooper University Health Care, Camden, New Jersey
| | - Banu K Arun
- Clinical Cancer Genetics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Susan K Peterson
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, Houston, Texas
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15
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Lost opportunities for mismatch repair (MMR) screening among minority women with endometrial cancer. Sci Rep 2021; 11:11712. [PMID: 34083606 PMCID: PMC8175729 DOI: 10.1038/s41598-021-91053-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 05/20/2021] [Indexed: 12/21/2022] Open
Abstract
Lynch Syndrome (LS) prevalence in underrepresented minorities are lacking. The objective of this study was to assess the prevalence of LS in a minority patient population. Secondary objectives included identifying factors associated with successful LS screening and to characterize clinicopathologic features. Women with endometrial cancer treated within a university system from 2014 and 2016 were included. Immunohistochemistry (IHC) results of MLH1, PMS2, MSH2 and MSH6 were obtained from medical records and clinicopathologic factors abstracted. Patients not previously screened for LS were screened. 276 patients were evaluable. More minority women were screened as part of their routine cancer care (p = 0.005). Additionally, women 50 years or younger were more likely to be screened for LS compared to women older than 51(p = 0.009) and uninsured or reliant on Medicaid patients (p = 0.011) were more likely to be screened during routine care. Six patients received confirmatory germline testing for LS (4.3%), and another 8 patients had a staining pattern suggestive of LS. In an underrepresented population, the rate of LS in endometrial cancer is similar to previous reports. LS may be under diagnosed and opportunities missed when universal screening is not applied in minority women.
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16
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George SHL, Donenberg T, Alexis C, DeGennaro V, Dyer H, Yin S, Ali J, Butler R, Chin SN, Curling D, Lowe D, Lunn J, Turnquest T, Wharfe G, Cerbon D, Barreto-Coelho P, Schlumbrecht MP, Akbari MR, Narod SA, Hurley JE. Gene Sequencing for Pathogenic Variants Among Adults With Breast and Ovarian Cancer in the Caribbean. JAMA Netw Open 2021; 4:e210307. [PMID: 33646313 PMCID: PMC7921902 DOI: 10.1001/jamanetworkopen.2021.0307] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
IMPORTANCE Rates of breast and ovarian cancer are high in the Caribbean; however, to date, few published data quantify the prevalence of inherited cancer in the Caribbean population. OBJECTIVE To determine whether deleterious variants in genes that characterize the hereditary breast and ovarian cancer syndrome are associated with the development of breast and ovarian cancer in the English- and Creole-speaking Caribbean populations. DESIGN, SETTING, AND PARTICIPANTS This multisite genetic association study used data from germline genetic test results between June 2010 and June 2018 in the Bahamas, Cayman Islands, Barbados, Dominica, Jamaica, Haiti, and Trinidad and Tobago. Next-generation sequencing on a panel of 30 genes and multiplex ligation-dependent probe amplification (BRCA1 and BRCA2) were performed. Medical records were reviewed at time of study enrollment. Women and men diagnosed with breast and ovarian cancer with at least 1 grandparent born in the participating study sites were included; 1018 individuals were eligible and consented to participate in this study. Data were analyzed from November 4, 2019, to May 6, 2020. EXPOSURES Breast and/or ovarian cancer diagnosis. MAIN OUTCOMES AND MEASURES Rate of inherited breast and ovarian cancer syndrome and spectrum and types of variants. RESULTS Of 1018 participants, 999 (98.1%) had breast cancer (mean [SD] age, 46.6 [10.8] years) and 21 (2.1%) had ovarian cancer (mean [SD] age, 47.6 [13.5] years). Three individuals declined to have their results reported. A total of 144 of 1015 (14.2%) had a pathogenic or likely pathogenic (P/LP) variant in a hereditary breast and ovarian cancer syndrome gene. A total of 64% of variant carriers had P/LP variant in BRCA1, 23% in BRCA2, 9% in PALB2 and 4% in RAD51C, CHEK2, ATM, STK11 and NBN. The mean (SD) age of variant carriers was 40.7 (9.2) compared with 47.5 (10.7) years in noncarriers. Individuals in the Bahamas had the highest proportion of hereditary breast and ovarian cancer (23%), followed by Barbados (17.9%), Trinidad (12%), Dominica (8.8%), Haiti (6.7%), Cayman Islands (6.3%), and Jamaica (4.9%). In Caribbean-born women and men with breast cancer, having a first- or second-degree family member with breast cancer was associated with having any BRCA1 or BRCA2 germline variant (odds ratio, 1.58; 95% CI, 1.24-2.01; P < .001). A BRCA1 vs BRCA2 variant was more strongly associated with triple negative breast cancer (odds ratio, 6.33; 95% CI, 2.05-19.54; P = .001). CONCLUSIONS AND RELEVANCE In this study, among Caribbean-born individuals with breast and ovarian cancer, 1 in 7 had hereditary breast and ovarian cancer. The proportion of hereditary breast and ovarian cancer varied by island and ranged from 23% in the Bahamas to 4.9% in Jamaica. Each island had a distinctive set of variants.
