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Chan DS, Vieira R, Abar L, Aune D, Balducci K, Cariolou M, Greenwood DC, Markozannes G, Nanu N, Becerra‐Tomás N, Giovannucci EL, Gunter MJ, Jackson AA, Kampman E, Lund V, Allen K, Brockton NT, Croker H, Katsikioti D, McGinley‐Gieser D, Mitrou P, Wiseman M, Cross AJ, Riboli E, Clinton SK, McTiernan A, Norat T, Tsilidis KK. Postdiagnosis body fatness, weight change and breast cancer prognosis: Global Cancer Update Program (CUP global) systematic literature review and meta-analysis. Int J Cancer 2023; 152:572-599. [PMID: 36279884 PMCID: PMC10092239 DOI: 10.1002/ijc.34322] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 07/29/2022] [Accepted: 09/05/2022] [Indexed: 02/01/2023]
Abstract
Previous evidence on postdiagnosis body fatness and mortality after breast cancer was graded as limited-suggestive. To evaluate the evidence on body mass index (BMI), waist circumference, waist-hip-ratio and weight change in relation to breast cancer prognosis, an updated systematic review was conducted. PubMed and Embase were searched for relevant studies published up to 31 October, 2021. Random-effects meta-analyses were conducted to estimate summary relative risks (RRs). The evidence was judged by an independent Expert Panel using pre-defined grading criteria. One randomized controlled trial and 225 observational studies were reviewed (220 publications). There was strong evidence (likelihood of causality: probable) that higher postdiagnosis BMI was associated with increased all-cause mortality (64 studies, 32 507 deaths), breast cancer-specific mortality (39 studies, 14 106 deaths) and second primary breast cancer (11 studies, 5248 events). The respective summary RRs and 95% confidence intervals per 5 kg/m2 BMI were 1.07 (1.05-1.10), 1.10 (1.06-1.14) and 1.14 (1.04-1.26), with high between-study heterogeneity (I2 = 56%, 60%, 66%), but generally consistent positive associations. Positive associations were also observed for waist circumference, waist-hip-ratio and all-cause and breast cancer-specific mortality. There was limited-suggestive evidence that postdiagnosis BMI was associated with higher risk of recurrence, nonbreast cancer deaths and cardiovascular deaths. The evidence for postdiagnosis (unexplained) weight or BMI change and all outcomes was graded as limited-no conclusion. The RCT showed potential beneficial effect of intentional weight loss on disease-free-survival, but more intervention trials and well-designed observational studies in diverse populations are needed to elucidate the impact of body composition and their changes on breast cancer outcomes.
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Affiliation(s)
- Doris S.M. Chan
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
| | - Rita Vieira
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
| | - Leila Abar
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
| | - Dagfinn Aune
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
- Department of NutritionBjørknes University CollegeOsloNorway
- Department of Endocrinology, Morbid Obesity and Preventive MedicineOslo University HospitalOsloNorway
- Unit of Cardiovascular and Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska InstitutetStockholmSweden
| | - Katia Balducci
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
| | - Margarita Cariolou
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
| | - Darren C. Greenwood
- Leeds Institute for Data Analytics, Faculty of Medicine and HealthUniversity of LeedsLeedsUK
| | - Georgios Markozannes
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
- Department of Hygiene and EpidemiologyUniversity of Ioannina Medical SchoolIoanninaGreece
| | - Neesha Nanu
