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Koon Sun Pat M, Manraj M, Manraj S. Breast cancer survival analysis in the Republic of Mauritius by age, stage at diagnosis and molecular subtype: A retrospective cohort study. Int J Cancer 2024. [PMID: 39243396 DOI: 10.1002/ijc.35172] [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: 11/29/2023] [Revised: 07/05/2024] [Accepted: 07/11/2024] [Indexed: 09/09/2024]
Abstract
Breast cancer is by far the leading cancer both in terms of incidence and mortality in the Republic of Mauritius, a Small Island Developing State (SIDS). However, few studies assessed its survival by age, stage at diagnosis and molecular subtype. We identified 1399 breast cancer cases newly diagnosed between 2017 and 2020 at the Central Health Laboratory, Victoria Hospital. Cancers were categorized into five molecular subtypes: (1) luminal A, (2) luminal B Her2 negative, (3) luminal B Her2 positive, (4) Her2 enriched and (5) Triple negative. The net 1 and 3-year survival were estimated for different age groups, staging at time of diagnosis and molecular subtype. We also estimated the excess hazards using a multivariate Cox proportional hazards model. While early stage at diagnosis (stage 1 [44.4%] and stage 2 [20.1%]) were most common compared to late presentation (Stage 3 [25.4%] and stage 4 [10.1%]), luminal B Her2 negative (36.7%) was the most frequent molecular subtype. The net 1- and 3-year breast cancer survival rates were 93.9% (92.3-95.4) and 83.4% (80.4-86.4), respectively. Breast cancer three-year survival rates were poorest among the youngest patients (<50 years), 77.1% (70.7-83.5), those diagnosed with stage 4 (28.5% [17.1-39.9]) and cancer with a triple negative molecular subtype (71.3% [63.3-79.3]). Emphasis on a national breast cancer screening programme, down staging breast cancer at diagnosis and systematic molecular subtyping of all breast tissues could be pivotal in improving breast cancer survival outcomes in the Republic of Mauritius.
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Affiliation(s)
- Marvin Koon Sun Pat
- Community Physician, Ministry of Health and Wellness, Port Louis, Mauritius
- Faculty of Medicine and Health Science, University of Mauritius, Reduit, Mauritius
| | - Meera Manraj
- Faculty of Medicine and Health Science, University of Mauritius, Reduit, Mauritius
| | - Shyam Manraj
- Central Health Laboratory, Victoria Hospital, Candos, Mauritius
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2
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Suba Z. Estrogen Regulated Genes Compel Apoptosis in Breast Cancer Cells, Whilst Stimulate Antitumor Activity in Peritumoral Immune Cells in a Janus-Faced Manner. Curr Oncol 2024; 31:4885-4907. [PMID: 39329990 PMCID: PMC11431267 DOI: 10.3390/curroncol31090362] [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: 07/13/2024] [Revised: 08/15/2024] [Accepted: 08/22/2024] [Indexed: 09/28/2024] Open
Abstract
Background: Breast cancer incidence and mortality exhibit a rising trend globally among both premenopausal and postmenopausal women, suggesting that there are serious errors in our preventive and therapeutic measures. Purpose: Providing a series of valuable, but misunderstood inventions highlighting the role of increasing estrogen signaling in prevention and therapy of breast cancer instead of its inhibition. Results: 1. Breast cells and breast cancer cells with germline BRCA1/2 mutations similarly show defects in liganded estrogen receptor (ER) signaling, demonstrating its role in genomic instability and cancer initiation. 2. In breast tumors, the increased expression of special receptor family maybe an effort for self-directed improvement of genomic defects, while the weakness or loss of receptors indicates a defect requiring medical repair. 3. ER overexpression in breast cancer cells is capable of strengthening estrogen signaling and DNA repair, while in ER negative tumors, HER2 overexpression tries to upregulate unliganded ER activation and genome stabilization. 4. ER-positive breast cancers responsive to endocrine therapy may show a compensatory ER overexpression resulting in a transient tumor response. Breast cancers non-responsive to antiestrogen treatment exhibit HER2-overexpression for compensating the complete inhibition of hormonal ER activation. 5. In breast tumors, somatic mutations serve upregulation of ER activation via liganded or unliganded pathway helping genome stabilization and apoptotic death. 6. The mutual communication between breast cancer and its inflammatory environment is a wonderful partnership among cells fighting for genome stabilization and apoptotic death of tumor. 7. In breast cancers, there is no resistance to genotoxic or immune blocker therapies, but rather, the nonresponsive tumor cells exhaust all compensatory possibilities against therapeutic damages. Conclusions: Understanding the behavior and ambition of breast cancer cells may achieve a turn in therapy via applying supportive care instead of genotoxic measures.
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Affiliation(s)
- Zsuzsanna Suba
- Department of Molecular Pathology, National Institute of Oncology, Ráth György Str. 7-9, H-1122 Budapest, Hungary
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3
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Mustafa M, Sarfraz S, Saleem G, Khan TA, Shahid D, Taj S, Amir N. Beyond Milk and Nurture: Breastfeeding's Powerful Impact on Breast Cancer. Geburtshilfe Frauenheilkd 2024; 84:541-554. [PMID: 38884025 PMCID: PMC11175834 DOI: 10.1055/a-2313-0637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 04/21/2024] [Indexed: 06/18/2024] Open
Abstract
Breast cancer (BC) stands as a global concern, given its high incidence and impact on women's mortality. This complex disease has roots in various risk factors, some modifiable and others not. Understanding and identifying these factors can be instrumental in both preventing BC and improving survival rates. Remarkably, women's reproductive behaviors have emerged as critical determinants of BC susceptibility. Numerous studies have shed light on how aspects including age of menarche, first pregnancy and menopause along with number of pregnancies, hormone replacement therapies, can influence one's risk of developing BC. Furthermore, the act of breastfeeding and its duration have shown an inverse relationship with BC risk. This review delves into the biological and molecular mechanisms associated with breastfeeding that contribute to BC protection. It highlights the role of endocrine processes triggered by suckling stimulation, the gradual onset of lactational amenorrhea, delayed weaning, reduced lifetime menstrual cycles, chromosomal repair mechanisms, and immunological events throughout the lactation cycle. These insights provide a potential explanation for the protective effects conferred by breastfeeding against breast carcinomas.
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Affiliation(s)
- Muhammad Mustafa
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Sadaf Sarfraz
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Gullelalah Saleem
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Touqeer Ahmad Khan
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Damiya Shahid
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Saba Taj
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Noor Amir
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, Pakistan
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Pederson HJ, Al-Hilli Z, Kurian AW. Racial disparities in breast cancer risk factors and risk management. Maturitas 2024; 184:107949. [PMID: 38652937 DOI: 10.1016/j.maturitas.2024.107949] [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: 12/12/2023] [Revised: 02/03/2024] [Accepted: 02/19/2024] [Indexed: 04/25/2024]
Abstract
Racial disparities in breast cancer outcomes are well described across the spectrum of screening, diagnosis, treatment, and survivorship. Breast cancer mortality is markedly elevated for Non-Hispanic Black women compared with other racial and ethnic groups, with multifactorial causes. Here, we aim to reduce this burden by identifying disparities in breast cancer risk factors, risk assessment, and risk management before breast cancer is diagnosed. We describe a reproductive profile and modifiable risk factors specific to the development of triple-negative breast cancer. We also propose that screening strategies should be both risk- and race-based, given the prevalence of early-onset triple-negative breast cancer in young Black women. We emphasize the importance of early risk assessment and identification of patients at hereditary and familial risk and discuss indications for a high-risk referral. We discuss the subtleties following genetic testing and highlight "uncertain" genetic testing results and risk estimation challenges in women who test negative. We trace aspects of the obesity epidemic in the Black community to infant feeding patterns and emphasize healthy eating and activity. Finally, we discuss building an environment of trust to foster adherence to recommendations, follow-up care, and participation in clinical trials. Addressing relevant social determinants of health; educating patients and clinicians on factors impacting disparities in outcomes; and encouraging participation in targeted, culturally sensitive research are essential to best serve all communities.
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Affiliation(s)
- Holly J Pederson
- Breast Center, Integrated Surgical Institute, Cleveland Clinic, 9500 Euclid Avenue, A80, OH 44195, United States of America.
| | - Zahraa Al-Hilli
- Breast Center, Integrated Surgical Institute, Cleveland Clinic, 9500 Euclid Avenue, A80, OH 44195, United States of America.
| | - Allison W Kurian
- Department of Medicine and Epidemiology and Population Health, Stanford University, 900 Blake Wilbur Drive, 1st Floor, Palo Alto, CA 94304, United States of America.
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Wang Y, Pang X, Liu Y, Mu G, Wang Q. SOCS1 acts as a ferroptosis driver to inhibit the progression and chemotherapy resistance of triple-negative breast cancer. Carcinogenesis 2023; 44:708-715. [PMID: 37665951 DOI: 10.1093/carcin/bgad060] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/16/2023] [Accepted: 08/31/2023] [Indexed: 09/06/2023] Open
Abstract
OBJECTIVES Ferroptosis is involved in many types of cancers, including triple-negative breast cancer (TNBC). Suppressor of cytokine signaling 1 (SOCS1) has recently been implicated as a regulator of ferroptosis. We aim to explore whether targeting SOCS1 is a potential therapeutic strategy for TNBC therapy. METHODS Stable cell lines were constructed using lentivirus transfection. Cell viability was determined using CCK-8 and cell colony formation assays, respectively. Assays including lactate dehydrogenase release, lipid peroxidation and malondialdehyde assays were conducted to evaluate ferroptosis. Real-time quantitative polymerase chain reaction and western blotting were performed to evaluate mRNA and protein expression, respectively. A xenograft animal model was established by subcutaneous injection of cells into the flank. RESULTS Our results showed that SOCS1 overexpression inhibited cell proliferation and induced ferroptosis in TNBC cells, while SOCS1 knockdown promoted cell proliferation and reduced ferroptosis. We also found that SOCS1 regulated ferroptosis by modulating GPX4 expression. Furthermore, SOCS1 regulated cisplatin resistance in TNBC cells by promoting ferroptosis. Our in vivo data suggested that SOCS1 regulated tumor growth and cisplatin resistance in vivo. CONCLUSIONS SOCS1 inhibits the progression and chemotherapy resistance of TNBC by regulating GPX4 expression.
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Affiliation(s)
- Yiding Wang
- Department of Urology, Liaoning Cancer Hospital and Institute/Cancer Hospital of China Medical University, No. 44 Xiaoheyan Road, Dadong District, Shenyang 110042, Liaoning, China
| | - Xiaoling Pang
- Emergency Department, the Fourth Affiliated Hospital of China Medical University, No. 4 Chongshandong Road, Huanggu District, Shenyang 110032, Liaoning, China
| | - Yuexin Liu
- Emergency Department, the Fourth Affiliated Hospital of China Medical University, No. 4 Chongshandong Road, Huanggu District, Shenyang 110032, Liaoning, China
| | - Guiling Mu
- Central Laboratory, Liaoning Cancer Hospital and Institute/Cancer Hospital of China Medical University, No. 44 Xiaoheyan Road, Dadong District, Shenyang 110042, Liaoning, China
| | - Qian Wang
- Medical Oncology, Department of Gastrointestinal Cancer, Liaoning Cancer Hospital and Institute/Cancer Hospital of China Medical University, No. 44 Xiaoheyan Road, Dadong District, Shenyang 110042, Liaoning, China
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Sankofi BM, Valencia-Rincón E, Sekhri M, Ponton-Almodovar AL, Bernard JJ, Wellberg EA. The impact of poor metabolic health on aggressive breast cancer: adipose tissue and tumor metabolism. Front Endocrinol (Lausanne) 2023; 14:1217875. [PMID: 37800138 PMCID: PMC10548218 DOI: 10.3389/fendo.2023.1217875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 08/30/2023] [Indexed: 10/07/2023] Open
Abstract
Obesity and type 2 diabetes are chronic metabolic diseases that impact tens to hundreds of millions of adults, especially in developed countries. Each condition is associated with an elevated risk of breast cancer and with a poor prognosis after treatment. The mechanisms connecting poor metabolic health to breast cancer are numerous and include hyperinsulinemia, inflammation, excess nutrient availability, and adipose tissue dysfunction. Here, we focus on adipose tissue, highlighting important roles for both adipocytes and fibroblasts in breast cancer progression. One potentially important mediator of adipose tissue effects on breast cancer is the fibroblast growth factor receptor (FGFR) signaling network. Among the many roles of FGFR signaling, we postulate that key mechanisms driving aggressive breast cancer include epithelial-to-mesenchymal transition and cellular metabolic reprogramming. We also pose existing questions that may help better understand breast cancer biology in people with obesity, type 2 diabetes, and poor metabolic health.
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Affiliation(s)
- Barbara Mensah Sankofi
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Estefania Valencia-Rincón
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Malika Sekhri
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Adriana L. Ponton-Almodovar
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, United States
- Nicolas V. Perricone Division of Dermatology, Michigan State University, East Lansing, MI, United States
- Department of Medicine, Michigan State University, East Lansing, MI, United States
| | - Jamie J. Bernard
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, United States
- Nicolas V. Perricone Division of Dermatology, Michigan State University, East Lansing, MI, United States
- Department of Medicine, Michigan State University, East Lansing, MI, United States
| | - Elizabeth A. Wellberg
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
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7
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Mao X, Omeogu C, Karanth S, Joshi A, Meernik C, Wilson L, Clark A, Deveaux A, He C, Johnson T, Barton K, Kaplan S, Akinyemiju T. Association of reproductive risk factors and breast cancer molecular subtypes: a systematic review and meta-analysis. BMC Cancer 2023; 23:644. [PMID: 37430191 DOI: 10.1186/s12885-023-11049-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 06/08/2023] [Indexed: 07/12/2023] Open
Abstract
BACKGROUND Associations between reproductive factors and breast cancer (BC) risk vary by molecular subtype (i.e., luminal A, luminal B, HER2, and triple negative/basal-like [TNBC]). In this systematic review and meta-analysis, we summarized the associations between reproductive factors and BC subtypes. METHODS Studies from 2000 to 2021 were included if BC subtype was examined in relation to one of 11 reproductive risk factors: age at menarche, age at menopause, age at first birth, menopausal status, parity, breastfeeding, oral contraceptive (OC) use, hormone replacement therapy (HRT), pregnancy, years since last birth and abortion. For each reproductive risk factor, BC subtype, and study design (case-control/cohort or case-case), random-effects models were used to estimate pooled relative risks and 95% confidence intervals. RESULTS A total of 75 studies met the inclusion criteria for systematic review. Among the case-control/cohort studies, later age at menarche and breastfeeding were consistently associated with decreased risk of BC across all subtypes, while later age at menopause, later age of first childbirth, and nulliparity/low parity were associated with increased risk of luminal A, luminal B, and HER2 subtypes. In the case-only analysis, compared to luminal A, postmenopausal status increased the risk of HER2 and TNBC. Associations were less consistent across subtypes for OC and HRT use. CONCLUSION Identifying common risk factors across BC subtypes can enhance the tailoring of prevention strategies, and risk stratification models can benefit from subtype specificity. Adding breastfeeding status to current BC risk prediction models can enhance predictive ability, given the consistency of the associations across subtypes.
