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Blondeaux E, Arecco L, Punie K, Graffeo R, Toss A, De Angelis C, Trevisan L, Buzzatti G, Linn SC, Dubsky P, Cruellas M, Partridge AH, Balmaña J, Paluch-Shimon S, Lambertini M. Germline TP53 pathogenic variants and breast cancer: A narrative review. Cancer Treat Rev 2023; 114:102522. [PMID: 36739824 DOI: 10.1016/j.ctrv.2023.102522] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 02/02/2023]
Abstract
Approximately 10% of breast cancers are associated with the inheritance of a pathogenic variant (PV) in one of the breast cancer susceptibility genes. Multiple breast cancer predisposing genes, including TP53, are responsible for the increased breast cancer risk. Tumor protein-53 (TP53) germline PVs are associated with Li-Fraumeni syndrome, a rare autosomal dominant inherited cancer predisposition syndrome associated with early-onset pediatric and multiple primary cancers such as soft tissue and bone sarcomas, breast cancer, brain tumors, adrenocortical carcinomas and leukemias. Women harboring a TP53 PV carry a lifetime risk of developing breast cancer of 80-90%. The aim of the present narrative review is to provide a comprehensive overview of the criteria for offering TP53 testing, prevalence of TP53 carriers among patients with breast cancer, and what is known about its prognostic and therapeutic implications. A summary of the current indications of secondary cancer surveillance and survivorship issues are also provided. Finally, the spectrum of TP53 alteration and testing is discussed. The optimal strategies for the treatment of breast cancer in patients harboring TP53 PVs poses certain challenges. Current guidelines favor the option of performing mastectomy rather than lumpectomy to avoid adjuvant radiotherapy and subsequent risk of radiation-induced second primary malignancies, with careful consideration of radiation when indicated post-mastectomy. Some studies suggest that patients with breast cancer and germline TP53 PV might have worse survival outcomes compared to patients with breast cancer and wild type germline TP53 status. Annual breast magnetic resonance imaging (MRI) and whole-body MRI are recommended as secondary prevention.
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Affiliation(s)
- Eva Blondeaux
- Clinical Epidemiology Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
| | - Luca Arecco
- Department of Internal Medicine and Medical Specialties (DiMI), School of Medicine, University of Genova, Genoa, Italy; Department of Medical Oncology, U.O. Clinica di Oncologia Medica, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Kevin Punie
- Department of General Medical Oncology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Rossella Graffeo
- Oncology Institute of Southern Switzerland, EOC, Bellinzona, Switzerland
| | - Angela Toss
- Department of Oncology and Hematology, University Hospital of Modena, Modena, Italy
| | - Carmine De Angelis
- Department of Clinical Medicine and Surgery, University Federico II, Naples, Italy
| | - Lucia Trevisan
- Hereditary Cancer Unit, Oncologia Medica 2, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Giulia Buzzatti
- Hereditary Cancer Unit, Oncologia Medica 2, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Sabine C Linn
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Peter Dubsky
- Breast Centre, Hirslanden Klinik St Anna, Luzern, Switzerland
| | - Mara Cruellas
- Department of Medical Oncology, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - Ann H Partridge
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Judith Balmaña
- Department of Medical Oncology, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - Shani Paluch-Shimon
- Breast Cancer Unit, Sharett Institute of Oncology, Hadassah Medical Center & Faculty of Medicine, Hebrew University, 91120 Jerusalem, Israel
| | - Matteo Lambertini
- Department of Internal Medicine and Medical Specialties (DiMI), School of Medicine, University of Genova, Genoa, Italy; Department of Medical Oncology, U.O. Clinica di Oncologia Medica, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
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Health professionals’ practice for young people with, or at risk of, Li–Fraumeni syndrome: An Australasian survey. J Genet Couns 2019; 29:737-747. [DOI: 10.1002/jgc4.1199] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 11/18/2019] [Accepted: 11/18/2019] [Indexed: 12/20/2022]
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3
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Warby M, Wakefield CE, Vetsch J, Tucker KM. Families' and health care professionals' attitudes towards Li-Fraumeni syndrome testing in children: A systematic review. Clin Genet 2019; 95:140-150. [PMID: 30191952 DOI: 10.1111/cge.13442] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 09/02/2018] [Accepted: 09/04/2018] [Indexed: 01/18/2023]