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
| | - Nerea Becerra‐Tomás
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
| | - Edward L. Giovannucci
- Department of EpidemiologyHarvard T.H. Chan School of Public HealthBostonMassachusettsUSA
- Department of Nutrition, Harvard T. H. Chan School of Public HealthBostonMassachusettsUSA
| | - Marc J. Gunter
- Nutrition and Metabolism Section, International Agency for Research on CancerLyonFrance
| | - Alan A. Jackson
- Faculty of Medicine, School of Human Development and HealthUniversity of SouthamptonSouthamptonUK
- National Institute of Health Research Cancer and Nutrition CollaborationSouthamptonUK
| | - Ellen Kampman
- Division of Human Nutrition and HealthWageningen University & ResearchWageningenThe Netherlands
| | - Vivien Lund
- World Cancer Research Fund InternationalLondonUK
| | - Kate Allen
- World Cancer Research Fund InternationalLondonUK
| | | | - Helen Croker
- World Cancer Research Fund InternationalLondonUK
| | | | | | | | | | - Amanda J. Cross
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
| | - Elio Riboli
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
| | - Steven K. Clinton
- Division of Medical Oncology, The Department of Internal MedicineCollege of Medicine and Ohio State University Comprehensive Cancer Center, Ohio State UniversityColumbusOhioUSA
| | - Anne McTiernan
- Division of Public Health SciencesFred Hutchinson Cancer Research CenterSeattleWashingtonUSA
| | - Teresa Norat
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
- World Cancer Research Fund InternationalLondonUK
| | - Konstantinos K. Tsilidis
- Department of Epidemiology and BiostatisticsSchool of Public Health, Imperial College LondonLondonUK
- Department of Hygiene and EpidemiologyUniversity of Ioannina Medical SchoolIoanninaGreece
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Yang J, Yang H, Cao L, Yin Y, Shen Y, Zhu W. Prognostic value of metformin in cancers: An updated meta-analysis based on 80 cohort studies. Medicine (Baltimore) 2022; 101:e31799. [PMID: 36626437 PMCID: PMC9750609 DOI: 10.1097/md.0000000000031799] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Experiments have shown that metformin can inhibit cancer cell growth, but clinical observations have been inconsistent, so we pooled the currently available data to evaluate the impact of metformin on cancer survival and progression. METHODS PubMed, web of science, Embase, and Cochrane databases were searched. Pooled hazard ratios (HRs) were identified using a random-effects model to estimate the strength of the association between metformin and survival and progression in cancer patients. RESULTS We incorporated 80 articles published from all databases which satisfied the inclusion criterion. It showed that metformin was associated with better overall survival (hazard ratio [HR] = 0. 81; 95% confidence interval [CI]: [0.77-0.85]) and cancer-specific survival (HR = 0.79; 95% CI: [0.73-0.86]), and metformin was associated with progression-free survival (HR = 0.76; 95% CI: [0.66-0.87]). In patients with diabetes mellitus, the HR of overall survival was 0.79(95% CI: [0.75-0.83]), progression-free survival was 0.72(95% CI: [0.60-0.85]), and the cancer-specific survival was 0.76(95% CI: [0.68-0.86]). It was proposed that metformin can improve the prognosis of cancer patients with diabetes mellitus. CONCLUSION Based on cohort studies, metformin therapy has potential survival benefits for patients with malignancy, especially with the greatest benefits seen in breast cancer on overall survival, progression-free survival, and cancer-specific survival. And metformin also showed potential benefits in cancer-specific survival in colorectal and prostate cancer.