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Affiliation(s)
- Xihua Mao
- Department of Epidemiology, College of Public Health, University of Kentucky, Lexington, KY, USA
| | - Chioma Omeogu
- Department of Population Health Sciences, School of Medicine, Duke University, Durham, NC, USA
| | - Shama Karanth
- UF Health Cancer Canter, University of Florida, Gainesville, FL, USA
| | - Ashwini Joshi
- Department of Population Health Sciences, School of Medicine, Duke University, Durham, NC, USA
| | - Clare Meernik
- Department of Population Health Sciences, School of Medicine, Duke University, Durham, NC, USA
| | - Lauren Wilson
- Department of Population Health Sciences, School of Medicine, Duke University, Durham, NC, USA
| | - Amy Clark
- Department of Population Health Sciences, School of Medicine, Duke University, Durham, NC, USA
| | - April Deveaux
- Department of Population Health Sciences, School of Medicine, Duke University, Durham, NC, USA
| | - Chunyan He
- The Cancer Prevention and Control Research Program, University of Kentucky Markey Cancer Center, Lexington, KY, USA
| | - Tisha Johnson
- Department of Preventive Medicine and Environmental Health, College of Public Health, University of Kentucky, Lexington, KY, USA
| | - Karen Barton
- Duke University Medical Center Library & Archives, Duke University School of Medicine, Durham, NC, USA
| | - Samantha Kaplan
- Duke University Medical Center Library & Archives, Duke University School of Medicine, Durham, NC, USA
| | - Tomi Akinyemiju
- Department of Population Health Sciences, School of Medicine, Duke University, Durham, NC, USA.
- Duke Cancer Institute, Duke University, Durham, NC, USA.
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8
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Kast K, John EM, Hopper JL, Andrieu N, Noguès C, Mouret-Fourme E, Lasset C, Fricker JP, Berthet P, Mari V, Salle L, Schmidt MK, Ausems MGEM, Garcia EBG, van de Beek I, Wevers MR, Evans DG, Tischkowitz M, Lalloo F, Cook J, Izatt L, Tripathi V, Snape K, Musgrave H, Sharif S, Murray J, Colonna SV, Andrulis IL, Daly MB, Southey MC, de la Hoya M, Osorio A, Foretova L, Berkova D, Gerdes AM, Olah E, Jakubowska A, Singer CF, Tan Y, Augustinsson A, Rantala J, Simard J, Schmutzler RK, Milne RL, Phillips KA, Terry MB, Goldgar D, van Leeuwen FE, Mooij TM, Antoniou AC, Easton DF, Rookus MA, Engel C. Associations of height, body mass index, and weight gain with breast cancer risk in carriers of a pathogenic variant in BRCA1 or BRCA2: the BRCA1 and BRCA2 Cohort Consortium. Breast Cancer Res 2023; 25:72. [PMID: 37340476 PMCID: PMC10280955 DOI: 10.1186/s13058-023-01673-w] [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: 12/16/2022] [Accepted: 06/10/2023] [Indexed: 06/22/2023] Open
Abstract
INTRODUCTION Height, body mass index (BMI), and weight gain are associated with breast cancer risk in the general population. It is unclear whether these associations also exist for carriers of pathogenic variants in the BRCA1 or BRCA2 genes. PATIENTS AND METHODS An international pooled cohort of 8091 BRCA1/2 variant carriers was used for retrospective and prospective analyses separately for premenopausal and postmenopausal women. Cox regression was used to estimate breast cancer risk associations with height, BMI, and weight change. RESULTS In the retrospective analysis, taller height was associated with risk of premenopausal breast cancer for BRCA2 variant carriers (HR 1.20 per 10 cm increase, 95% CI 1.04-1.38). Higher young-adult BMI was associated with lower premenopausal breast cancer risk for both BRCA1 (HR 0.75 per 5 kg/m2, 95% CI 0.66-0.84) and BRCA2 (HR 0.76, 95% CI 0.65-0.89) variant carriers in the retrospective analysis, with consistent, though not statistically significant, findings from the prospective analysis. In the prospective analysis, higher BMI and adult weight gain were associated with higher postmenopausal breast cancer risk for BRCA1 carriers (HR 1.20 per 5 kg/m2, 95% CI 1.02-1.42; and HR 1.10 per 5 kg weight gain, 95% CI 1.01-1.19, respectively). CONCLUSION Anthropometric measures are associated with breast cancer risk for BRCA1 and BRCA2 variant carriers, with relative risk estimates that are generally consistent with those for women from the general population.
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Affiliation(s)
- Karin Kast
- Center for Hereditary Breast and Ovarian Cancer, Center for Integrated Oncology (CIO), Medical Faculty, University Hospital Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
| | - Esther M John
- Department of Epidemiology & Population Health and of Medicine (Oncology), Stanford University School of Medicine, Stanford, CA, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - John L Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Nadine Andrieu
- INSERM U900, Paris, France
- Institut Curie, Paris, France
- Mines Paris Tech, Fontainebleau, France
- PSL Research University, Paris, France
| | - Catherine Noguès
- Aix Marseille Université, INSERM, IRD, SESSTIM, Marseille, France
- Département d'Anticipation et de Suivi Des Cancers, Oncogénétique Clinique, Institut Paoli-Calmettes, Marseille, France
| | | | | | | | | | | | - Lucie Salle
- Oncogénétique Poitou-Charentes, Niort, France
| | - Marjanka K Schmidt
- Division of Molecular Pathology, Netherlands Cancer Institute, Antoni Van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Margreet G E M Ausems
- Department of Genetics, Division Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Irma van de Beek
- Department of Human Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Marijke R Wevers
- Department of Clinical Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - D Gareth Evans
- The Prevent Breast Cancer Research Unit, The Nightingale Centre, Manchester University NHS Foundation Trust, Manchester, UK
- Genomic Medicine, Division of Evolution and Genomic Sciences, The University of Manchester, St Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
- Manchester Breast Centre, Oglesby Cancer Research Centre, The Christie, University of Manchester, Manchester, UK
| | - Marc Tischkowitz
- Department of Medical Genetics, National Institute for Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, UK
| | - Fiona Lalloo
- Clinical Genetics Service, Manchester Centre for Genomic Medicine, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Jackie Cook
- Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield, UK
| | - Louise Izatt
- Department of Clinical Genetics, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Vishakha Tripathi
- Clinical Genetics Service, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Katie Snape
- Department of Clinical Genetics, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Hannah Musgrave
- Yorkshire Regional Genetics Service, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Saba Sharif
- West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham, UK
| | - Jennie Murray
- Yorkshire Regional Genetics Service, Leeds Teaching Hospitals NHS Trust, Leeds, UK
- West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham, UK
- South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh, UK
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Sarah V Colonna
- Department of Medicine and Huntsman Cancer Institute, University of Utah Health, Salt Lake City, UT, USA
| | - Irene L Andrulis
- Fred A. Litwin Center for Cancer Genetics, Lunenfeld-Tanenbaum Research Institute of Mount Sinai Hospital, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Mary B Daly
- Department of Clinical Genetics, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Melissa C Southey
- Precision Medicine, School of Clinical Sciences at, Monash Health Monash University, Clayton, VIC, Australia
- Department of Clinical Pathology, The University of Melbourne, Melbourne, VIC, Australia
| | - Miguel de la Hoya
- Molecular Oncology Laboratory, Hospital Clínico San Carlos, IdISSC (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos), Madrid, Spain
| | - Ana Osorio
- Familial Cancer Clinical Unit, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO) and Spanish Network On Rare Diseases (CIBERER), Madrid, Spain
| | - Lenka Foretova
- Department of Cancer Epidemiology and Genetics, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Dita Berkova
- Department of Cancer Epidemiology and Genetics, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Anne-Marie Gerdes
- Department of Clinical Genetics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Edith Olah
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary
| | - Anna Jakubowska
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
- Independent Laboratory of Molecular Biology and Genetic Diagnostics, Pomeranian Medical University, Szczecin, Poland
| | - Christian F Singer
- Department of OB/GYN and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Yen Tan
- Department of OB/GYN and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Annelie Augustinsson
- Department of Oncology, Clinical Sciences in Lund, Lund University Hospital, Lund, Sweden
| | | | - Jacques Simard
- Genomics Center, Centre Hospitalier Universitaire de Québec-Université Laval Research Center, Quebec City, QC, Canada
| | - Rita K Schmutzler
- Center for Hereditary Breast and Ovarian Cancer, Center for Integrated Oncology (CIO), Medical Faculty, University Hospital Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Roger L Milne
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, VIC, Australia
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC, Australia
| | - Kelly-Anne Phillips
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Australia
- Department of Medical Oncology, Peter MacCallum Cancer Centre, Victoria, Australia
| | - Mary Beth Terry
- Department of Epidemiology, Mailman School of Public Health and the Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, USA
| | - David Goldgar
- Department of Dermatology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Flora E van Leeuwen
- Department of Epidemiology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Thea M Mooij
- Department of Epidemiology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Antonis C Antoniou
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Douglas F Easton
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Matti A Rookus
- Department of Epidemiology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Christoph Engel
- Institute for Medical Informatics, Statistics and Epidemiology, Leipzig University, Leipzig, Germany
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9
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Gugu TH, Eze CO, Kenechukwu FC, Khumaini Mudhar Bintang MA, Patil SB, Basarkar GD, Attama AA, Ibezim EC, Upasani CD, Srichana T. Mechanistic insight into the bioactivity of prodigiosin-entrapped lipid nanoparticles against triple-negative breast, lung and colon cancer cell lines. Heliyon 2023; 9:e16963. [PMID: 37484262 PMCID: PMC10361034 DOI: 10.1016/j.heliyon.2023.e16963] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/02/2023] [Accepted: 06/02/2023] [Indexed: 07/25/2023] Open
Abstract
This research investigates the potentials of prodigiosin(PG) derived from bacteria and its formulations against triple-negative breast (TNB), lung, and colon cancer cells. The PG was extracted from S. marcescens using continuous batch culture, characterized, and formulated into lyophilized parenteral nanoparticles (PNPs). The formulations were characterized with respect to entrapment efficiency (EE), DSC, FT-IR, TEM, and proton nuclear magnetic resonance (1H NMR) spectroscopy. In vitro drug release was evaluated in phosphate buffer (pH 7.4) while acute toxicity, hematological and histopathological studies were performed on rats. The in vitro cytotoxicity was evaluated against TNB (MCF-7), lung (A-549), and colon (HT-29) cancer cell lines. High EE (92.3 ± 12%) and drug release of up to 89.4% within 8 h were obtained. DSC thermograms of PG and PG-PNPs showed endothermic peaks indicating amorphous nature. The FT-IR spectrum of PG-PNPs revealed remarkable peaks of pure PG, indicating no strong chemical interaction between the drug and excipients. The TEM micrograph of the PG-PNPs showed nano-sized formulations (20-30 nm) whose particles were mostly lamellar and hexagonal structures. The 1H NMR result revealed the chemical structure of PG showing all assigned proton chemical shifts. Toxicity results of the PG and its formulation up to a concentration of 5000 mg/kg showed insignificant vacuolar changes of hepatocytes in the liver, with normal renal medulla and cortex in the kidney. The PG and PG-PNPs inhibited the growth of breast, lung, and colon cell lines. The nano-sized lipid formulation (PG-PNPs) showed potential in PG delivery and cancer treatments.
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Affiliation(s)
- Thaddeus H. Gugu
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka. Enugu State, Nigeria
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Christopher O. Eze
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka. Enugu State, Nigeria
| | - Franklin C. Kenechukwu
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka. Enugu State, Nigeria
| | - Muhammd A. Khumaini Mudhar Bintang
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Sanjay B. Patil
- Department of Pharmaceutics, SNJB’s Shriman Sureshdada Jain College of Pharmacy, Chandwad, Savitribai Phule Pune University, Pune. (MS), India
| | - Ganesh D. Basarkar
- Department of Pharmaceutics, SNJB’s Shriman Sureshdada Jain College of Pharmacy, Chandwad, Savitribai Phule Pune University, Pune. (MS), India
| | - Anthony A. Attama
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka. Enugu State, Nigeria
| | - Emmanuel C. Ibezim
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka. Enugu State, Nigeria
| | - Chandrashekhar D. Upasani
- Department of Pharmacology and Toxicology, SNJB’s Shriman Sureshdada Jain College of Pharmacy, Chandwad, Savitribai Phule Pune University, Pune. (MS), India
| | - Teerapol Srichana
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
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10
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Kuziel G, Moore BN, Arendt LM. Obesity and Fibrosis: Setting the Stage for Breast Cancer. Cancers (Basel) 2023; 15:cancers15112929. [PMID: 37296891 DOI: 10.3390/cancers15112929] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Obesity is a rising health concern and is linked to a worsened breast cancer prognosis. Tumor desmoplasia, which is characterized by elevated numbers of cancer-associated fibroblasts and the deposition of fibrillar collagens within the stroma, may contribute to the aggressive clinical behavior of breast cancer in obesity. A major component of the breast is adipose tissue, and fibrotic changes in adipose tissue due to obesity may contribute to breast cancer development and the biology of the resulting tumors. Adipose tissue fibrosis is a consequence of obesity that has multiple sources. Adipocytes and adipose-derived stromal cells secrete extracellular matrix composed of collagen family members and matricellular proteins that are altered by obesity. Adipose tissue also becomes a site of chronic, macrophage-driven inflammation. Macrophages exist as a diverse population within obese adipose tissue and mediate the development of fibrosis through the secretion of growth factors and matricellular proteins and interactions with other stromal cells. While weight loss is recommended to resolve obesity, the long-term effects of weight loss on adipose tissue fibrosis and inflammation within breast tissue are less clear. Increased fibrosis within breast tissue may increase the risk for tumor development as well as promote characteristics associated with tumor aggressiveness.