Abstract
Li-Fraumeni syndrome (LFS) is a highly penetrant cancer predisposition syndrome caused by germline TP53 mutations. Genetic testing is not routinely offered in asymptomatic children at risk of the condition as the benefits are debatable and the attitudes of families and health care professionals (HCPs) may vary. This review assessed the attitudes of families and HCPs towards offering genetic testing to children for LFS, with a focus on perceived advantages and disadvantages and involvement of children in the decision-making process. We searched three key databases (Medline, PsycINFO and EMBASE) to identify quantitative and qualitative studies. We screened 729 articles identifying eight studies for detailed review. Most parents perceived TP53 genetic testing to be beneficial in childhood, despite previous lack of surveillance guidelines. Parents raised some concerns, including decreased insurability and diminishing the child's autonomy. Most children tested reported no negative emotional concerns after testing, even if tested positive. Despite generally positive interest clinicians remain hesitant. Most families saw the value in involving children in decision-making. Families' acceptance of TP53 testing in childhood was high. This review highlights the need for research on the long-term psychosocial impacts of testing and the attitudes of families to be reflected in professional guidelines.
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Affiliation(s)
- Meera Warby
- Hereditary Cancer Centre, Department of Oncology and Haematology, Prince of Wales Hospital, Randwick, New South Wales, Australia
| | - Claire E Wakefield
- School of Women's and Children's Health, University of New South Wales, Kensington, New South Wales, Australia
- Behavioral Sciences Unit Proudly Supported by the Kids with Cancer Foundation, Kids Cancer Centre, Sydney Children's Hospital, Randwick, New South Wales, Australia
| | - Janine Vetsch
- School of Women's and Children's Health, University of New South Wales, Kensington, New South Wales, Australia
- Behavioral Sciences Unit Proudly Supported by the Kids with Cancer Foundation, Kids Cancer Centre, Sydney Children's Hospital, Randwick, New South Wales, Australia
| | - Katherine M Tucker
- Hereditary Cancer Centre, Department of Oncology and Haematology, Prince of Wales Hospital, Randwick, New South Wales, Australia
- Prince of Wales Clinical School, University of New South Wales, Sydney, New South Wales, Australia
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4
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Valdez JM, Walker B, Ogg S, Gattuso J, Alderfer MA, Zelley K, Ford CA, Baker JN, Mandrell BN, Nichols KE. Parent-child communication surrounding genetic testing for Li-Fraumeni syndrome: Living under the cloud of cancer. Pediatr Blood Cancer 2018; 65:e27350. [PMID: 30009566 DOI: 10.1002/pbc.27350] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/23/2018] [Accepted: 06/10/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND Advances in the application of genetic technologies reveal a growing number of heritable disorders associated with an increased risk to develop cancer during childhood. As genetic testing is increasingly employed in the clinical setting, it is essential to understand whether parents communicate with their children about test results and to elucidate the factors that influence the content and outcomes of these conversations. METHODS Semistructured interviews were conducted with 14 parents whose children tested positive for Li-Fraumeni syndrome (LFS). Semantic content analysis was performed on transcribed interviews, focusing on questions related to parent-child conversations about the genetic testing process and disclosure of positive test results. RESULTS All parents emphasized the importance of involving children in conversations about LFS. The majority (93%) identified as being part of "cancer families" in which prior experiences with cancer created opportunities for communication. While all had spoken with their children about cancer, only seven (50%) specifically disclosed to their children that they had tested positive for LFS. The most common reason cited for nondisclosure at the time of this study was the young age of the children. CONCLUSION Parents of children with LFS desire open conversations about genetic testing and cancer risk. These conversations are challenging yet essential to enable child understanding of genetic risk status and enhance compliance with health-promoting and cancer surveillance measures. Development of age-appropriate educational materials and novel clinical models to facilitate parent-child conversations about genetic test results and risk status for cancer are needed.