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Affiliation(s)
- Jing Yang
- Oncology Center, The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Wujiang, Jiangsu Province, P.R. China
| | - Hang Yang
- Oncology Center, The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Wujiang, Jiangsu Province, P.R. China
| | - Ling Cao
- Oncology Center, The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Wujiang, Jiangsu Province, P.R. China
| | - Yuzhen Yin
- Oncology Center, The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Wujiang, Jiangsu Province, P.R. China
| | - Ying Shen
- Department of Endocrinology, The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Wujiang, Jiangsu Province, P.R. China
| | - Wei Zhu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, P.R. China
- * Correspondence: Wei Zhu, Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province 210029, P.R. China (e-mail: )
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Hosio M, Urpilainen E, Hautakoski A, Marttila M, Arffman M, Sund R, Ahtikoski A, Puistola U, Läärä E, Karihtala P, Jukkola A. Association of antidiabetic medication and statins with survival from ductal and lobular breast carcinoma in women with type 2 diabetes. Sci Rep 2021; 11:10445. [PMID: 34001921 PMCID: PMC8129135 DOI: 10.1038/s41598-021-88488-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/06/2021] [Indexed: 12/22/2022] Open
Abstract
We investigated the survival of female patients with pre-existing type 2 diabetes (T2D) diagnosed with invasive ductal carcinoma (IDC) and invasive lobular carcinoma (ILC) of breast, in relation to the use of metformin, other antidiabetic medication (ADM) and statins. The study cohort consisted of 3,165 women (2,604 with IDC and 561 with ILC). The cumulative mortality from breast cancer (BC) and from other causes was calculated using the Aalen-Johansen estimator. The cause-specific mortality rates were analysed by Cox models, and adjusted hazard ratios (HRs) were estimated for the use of different medications. No evidence of an association of metformin use with BC mortality was observed in either IDC (HR 0.92, 95% confidence interval [CI] 0.64–1.31) or ILC (HR 0.68, 95% CI 0.32–1.46) patients, when compared to other oral ADMs. The mortality from other causes was found to be lower amongst the IDC patients using metformin (HR 0.64, 95% CI 0.45–0.89), but amongst ILC patients the evidence was inconclusive (HR 1.22, 95% CI 0.64–2.32). Statin use was consistently associated with reduced mortality from BC in IDC patients (HR 0.77, 95% CI 0.62–0.96) and ILC patients (HR 0.59, 95% CI 0.37–0.96), and also mortality from other causes in IDC patients (HR 0.81, 95% CI 0.67–0.96) and in ILC patients (HR 0.66, 95% CI 0.43–1.01). We found no sufficient evidence for the possible effects of metformin and statins on the prognosis of BC being different in the two histological subtypes.
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Affiliation(s)
- Mayu Hosio
- Department of Oncology and Radiotherapy, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, PO Box 22, 90029, Oulu, Finland.
| | - Elina Urpilainen
- Department of Obstetrics and Gynaecology, PEDEGO Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, PO Box 23, 90029, Oulu, Finland
| | - Ari Hautakoski
- Research Unit of Mathematical Sciences, University of Oulu, PO Box 3000, 90014, Oulu, Finland
| | - Mikko Marttila
- Orion Corporation, Orionintie 1, PO Box 65, 02101, Espoo, Finland
| | - Martti Arffman
- Service System Research Unit, Finnish Institute for Health and Welfare, PO Box 30, 00271, Helsinki, Finland
| | - Reijo Sund
- Institute of Clinical Medicine, University of Eastern Finland, PO Box 1627, 70211, Kuopio, Finland
| | - Anne Ahtikoski
- Cancer and Translational Medicine Research Unit, Department of Pathology, Oulu University Hospital and University of Oulu, PO Box 50, 90029, Oulu, Finland
| | - Ulla Puistola
- Department of Obstetrics and Gynaecology, PEDEGO Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, PO Box 23, 90029, Oulu, Finland
| | - Esa Läärä