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Affiliation(s)
- Genevra Kuziel
- Cancer Biology Graduate Program, University of Wisconsin-Madison, 1111 Highland Ave, Madison, WI 53705, USA
| | - Brittney N Moore
- Department of Comparative Biosciences, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53706, USA
| | - Lisa M Arendt
- Cancer Biology Graduate Program, University of Wisconsin-Madison, 1111 Highland Ave, Madison, WI 53705, USA
- Department of Comparative Biosciences, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53706, USA
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11
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Ayodeji SA, Bao B, Teslow EA, Polin LA, Dyson G, Bollig-Fischer A, Fehl C. Hyperglycemia and O-GlcNAc transferase activity drive a cancer stem cell pathway in triple-negative breast cancer. Cancer Cell Int 2023; 23:102. [PMID: 37231419 PMCID: PMC10210312 DOI: 10.1186/s12935-023-02942-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 05/10/2023] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND Enhanced glucose metabolism is a feature of most tumors, but downstream functional effects of aberrant glucose flux are difficult to mechanistically determine. Metabolic diseases including obesity and diabetes have a hyperglycemia component and are correlated with elevated pre-menopausal cancer risk for triple-negative breast cancer (TNBC). However, determining pathways for hyperglycemic disease-coupled cancer risk remains a major unmet need. One aspect of cellular sugar utilization is the addition of the glucose-derived protein modification O-GlcNAc (O-linked N-acetylglucosamine) via the single human enzyme that catalyzes this process, O-GlcNAc transferase (OGT). The data in this report implicate roles of OGT and O-GlcNAc within a pathway leading to cancer stem-like cell (CSC) expansion. CSCs are the minor fraction of tumor cells recognized as a source of tumors as well as fueling metastatic recurrence. The objective of this study was to identify a novel pathway for glucose-driven expansion of CSC as a potential molecular link between hyperglycemic conditions and CSC tumor risk factors. METHODS We used chemical biology tools to track how a metabolite of glucose, GlcNAc, became linked to the transcriptional regulatory protein tet-methylcytosine dioxygenase 1 (TET1) as an O-GlcNAc post-translational modification in three TNBC cell lines. Using biochemical approaches, genetic models, diet-induced obese animals, and chemical biology labeling, we evaluated the impact of hyperglycemia on CSC pathways driven by OGT in TNBC model systems. RESULTS We showed that OGT levels were higher in TNBC cell lines compared to non-tumor breast cells, matching patient data. Our data identified that hyperglycemia drove O-GlcNAcylation of the protein TET1 via OGT-catalyzed activity. Suppression of pathway proteins by inhibition, RNA silencing, and overexpression confirmed a mechanism for glucose-driven CSC expansion via TET1-O-GlcNAc. Furthermore, activation of the pathway led to higher levels of OGT production via feed-forward regulation in hyperglycemic conditions. We showed that diet-induced obesity led to elevated tumor OGT expression and O-GlcNAc levels in mice compared to lean littermates, suggesting relevance of this pathway in an animal model of the hyperglycemic TNBC microenvironment. CONCLUSIONS Taken together, our data revealed a mechanism whereby hyperglycemic conditions activated a CSC pathway in TNBC models. This pathway can be potentially targeted to reduce hyperglycemia-driven breast cancer risk, for instance in metabolic diseases. Because pre-menopausal TNBC risk and mortality are correlated with metabolic diseases, our results could lead to new directions including OGT inhibition for mitigating hyperglycemia as a risk factor for TNBC tumorigenesis and progression.
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Affiliation(s)
- Saheed A Ayodeji
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI, USA
| | - Bin Bao
- Department of Oncology, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Emily A Teslow
- Department of Oncology, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Lisa A Polin
- Department of Oncology, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Greg Dyson
- Department of Oncology, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Aliccia Bollig-Fischer
- Department of Oncology, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Charlie Fehl
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI, USA.
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12
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Yin Y, Yan Y, Fan B, Huang W, Zhang J, Hu HY, Li X, Xiong D, Chou SL, Xiao Y, Wang H. Novel Combination Therapy for Triple-Negative Breast Cancer based on an Intelligent Hollow Carbon Sphere. RESEARCH (WASHINGTON, D.C.) 2023; 6:0098. [PMID: 37223478 PMCID: PMC10202191 DOI: 10.34133/research.0098] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 02/27/2023] [Indexed: 08/13/2023]
Abstract
Triple-negative breast cancer (TNBC) is a subtype of breast cancer with high mortality, and the efficacy of monotherapy for TNBC is still disappointing. Here, we developed a novel combination therapy for TNBC based on a multifunctional nanohollow carbon sphere. This intelligent material contains a superadsorbed silicon dioxide sphere, sufficient loading space, a nanoscale hole on its surface, a robust shell, and an outer bilayer, and it could load both programmed cell death protein 1/programmed cell death ligand 1 (PD-1/PD-L1) small-molecule immune checkpoints and small-molecule photosensitizers with excellent loading contents, protect these small molecules during the systemic circulation, and achieve accumulation of them in tumor sites after systemic administration followed by the application of laser irradiation, thereby realizing dual attack of photodynamic therapy and immunotherapy on tumors. Importantly, we integrated the fasting-mimicking diet condition that can further enhance the cellular uptake efficiency of nanoparticles in tumor cells and amplify the immune responses, further enhancing the therapeutic effect. Thus, a novel combination therapy "PD-1/PD-L1 immune checkpoint blockade + photodynamic therapy + fasting-mimicking diet"was developed with the aid of our materials, which eventually achieved a marked therapeutic effect in 4T1-tumor-bearing mice. The concept can also be applied to the clinical treatment of human TNBC with guiding significance in the future.
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Affiliation(s)
- Yue Yin
- School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Yaping Yan
- College of Materials Engineering, Henan University of Engineering, Xinzheng 451191, China
| | - Biao Fan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Wenping Huang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hai-Yan Hu
- Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xiaoqiong Li
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Dongbin Xiong
- Institute of Advanced Materials, Hubei Normal University, Huangshi 415000, China
| | - Shu-Lei Chou
- Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yao Xiao
- Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Hai Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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13
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Eom KY, Berg KA, Joseph NE, Runner K, Tarabichi Y, Khiyami A, Perzynski AT, Sossey-Alaoui K. Neighborhood and racial influences on triple negative breast cancer: evidence from Northeast Ohio. Breast Cancer Res Treat 2023; 198:369-381. [PMID: 36781520 PMCID: PMC10716786 DOI: 10.1007/s10549-023-06883-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 02/02/2023] [Indexed: 02/15/2023]
Abstract
PURPOSE Triple negative breast cancer (TNBC) is an aggressive subtype of breast cancer (BC) with higher recurrence rates and poorer prognoses and most prevalent among non-Hispanic Black women. Studies of multiple health conditions and care processes suggest that neighborhood socioeconomic position is a key driver of health disparities. We examined roles of patients' neighborhood-level characteristics and race on prevalence, stage at diagnosis, and mortality among patients diagnosed with BC at a large safety-net healthcare system in Northeast Ohio. METHODS We used tumor registry to identify BC cases from 2007 to 2020 and electronic health records and American Community Survey for individual- and area-level factors. We performed multivariable regression analyses to estimate associations between neighborhood-level characteristics, measured by the Area Deprivation Index (ADI), race and comparative TNBC prevalence, stage at diagnosis, and total mortality. RESULTS TNBC was more common among non-Hispanic Black (53.7%) vs. non-Hispanic white patients (46.4%). Race and ADI were individually significant predictors of TNBC prevalence, stage at diagnosis, and total mortality. Race remained significantly associated with TNBC subtype, adjusting for covariates. Accounting for TNBC status, a more disadvantaged neighborhood was significantly associated with a worse stage at diagnosis and higher death rates. CONCLUSION Our findings suggest that both neighborhood socioeconomic position and race are strongly associated with TNBC vs. other BC subtypes. The burden of TNBC appears to be highest among Black women in the most socioeconomically disadvantaged neighborhoods. Our study suggests a complex interplay of social conditions and biological disease characteristics contributing to racial disparities in BC outcomes.
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Affiliation(s)
- Kirsten Y Eom
- Center for Health Care Research and Policy, The MetroHealth System and Case Western Reserve University, 2500 MetroHealth Dr. Rammelkamp Building R225, Cleveland, OH, 44109, USA.
| | - Kristen A Berg
- Center for Health Care Research and Policy, The MetroHealth System and Case Western Reserve University, 2500 MetroHealth Dr. Rammelkamp Building R225, Cleveland, OH, 44109, USA
| | - Natalie E Joseph
- Division of Surgical Oncology, MetroHealth Medical Center and Case Western Reserve University, Cleveland, OH, USA
| | - Kristen Runner
- Division of Surgical Oncology, MetroHealth Medical Center and Case Western Reserve University, Cleveland, OH, USA
| | - Yasir Tarabichi
- Division of Pulmonary, Critical Care, and Sleep Medicine, MetroHealth Medical Center of Case Western Reserve University, Cleveland, OH, USA
| | - Amer Khiyami
- Department of Pathology, MetroHealth Medical Center, Cleveland, OH, USA
| | - Adam T Perzynski
- Center for Health Care Research and Policy, The MetroHealth System and Case Western Reserve University, 2500 MetroHealth Dr. Rammelkamp Building R225, Cleveland, OH, 44109, USA
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14
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Satish S, Moore JF, Littlefield JM, Bishop IJ, Rojas KE. Re-Evaluating the Association Between Hormonal Contraception and Breast Cancer Risk. BREAST CANCER (DOVE MEDICAL PRESS) 2023; 15:227-235. [PMID: 36987503 PMCID: PMC10040158 DOI: 10.2147/bctt.s390664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 02/15/2023] [Indexed: 03/30/2023]
Abstract
This review aims to summarize and assess key studies investigating the relationship between hormonal contraception and breast cancer risk. Approximately two-thirds of breast cancers express the estrogen receptor, and long-term exposure to estrogen is a debated risk factor for breast cancer development. This hypothesis is based on prior studies looking at reproductive risk factors (endogenous estrogen exposure) along with hormone replacement therapy (exogenous hormone exposure). Historically accepted reproductive risk factors include age at menarche, age at first delivery, and parity. Exogenous hormone exposure encompasses both receipt of hormonal contraception and menopausal hormone replacement therapy. This review highlights the reported risks associated with the most common hormonal contraception methods including oral, transdermal, and transvaginal routes. Large observational studies of the past and more recent works are summarized highlighting gaps in knowledge. Several themes emerge: difficulty accounting for well-established risk factors in analyses of epidemiologic studies, challenges determining whether associations between hormonal contraception and breast cancer are due to the exogenous hormones themselves or to increased engagement with the medical system, and discrepancies between statistically significant and clinically significant risk, odds, and hazard ratios. Understanding the strengths and limitations of these studies will help providers in and outside of oncology support women making decisions regarding both cancer risk-reduction and family planning.
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Affiliation(s)
- Sanjana Satish
- University of Miami Miller Medical School, Miami, FL, USA
- Correspondence: Sanjana Satish, University of Miami Miller School of Medicine, 1600 NW 10th Ave #1140, Miami, FL, 33136, USA, Email
| | - Jessica F Moore
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL, USA
| | | | - Ian J Bishop
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Kristin E Rojas
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL, USA
- Dewitt-Daughtry Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
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15
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Suba Z. Rosetta Stone for Cancer Cure: Comparison of the Anticancer Capacity of Endogenous Estrogens, Synthetic Estrogens and Antiestrogens. Oncol Rev 2023; 17:10708. [PMID: 37152665 PMCID: PMC10154579 DOI: 10.3389/or.2023.10708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 03/30/2023] [Indexed: 05/09/2023] Open
Abstract
This work presents the history of the recognition of principal regulatory capacities of estrogen hormones having been mistakenly regarded as breast cancer promoting agents for more than 120 years. Comprehensive analysis of the results of clinical, epidemiological, immunological and molecular studies justified that endogenous estrogens are the principal regulators of embryonic development, survival and reproduction via orchestrating appropriate expression and even edition of all genes in mammalians. Medical use of chemically modified synthetic estrogens caused toxic complications; thromboembolic events and increased cancer risk in female organs as they proved to be endocrine disruptors deregulating estrogen receptors (ERs) rather than their activators. Synthetic estrogen treatment exhibits ambiguous correlations with cancer risk at different sites, which may be attributed to an inhibition of the unliganded activation of estrogen receptors (ERs) coupled with compensatory liganded activation. The principle of estrogen induced breast cancer led to the introduction of antiestrogen therapies against this tumor; inhibition of the liganded activation of estrogen receptors and aromatase enzyme activity. The initial enthusiasm turned into disappointment as the majority of breast cancers proved to be primarily resistant to antiestrogens. In addition, nearly all patients showing earlier good tumor responses to endocrine therapy, later experienced secondary resistance leading to metastatic disease and fatal outcome. Studying the molecular events in tumors responsive and unresponsive to antiestrogen therapy, it was illuminated that a complete inhibition of liganded ER activation stimulates the growth of cancers, while a successful compensatory upregulation of estrogen signal may achieve DNA restoration, tumor regression and patient's survival. Recognition of the principal role of endogenous estrogens in gene expression, gene edition and DNA repair, estrogen treatment and stimulation of ER expression in patients may bring about a great turn in medical practice.
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16
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Sghaier I, Zidi S, El-Ghali RM, Daldoul A, Aimagambetova G, Almawi WY. Unique ESR1 and ESR2 estrogen receptor gene variants associated with altered risk of triple-negative breast cancer: A case-control study. Gene 2023; 851:146969. [DOI: 10.1016/j.gene.2022.146969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 09/26/2022] [Accepted: 10/11/2022] [Indexed: 11/05/2022]
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17
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Barańska A. Oral Contraceptive Use and Assessment of Breast Cancer Risk among Premenopausal Women via Molecular Characteristics: Systematic Review with Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15363. [PMID: 36430082 PMCID: PMC9691184 DOI: 10.3390/ijerph192215363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/06/2022] [Accepted: 11/19/2022] [Indexed: 06/16/2023]
Abstract
Breast cancer is divided into four molecular subtypes. Each one has distinct clinical features. The aim of this study was to assess individual breast cancer subtype risk in premenopausal women taking oral contraceptives (OCs). Databases (MEDLINE; PubMed, EMBASE, and the Cochrane Library) were searched to January 2022 to identify case-control studies meeting the inclusion criteria. The influence of OCs intake on the risk of ER-positive breast cancer (ER+BC) was revealed to be non-significant with regard to reduction: OR = 0.9134, 95% CI: 0.8128 to 1.0265, p = 0.128. Assessment of ER-negative subtype breast cancer (ER-BC) risk indicated that OCs use significantly increased the risk: OR = 1.3079, 95% CI: 1.0003 to 1.7100, p = 0.050. Analysis for HER2-positive breast cancer (HER2+BC) risk showed that OCs use statistically non-significantly lowered the risk: OR = 0.8810, 95% CI: 0.5977 to 1.2984, p = 0.522. Meta-analysis with regard to Triplet-negative breast cancer (TNBC) risk showed non-statistically significant increased risk: OR = 1.553, 95% CI: 0.99 to 2.43, p = 0.055. The findings of the meta-analysis suggest that breast cancer risk in premenopausal women may vary with respect to molecular subtypes. Extensive scientific work is still necessary in order to understand the impact of OCs use on breast cancer risk in young women.