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Affiliation(s)
- Jessica M Valdez
- Division of Cancer Predisposition, St. Jude Children's Research Hospital, Memphis, Tennessee.,Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Breya Walker
- Division of Nursing Research, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Susan Ogg
- Division of Nursing Research, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Jami Gattuso
- Division of Nursing Research, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Melissa A Alderfer
- Center for Healthcare Delivery Science, Nemours Children's Health System, Wilmington, Delaware
| | - Kristin Zelley
- Division of Oncology, The Children's Hospital of Philadelphia, Philadelphia, Philadelphia
| | - Carol A Ford
- Division of Adolescent Medicine, The Children's Hospital of Philadelphia, Philadelphia, Philadelphia
| | - Justin N Baker
- Division of Quality of Life and Palliative Care, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Belinda N Mandrell
- Division of Nursing Research, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Kim E Nichols
- Division of Cancer Predisposition, St. Jude Children's Research Hospital, Memphis, Tennessee.,Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
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McBride KA, Ballinger ML, Schlub TE, Young MA, Tattersall MHN, Kirk J, Eeles R, Killick E, Walker LG, Shanley S, Thomas DM, Mitchell G. Psychosocial morbidity in TP53 mutation carriers: is whole-body cancer screening beneficial? Fam Cancer 2018; 16:423-432. [PMID: 28124295 DOI: 10.1007/s10689-016-9964-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Germline TP53 mutation carriers are at high risk of developing a range of cancers. Effective cancer risk management is an important issue for these individuals. We assessed the psychosocial impact in TP53 mutation carriers of WB-MRI screening as part of the Surveillance in Multi-Organ Cancer (SMOC+) protocol, measuring their unmet needs, anxiety and depression levels as well as cancer worry using psychological questionnaires and in-depth interviews about their experiences of screening. We present preliminary psychosocial findings from 17 participants during their first 12 months on the trial. We found a significant reduction in participants' mean anxiety from baseline to two weeks post WB-MRI (1.2, 95% CI 0.17 to 2.23 p = 0.025), indicative of some benefit. Emerging qualitative themes show most participants are emotionally supported and contained by the screening program and are motivated by their immediate concern about staying alive, despite being informed about the current lack of evidence around efficacy of screening for people with TP53 mutations in terms of cancer morbidity or mortality. For those that do gain emotional reassurance from participating in the screening study, feelings of abandonment by the research team are a risk when the study ends. For others, screening was seen as a burden, consistent with the relentless nature of cancer risk associated with Li-Fraumeni syndrome, though these patients still declared they wished to participate due to their concern with staying alive. Families with TP53 mutations need ongoing support due to the impact on the whole family system. These findings suggest a comprehensive multi-organ screening program for people with TP53 mutations provides psychological benefit independent of an impact on cancer morbidity and mortality associated with the syndrome. The benefits of a multi-organ screening program will be greater still if the screening tests additionally reduce the cancer morbidity and mortality associated with the syndrome. These findings may also inform the care of individuals and families with other multi-organ cancer predisposition syndromes.
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Affiliation(s)
- Kate A McBride
- School of Science and Health and Centre for Health Research, Western Sydney University, Building 3, Centre for Health Research, Campbelltown, NSW, 2560, Australia. .,Sydney School of Public Health, Camperdown, NSW, 2006, Australia.