- Research Unit of Mathematical Sciences, University of Oulu, PO Box 3000, 90014, Oulu, Finland
| | - Peeter Karihtala
- Department of Oncology and Radiotherapy, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, PO Box 22, 90029, Oulu, Finland.,Department of Oncology, Helsinki University Comprehensive Cancer Center, P.O.Box 180, 00029, Helsinki, Finland.,University of Helsinki, Helsinki, Finland
| | - Arja Jukkola
- Department of Oncology and Radiotherapy, Cancer Center Tampere, Tampere University Hospital, Tampere, Finland.,Faculty of Medicine and Health Technology, Tampere University, Box 2000, 33521, Tampere, Finland
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Petrelli F, Cortellini A, Indini A, Tomasello G, Ghidini M, Nigro O, Salati M, Dottorini L, Iaculli A, Varricchio A, Rampulla V, Barni S, Cabiddu M, Bossi A, Ghidini A, Zaniboni A. Association of Obesity With Survival Outcomes in Patients With Cancer: A Systematic Review and Meta-analysis. JAMA Netw Open 2021; 4:e213520. [PMID: 33779745 PMCID: PMC8008284 DOI: 10.1001/jamanetworkopen.2021.3520] [Citation(s) in RCA: 194] [Impact Index Per Article: 64.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 02/08/2021] [Indexed: 12/11/2022] Open
Abstract
Importance Obesity, defined as a body mass index (BMI) greater than 30, is associated with a significant increase in the risk of many cancers and in overall mortality. However, various studies have suggested that patients with cancer and no obesity (ie, BMI 20-25) have worse outcomes than patients with obesity. Objective To assess the association between obesity and outcomes after a diagnosis of cancer. Data Sources PubMed, the Cochrane Library, and EMBASE were searched from inception to January 2020. Study Selection Studies reporting prognosis of patients with obesity using standard BMI categories and cancer were included. Studies that used nonstandard BMI categories, that were limited to children, or that were limited to patients with hematological malignant neoplasms were excluded. Screening was performed independently by multiple reviewers. Among 1892 retrieved studies, 203 (17%) met inclusion criteria for initial evaluation. Data Extraction and Synthesis The Meta-analysis of Observational Studies in Epidemiology (MOOSE) and Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) reporting guidelines were reporting guideline was followed. Data were extracted by multiple independent reviewers. Risk of death, cancer-specific mortality, and recurrence were pooled to provide an adjusted hazard ratio (HR) with a 95% CI . A random-effects model was used for the retrospective nature of studies. Main Outcomes and Measures The primary outcome of the study was overall survival (OS) in patients with cancer, with and without obesity. Secondary end points were cancer-specific survival (CSS) and progression-free survival (PFS) or disease-free survival (DFS). The risk of events was reported as HRs with 95% CIs, with an HR greater than 1 associated with a worse outcome among patients with obesity vs those without. Results A total of 203 studies with 6 320 365 participants evaluated the association of OS, CSS, and/or PFS or DFS with obesity in patients with cancer. Overall, obesity was associated with a reduced OS (HR, 1.14; 95% CI, 1.09-1.19; P < .001) and CSS (HR, 1.17; 95% CI, 1.12-1.23; P < .001). Patients were also at increased risk of recurrence (HR, 1.13; 95% CI, 1.07-1.19; P < .001). Conversely, patients with obesity and lung cancer, renal cell carcinoma, or melanoma had better survival outcomes compared with patients without obesity and the same cancer (lung: HR, 0.86; 95% CI, 0.76-0.98; P = .02; renal cell: HR, 0.74; 95% CI, 0.53-0.89; P = .02; melanoma: HR, 0.74; 95% CI, 0.57-0.96; P < .001). Conclusions and Relevance In this study, obesity was associated with greater mortality overall in patients with cancer. However, patients with obesity and lung cancer, renal cell carcinoma, and melanoma had a lower risk of death than patients with the same cancers without obesity. Weight-reducing strategies may represent effective measures for reducing mortality in these patients.