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Affiliation(s)
- Agnieszka Barańska
- Department of Medical Informatics and Statistics with e-Health Lab, Medical University of Lublin, 20-094 Lublin, Poland
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18
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Ferraiuolo RM, Fifield BA, Hamm C, Porter LA. Stabilization of c-Myc by the atypical cell cycle regulator, Spy1, decreases efficacy of breast cancer treatments. Breast Cancer Res Treat 2022; 196:17-30. [PMID: 36029387 DOI: 10.1007/s10549-022-06715-z] [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: 05/11/2022] [Accepted: 08/14/2022] [Indexed: 11/02/2022]
Abstract
PURPOSE c-Myc is frequently upregulated in breast cancers, however, targeting c-Myc has proven to be a challenge. Targeting of downstream mediators of c-Myc, such as the 'cyclin-like' cell cycle regulator Spy1, may be a viable therapeutic option in a subset of breast cancer subtypes. METHODS Mouse mammary tumor cells isolated from MMTV-Myc mice and human breast cancer cell lines were used to manipulate Spy1 levels followed by tamoxifen or chemotherapeutic treatment with a variety of endpoints. Patient samples from TNBC patients were obtained and constructed into a TMA and stained for c-Myc and Spy1 protein levels. RESULTS Over time, MMTV-Myc cells show a decreased response to tamoxifen treatment with increasing levels of Spy1 in the tamoxifen-resistant cells. shRNA against Spy1 re-establishes tamoxifen sensitivity. Spy1 was found to be highly elevated in human TNBC cell and patient samples, correlating to c-Myc protein levels. c-Myc was found to be stabilized by Spy1 and knocking down Spy1 in TNBC cells shows a significant increase in response to chemotherapy treatments. CONCLUSION Understanding the interplay between protein expression level and response to treatment is a critical factor in developing novel treatment options for breast cancer patients. These data have shown a connection between Spy1 and c-Myc protein levels in more aggressive breast cancer cells and patient samples. Furthermore, targeting c-Myc has proven difficult, these data suggest targeting Spy1 even when c-Myc is elevated can confer an advantage to current chemotherapies.
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Affiliation(s)
- Rosa-Maria Ferraiuolo
- Department of Biomedical Sciences, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Bre-Anne Fifield
- Department of Biomedical Sciences, University of Windsor, Windsor, ON, N9B 3P4, Canada.,WE-SPARK Health Institute, Windsor, ON, N9B 3P4, Canada
| | - Caroline Hamm
- Department of Biomedical Sciences, University of Windsor, Windsor, ON, N9B 3P4, Canada.,Windsor Regional Cancer Centre, Windsor Regional Hospital, Windsor, ON, N9C 3E6, Canada.,Western University, Windsor, ON, N9B 3P4, Canada.,WE-SPARK Health Institute, Windsor, ON, N9B 3P4, Canada
| | - Lisa A Porter
- Department of Biomedical Sciences, University of Windsor, Windsor, ON, N9B 3P4, Canada. .,WE-SPARK Health Institute, Windsor, ON, N9B 3P4, Canada.
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19
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Kehm RD, Llanos AAM, McDonald JA, Tehranifar P, Terry MB. Evidence-Based Interventions for Reducing Breast Cancer Disparities: What Works and Where the Gaps Are? Cancers (Basel) 2022; 14:cancers14174122. [PMID: 36077659 PMCID: PMC9455068 DOI: 10.3390/cancers14174122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 01/26/2023] Open
Abstract
The National Cancer Institute (NCI) has established an online repository of evidence-based cancer control programs (EBCCP) and increasingly calls for the usage of these EBCCPs to reduce the cancer burden. To inventory existing EBCCPs and identify remaining gaps, we summarized NCI's EBCCPs relevant to reducing breast cancer risk with an eye towards interventions that address multiple levels of influence in populations facing breast cancer disparities. For each program, the NCI EBCCP repository provides the following expert panel determined summary metrics: (a) program ratings (1-5 scale, 5 best) of research integrity, intervention impact, and dissemination capability, and (b) RE-AIM framework assessment (0-100%) of program reach, effectiveness, adoption, and implementation. We quantified the number of EBCCPs that met the quality criteria of receiving a score of ≥3 for research integrity, intervention impact, and dissemination capability, and receiving a score of ≥50% for available RE-AIM reach, effectiveness, adoption, and implementation. For breast cancer risk reduction, we assessed the presence and quality of EBCCPs related to physical activity (PA), obesity, alcohol, tobacco control in early life, breastfeeding, and environmental chemical exposures. Our review revealed several major gaps in EBCCPs for reducing the breast cancer burden: (1) there are no EBCCPs for key breast cancer risk factors including alcohol, breastfeeding, and environmental chemical exposures; (2) among the EBCPPs that exist for PA, obesity, and tobacco control in early life, only a small fraction (24%, 17% and 31%, respectively) met all the quality criteria (≥3 EBCCP scores and ≥50% RE-AIM scores) and; (3) of those that met the quality criteria, only two PA interventions, one obesity, and no tobacco control interventions addressed multiple levels of influence and were developed in populations facing breast cancer disparities. Thus, developing, evaluating, and disseminating interventions to address important risk factors and reduce breast cancer disparities are needed.
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Affiliation(s)
- Rebecca D. Kehm
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 W 168th St, New York, NY 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, 1130 St Nicholas Ave, New York, NY 10033, USA
| | - Adana A. M. Llanos
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 W 168th St, New York, NY 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, 1130 St Nicholas Ave, New York, NY 10033, USA
| | - Jasmine A. McDonald
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 W 168th St, New York, NY 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, 1130 St Nicholas Ave, New York, NY 10033, USA
| | - Parisa Tehranifar
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 W 168th St, New York, NY 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, 1130 St Nicholas Ave, New York, NY 10033, USA
| | - Mary Beth Terry
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 W 168th St, New York, NY 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, 1130 St Nicholas Ave, New York, NY 10033, USA
- Correspondence: ; Tel.: +1-212-305-4915
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Triple negative breast cancer: approved treatment options and their mechanisms of action. J Cancer Res Clin Oncol 2022:10.1007/s00432-022-04189-6. [PMID: 35976445 DOI: 10.1007/s00432-022-04189-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/06/2022] [Indexed: 12/24/2022]
Abstract
PURPOSE Breast cancer, the most prevalent cancer worldwide, consists of 4 main subtypes, namely, Luminal A, Luminal B, HER2-positive, and Triple-negative breast cancer (TNBC). Triple-negative breast tumors, which do not express estrogen, progesterone, and HER2 receptors, account for approximately 15-20% of breast cancer cases. The lack of traditional receptor targets contributes to the heterogenous, aggressive, and refractory nature of these tumors, resulting in limited therapeutic strategies. METHODS Chemotherapeutics such as taxanes and anthracyclines have been the traditional go to treatment regimens for TNBC patients. Paclitaxel, docetaxel, doxorubicin, and epirubicin have been longstanding, Food and Drug Administration (FDA)-approved therapies against TNBC. Additionally, the FDA approved PARP inhibitors such as olaparib and atezolizumab to be used in combination with chemotherapies, primarily to improve their efficiency and reduce adverse patient outcomes. The immunotherapeutic Keytruda was the latest addition to the FDA-approved list of drugs used to treat TNBC. RESULTS The following review aims to elucidate current FDA-approved therapeutics and their mechanisms of action, shedding a light on the various strategies currently used to circumvent the treatment-resistant nature of TNBC cases. CONCLUSION The recent approval and use of therapies such as Trodelvy, olaparib and Keytruda has its roots in the development of an understanding of signaling pathways that drive tumour growth. In the future, the emergence of novel drug delivery methods may help increase the efficiency of these therapies whiel also reducing adverse side effects.
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21
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Hossain FM, Danos DM, Fu Q, Wang X, Scribner RA, Chu ST, Horswell RL, Price-Haywood EG, Collins-Burow BM, Wu XC, Ochoa AC, Miele L. Association of Obesity and Diabetes With the Incidence of Breast Cancer in Louisiana. Am J Prev Med 2022; 63:S83-S92. [PMID: 35725146 PMCID: PMC9973383 DOI: 10.1016/j.amepre.2022.02.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Breast cancer is a heterogeneous disease, consisting of multiple molecular subtypes. Obesity has been associated with an increased risk for postmenopausal breast cancer, but few studies have examined breast cancer subtypes separately. Obesity is often complicated by type 2 diabetes, but the possible association of diabetes with specific breast cancer subtypes remains poorly understood. METHODS In this retrospective case-control study, Louisiana Tumor Registry records of primary invasive breast cancer diagnosed in 2010-2015 were linked to electronic health records in the Louisiana Public Health Institute's Research Action for Health Network. Controls were selected from Research Action for Health Network and matched to cases by age and race. Conditional logistic regression was used to identify metabolic risk factors. Data analysis was conducted in 2020‒2021. RESULTS There was a significant association between diabetes and breast cancer for Luminal A, Triple-Negative Breast Cancer, and human epidermal growth factor 2‒positive subtypes. In multiple logistic regression, including both obesity status and diabetes as independent risk factors, Luminal A breast cancer was also associated with overweight status. Diabetes was associated with increased risk for Luminal A and Triple-Negative Breast Cancer in subgroup analyses, including women aged ≥50 years, Black women, and White women. CONCLUSIONS Although research has identified obesity and diabetes as risk factors for breast cancer, these results underscore that comorbid risk is complex and may differ by molecular subtype. There was a significant association between diabetes and the incidence of Luminal A, Triple-Negative Breast Cancer, and human epidermal growth factor 2‒positive breast cancer in Louisiana.
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Affiliation(s)
- Fokhrul M Hossain
- Department of Genetics, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana; Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Denise M Danos
- Department of Behavioral & Community Health Sciences (BCHS), School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Qiufan Fu
- Department of Biostatistics, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Xinnan Wang
- Department of Biostatistics, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Richard A Scribner
- Department of Epidemiology, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - San T Chu
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana
| | - Ronald L Horswell
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana
| | | | - Bridgette M Collins-Burow
- Hematology/Oncology, John W. Deming Department of Medicine, School of Medicine, Tulane University, New Orleans, Louisiana
| | - Xiao-Cheng Wu
- Department of Epidemiology, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana; Louisiana Tumor Registry, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Augusto C Ochoa
- Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana; Department of Interdisciplinary Oncology, Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Lucio Miele
- Department of Genetics, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana; Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana.
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22
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Burchardt NA, Eliassen AH, Shafrir AL, Rosner B, Tamimi RM, Kaaks R, Tworoger SS, Fortner RT. Oral contraceptive use by formulation and breast cancer risk by subtype in the Nurses' Health Study II: a prospective cohort study. Am J Obstet Gynecol 2022; 226:821.e1-821.e26. [PMID: 34921803 DOI: 10.1016/j.ajog.2021.12.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/30/2021] [Accepted: 12/08/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND Oral contraceptive use has been associated with a higher breast cancer risk; however, evidence for the associations between different oral contraceptive formulations and breast cancer risk, especially by disease subtype, is limited. OBJECTIVE This study aimed to evaluate the associations between oral contraceptive use by formulation and breast cancer risk by disease subtype. STUDY DESIGN This prospective cohort study included 113,187 women from the Nurses' Health Study II with recalled information on oral contraceptive usage from 13 years of age to baseline (1989) and updated data on usage until 2009 collected via biennial questionnaires. A total of 5799 breast cancer cases were identified until the end of 2017. Multivariable Cox proportional hazards models estimated hazard ratios and 95% confidence intervals for the associations between oral contraceptive use and breast cancer risk overall and by estrogen and progesterone receptor and human epidermal growth factor receptor 2 status. Oral contraceptive use was evaluated by status of use (current, former, and never), duration of and time since last use independently and cross-classified, and formulation (ie, estrogen and progestin type). RESULTS Current oral contraceptive use was associated with a higher risk for invasive breast cancer (hazard ratio, 1.31; 95% confidence interval, 1.09-1.58) when compared with never use, with stronger associations observed for longer durations of current use (>5 years: hazard ratio, 1.56; 95% confidence interval, 1.23-1.99; ≤5 years: hazard ratio, 1.19; 95% confidence interval, 0.95-1.49). Among former users with >5 years since cessation, the risk was similar to that of never users (eg, >5 to 10 years since cessation: hazard ratio, 0.99; 95% confidence interval, 0.88-1.11). Associations did not differ significantly by tumor subtype. In analyses by formulation, current use of formulations containing levonorgestrel in triphasic (hazard ratio, 2.83; 95% confidence interval, 1.98-4.03) and extended cycle regimens (hazard ratio, 3.49; 95% confidence interval, 1.28-9.53) and norgestrel in monophasic regimens (hazard ratio, 1.91; 95% confidence interval, 1.19-3.06), all combined with ethinyl estradiol, was associated with a higher breast cancer risk when compared with never oral contraceptive use. No association was observed for current use of the other progestin types evaluated (norethindrone, norethindrone acetate, ethynodiol diacetate, desogestrel, norgestimate, and drospirenone), however, sample sizes were relatively small for some of the subgroups, limiting these analyses. CONCLUSION Current oral contraceptive use was associated with a higher risk for invasive breast cancer regardless of disease subtype, however, the risk in former users was comparable with never users 5 years after cessation. In analyses by progestin type, associations were observed for select formulations containing levonorgestrel and norgestrel. Assessment of the associations for newer progestin types (desogestrel, norgestimate, drospirenone) was limited by sample size, and further research on more recently introduced progestins is warranted.
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24
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Reproductive Considerations for Patients with Early-Onset Breast Cancer. CURRENT BREAST CANCER REPORTS 2022. [DOI: 10.1007/s12609-022-00445-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Barańska A, Dolar-Szczasny J, Kanadys W, Kinik W, Ceglarska D, Religioni U, Rejdak R. Oral Contraceptive Use and Breast Cancer Risk According to Molecular Subtypes Status: A Systematic Review and Meta-Analysis of Case-Control Studies. Cancers (Basel) 2022; 14:cancers14030574. [PMID: 35158842 PMCID: PMC8833678 DOI: 10.3390/cancers14030574] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/19/2022] [Accepted: 01/21/2022] [Indexed: 01/10/2023] Open
Abstract
We conducted a systematic review and meta-analysis to investigate the effect of oral contraceptives (OCs) on risk of breast cancer (BrCa) by status of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2). We searched the MEDLINE (PubMed), Embase and the Cochrane Library database and bibliographies of pertinent articles published up to 2020. Therein, we identified nineteen eligible case-control studies which provided data by breast cancer subtypes: ER-positive (ER+), ER-negative (ER−), HER2-positive (HER2+) and Triplet-negative (TN). Summary risk estimates (pooled OR [pOR]) and 95% confidence intervals (CIs) were calculated using fixed/random effects models. The summary meta-analysis showed that over-use of OCs led to significant increased risk of TNBrCa (OR = 1.37, 95% CI; 1.13 to 1.67, p = 0.002), as well as of ER−BrCa (OR = 1.20, 95% CI: 1.03 to 1.40, p = 0.019). There was also a significant reduction in the risk of ER+BrCa (OR = O.92, 95% CI: 0.86 to 0.99, p = 0.026,) and a slight reduction in the risk of HER2+BrCa (OR = 0.95, 95% CI; 0.79 to 1.14, p = 0.561) after taking OCs. Meta-analysis indicated that OC use has different impacts on risk of breast cancer subtypes defined by receptor status. The identified differences between individual subtypes of breast cancer may reflect different mechanisms of carcinogenesis.