| | - Mandy L Ballinger
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Darlinghurst, NSW, 2010, Australia
| | - Timothy E Schlub
- Sydney School of Public Health, Camperdown, NSW, 2006, Australia
| | - Mary-Anne Young
- Familial Cancer Clinic, Peter MacCallum Cancer Centre, E. Melbourne, VIC, 3002, Australia
| | - Martin H N Tattersall
- Department of Cancer Medicine, The Chris O'Brien Lifehouse, Sydney Medical School, Camperdown, NSW, 2006, Australia
| | - Judy Kirk
- The Familial Cancer Service, Crown Princess Mary Cancer Centre, Westmead, NSW, 2145, Australia
| | - Ros Eeles
- Oncogenetics, The Institute of Cancer Research, London, UK
| | - Emma Killick
- Medical Oncology Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | | | - Sue Shanley
- Familial Cancer Clinic, Peter MacCallum Cancer Centre, E. Melbourne, VIC, 3002, Australia
| | - David M Thomas
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Darlinghurst, NSW, 2010, Australia
| | - Gillian Mitchell
- Familial Cancer Clinic, Peter MacCallum Cancer Centre, E. Melbourne, VIC, 3002, Australia.,Sir Peter MacCallum Dept. of Oncology, University of Melbourne, Parkville, VIC, Australia
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Angelousi A, Zilbermint M, Berthon A, Espiard S, Stratakis CA. Diagnosis and Management of Hereditary Adrenal Cancer. Recent Results Cancer Res 2016; 205:125-47. [PMID: 27075352 DOI: 10.1007/978-3-319-29998-3_8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Benign adrenocortical tumours (ACT) are relatively frequent lesions; on the contrary, adrenocortical carcinoma (ACC) is a rare and aggressive malignancy with unfavourable prognosis. Recent advances in the molecular understanding of adrenal cancer offer promise for better therapies in the future. Many of these advances stem from the molecular elucidation of genetic conditions predisposing to the development of ACC. Six main clinical syndromes have been described to be associated with hereditary adrenal cancer. In these conditions, genetic counselling plays an important role for the early detection and follow-up of the patients and the affected family members.
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Affiliation(s)
- Anna Angelousi
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA.
| | - Mihail Zilbermint
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Annabel Berthon
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Stéphanie Espiard
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Constantine A Stratakis
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA.
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Peters JA, Kenen R, Bremer R, Givens S, Savage SA, Mai PL. Easing the Burden: Describing the Role of Social, Emotional and Spiritual Support in Research Families with Li-Fraumeni Syndrome. J Genet Couns 2015; 25:529-42. [PMID: 26621765 DOI: 10.1007/s10897-015-9905-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 10/19/2015] [Indexed: 01/10/2023]
Abstract
This study presents findings of a mixed-method descriptive exploration of the role of friends and spirituality/religiosity in easing the burden of families with the rare inherited disorder, Li-Fraumeni Syndrome (LFS). LFS is caused by germline mutations in the TP53 gene and is associated with very high lifetime risk of developing one or more malignancies. During the first clinical visit we assessed several types of social support among a subset of study participants (N = 66) using an established interactive research tool called the Colored Eco-Genetic Relationship Map (CEGRM). We performed both quantitative and qualitative analyses of social relationships with LFS family members and close non-kin. Distress scores (N = 59) were mostly low normal, with some outliers. We found that reported friendships varied widely, that the friendships were often deep and enduring, and were important sources of informational, tangible, emotional and spiritual support. Confidantes tended to be best friends and/or spouses. Organized religion was important in selected families, typically from mainstream traditions. However, a number of people identified themselves as "spiritual" and reported spiritual and humanist explorations. Our results shed preliminary light on how some people in families with LFS cope in the face of tremendous medical, social and emotional challenges.
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Affiliation(s)
- June A Peters
- Clinical Genetics Branch (CGB), Division of Cancer Epidemiology and Genetics (DCEG), National Cancer Institute (NCI), NIH, DHHS, Rockville, MD, USA.