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Affiliation(s)
- Fausto Petrelli
- Oncology Unit, Azienda Socio Sanitaria Territoriale Bergamo Ovest, Treviglio, Italy
| | - Alessio Cortellini
- Oncology Unit, Department of Biotechnology and Applied Clinical Sciences, San Salvatore Hospital, University of L’Aquila, L’Aquila, Italy
| | - Alice Indini
- Oncology Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Ospedale Maggiore Policlinico, Milano, Italy
| | - Gianluca Tomasello
- Oncology Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Ospedale Maggiore Policlinico, Milano, Italy
| | - Michele Ghidini
- Oncology Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Ospedale Maggiore Policlinico, Milano, Italy
| | - Olga Nigro
- Oncology Unit, Azienda Socio Sanitaria Territoriale Sette Laghi, Ospedale di Circolo, Varese, Italy
| | - Massimiliano Salati
- Oncology Unit, University Hospital of Modena, Modena Cancer Centre, Modena, Italy
| | - Lorenzo Dottorini
- Oncology Unit, Azienda Socio Sanitaria Territoriale Bergamo Est, Seriate, Italy
| | - Alessandro Iaculli
- Oncology Unit, Azienda Socio Sanitaria Territoriale Bergamo Est, Seriate, Italy
| | - Antonio Varricchio
- Surgical Oncology Unit, Azienda Socio Sanitaria Territoriale Bergamo Ovest, Treviglio, Italy
| | - Valentina Rampulla
- Surgical Oncology Unit, Azienda Socio Sanitaria Territoriale Bergamo Ovest, Treviglio, Italy
| | - Sandro Barni
- Oncology Unit, Azienda Socio Sanitaria Territoriale Bergamo Ovest, Treviglio, Italy
| | - Mary Cabiddu
- Oncology Unit, Azienda Socio Sanitaria Territoriale Bergamo Ovest, Treviglio, Italy
| | - Antonio Bossi
- Endocrine Diseases Unit–Diabetes Regional Center, Azienda Socio Sanitaria Territoriale Bergamo Ovest, Treviglio, Italia
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Hosio M, Urpilainen E, Hautakoski A, Marttila M, Arffman M, Sund R, Ahtikoski A, Puistola U, Karihtala P, Jukkola A, Läärä E. Survival after breast cancer in women with type 2 diabetes using antidiabetic medication and statins: a retrospective cohort study. Acta Oncol 2020; 59:1110-1117. [PMID: 32478629 DOI: 10.1080/0284186x.2020.1769858] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background: We assessed survival of breast cancer in women with type 2 diabetes (T2D) treated with metformin, other types of antidiabetic medication (ADM) and statins.Materials and Methods: The study cohort consisted of women with T2D and diagnosed with breast cancer in Finland in 1998─2011. Mortality rates from breast cancer and other causes were analysed by Cox models, and adjusted hazard ratios (HRs) with 95% confidence intervals (Cls) were estimated in relation to the use of different types of medication.Results: The final cohort consisted of 3,533 women. No clear evidence was found for breast cancer mortality being different in metformin users (HR 0.86, 95% Cl 0.63-1.17), but their other-cause mortality appeared to be lower (HR 0.73, 95% Cl 0.55-0.97) in comparison with women using other types of oral ADM. Other-cause mortality was higher among insulin users (HR 1.45, 95% Cl 1.16-1.80) compared with users of other oral ADMs, other than metformin. Prediagnostic statin use was observed to be associated with decreased mortality from both breast cancer (HR 0.76, 95% Cl 0.63-0.92) and other causes (HR 0.75, 95% Cl 0.64-0.87).Conclusions: We did not find any association between ADM use and disease-specific mortality among women with T2D diagnosed with breast cancer. However, interestingly, prediagnostic statin use was observed to predict reduced mortality from breast cancer and other causes. We hypothesise that treating treatment practices of T2D or hypercholesterolaemia of breast cancer patients might affect overall prognosis of women diagnosed with breast cancer and T2D.