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Affiliation(s)
- Agnieszka Barańska
- Department of Medical Informatics and Statistics with E-Learning Lab, Medical University of Lublin, 20-090 Lublin, Poland
- Correspondence:
| | - Joanna Dolar-Szczasny
- Department of General and Pediatric Ophtalmology, Medical University of Lublin, 20-070 Lublin, Poland; (J.D.-S.); (R.R.)
| | | | - Wiktoria Kinik
- Science Popularization Centre, Medical University of Lublin, 20-059 Lublin, Poland;
| | - Dorota Ceglarska
- Subunit, Primary Health Care Center Provita, 20-093 Lublin, Poland;
| | - Urszula Religioni
- School of Public Health, Centre of Postgraduate Medical Education of Warsaw, 01-813 Warsaw, Poland;
- National Institute of Public Health-National Institute of Hygiene, Warsaw School of Economics, 02-554 Warsaw, Poland
| | - Robert Rejdak
- Department of General and Pediatric Ophtalmology, Medical University of Lublin, 20-070 Lublin, Poland; (J.D.-S.); (R.R.)
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Dias CJ, Helguero L, Faustino MAF. Current Photoactive Molecules for Targeted Therapy of Triple-Negative Breast Cancer. Molecules 2021; 26:7654. [PMID: 34946732 PMCID: PMC8709347 DOI: 10.3390/molecules26247654] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/13/2021] [Accepted: 12/15/2021] [Indexed: 01/10/2023] Open
Abstract
Cancer is the second leading cause of death worldwide; therefore, there is an urgent need to find safe and effective therapies. Triple-negative breast cancer (TNBC) is diagnosed in ca. 15-20% of BC and is extremely aggressive resulting in reduced survival rate, which is mainly due to the low therapeutic efficacy of available treatments. Photodynamic therapy (PDT) is an interesting therapeutic approach in the treatment of cancer; the photosensitizers with good absorption in the therapeutic window, combined with their specific targeting of cancer cells, have received particular interest. This review aims to revisit the latest developments on chlorin-based photoactive molecules for targeted therapy in TNBC. Photodynamic therapy, alone or combined with other therapies (such as chemotherapy or photothermal therapy), has potential to be a safe and a promising approach against TNBC.
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Affiliation(s)
- Cristina J. Dias
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
- Department of Medical Sciences, Institute of Biomedicine (iBiMED), University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Luisa Helguero
- Department of Medical Sciences, Institute of Biomedicine (iBiMED), University of Aveiro, 3810-193 Aveiro, Portugal;
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Anthocyanidins Inhibit Growth and Chemosensitize Triple-Negative Breast Cancer via the NF-κB Signaling Pathway. Cancers (Basel) 2021; 13:cancers13246248. [PMID: 34944868 PMCID: PMC8699375 DOI: 10.3390/cancers13246248] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/06/2021] [Accepted: 12/08/2021] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Breast cancer is the most common female cancer diagnosed in the U.S. and the second most common cause of cancer death in women. Chemotherapeutics used to treat breast cancer often have side effects, which are sometimes life-threatening. Moreover, the tumors can develop resistance over time, making breast cancer treatment challenging. In this paper, we show that the oral administration of colored pigments isolated from bilberry/blueberry, called anthocyanidins (Anthos), significantly decrease MDA-MB-231 orthoxenograft tumor volume, inhibit the growth and metastasis of breast cancer, sensitize drug-resistant tumor cells, and exhibit a lower rate of lymph node and lung metastasis, compared to control. Our results also suggest regulation of cell-cycle progression and inhibition of NF-κB activation as mechanisms underpinning the anti-proliferative activity of Anthos in breast cancer. These mechanistic insights are expected to be valuable for clinical translation of berry Anthos, either alone or as adjuvant to chemotherapy, for the treatment of breast cancer patients. Abstract Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer. Due to the lack of drug-targetable receptors, chemotherapy is the only systemic treatment option. Although chemotherapeutic drugs respond initially in TNBC, many patients relapse and have a poor prognosis. Poor survival after metastatic relapse is largely attributed to the development of resistance to chemotherapeutic drugs. In this study, we show that bilberry-derived anthocyanidins (Anthos) can inhibit the growth and metastasis of TNBC and chemosensitize paclitaxel (PAC)-resistant TNBC cells by modulating the NF-κB signaling pathway, as well as metastatic and angiogenic mediators. Anthos administered orally significantly decreased MDA-MB-231 orthoxenograft tumor volume and led to lower rates of lymph node and lung metastasis, compared to control. Treatment of PAC-resistant MDA-MB-231Tx cells with Anthos and PAC in combination lowered the IC50 of PAC by nearly 20-fold. The combination treatment also significantly (p < 0.01) decreased the tumor volume in MDA-MB-231Tx orthoxenografts, compared to control. In contrast, Anthos and PAC alone were ineffective against MDA-MB-231Tx tumors. Our approach of using Anthos to inhibit the growth and metastasis of breast cancers, as well as to chemosensitize PAC-resistant TNBC, provides a highly promising and effective strategy for the management of TNBC.
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Li C, Fan Z, Lin X, Cao M, Song F, Song F. Parity and risk of developing breast cancer according to tumor subtype: A systematic review and meta-analysis. Cancer Epidemiol 2021; 75:102050. [PMID: 34706325 DOI: 10.1016/j.canep.2021.102050] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 10/08/2021] [Accepted: 10/12/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Clinical breast cancer subtypes are categorized basing on the expression of hormone receptors and overexpression of the human epidermal growth factor receptor 2 (HER2). It is still unclear whether parity impact the risk of different breast cancer subtypes. METHODS We searched eight mainstream databases for published epidemiologic studies that assessed the relationship between parity and risk of breast cancer subtypes up to January 12, 2021. Parity number were unified into nulliparity and ever parity. The random-effects or fixed-effect models were used to calculate the pooled odds ratios (ORs) and 95% confidence intervals (CIs) among different subtypes. Restricted cubic spline analysis with four knots was applied to determine the relationship of parity number and risk of breast cancer subtypes. RESULTS We pooled sixteen case-control and four cohort studies, and performed an analysis including 7795 luminal A, 3576 luminal B, 1794 HER2-overexpressing, and 5192 triple-negative breast cancer cases among 1135131 participants. The combined ORs for ever parity versus nulliparity indicated a 34% reduction in luminal A risk (OR=0.66, 95% CI: 0.56-0.78), and a 29% reduction in luminal B risk (OR=0.71, 95% CI: 0.63-0.81), there was no significant association in HER2-overexpressing or TNBC risk. In the dose-response analysis, we observed a potentially non-linear and gradually increasing protective relationship between the number of parity and luminal breast cancer risk. CONCLUSIONS The effect of parity on breast cancer seems to vary among breast tumor subtypes, and it plays a protective role in luminal breast cancer.
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Affiliation(s)
- Chenyang Li
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology in Tianjin, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People's Republic of China
| | - Zeyu Fan
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology in Tianjin, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People's Republic of China
| | - Xiao Lin
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology in Tianjin, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People's Republic of China
| | - Mingli Cao
- Department of Chronic Diseases, Hexi District Center for Disease Control and Prevention, Tianjin 300211, People's Republic of China
| | - Fangfang Song
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology in Tianjin, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People's Republic of China
| | - Fengju Song
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology in Tianjin, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People's Republic of China.
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Wu Q, Siddharth S, Sharma D. Triple Negative Breast Cancer: A Mountain Yet to Be Scaled Despite the Triumphs. Cancers (Basel) 2021; 13:3697. [PMID: 34359598 PMCID: PMC8345029 DOI: 10.3390/cancers13153697] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/13/2021] [Accepted: 07/18/2021] [Indexed: 12/12/2022] Open
Abstract
Metastatic progression and tumor recurrence pertaining to TNBC are certainly the leading cause of breast cancer-related mortality; however, the mechanisms underlying TNBC chemoresistance, metastasis, and tumor relapse remain somewhat ambiguous. TNBCs show 77% of the overall 4-year survival rate compared to other breast cancer subtypes (82.7 to 92.5%). TNBC is the most aggressive subtype of breast cancer, with chemotherapy being the major approved treatment strategy. Activation of ABC transporters and DNA damage response genes alongside an enrichment of cancer stem cells and metabolic reprogramming upon chemotherapy contribute to the selection of chemoresistant cells, majorly responsible for the failure of anti-chemotherapeutic regime. These selected chemoresistant cells further lead to distant metastasis and tumor relapse. The present review discusses the approved standard of care and targetable molecular mechanisms in chemoresistance and provides a comprehensive update regarding the recent advances in TNBC management.
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Affiliation(s)
| | - Sumit Siddharth
- Department of Oncology, Johns Hopkins University School of Medicine and the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD 21231, USA;
| | - Dipali Sharma
- Department of Oncology, Johns Hopkins University School of Medicine and the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD 21231, USA;
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Shan P, Yang F, Qi H, Hu Y, Zhu S, Sun Z, Zhang Z, Wang C, Hou C, Yu J, Wang L, Zhou Z, Li P, Zhang H, Wang K. Alteration of MDM2 by the Small Molecule YF438 Exerts Antitumor Effects in Triple-Negative Breast Cancer. Cancer Res 2021; 81:4027-4040. [PMID: 33985974 DOI: 10.1158/0008-5472.can-20-0922] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 10/27/2020] [Accepted: 05/11/2021] [Indexed: 11/16/2022]
Abstract
Triple-negative breast cancer (TNBC) exhibits a high mortality rate and is the most aggressive subtype of breast cancer. As previous studies have shown that histone deacetylases (HDAC) may represent molecular targets for TNBC treatment, we screened a small library of synthetic molecules and identified a potent HDAC inhibitor (HDACi), YF438, which exerts effective anti-TNBC activity both in vitro and in vivo. Proteomic and biochemical studies revealed that YF438 significantly downregulated mouse double minute 2 homolog (MDM2) expression. In parallel, loss of MDM2 expression or blocking MDM2 E3 ligase activity rendered TNBC cells less sensitive to YF438 treatment, revealing an essential role of MDM2 E3 ligase activity in YF438-induced inhibition of TNBC. Mechanistically, YF438 disturbed the interaction between HDAC1 and MDM2, induced the dissociation of MDM2-MDMX, and subsequently increased MDM2 self-ubiquitination to accelerate its degradation, which ultimately inhibited growth and metastasis of TNBC cells. In addition, analysis of clinical tissue samples demonstrated high expression levels of MDM2 in TNBC, and MDM2 protein levels closely correlated with TNBC progression and metastasis. Collectively, these findings show that MDM2 plays an essential role in TNBC progression and targeting the HDAC1-MDM2-MDMX signaling axis with YF438 may provide a promising therapeutic option for TNBC. Furthermore, this novel underlying mechanism of a hydroxamate-based HDACi in altering MDM2 highlights the need for further development of HDACi for TNBC treatment. SIGNIFICANCE: This study uncovers the essential role of MDM2 in TNBC progression and suggests that targeting the HDAC1-MDM2-MDMX axis with a hydroxamate-based HDACi could be a promising therapeutic strategy for TNBC.
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Affiliation(s)
- Peipei Shan
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong, P.R. China
| | - Feifei Yang
- School of Biological Science and Technology, University of Jinan, Jinan, P.R. China
| | - Hongzhao Qi
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong, P.R. China
| | - Yunjie Hu
- Weifang Medical University, Weifang, P.R. China
| | - Sujie Zhu
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong, P.R. China
| | - Zhenqing Sun
- Department of Gastrointestinal Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong, P.R. China
| | - Zhe Zhang
- Qingdao Municipal Hospital, Qingdao, Shandong, P.R. China
| | - Chuanxiao Wang
- Qingdao Municipal Hospital, Qingdao, Shandong, P.R. China
| | - Caixia Hou
- Qingdao Central Hospital, Qingdao, Shandong, P.R. China
| | - Jie Yu
- Qingdao Central Hospital, Qingdao, Shandong, P.R. China
| | - Lirong Wang
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong, P.R. China
| | - Zhixia Zhou
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong, P.R. China
| | - Peifeng Li
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong, P.R. China
| | - Hua Zhang
- School of Biological Science and Technology, University of Jinan, Jinan, P.R. China.
| | - Kun Wang
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong, P.R. China.
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Williams WV, Brind J, Haynes L, Manhart MD, Klaus H, Lanfranchi A, Migeon G, Gaskins M, Seman EI, Ruppersberger L, Raviele KM. Hormonally Active Contraceptives Part I: Risks Acknowledged and Unacknowledged. LINACRE QUARTERLY 2021; 88:126-148. [PMID: 33897046 PMCID: PMC8033491 DOI: 10.1177/0024363920982709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Hormonal contraceptives have been on the market for over fifty years and, while their formulations have changed, the basic mechanism of action has remained the same. During this time, numerous studies have been performed documenting side effects, some of which appear over time, some within weeks or months, but all can have a serious impact on health and quality of life. An effort was made to perform a series of comprehensive literature surveys to better understand immediate and long-term side effects of these agents. The results of this literature review uncovered a number of potential side effects, some of which are acknowledged and many of which are not noted in the prescribing information for these agents. Among the unacknowledged side effects are: an increased risk of HIV transmission for depot medroxyprogesterone acetate (DMPA), and for combination contraceptives breast cancer, cervical cancer, Crohn's disease, ulcerative colitis, systemic lupus erythematosus, depression, mood disorders and suicides (especially among women twenty-five years of age and younger, in the first six months of use), multiple sclerosis, interstitial cystitis, female sexual dysfunction, osteoporotic bone fractures (especially for progesterone-only contraceptives), and fatty weight gain. Misleading prescribing information regarding cardiovascular and thrombotic risks are also noted. Women seeking birth control have a right to be informed and educated about risk avoidance through the use of effective nonhormonal methods like fertility awareness methods. In one case-that of DMPA-the increased risk of HIV acquisition has been conclusively demonstrated to be both real and unique to this drug. Considering the availability of numerous alternatives, there is no justification for the continued marketing of DMPA to the public. SUMMARY We reviewed the effect of hormonal contraceptives on women's health. A number of potential side effects were noted including increased risks of breast cancer, cervical cancer, inflammatory bowel disease, lupus, multiple sclerosis, cystitis, bone fractures, depression, mood disorders and suicides, fatty weight gain, and female sexual dysfunction. With the long-acting injectable contraceptives there is an increased risk of getting HIV. Misleading prescribing information regarding the risks of heart attacks, strokes and blood clotting problems were also noted. Women seeking birth control have a right to know about how to avoid these risks by using effective hormone-free Fertility Awareness Methods.