| | - Regina Kenen
- Department of Sociology and Anthropology, The College of New Jersey, Ewing, NJ, USA
| | - Renee Bremer
- Clinical Genetics Branch (CGB), Division of Cancer Epidemiology and Genetics (DCEG), National Cancer Institute (NCI), NIH, DHHS, Rockville, MD, USA
| | - Shannon Givens
- Clinical Genetics Branch (CGB), Division of Cancer Epidemiology and Genetics (DCEG), National Cancer Institute (NCI), NIH, DHHS, Rockville, MD, USA
| | - Sharon A Savage
- Clinical Genetics Branch (CGB), Division of Cancer Epidemiology and Genetics (DCEG), National Cancer Institute (NCI), NIH, DHHS, Rockville, MD, USA
| | - Phuong L Mai
- Clinical Genetics Branch (CGB), Division of Cancer Epidemiology and Genetics (DCEG), National Cancer Institute (NCI), NIH, DHHS, Rockville, MD, USA
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Further evidence for pathogenicity of the TP53 tetramerization domain mutation p.Arg342Pro in Li–Fraumeni syndrome. Fam Cancer 2014; 14:161-5. [DOI: 10.1007/s10689-014-9754-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Alderfer MA, Zelley K, Lindell RB, Novokmet A, Mai PL, Garber JE, Nathan D, Scollon S, Chun NM, Patenaude AF, Ford JM, Plon SE, Schiffman JD, Diller LR, Savage SA, Malkin D, Ford CA, Nichols KE. Parent decision-making around the genetic testing of children for germline TP53 mutations. Cancer 2014; 121:286-93. [PMID: 25223899 DOI: 10.1002/cncr.29027] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 07/07/2014] [Accepted: 07/22/2014] [Indexed: 11/10/2022]
Abstract
BACKGROUND Li-Fraumeni syndrome is a rare genetic cancer predisposition syndrome caused by germline TP53 mutations. Up to 20% of mutation carriers develop cancer during childhood. The benefits of TP53 mutation testing of children are a matter of debate and knowledge of parent decision-making around such testing is limited. The current study examined how parents make decisions regarding TP53 testing for their children. METHODS Families offered and those pursuing TP53 testing for their children were identified across the study sites. Qualitative interviews with 46 parents (39 families) were analyzed to describe decision-making styles and perceived advantages and disadvantages of testing. RESULTS TP53 mutation testing uptake was high (92%). Three decision-making styles emerged. Automatic decisions (44% of decisions) involved little thought and identified immediate benefit(s) in testing (100% pursued testing). Considered decisions (49%) weighed the risks and benefits but were made easily (77% pursued testing). Deliberated decisions (6%) were difficult and focused on psychosocial concerns (25% pursued testing). Perceived advantages of testing included promoting child health, satisfying a "need to know," understanding why cancer(s) occurred, suggesting family member risk, and benefiting research. Disadvantages included psychosocial risks and privacy/discrimination/insurance issues. CONCLUSIONS Although empirical evidence regarding the benefits and risks of TP53 testing during childhood are lacking, the majority of parents in the current study decided easily in favor of testing and perceived a range of advantages. The authors conclude that in the context of a clinical diagnosis of Li-Fraumeni syndrome, parents should continue to be offered TP53 testing for their children, counseled regarding potential risks and benefits, and supported in their decision-making process.
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Affiliation(s)
- Melissa A Alderfer
- Division of Oncology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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Double heterozygosity for germline mutations in BRCA1 and p53 in a woman with early onset breast cancer. Breast Cancer Res Treat 2014; 146:447-50. [PMID: 24916180 DOI: 10.1007/s10549-014-3011-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 05/26/2014] [Indexed: 10/25/2022]
Abstract
To report on a highly unusual case of a 20-year-old woman who presented with multifocal metaplastic breast cancer and was subsequently found to carry deleterious germline mutations in both BRCA1 and p53. Genetic testing was requested on an expedited basis to assist in surgical decision-making and BRCA1/2 and p53 genetic analysis was ordered concurrently. BRCA1/2 and p53 analyses were completed using a combination of direct DNA sequencing and multiplex ligation probe amplification (MLPA). The patient was found to carry a deletion of exon 3 of the BRCA1 gene and a splice site mutation at the exon4/intron4 boundary of the p53 gene. To our knowledge, this is the first report of double heterozygosity in BRCA1 and p53. The patient's clinical presentation is highly reminiscent of that predicted by preclinical mouse models. In patients with early onset breast cancer, the possibility of germline mutations in more than one cancer susceptibility gene should be considered. This could have important clinical implications for patients and their at-risk family members.