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Affiliation(s)
- Mayu Hosio
- Department of Oncology and Radiotherapy, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Elina Urpilainen
- Department of Obstetrics and Gynaecology, PEDEGO Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Ari Hautakoski
- Research Unit of Mathematical Sciences, University of Oulu, Oulu, Finland
| | | | - Martti Arffman
- Service System Research Unit, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Reijo Sund
- Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Anne Ahtikoski
- Cancer and Translational Medicine Research Unit, Department of Pathology, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Ulla Puistola
- Department of Obstetrics and Gynaecology, PEDEGO Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Peeter Karihtala
- Department of Oncology and Radiotherapy, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Department of Oncology, University of Helsinki and Helsinki University Comprehensive Cancer Center, Helsinki, Finland
| | - Arja Jukkola
- Department of Oncology and Radiotherapy, Cancer Centre Tampere, Tampere University Hospital, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Esa Läärä
- Research Unit of Mathematical Sciences, University of Oulu, Oulu, Finland
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Lawrence WR, Hosler AS, Gates Kuliszewski M, Leinung MC, Zhang X, Schymura MJ, Boscoe FP. Impact of preexisting type 2 diabetes mellitus and antidiabetic drugs on all-cause and cause-specific mortality among Medicaid-insured women diagnosed with breast cancer. Cancer Epidemiol 2020; 66:101710. [PMID: 32247208 PMCID: PMC9920233 DOI: 10.1016/j.canep.2020.101710] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 02/12/2020] [Accepted: 03/17/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND We investigated the influence preexisting type 2 diabetes mellitus (T2DM) and antidiabetic drugs have on all-cause and cause-specific mortality among Medicaid-insured women diagnosed with breast cancer. METHODS 9221 women aged <64 years diagnosed with breast cancer and reported to the New York State (NYS) Cancer Registry from 2004 to 2016 were linked with Medicaid claims. Preexisting T2DM was determined by three diagnosis claims for T2DM with at least one claim prior to breast cancer diagnosis and a prescription claim for an antidiabetic drug within three months following breast cancer diagnosis. Estimated menopausal status was determined by age (premenopausal age <50; postmenopausal age ≥50). Hazard ratios (HR) and 95 % confidence intervals (95 %CI) were calculated with Cox proportional hazards regression, adjusting for confounders. RESULTS Women with preexisting T2DM had greater all-cause (HR = 1.40; 95 %CI 1.21, 1.63), cancer-specific (HR = 1.24; 95 %CI 1.04, 1.47), and cardiovascular-specific (HR = 2.46; 95 %CI 1.54, 3.90) mortality hazard compared to nondiabetic women. In subgroup analyses, the association between T2DM and all-cause mortality was found among non-Hispanic White (HR 1.78 95 %CI 1.38, 2.30) and postmenopausal (HR = 1.47; 95 %CI 1.23, 1.77) women, but not among other race/ethnicity groups or premenopausal women. Additionally, compared to women prescribed metformin, all-cause mortality hazard was elevated among women prescribed sulfonylurea (HR = 1.44; 95 %CI 1.06, 1.94) or insulin (HR = 1.54; 95 %CI 1.12, 2.11). CONCLUSION Among Medicaid-insured women with breast cancer, those with preexisting T2DM have an increased mortality hazard, especially when prescribed sulfonylurea or insulin. Further research is warranted to determine the role antidiabetic drugs have on survival among women with breast cancer.
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Affiliation(s)
- Wayne R Lawrence
- Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, State University of New York, One University Place, Rensselaer, NY, United States.
| | - Akiko S Hosler
- Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, State University of New York, One University Place, Rensselaer, NY, United States
| | - Margaret Gates Kuliszewski
- Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, State University of New York, One University Place, Rensselaer, NY, United States; Bureau of Cancer Epidemiology, New York State Department of Health, 150 Broadway, Suite 361, Albany, NY, United States
| | - Matthew C Leinung
- Division of Endocrinology and Metabolism, Department of Medicine, Albany Medical College, 25 Hackett Boulevard MC-141, Albany, NY, United States
| | - Xiuling Zhang
- Bureau of Cancer Epidemiology, New York State Department of Health, 150 Broadway, Suite 361, Albany, NY, United States
| | - Maria J Schymura
- Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, State University of New York, One University Place, Rensselaer, NY, United States; Bureau of Cancer Epidemiology, New York State Department of Health, 150 Broadway, Suite 361, Albany, NY, United States
| | - Francis P Boscoe
- Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, State University of New York, One University Place, Rensselaer, NY, United States; Bureau of Cancer Epidemiology, New York State Department of Health, 150 Broadway, Suite 361, Albany, NY, United States