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Affiliation(s)
- Sophia H. L. George
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami, Miami, Florida
- Sylvester Comprehensive Cancer Center, Miami, Florida
- Leonard Miller School of Medicine, University of Miami, Miami, Florida
| | - Talia Donenberg
- Sylvester Comprehensive Cancer Center, Miami, Florida
- Leonard Miller School of Medicine, University of Miami, Miami, Florida
- Department of Genetics, University of Miami, Miami, Florida
| | - Cheryl Alexis
- Faculty of Medical Sciences, University of West Indies-Cave Hill, Barbados
| | | | - Hedda Dyer
- Ross University School of Medicine, Commonwealth of Dominica (now in Barbados)
| | - Sook Yin
- Cayman Islands Cancer Society, Grand Cayman, Cayman Islands
| | - Jameel Ali
- St. James Medical Complex, Northwest Regional Health Authority, Port-of-Spain, Trinidad and Tobago
| | - Raleigh Butler
- Princess Margaret Hospital, University of the West Indies, School of Clinical Medicine and Research, Nassau, Bahamas
| | - Sheray N. Chin
- Department of Pathology, University of West Indies-Mona, Kingston, Jamaica
| | - DuVaughn Curling
- Princess Margaret Hospital, University of the West Indies, School of Clinical Medicine and Research, Nassau, Bahamas
| | - Dwight Lowe
- Department of Pathology, University of West Indies-Mona, Kingston, Jamaica
| | - John Lunn
- Princess Margaret Hospital, University of the West Indies, School of Clinical Medicine and Research, Nassau, Bahamas
| | - Theodore Turnquest
- Princess Margaret Hospital, University of the West Indies, School of Clinical Medicine and Research, Nassau, Bahamas
| | - Gilian Wharfe
- Department of Pathology, University of West Indies-Mona, Kingston, Jamaica
| | - Danielle Cerbon
- Sylvester Comprehensive Cancer Center, Miami, Florida
- Division of Medical Oncology, Department of Medicine, University of Miami, Miami, Florida
| | - Priscila Barreto-Coelho
- Sylvester Comprehensive Cancer Center, Miami, Florida
- Division of Medical Oncology, Department of Medicine, University of Miami, Miami, Florida
| | - Matthew P. Schlumbrecht
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami, Miami, Florida
- Sylvester Comprehensive Cancer Center, Miami, Florida
- Leonard Miller School of Medicine, University of Miami, Miami, Florida
| | - Mohammad R. Akbari
- Women’s College Research Institute, Women’s College Hospital, University of Toronto, Toronto, Canada
| | - Steven A. Narod
- Women’s College Research Institute, Women’s College Hospital, University of Toronto, Toronto, Canada
| | - Judith E. Hurley
- Sylvester Comprehensive Cancer Center, Miami, Florida
- Leonard Miller School of Medicine, University of Miami, Miami, Florida
- Division of Medical Oncology, Department of Medicine, University of Miami, Miami, Florida
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