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11
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Bruwer Z, Algar U, Vorster A, Fieggen K, Davidson A, Goldberg P, Wainwright H, Ramesar R. Predictive genetic testing in children: constitutional mismatch repair deficiency cancer predisposing syndrome. J Genet Couns 2013; 23:147-55. [PMID: 24122200 DOI: 10.1007/s10897-013-9659-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Accepted: 09/11/2013] [Indexed: 01/26/2023]
Abstract
Biallelic germline mutations in mismatch repair genes predispose to constitutional mismatch repair deficiency syndrome (CMMR-D). The condition is characterized by a broad spectrum of early-onset tumors, including hematological, brain and bowel and is frequently associated with features of Neurofibromatosis type 1. Few definitive screening recommendations have been suggested and no published reports have described predictive testing. We report on the first case of predictive testing for CMMR-D following the identification of two non-consanguineous parents, with the same heterozygous mutation in MLH1: c.1528C > T. The genetic counseling offered to the family, for their two at-risk daughters, is discussed with a focus on the ethical considerations of testing children for known cancer-causing variants. The challenges that are encountered when reporting on heterozygosity in a child younger than 18 years (disclosure of carrier status and risk for Lynch syndrome), when discovered during testing for homozygosity, are addressed. In addition, the identification of CMMR-D in a three year old, and the recommended clinical surveillance that was proposed for this individual is discussed. Despite predictive testing and presymptomatic screening, the sudden death of the child with CMMR-D syndrome occurred 6 months after her last surveillance MRI. This report further highlights the difficulty of developing guidelines, as a result of the rarity of cases and diversity of presentation.
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12
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Tumor protein p53 (TP53) testing and Li-Fraumeni syndrome : current status of clinical applications and future directions. Mol Diagn Ther 2013; 17:31-47. [PMID: 23355100 DOI: 10.1007/s40291-013-0020-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Prevalent as an acquired abnormality in cancer, the role of tumor protein p53 (TP53) as a germline mutation continues to evolve. The clinical impact of a germline TP53 mutation is often dramatic and affects the full life course, with a propensity to develop rare tumors in childhood and multiple common cancers of unexpectedly early onset in adulthood. In this article, we review the clinical relevance of germline mutations in the TP53 tumor suppressor gene to current healthcare practice, including the optimal ways to identify patients with Li-Fraumeni syndrome (LFS), to recognize the core cancers associated with LFS, and to develop strategies for early detection of LFS-associated tumors. Several TP53-targeted approaches to improve outcomes in LFS patients are also reviewed. A case report is used to highlight special TP53 testing dilemmas and unique challenges associated with genetic testing decisions in the current age of rapidly advancing genomic technologies.
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13
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Mitchell G, Ballinger ML, Wong S, Hewitt C, James P, Young MA, Cipponi A, Pang T, Goode DL, Dobrovic A, Thomas DM. High frequency of germline TP53 mutations in a prospective adult-onset sarcoma cohort. PLoS One 2013; 8:e69026. [PMID: 23894400 PMCID: PMC3718831 DOI: 10.1371/journal.pone.0069026] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 06/05/2013] [Indexed: 11/25/2022] Open
Abstract
Sarcomas are a key feature of Li-Fraumeni and related syndromes (LFS/LFL), associated with germline TP53 mutations. Current penetrance estimates for TP53 mutations are subject to significant ascertainment bias. The International Sarcoma Kindred Study is a clinic-based, prospective cohort of adult-onset sarcoma cases, without regard to family history. The entire cohort was screened for mutations in TP53 using high-resolution melting analysis and Sanger sequencing, and multiplex-ligation-dependent probe amplification and targeted massively parallel sequencing for copy number changes. Pathogenic TP53 mutations were detected in blood DNA of 20/559 sarcoma probands (3.6%); 17 were germline and 3 appeared to be somatically acquired. Of the germline carriers, one appeared to be mosaic, detectable in the tumor and blood, but not epithelial tissues. Germline mutation carriers were more likely to have multiple cancers (47% vs 15% for non-carriers, P = 3.0×10−3), and earlier cancer onset (33 vs 48 years, P = 1.19×10−3). The median survival of mutation carriers following first cancer diagnosis was not significantly different from non-carriers. Only 10/17 (59%) pedigrees met classical or Chompret criteria for LFS. In summary, germline TP53 mutations are not rare in adult patients with sarcoma, with implications for screening, surveillance, treatment and genetic counselling of carriers and family members.