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Affiliation(s)
- William V. Williams
- BriaCell Therapeutics Corporation, Berkeley, CA, USA
- University of Pennsylvania, Philadelphia, PA, USA
- Catholic Medical Association, Fort Washington, PA, USA
| | - Joel Brind
- Breast Cancer Prevention Institute, Whitehouse Station, NJ,
USA
| | - Laura Haynes
- International Federation for Therapeutic and Counseling
Choice, General Board Member and USA Country Representative, Tustin,
California, USA
| | | | - Hanna Klaus
- Catholic Medical Association, Fort Washington, PA, USA
- Teen STAR, Tallahassee, FL, USA
| | - Angela Lanfranchi
- Catholic Medical Association, Fort Washington, PA, USA
- Breast Cancer Prevention Institute, Whitehouse Station, NJ,
USA
- Rutgers-Robert Wood Johnson Medical School, New Brunswick,
NJ, USA
| | | | | | - Elvis I. Seman
- Associate Professor of Obstetrics, Gynaecology and
Reproductive Medicine, Flinders
University, Adelaide, South Australia
- Medical Lead in Urogynaecology, Flinders Medical Centre,
Australia
- Senior VMS in Gynaecology, The Queen Elizabeth and Royal
Adelaide Hospitals, South Australia
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Allouch S, Gupta I, Malik S, Al Farsi HF, Vranic S, Al Moustafa AE. Breast Cancer During Pregnancy: A Marked Propensity to Triple-Negative Phenotype. Front Oncol 2021; 10:580345. [PMID: 33425733 PMCID: PMC7786283 DOI: 10.3389/fonc.2020.580345] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 11/20/2020] [Indexed: 12/19/2022] Open
Abstract
Breast and cervical cancers comprise 50% of all cancers during pregnancy. In particular, gestational breast cancer is considered one of the most aggressive types of cancers, which is a rare but fatal disease. However, the incidence of this type of cancer is increasing over the years and its prevalence is expected to rise further as more women delay childbearing. Breast cancer occurring after pregnancy is generally triple negative with specific characterizations of a poorer prognosis and outcome. On the other hand, it has been pointed out that this cancer is associated with a specific group of genes which can be used as precise targets to manage this deadly disease. Indeed, combination therapies consisting of gene-based agents with other cancer therapeutics is presently under consideration. We herein review recent progress in understanding the development of breast cancer during pregnancy and their unique subtype of triple negative which is the hallmark of this type of breast cancer.
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Affiliation(s)
- Soumaya Allouch
- College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Ishita Gupta
- College of Medicine, QU Health, Qatar University, Doha, Qatar.,Biomedical Research Center, Qatar University, Doha, Qatar
| | - Shaza Malik
- College of Medicine, QU Health, Qatar University, Doha, Qatar
| | | | - Semir Vranic
- College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Ala-Eddin Al Moustafa
- College of Medicine, QU Health, Qatar University, Doha, Qatar.,Biomedical Research Center, Qatar University, Doha, Qatar
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Tweaking EMT and MDR dynamics to constrain triple-negative breast cancer invasiveness by EGFR and Wnt/β-catenin signaling regulation. Cell Oncol (Dordr) 2021; 44:405-422. [PMID: 33398673 DOI: 10.1007/s13402-020-00576-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2020] [Indexed: 02/06/2023] Open
Abstract
PURPOSE Due to a lack of effective targeted therapies, patients with metastatic triple-negative breast cancer (TNBC) have poor clinical outcomes. Epithelial to mesenchymal transition (EMT) is known to contribute to cancer progression, invasiveness and multidrug resistance (MDR). There is a strong correlation between various drug efflux mechanisms, cancer stem cells and tumor microenvironments, which in turn is synchronized by complex signaling crosstalk between EMT and MDR. We hypothesize that combining these regulatory connections with targeted combinatorial therapies may be an effective approach to annihilate the progression/metastasis of TNBC. METHODS AlamarBlue assays were used to depict TNBC cell viability, whereas flow cytometry was used to detect apoptotic cell populations, reactive-oxygen species (ROS) levels as well as mitochondrial depolarization. qRT-PCR, Western blotting and confocal microscopy were used to provide molecular-level information of the genes and proteins involved. RESULTS Our initial analyses showed that targeting EGFR by either erlotinib (EGFR inhibitor) or lapatinib (EGFR/HER-2 inhibitor) alone was ineffective against TNBC. Interestingly, we subsequently found that a low dose of lapatinib did act as a substrate rather than as an inhibitor facilitating EMT and MDR, leading to metastasis. Additional gene expression studies indicated that co-targeting the EGFR and Wnt/β-catenin pathways with lapatinib and XAV939 (a tankyrase inhibitor) promoted mesenchymal to epithelial transition (MET). Application of these inhibitors led to a 5.62-fold increase in the epithelial marker E-cadherin and a 3.33-fold decrease in the stemness marker EpCAM, with concomitant 1.5-fold and 3.22-fold reductions in the ABC transporters ABCB1 and ABCG2, respectively. These co-targeting effects resulted in overcoming EMT and MDR, which in turn was highlighted by reduced levels of pEGFR, pAKT, pMAPK, pSTAT-3, pGSK-3β and β-catenin. CONCLUSIONS Our data indicate that the synergistic action of targeting both the EGFR and Wnt/β-catenin signaling pathways in TNBC cells may open up new avenues for combatting this disease.
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Moss JL, Tatalovich Z, Zhu L, Morgan C, Cronin KA. Triple-negative breast cancer incidence in the United States: ecological correlations with area-level sociodemographics, healthcare, and health behaviors. Breast Cancer 2021; 28:82-91. [PMID: 32671723 PMCID: PMC7796916 DOI: 10.1007/s12282-020-01132-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 07/02/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer, more commonly diagnosed among black women than other subgroups. TNBC varies geographically, but little is known about area-level characteristics associated with elevated incidence. METHODS We generated 2011-2013 age-adjusted TNBC incidence rates for state economic areas (SEAs) in 43 states using data from North American Association of Central Cancer Registries. For cases missing data on molecular markers, we imputed TNBC status using cross-marginal proportions. We linked these data to SEA covariates from national sources. Using linear ecological regression, we examined correlates of TNBC incidence rates for the overall population and for age (< 50 years or 50 + years)- or race (white or black)-specific subgroups. RESULTS The mean annual incidence of TNBC across SEAs was 13.7 per 100,000 women (range = 4.5-26.3), with especially high and variable rates among African American women (mean = 20.5, range 0.0-155.1). TNBC incidence was highest in South Atlantic and East South Central Census Divisions and lowest in Mountain Division. Overall TNBC incidence was associated with SEA sociodemographics (e.g., percent of females age 45 + who are non-Hispanic black: coefficient estimate [est.] = 1.62), healthcare characteristics (e.g., percent of population without health insurance: est. = - 0.52), and health behaviors (e.g., prevalence of obesity among women: est. = 0.72) (all p < 0.05). Other variables related to TNBC incidence included density of obstetrician/gynecologists and prevalence of smoking. CONCLUSION TNBC incidence varied across SEAs in the U.S., particularly for African American women. Identifying areas with elevated TNBC incidence can facilitate research and interventions on area- and individual-level correlates of TNBC.
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Affiliation(s)
- Jennifer L Moss
- Cancer Prevention Fellowship Program, National Cancer Institute, Bethesda, MD, 20892, USA.
- Department of Family and Community Medicine, Penn State College of Medicine, 134 Sipe Ave., #205, MC HS72, PO Box 850, Hershey, PA, 17033, USA.
| | - Zaria Tatalovich
- Surveillance Research Program, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Li Zhu
- Surveillance Research Program, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Camille Morgan
- Center for Global Health, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Kathleen A Cronin
- Surveillance Research Program, National Cancer Institute, Bethesda, MD, 20892, USA
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Abstract
ABSTRACT Obesity is an increasingly prevalent state of energy imbalance that contributes to breast cancer risk and outcomes. The effects of obesity differ by breast cancer subtype and menopause. While most studies have focused on postmenopausal hormone receptor-positive disease, less is known about the relationship between obesity and triple-negative breast cancer (TNBC). Here we will review the observations linking obesity to TNBC, the socioeconomic disparities that contribute to obesity-related TNBC, and putative biologic mechanisms. Finally, we will consider the impact of obesity on surgical and medical treatment of TNBC and novel strategies to improve energy balance after cancer diagnosis.
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Ben-Zion Berliner M, Yerushalmi R, Lavie I, Benouaich-Amiel A, Tsoref D, Hendler D, Goldvaser H, Sarfaty M, Rotem O, Ulitsky O, Siegal T, Neiman V, Yust-Katz S. Central nervous system metastases in breast cancer: the impact of age on patterns of development and outcome. Breast Cancer Res Treat 2020; 185:423-432. [PMID: 33037977 DOI: 10.1007/s10549-020-05959-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 09/28/2020] [Indexed: 12/31/2022]
Abstract
PURPOSE The purpose of this study is to explore differences in the pattern and outcome of central nervous system (CNS) involvement in breast cancer by age at diagnosis. METHODS A retrospective database of a tertiary cancer center yielded 174 consecutive patients with breast cancer who were diagnosed with CNS metastases in 2006-2019. Data on histopathology, characteristics of CNS involvement, treatments, and survival (at three time points during the disease course) were compared between patients aged ≤ 45 and > 45 years. Pearson Chi-square or Fisher exact test and Kaplan-Meier survival curves with log-rank test were used for statistical analyses. RESULTS Study population was divided according to age at diagnosis of breast cancer. 65 patients were ≤ 45 years old and 109 patients > 45 years old. The younger group was characterized by longer median overall survival (117.1 months vs 88 months, p = 0.017) and longer interval between breast cancer diagnosis to development of CNS metastases (97.4 months vs 75.9 months, p = 0.026). Median survival after development of CNS disease was not significantly different (18.7 months vs 11.1 months, p = 0.341), although it was significantly longer in younger patients within the subgroup of patients with triple-negative disease (22.5 vs 7.9 months, p = 0.033). There were no between-group differences in number, location, and clinical presentation of CNS metastases or in systemic and CNS-directed treatment approaches. CONCLUSION While the presentation of CNS involvement was similar between the different age groups, younger patients had significantly longer CNS-free interval and longer overall survival, and for the subgroups of triple-negative patients, younger age at breast cancer diagnosis was associated with longer survival after diagnosis of CNS disease.
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Affiliation(s)
- Matan Ben-Zion Berliner
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel.
| | - Rinat Yerushalmi
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv, Israel
| | - Inbar Lavie
- Sackler Faculty of Medicine, Tel Aviv, Israel
| | | | - Daliah Tsoref
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv, Israel
| | - Daniel Hendler
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel
| | - Hadar Goldvaser
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel
| | - Michal Sarfaty
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv, Israel
| | - Ofer Rotem
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel
| | - Olga Ulitsky
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel
| | - Tali Siegal
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel
| | - Victoria Neiman
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel
| | - Shlomit Yust-Katz
- Davidoff Cancer Center, Rabin Medical Center-Beilinson Hospital, 4941492, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv, Israel
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Zevallos A, Bravo L, Bretel D, Paez K, Infante U, Cárdenas N, Alvarado H, Posada AM, Pinto JA. The hispanic landscape of triple negative breast cancer. Crit Rev Oncol Hematol 2020; 155:103094. [PMID: 33027724 DOI: 10.1016/j.critrevonc.2020.103094] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 10/23/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is a heterogeneous and complex disease characterized by the absence of immunohistochemical expression of estrogen receptor, progesterone receptor and HER2. These breast tumors present an aggressive biology and offer few opportunities to be treated with targeted therapy resulting in bad disease outcomes. The epidemiology of TNBC is intriguing where the understanding of its biology has progressed quickly. One of the peculiarities of this type of cancer is a high prevalence in Afrodescendants and Hispanic patients compared to Caucasian women. In this review we describe some features of TNBC, focusing in the Hispanic population, such as epidemiological, clinicopathological features and molecular features and the correlation between TNBC prevalence and the human development index.
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Affiliation(s)
- Alejandra Zevallos
- Escuela de Medicina Humana, Universidad Privada San Juan Bautista, Lima, Peru
| | - Leny Bravo
- Escuela de Medicina Humana, Universidad Privada San Juan Bautista, Lima, Peru
| | - Denisse Bretel
- Grupo de Estudios Clínicos Oncológicos Peruano, GECOPERU, Lima, Peru
| | - Kevin Paez
- Facultad de Ciencias Biológicas, Universidad Nacional San Luis Gonzaga de Ica, Ica, Peru
| | - Ulises Infante
- Facultad de Ciencias Biológicas, Universidad Nacional San Luis Gonzaga de Ica, Ica, Peru
| | - Nadezhda Cárdenas
- Escuela de Medicina Humana-Filial Ica, Universidad Privada San Juan Bautista, Ica, Peru
| | - Hober Alvarado
- Facultad de Ciencias Biológicas, Universidad Nacional San Luis Gonzaga de Ica, Ica, Peru
| | | | - Joseph A Pinto
- Unidad de Investigación Básica y Traslacional, Oncosalud - AUNA, Lima, Peru.
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Subtype-specific risk factors for postmenopausal breast cancer: findings from the PLCO trial. Clin Transl Oncol 2020; 22:1885-1891. [DOI: 10.1007/s12094-020-02329-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 02/25/2020] [Indexed: 10/24/2022]
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Bhurosy T, Niu Z, Heckman CJ. Breastfeeding is Possible: A Systematic Review on the Feasibility and Challenges of Breastfeeding Among Breast Cancer Survivors of Reproductive Age. Ann Surg Oncol 2020; 28:3723-3735. [PMID: 32915334 DOI: 10.1245/s10434-020-09094-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/24/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND Breastfeeding is the biologically normative mode of feeding human infants, and reduces the risk of breast cancer for mothers. This systematic review assesses engagement in breastfeeding and the factors associated with breastfeeding among breast cancer survivors. METHODS An online literature search was performed using the PubMed, Embase, CINAHL, PsychInfo, and Web of Science databases. Inclusion criteria were original research articles written in English, published in peer-reviewed journals from 1 January 1990 to 25 November 2019, and included data on breast cancer survivors who attempted breastfeeding. RESULTS Thirteen studies were included in the systematic review. Between 7.7 and 90.9% of women attempted breastfeeding. Breastfeeding among participants varied from a few weeks to approximately 2 years. Common factors leading to breastfeeding were use of the contralateral breast, support from others, lactation counseling and advice from an International Board-Certified Lactation Consultant, being motivated to breastfeed, frequent feedings, and use of galactagogues. Common barriers were medical counseling against breastfeeding, insufficient milk production, lack of support, refusal of the infant to breastfeed from the treated breast, and being tired from relying on one breast. CONCLUSIONS Breastfeeding from the unaffected breast is feasible for some breast cancer survivors. Successful breastfeeding may require multilevel support and expert advice.