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Affiliation(s)
- Gillian Mitchell
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Mandy L. Ballinger
- Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Stephen Wong
- Department of Pathology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Chelsee Hewitt
- Department of Pathology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Paul James
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Mary-Anne Young
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Arcadi Cipponi
- Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Tiffany Pang
- Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - David L. Goode
- Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Alex Dobrovic
- Department of Pathology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
- Department of Pathology, University of Melbourne, Melbourne, Victoria, Australia
| | - David M. Thomas
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
- * E-mail:
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14
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Fresneau B, Brugières L, Caron O, Moutel G. Ethical Issues in Presymptomatic Genetic Testing for Minors: A dilemma in Li-Fraumeni Syndrome. J Genet Couns 2012; 22:315-22. [DOI: 10.1007/s10897-012-9556-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Accepted: 11/21/2012] [Indexed: 11/28/2022]
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15
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Abstract
Li-Fraumeni syndrome (LFS) is a classic cancer predisposition disorder that is commonly associated with germline mutations of the p53 tumor suppressor gene. Examination of the wide spectrum of adult-onset and childhood cancers and the distribution of p53 mutations has led to a greater understanding of cancer genotype-phenotype correlations. However, the complex LFS phenotype is not readily explained by the simple identification of germline p53 mutations in affected individuals. Recent work has identified genetic events that modify the LFS phenotype. These include intragenic polymorphisms, mutations/polymorphisms of genes in the p53 regulatory pathway, as well as more global events such as aberrant copy number variation and telomere attrition. These genetic events may, in part, explain the breadth of tumor histiotypes within and across LFS families, the apparent accelerated age of onset within families, and the range of clinical outcomes among affected family members. This review will examine the clinical and genetic definitions of LFS and offer insight into how lessons learned from the study of this rare disorder may inform similar questions in other familial cancer syndromes.
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Affiliation(s)
- David Malkin
- Division of Hematology/Oncology, Department of Pediatrics, The Hospital for Sick Children, Toronto, ON, Canada
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16
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Villani A, Tabori U, Schiffman J, Shlien A, Beyene J, Druker H, Novokmet A, Finlay J, Malkin D. Biochemical and imaging surveillance in germline TP53 mutation carriers with Li-Fraumeni syndrome: a prospective observational study. Lancet Oncol 2011; 12:559-67. [PMID: 21601526 DOI: 10.1016/s1470-2045(11)70119-x] [Citation(s) in RCA: 240] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Individuals with Li-Fraumeni syndrome have a high lifetime risk of developing cancer. We assessed the feasibility and potential clinical effect of a comprehensive surveillance protocol in asymptomatic TP53 mutation carriers in families with this syndrome. METHODS We implemented a clinical surveillance protocol, using frequent biochemical and imaging studies, for asymptomatic TP53 mutation carriers on Jan 1, 2004, and did a prospective observational study of members of eight families with Li-Fraumeni syndrome who either chose to undergo surveillance or chose not to undergo surveillance. The primary outcome measure was detection of new cancers. The secondary outcome measure was overall survival. FINDINGS As of Nov 1, 2010, 33 TP53 mutation carriers were identified, 18 of whom underwent surveillance. The surveillance protocol detected ten asymptomatic tumours in seven patients, including small, high-grade tumours and low-grade or premalignant tumours. All seven mutation carriers were alive after a median follow-up of 24 months (IQR 22-65 months). 12 high-grade, high-stage tumours developed in 10 individuals in the non-surveillance group, two of whom (20%) were alive at the end of follow-up (p=0·0417 for comparison with survival in the surveillance group). 3-year overall survival was 100% in the surveillance group and 21% (95% CI 4-48%) in the non-surveillance group (p=0·0155). INTERPRETATION Our findings show the feasibility of a clinical surveillance protocol for the detection of asymptomatic neoplasms in individuals with germline TP53 mutations. This strategy offers a management option for affected individuals, and its benefits lend support to the use of early genetic testing of at-risk individuals and families. FUNDING Canadian Cancer Society Research Institute, Canadian Institutes of Health Research, SickKids Foundation, and Soccer for Hope.