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Affiliation(s)
- Trishnee Bhurosy
- Division of Population Science, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA.
| | - Zhaomeng Niu
- Division of Population Science, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Carolyn J Heckman
- Division of Population Science, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
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De-la-Cruz-Ku G, Luyo M, Morante Z, Enriquez D, Möller MG, Chambergo-Michilot D, Flores L, Luque R, Saavedra A, Eyzaguirre-Sandoval ME, Luján-Peche MG, Noel N, Calderon H, Razuri C, Fuentes HA, Cotrina JM, Neciosup SP, Araujo J, Lema A, Pinto J, Gomez HL, Valcarcel B. Triple-negative breast cancer in Peru: 2000 patients and 15 years of experience. PLoS One 2020; 15:e0237811. [PMID: 32833983 PMCID: PMC7444821 DOI: 10.1371/journal.pone.0237811] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 08/02/2020] [Indexed: 12/24/2022] Open
Abstract
Background Epidemiological studies commonly identify the clinical characteristics and survival outcomes of patients with breast cancer at five years. Our study aims to describe the sociodemographic, clinicopathological characteristics and determine the long-term event-free survival (EFS) and overall survival (OS) of a Peruvian population with triple-negative breast cancer. Methods We reviewed the medical records of new cases treated at a single institution in the period 2000–2014. The survival analysis included patients with stages I-IV. Survival estimates at 10 years were calculated with the Kaplan-Meier method and compared with the Log-rank test. We further used multivariate Cox regression analysis to calculate prognostic factors of recurrence and mortality. Results Among the 2007 patients included, the median age at diagnosis was 49 years (19–95 years). Most patients presented histologic grade III (68.7%), tumor stage II (34.2%), and III (51.0%) at diagnosis. Local and distant relapse was present in 31.9 and 51.4% of the patients, respectively. The most frequent sites of metastasis were the lungs (14.5%), followed by bone (9.7%), brain (9.6%), and liver (7.9%). The median follow-up was 153 months. At 3, 5, and 10 years, the EFS of the population was 55%, 49%, and 41%, respectively, while the OS was 64%, 56%, and 47%, respectively. Moreover, an N3 lymph node status was the most important prognostic factor for both disease relapse (HR: 2.54, 95% CI: 2.05–3.15) and mortality (HR: 2.51, 95% CI: 2.01–3.14) at ten years. An older age and higher T staging were associated with a worse OS, while patients who received radiotherapy and adjuvant chemotherapy had better survival rates. Conclusion The sociodemographic features of Peruvian patients with TNBC are similar to those of other populations. However, our population was diagnosed at more advanced clinical stages, and thus, EFS and OS were lower than international reports while prognostic factors were similar to previous studies.
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Affiliation(s)
| | | | - Zaida Morante
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | | | - Mecker G. Möller
- Division of Surgical Oncology, University of Miami Miller School of Medicine, Jackson Memorial Hospital/Sylvester Comprehensive Cancer Center, Miami, FL, United States of America
| | - Diego Chambergo-Michilot
- School of Medicine, Universidad Científica del Sur (UCSUR), Lima, Peru
- Tau-RELAPED Group, Trujillo, Peru
| | - Lucero Flores
- School of Medicine, Universidad Científica del Sur (UCSUR), Lima, Peru
| | - Renato Luque
- School of Medicine, Universidad Científica del Sur (UCSUR), Lima, Peru
- Sociedad Científica de Estudiantes de Medicina Humana (SCIEM UCSUR), Lima, Peru
| | - Antonella Saavedra
- School of Medicine, Universidad Científica del Sur (UCSUR), Lima, Peru
- Sociedad Científica de Estudiantes de Medicina Humana (SCIEM UCSUR), Lima, Peru
| | - Miguel E. Eyzaguirre-Sandoval
- School of Medicine, Universidad Científica del Sur (UCSUR), Lima, Peru
- Sociedad Científica de Estudiantes de Medicina Humana (SCIEM UCSUR), Lima, Peru
| | - María G. Luján-Peche
- School of Medicine, Universidad Científica del Sur (UCSUR), Lima, Peru
- Sociedad Científica de Estudiantes de Medicina Humana (SCIEM UCSUR), Lima, Peru
| | - Naysha Noel
- School of Medicine, Universidad Científica del Sur (UCSUR), Lima, Peru
| | - Hafid Calderon
- School of Medicine, Universidad Científica del Sur (UCSUR), Lima, Peru
- Sociedad Científica de Estudiantes de Medicina Humana (SCIEM UCSUR), Lima, Peru
| | | | | | | | | | - Jhajaira Araujo
- Unidad de Investigación Básica y Translacional, Oncosalud-AUNA, Lima, Peru
| | - Alexandra Lema
- Health Sciences Faculty, Universidad de Cuenca, Cuenca, Ecuador
| | - Joseph Pinto
- Unidad de Investigación Básica y Translacional, Oncosalud-AUNA, Lima, Peru
| | - Henry L. Gomez
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Bryan Valcarcel
- Milken Institute School of Public Health, The George Washington University, Washington, DC, United States of America
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Attini R, Cabiddu G, Montersino B, Gammaro L, Gernone G, Moroni G, Santoro D, Spotti D, Masturzo B, Gazzani IB, Menato G, Donvito V, Paoletti AM, Piccoli GB. Contraception in chronic kidney disease: a best practice position statement by the Kidney and Pregnancy Group of the Italian Society of Nephrology. J Nephrol 2020; 33:1343-1359. [PMID: 32166655 PMCID: PMC7701165 DOI: 10.1007/s40620-020-00717-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 02/25/2020] [Indexed: 01/09/2023]
Abstract
Even though fertility is reduced, conception and delivery are possible in all stages of CKD. While successful planned pregnancies are increasing, an unwanted pregnancy may have long-lasting deleterious effects, hence the importance of birth control, an issue often disregarded in clinical practice. The evidence summarized in this position statement is mainly derived from the overall population, or other patient categories, in the lack of guidelines specifically addressed to CKD. Oestroprogestagents can be used in early, non-proteinuric CKD, excluding SLE and immunologic disorders, at high risk of thromboembolism and hypertension. Conversely, progestin only is generally safe and its main side effect is intramestrual spotting. Non-medicated intrauterine devices are a good alternative; their use needs to be carefully evaluated in patients at a high risk of pelvic infection, even though the degree of risk remains controversial. Barrier methods, relatively efficacious when correctly used, have few risks, and condoms are the only contraceptives that protect against sexually transmitted diseases. Surgical sterilization is rarely used also because of the risks surgery involves; it is not definitely contraindicated, and may be considered in selected cases. Emergency contraception with high-dose progestins or intrauterine devices is not contraindicated but should be avoided whenever possible, even if far preferable to abortion. Surgical abortion is invasive, but experience with medical abortion in CKD is still limited, especially in the late stages of the disease. In summary, personalized contraception is feasible, safe and should be offered to all CKD women of childbearing age who do not want to get pregnant.
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Affiliation(s)
- Rossella Attini
- Department of Obstetrics and Gynecology, Città della Salute e della Scienza, Ospedale Sant'Anna, Turin, Italy
| | | | - Benedetta Montersino
- Department of Obstetrics and Gynecology, Città della Salute e della Scienza, Ospedale Sant'Anna, Turin, Italy
| | - Linda Gammaro
- Nephrology Ospedale Fracastoro San Bonifacio, San Bonifacio, Italy
| | | | - Gabriella Moroni
- Nephrology, Fondazione Ca' Granda Ospedale Maggiore, Milan, Italy
| | - Domenico Santoro
- Nephrology and Dialysis, Azienda Ospedaliera Universitaria "G. Martino", Messina, Italy
| | - Donatella Spotti
- Nephrology and Dialysis, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Bianca Masturzo
- Department of Obstetrics and Gynecology, Città della Salute e della Scienza, Ospedale Sant'Anna, Turin, Italy
| | - Isabella Bianca Gazzani
- Department of Obstetrics and Gynecology, Città della Salute e della Scienza, Ospedale Sant'Anna, Turin, Italy
| | - Guido Menato
- Department of Obstetrics and Gynecology, Città della Salute e della Scienza, Ospedale Sant'Anna, Turin, Italy
| | - Valentina Donvito
- Department of Internal Medicine, Ospedale Sant'Anna, Città della Salute e della Scienza, Turin, Italy
| | - Anna Maria Paoletti
- Department of Surgical Sciences, Obstetrics and Gynecology, University Hospital of Cagliari, Cagliari, Italy
| | - Giorgina Barbara Piccoli
- Department of Clinical and Biological Sciences, Università di Torino, Turin, Italy. .,Nephrology and Dialysis, Centre Hospitalier Le Mans, Le Mans, France.
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Rojas-Lima E, Gamboa-Loira B, Cebrián ME, Rothenberg SJ, López-Carrillo L. A cumulative index of exposure to endogenous estrogens and breast cancer by molecular subtypes in northern Mexican women. Breast Cancer Res Treat 2020; 180:791-800. [PMID: 32086656 DOI: 10.1007/s10549-020-05562-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/31/2020] [Indexed: 12/21/2022]
Abstract
PURPOSE To evaluate breast cancer (BC) molecular subtypes association with reproductive characteristics and an index of cumulative exposure to endogenous estrogens (EEI) in Mexican women. METHODS We performed a study of incident cases and population controls in northern Mexico. We included BC cases with tumor molecular classification in their medical records (n = 509), and classified them as HR+/HER2- (ER+ and/or PR+ and HER2-) (n = 289), HER2+ (HR+ or HR-) (n = 117) or triple negative (TN) (n = 103). We matched controls (n = 1030) by age and place of residence with index cases. Women were interviewed about their reproductive history, from which the EEI was developed. We used logistic regression models to estimate BC molecular subtypes associations with reproductive characteristics and EEI. RESULTS The EEI was higher in all subtypes compared to controls (Median HR+/HER2- 27.25, HER2+ 26.8, TN 24.2 vs. controls 22.8 years, p < 0.05), and was associated with HR+/HER2- (ORT3 vs. T1 = 2.58, 95% CI 1.77-3.55, p-trend < 0.001) and HER2+ (ORT3 vs. T1 = 4.17, 95% CI 2.15-8.08, p-trend < 0.001) BC. Additionally, HR+/HER2- tumors were positively associated with age at first pregnancy and age at menopause, and negatively with age at menarche, parity and breastfeeding. The HER2+ subtype was associated in the same direction as HR+/HER2- tumors with all the reproductive characteristics except for age at menarche. TN tumors were negatively associated with parity and breastfeeding. CONCLUSION Endogenous estrogens exposure throughout Mexican women reproductive life may contribute to the development of all but TN BC, however, these findings should be confirmed in other Hispanic populations.
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Affiliation(s)
- Elodia Rojas-Lima
- Instituto Nacional de Salud Pública, Av. Universidad 655, Col. Santa María Ahuacatitlán, C.P. 62100, Cuernavaca, Morelos, Mexico
| | - Brenda Gamboa-Loira
- Instituto Nacional de Salud Pública, Av. Universidad 655, Col. Santa María Ahuacatitlán, C.P. 62100, Cuernavaca, Morelos, Mexico
| | - Mariano E Cebrián
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, C.P. 07360, Mexico City, Mexico
| | - Stephen J Rothenberg
- Instituto Nacional de Salud Pública, Av. Universidad 655, Col. Santa María Ahuacatitlán, C.P. 62100, Cuernavaca, Morelos, Mexico
| | - Lizbeth López-Carrillo
- Instituto Nacional de Salud Pública, Av. Universidad 655, Col. Santa María Ahuacatitlán, C.P. 62100, Cuernavaca, Morelos, Mexico.
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Ji LW, Jing CX, Zhuang SL, Pan WC, Hu XP. Effect of age at first use of oral contraceptives on breast cancer risk: An updated meta-analysis. Medicine (Baltimore) 2019; 98:e15719. [PMID: 31490359 PMCID: PMC6738995 DOI: 10.1097/md.0000000000015719] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND We evaluated the relationship between the age at first use of oral contraceptives (OC) and breast cancer (BC) risk. METHODS We searched PubMed, Embase, and related reviews published through June 28, 2018, and used summary relative risk (RR) and 95% confidence intervals (CIs) to evaluate the cancer risks, and fixed-effects dose-response meta-analysis to assess potential linear and non-linear dose-response relationships. RESULTS We included 10 studies, with 8585 BC cases among 686,305 participants. The pooled RR for BC was 1.24 (95% CI: 1.10-1.41), with moderate heterogeneities (I = 66.5%, P < .001). No significant publication bias was found (P = .584 for Begg test, P = .597 for Egger test). A linear dose-response relationship between the age at first OC use and BC risk was detected (P = .518 for non-linearity). Subgroup analyses were restricted to studies done by BC subtypes, region, sample size, follow-up time and study quality. Inconsistent consequences with no statistical significance were explored when limited to studies from Western countries, study quality <7, sample size <10,000, follow-up time <5 years, and BC subtypes defined by estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor-2 (HER-2) expression status in tumor tissue. Sensitivity analyses indicated that our results were stable and reliable after removing each study in turn and omitting studies of adjusted unreported variables. CONCLUSION A significant linear relationship between the age at first OC use and BC risk was confirmed. No further consistent differences are noted in multiple aspects of BC subtypes defined by progesterone or ER status.
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Affiliation(s)
- Li-Wei Ji
- Department of Obstetrics and Gynecology
| | | | | | | | - Xing-Po Hu
- Department of Endocrinology, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China
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Nur U, El Reda D, Hashim D, Weiderpass E. A prospective investigation of oral contraceptive use and breast cancer mortality: findings from the Swedish women's lifestyle and health cohort. BMC Cancer 2019; 19:807. [PMID: 31412822 PMCID: PMC6694621 DOI: 10.1186/s12885-019-5985-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 07/26/2019] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The association between oral contraceptive (OC) use and long-term mortality remains uncertain and previous studies have reported conflicting findings. We aim to assess the long-term impact of OC use on all-cause and cancer-specific mortality. METHODS Out of 49,259 participants, we analysed data on 2120 (4.3%) women diagnosed with first primary breast cancer between 1993 and 2012, in the Swedish Women's Lifestyle and Health Study. Kaplan-Meier plots were used to graph the hazard of mortality in association with oral contraceptives use, stage of disease and hormone receptors status at diagnosis. Cox proportional hazard model were used to estimate hazard ratios (HR) between OC use and all-cause mortality. The same association was studied for breast cancer-specific mortality by modelling the log cumulative mortality risk, adjusting for clinical stage at diagnosis, hormone receptor status, body mass index and smoking. RESULTS Among 2120 women with breast cancer, 1268 (84%) reported ever use of OC and 254 died within 10 years of diagnosis. The risk of death for OC ever-users relative to never-users was: HR = 1.13 (95% CI: 0.66-1.94) for all-cause mortality and HR = 1.29 (95% CI: 0.53-3.18) for breast cancer-specific mortality. A high percentage of women (42.9%) were diagnosed at early stage disease (stage I). CONCLUSIONS Among women with primary breast cancer, OC ever-users compared to never- users did not have a higher all-cause or breast cancer specific-mortality, after the adjustment of risk factors.