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Affiliation(s)
- Anita Villani
- Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
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17
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Teplick A, Kowalski M, Biegel JA, Nichols KE. Educational paper: screening in cancer predisposition syndromes: guidelines for the general pediatrician. Eur J Pediatr 2011; 170:285-94. [PMID: 21210147 PMCID: PMC3086787 DOI: 10.1007/s00431-010-1377-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Accepted: 12/07/2010] [Indexed: 12/22/2022]
Abstract
Improvements in our understanding of the genetic basis of human disease and increased utilization of genetic testing have identified a variety of heritable disorders associated with the onset of benign or malignant neoplasms during childhood. In many cases, the optimal management of affected children is dependent upon the early detection and treatment of tumors. Surveillance strategies based on the natural history of these lesions are often complex, requiring clinical examinations and radiologic and laboratory studies that evolve over a patient's lifetime. A general pediatrician may be the first to suspect one of these disorders in a patient, or may be faced with questions regarding genetic testing, cancer risk, and cancer screening. The pediatrician may also coordinate and interpret the results of specific surveillance studies. In this review, we present the genetic etiology, presentation, natural history, and surveillance recommendations for four disparate hereditary tumor predisposing syndromes, including Beckwith-Wiedemann syndrome/idiopathic hemihyperplasia, von Hippel-Lindau disease, Li-Fraumeni syndrome, and rhabdoid tumor/schwannomatosis. These examples are meant to offer the clinician practical recommendations as well as a framework upon which to base the understanding and management of other conditions associated with an increased risk to develop tumors in childhood.
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Affiliation(s)
- Alexis Teplick
- Division of Oncology, Children’s Hospital of Philadelphia, Colket Translational Research Building, Rm 3012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Megan Kowalski
- Division of Oncology, Children’s Hospital of Philadelphia, Colket Translational Research Building, Rm 3012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Jaclyn A. Biegel
- Departments of Pediatrics, Children’s Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA, Departments of Pathology, Children’s Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA
| | - Kim E. Nichols
- Division of Oncology, Children’s Hospital of Philadelphia, Colket Translational Research Building, Rm 3012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA
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18
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Karakas Z, Tugcu D, Unuvar A, Atay D, Akcay A, Gedik H, Kayserili H, Dogan O, Anak S, Devecioglu O. Li-Fraumeni syndrome in a Turkish family. Pediatr Hematol Oncol 2010; 27:297-305. [PMID: 20426520 DOI: 10.3109/08880011003663374] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Li-Fraumeni syndrome (LFS) is one of the familial cancers characterized by different tumors and hereditary TP53 mutations. The adrenocortical carcinoma (ACC) association with acute leukemia is unusual in childhood, even in LFS. The authors here present a family with pR337P mutation in TP53 gene who had a child with acute lymphoblastic leukemia (ALL) and associated adrenocortical carcinoma as a case 1 and his cousin with brain tumor as a case 2. A hereditary TP53 mutation supported the diagnosis of LFS in this family. The patients had many difficulties in treatment strategies and succumbed to death. The availability of a reliable molecular marker to detect the R337P TP53 mutation allows the rapid identification of carriers in families that have a child with ACC. Once identified, carriers could be screened for early detection of ACC by imaging and endocrine studies and should be given psychological support to prevent anxiety for death. Whether early detection of ACC will reduce the mortality in these patients remains to be determined.
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Affiliation(s)
- Zeynep Karakas
- Department of Pediatrics, Division of Haematology/Oncology, Istanbul University, Istanbul Medical Faculty, Istanbul, Turkey.
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