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Affiliation(s)
- Ula Nur
- Department of Public Health, College of Health Sciences, QU Health, Qatar University, P.O. Box, 2713, Doha, Qatar
| | - Darline El Reda
- Michigan Medical Advantage Group, Ann Arbor, MI USA
- College of Human Medicine, Division of Public Health, Michigan State University, East Lansing, MI USA
| | - Dana Hashim
- Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
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Lorona NC, Cook LS, Tang MTC, Hill DA, Wiggins CL, Li CI. Recent Use of Oral Contraceptives and Risk of Luminal B, Triple-Negative, and HER2-Overexpressing Breast Cancer. HORMONES & CANCER 2019; 10:71-76. [PMID: 30989580 PMCID: PMC6550997 DOI: 10.1007/s12672-019-00362-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/19/2019] [Accepted: 03/28/2019] [Indexed: 12/13/2022]
Abstract
Oral contraceptive use is a well-established risk factor for breast cancer and is common among reproductive-aged women in the USA. Its relationship with less common, more aggressive, molecular subtypes is less clear. A population-based case-case analysis was conducted comparing three less common molecular subtypes to luminal A breast cancer among 1701 premenopausal cases aged 21-49 diagnosed with a first primary invasive breast cancer between 2004 and 2015. Medical record reviews and structured interviewer-administered questionnaires were used to collect data on oral contraceptive use. Multinomial logistic regression was used to estimate odds ratios (OR) and corresponding 95% confidence intervals (95% CI) for recency of oral contraceptive use for each subtype of breast cancer. Current use of oral contraceptives and use within 5 years before diagnosis was associated with lower odds of H2E tumors compared with luminal A tumors [OR = 0.5, 95% CI: 0.3, 0.9 and OR = 0.5, 95% CI: 0.4, 0.8, respectively] with increasing duration associated with decreasing odds (p for trend < 0.05). Oral contraceptive use was not associated with risks of TN or luminal B breast cancer. Oral contraceptive use may be more strongly positively associated with risks of luminal A, luminal B, and TN breast cancer than with risk of H2E tumors. These findings contribute to the etiological understanding of different molecular subtypes of breast cancer.
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Affiliation(s)
- Nicole C Lorona
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., M4-C308, Seattle, WA, 98109, USA.
- Department of Epidemiology, University of Washington, Seattle, WA, USA.
| | - Linda S Cook
- Department of Internal Medicine, University of New Mexico and the University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, USA
| | - Mei-Tzu C Tang
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., M4-C308, Seattle, WA, 98109, USA
| | - Deirdre A Hill
- Department of Internal Medicine, University of New Mexico and the University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, USA
| | - Charles L Wiggins
- Department of Internal Medicine, University of New Mexico and the University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, USA
| | - Christopher I Li
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., M4-C308, Seattle, WA, 98109, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
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Teslow EA, Mitrea C, Bao B, Mohammad RM, Polin LA, Dyson G, Purrington KS, Bollig‐Fischer A. Obesity-induced MBD2_v2 expression promotes tumor-initiating triple-negative breast cancer stem cells. Mol Oncol 2019; 13:894-908. [PMID: 30636104 PMCID: PMC6441886 DOI: 10.1002/1878-0261.12444] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/05/2018] [Accepted: 12/21/2018] [Indexed: 12/26/2022] Open
Abstract
Obesity is a risk factor for triple-negative breast cancer (TNBC) incidence and poor outcomes, but the underlying molecular biology remains unknown. We previously identified in TNBC cell cultures that expression of epigenetic reader methyl-CpG-binding domain protein 2 (MBD2), specifically the alternative mRNA splicing variant MBD variant 2 (MBD2_v2), is dependent on reactive oxygen species (ROS) and is crucial for maintenance and expansion of cancer stem cell-like cells (CSCs). Because obesity is coupled with inflammation and ROS, we hypothesized that obesity can fuel an increase in MBD2_v2 expression to promote the tumor-initiating CSC phenotype in TNBC cells in vivo. Analysis of TNBC patient datasets revealed associations between high tumor MBD2_v2 expression and high relapse rates and high body mass index (BMI). Stable gene knockdown/overexpression methods were applied to TNBC cell lines to elucidate that MBD2_v2 expression is governed by ROS-dependent expression of serine- and arginine-rich splicing factor 2 (SRSF2). We employed a diet-induced obesity (DIO) mouse model that mimics human obesity to investigate whether obesity causes increased MBD2_v2 expression and increased tumor initiation capacity in inoculated TNBC cell lines. MBD2_v2 and SRSF2 levels were increased in TNBC cell line-derived tumors that formed more frequently in DIO mice relative to tumors in lean control mice. Stable MBD2_v2 overexpression increased the CSC fraction in culture and increased TNBC cell line tumor initiation capacity in vivo. SRSF2 knockdown resulted in decreased MBD2_v2 expression, decreased CSCs in TNBC cell cultures, and hindered tumor formation in vivo. This report describes evidence to support the conclusion that MBD2_v2 expression is induced by obesity and drives TNBC cell tumorigenicity, and thus provides molecular insights into support of the epidemiological evidence that obesity is a risk factor for TNBC. The majority of TNBC patients are obese and rising obesity rates threaten to further increase the burden of obesity-linked cancers, which reinforces the relevance of this report.
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Affiliation(s)
- Emily A. Teslow
- Department of OncologyBarbara Ann Karmanos Cancer InstituteWayne State University School of MedicineDetroitMIUSA
| | - Cristina Mitrea
- Department of Computer ScienceWayne State UniversityDetroitMIUSA
| | - Bin Bao
- Department of OncologyBarbara Ann Karmanos Cancer InstituteWayne State University School of MedicineDetroitMIUSA
| | - Ramzi M. Mohammad
- Department of OncologyBarbara Ann Karmanos Cancer InstituteWayne State University School of MedicineDetroitMIUSA
| | - Lisa A. Polin
- Department of OncologyBarbara Ann Karmanos Cancer InstituteWayne State University School of MedicineDetroitMIUSA
| | - Greg Dyson
- Department of OncologyBarbara Ann Karmanos Cancer InstituteWayne State University School of MedicineDetroitMIUSA
| | - Kristen S. Purrington
- Department of OncologyBarbara Ann Karmanos Cancer InstituteWayne State University School of MedicineDetroitMIUSA
| | - Aliccia Bollig‐Fischer
- Department of OncologyBarbara Ann Karmanos Cancer InstituteWayne State University School of MedicineDetroitMIUSA
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Caramelo O, Silva C, Caramelo F, Frutuoso C, Almeida-Santos T. The effect of neoadjuvant platinum-based chemotherapy in BRCA mutated triple negative breast cancers -systematic review and meta-analysis. Hered Cancer Clin Pract 2019; 17:11. [PMID: 30962858 PMCID: PMC6434625 DOI: 10.1186/s13053-019-0111-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/14/2019] [Indexed: 12/17/2022] Open
Abstract
Background Triple negative breast cancers (TNBC) are associated with an aggressive clinical course, earlier recurrence and short survival. BRCA – mutated tumours represent up to 25% of all TNBC. BRCA status is being studied as a predictive biomarker of response to platinum agents. However, the predictive role of BRCA status is still uncertain in this setting. Since TNBC is a very heterogeneous group of diseases, it is important to identify subsets of TNBC patients that may benefit from platinum-based therapy. This study aims to establish if the presence of a germline BRCA mutation in women with TNBC improves the pathologic complete response (pCR) after neoadjuvant chemotherapy with platinum compounds. Methods An extensive literature search was performed in MEDLINE, EMBASE and LILACS databases, WHO (WHO International Clinical Trials Registry Platform) and the Cochrane Controlled Trials Register Database, for online trial registries and conference proceedings. The measurement of pCR was assessed by pathology review of breast specimen and lymph nodes. Results The overall OR was computed using random effects models. Seven studies were included, comprising a total of 808 TNBC patients, among which 159 were BRCA mutated. Among mutated TNBC patients, 93 (93/159; 58.4%) achieved pCR, while 410 wildtype patients (410/808; 50.7%) showed pCR (OR 1.459 CI 95% [0.953–2.34] p = 0.082) although this result did not reach statistical significance. Conclusions This meta-analysis shows that the addition of platinum to chemotherapy regimens in the neoadjuvant setting increases pCR rate in BRCA – mutated as compared to wild-type TNBC patients. However, this trend did not achieve statistical significance. Trial registration CRD42018092341
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Affiliation(s)
- Olga Caramelo
- 1Gynecology Department, Coimbra Hospital and University Centre (CHUC), EPE, Praceta Prof. Mota Pinto, 3000-075 Coimbra, Portugal
| | - Cristina Silva
- 2Faculty of Pharmacy of the University of Coimbra, Rua Filipe Simões n° 33, 3000-186 Coimbra, Portugal
| | - Francisco Caramelo
- 3Laboratory of Biostatistics and Medical Informatics, iCBR - Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
| | - Cristina Frutuoso
- 1Gynecology Department, Coimbra Hospital and University Centre (CHUC), EPE, Praceta Prof. Mota Pinto, 3000-075 Coimbra, Portugal
| | - Teresa Almeida-Santos
- 4Centre for Fertility Preservation, Human Reproduction Department, Coimbra Hospital and University Centre (CHUC), EPE, Praceta Prof. Mota Pinto, 3000-075 Coimbra, Portugal.,5Faculty of Medicine of the University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548 Coimbra, Portugal
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Weymuller V, Caille A, Diguisto C, Chas M, Jourdan ML, Arbion F, Body G, Ouldamer L. [Influence of hormonal factors on triple-negative breast cancer prognosis]. ACTA ACUST UNITED AC 2019; 47:471-477. [PMID: 30872189 DOI: 10.1016/j.gofs.2019.03.006] [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: 07/02/2017] [Indexed: 10/27/2022]
Abstract
OBJECTIVES Triples negative breast cancer defined by the absence of expression of the hormone receptors and HER2 protein, are considered as aggressive tumours with bad outcome in comparison to the hormone sensitive tumours. The aim of the study was to evaluate the link between hormone factors and prognostic factors of triple-negative tumours. METHODS All patients managed for a triple-negative breast cancer between January, 2009 and December, 2013 were included. For every patient, collected data were the clinical, histological, adjuvant or neoadjuvant treatments, as well as survival data. RESULTS AND CONCLUSION During the study period, 1682 patients were operated for a breast cancer, among which 1444 presented at least an invasive tumour. One hundred and fifty-five women (10.7%) had a negative triple tumour. The average age of diagnosis was 56.4years, is significantly younger than for patients with other types of tumours, P=0.0001. For women with a triple-negative tumour, the parity was the only hormonal factor identified as an independent factor for axillary lymph node involvement (OR=1.53; 95% CI [1.10-2.25] P=0.02) and previous hormone replacement therapy as an independent factor of locoregional recurrence (OR=0.13 [0.005-0.64] P=0.001). We did not find any hormonal factor predictive of distant metastasis. We did not find any difference in overall survival according to the parity (P=0.72), the Body mass index (P=0.62) or the use of HRT (P=0.49). CONCLUSION Hormone factors seem to have a prognostic implication for triple-negative despite the absence of hormone receptors expression.
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Affiliation(s)
- V Weymuller
- Département de gynécologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France; Faculté de médecine François-Rabelais, 10, boulevard Tonnellé, 37044 Tours, France
| | - A Caille
- Inserm, SPHERE U1246, CIC 1415, université de Tours, CHRU, 37044 Tours, France
| | - C Diguisto
- Département de gynécologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France; Faculté de médecine François-Rabelais, 10, boulevard Tonnellé, 37044 Tours, France
| | - M Chas
- Département de gynécologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France; Faculté de médecine François-Rabelais, 10, boulevard Tonnellé, 37044 Tours, France
| | - M L Jourdan
- Unité Inserm 1069, 10, boulevard Tonnellé, 37044 Tours, France
| | - F Arbion
- Département de pathologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
| | - G Body
- Département de gynécologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France; Faculté de médecine François-Rabelais, 10, boulevard Tonnellé, 37044 Tours, France; Unité Inserm 1069, 10, boulevard Tonnellé, 37044 Tours, France
| | - L Ouldamer
- Département de gynécologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France; Faculté de médecine François-Rabelais, 10, boulevard Tonnellé, 37044 Tours, France; Unité Inserm 1069, 10, boulevard Tonnellé, 37044 Tours, France.
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Williams WV, Mitchell LA, Carlson SK, Raviele KM. Association of Combined Estrogen-Progestogen and Progestogen-Only Contraceptives with the Development of Cancer. LINACRE QUARTERLY 2019; 85:412-452. [PMID: 32431377 DOI: 10.1177/0024363918811637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Combined estrogen-progestogen contraceptives (oral contraceptives or OCs) and progestogen-only contraceptives (POCs) are synthetic steroids that bind to steroid hormone receptors, which are widespread throughout the body. They have a profound effect on cellular physiology. Combined OCs have been classified by the International Agency for Research on Cancer (IARC) as Group 1 carcinogens, but their findings have not been updated recently. In order to update the information and better understand the impact that OCs and POCs have on the risk of development of cancers, a comprehensive literature search was undertaken, focusing on more recently published papers. In agreement with the IARC, the recent literature confirms an increased risk of breast cancer and cervical cancer with the use of OCs. The recent literature also confirms the IARC conclusion that OCs decrease the risk of ovarian and endometrial cancers. However, there is little support from recent studies for the IARC conclusion that OCs decrease the risk of colorectal cancer or increase the risk of liver cancer. For liver cancer, this may be due to the recent studies having been performed in areas where hepatitis is endemic. In one large observational study, POCs also appear to increase the overall risk of developing cancer. OCs and POCs appear to increase the overall risk of cancer when carefully performed studies with the least intrinsic bias are considered. Summary OCs have been classified as cancer-causing agents, especially leading to increases in breast cancer and cervical cancer. A review of the recent scientific literature was performed to see whether this still appears to be the case. The recent literature supports the cancer-causing role of OCs especially for breast cancer and cervical cancer. Studies also indicate that progesterone-only contraceptives (such as implants and vaginal rings) also can cause cancer. This is especially true for breast cancer and cervical cancer.
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Affiliation(s)
- William V Williams
- BriaCell Therapeutics Corporation, West Vancouver, British Columbia, Canada.,University of Pennsylvania, Philadelphia, PA, USA
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50
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Abstract
Since the 1960s, hormonal contraceptives have become the most commonly used method of pregnancy prevention in the United States and the world. Oral contraceptives are used by a large percentage of women, including Christian women. There are known health risks to women demonstrated in research published since Pope Paul VI's prophetic encyclical Humanae vitae in 1968. These risks include venous thrombosis, cardiovascular risks, and an increased risk of cancer. These risks are medically recognized with continued scientific debate on the degree. The risks are significantly increased with preexisting conditions and in certain demographic groups. Discussing known and potential treatment risks is a standard that is both accepted by the medical community and is increasingly expected by patients. This discussion can be accomplished by the mechanism and principle of informed consent. Depending on the circumstances, abstinence or fertility awareness-based methods (FABMs) should be presented to patients. FABMs are licit, safe, and effective methods of pregnancy prevention. Informed consent is the most effective means of providing patients with pertinent information on the significant risks of contraception. Summary This article discusses the use of the informed consent to provide patients with information on the medical and ethical risks of oral contraceptives. FABMs and abstinence are presented as effective, safe, and licit preferences to oral contraceptives. Discussing known and potential treatment risks is accepted by the medical community and expected by patients (shared decision making). The authors discuss the historical context of Pope Paul VI's encyclical Humanae vitae in relationship to the development and rapid adoption of oral contraceptives.
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Affiliation(s)
| | | | - Teresa A Hilgers
- Pope Paul VI Institute for the Study of Human Reproduction, Omaha, NE, USA
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