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Type 2 diabetes, breast cancer specific and overall mortality: Associations by metformin use and modification by race, body mass, and estrogen receptor status. PLoS One 2020; 15:e0232581. [PMID: 32369516 PMCID: PMC7199949 DOI: 10.1371/journal.pone.0232581] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 04/17/2020] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION While type 2 diabetes (T2D) has been associated with increased all-cause mortality among women diagnosed with breast cancer (BC), the association between T2D and breast cancer-specific (BCS) mortality is unresolved. The goal of this study was to examine the association between T2D and BCS mortality and examine the influence of metformin treatment on mortality rates. METHODS A retrospective cohort study was conducted between 2002 and 2008 at Emory University Hospitals among non-Hispanic black and white women who had confirmed diagnosis of stage I-III BC and known diabetes status (T2D: n = 73; non-T2D: n = 514). Cox proportional hazard models were used to estimate hazard ratios (HR) and 95% confidence intervals (CI). RESULTS Compared to non-T2D patients, T2D women had almost a 2-fold increase in BCS mortality after adjusting for covariates (HR = 2.01; 95%CI = 1.02-3.98). Though attenuated, the increased hazard of death was also observed for all-cause mortality (HR = 1.74; 95%CI = 1.06-2.87). T2D patients who were not on metformin had substantially higher hazard of BCS mortality compared to non-diabetic patients (HR = 4.54; 95%CI = 1.98-10.44), whereas the association among T2D patients treated with metformin was weak (HR = 1.20; 95%CI = 0.36-3.97) and included the null. CONCLUSIONS Among women with BC, T2D is associated with increased BCS mortality. Metformin treatment for T2D during the initial diagnosis of BC may improve outcomes.
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He L, Lv Y, Song Y, Zhang B. The prognosis comparison of different molecular subtypes of breast tumors after radiotherapy and the intrinsic reasons for their distinct radiosensitivity. Cancer Manag Res 2019; 11:5765-5775. [PMID: 31303789 PMCID: PMC6612049 DOI: 10.2147/cmar.s213663] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 05/25/2019] [Indexed: 12/18/2022] Open
Abstract
Radiotherapy can increase the cell cycle arrest that promotes apoptosis, reduces the risk of tumor recurrence and has become an irreplaceable component of systematic treatment for patients with breast cancer. Substantial advances in precise radiotherapy unequivocally indicate that the benefits of radiotherapy vary depending on intrinsic subtypes of the disease; luminal A breast cancer has the highest benefit whereas human epidermal growth factor receptor 2 (HER2)-positive and triple negative breast cancer (TNBC) are affected to a lesser extent irrespective of the selection of radiotherapy strategies, such as conventional whole-breast irradiation (CWBI), accelerated partial-breast irradiation (APBI), and hypofractionated whole-breast irradiation (HWBI). The benefit disparity correlates with the differential invasiveness, malignance, and radiosensitivity of the subtypes. A combination of a number of molecular mechanisms leads to the strong radioresistant profile of HER2-positive breast cancer, and sensitization to irradiation can be induced by multiple drugs or compounds in luminal disease and TNBC. In this review, we aimed to summarize the prognostic differences between various subtypes of breast tumors after CWBI, APBI, and HWBI, the potential reasons for drug-enhanced radiosensitivity in luminal breast tumors and TNBC, and the robust radioresistance of HER2-positive cancer. ![]()
Point your SmartPhone at the code above. If you have a QR code reader the video abstract will appear. Or use: https://youtu.be/ugTrSMuQVI8
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Affiliation(s)
- Lin He
- Breast Center B Ward, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, People's Republic of China
| | - Yang Lv
- Department of Oncology, The PLA Navy Anqing Hospital, Anqing, Anhui Province, People's Republic of China
| | - Yuhua Song
- Breast Center B Ward, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, People's Republic of China
| | - Biyuan Zhang
- Department of Radiotherapy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, People's Republic of China
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9
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Safe S, Nair V, Karki K. Metformin-induced anticancer activities: recent insights. Biol Chem 2018; 399:321-335. [PMID: 29272251 DOI: 10.1515/hsz-2017-0271] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 12/11/2017] [Indexed: 12/12/2022]
Abstract
Metformin is a widely used antidiabetic drug, and there is evidence among diabetic patients that metformin is a chemopreventive agent against multiple cancers. There is also evidence in human studies that metformin is a cancer chemotherapeutic agent, and several clinical trials that use metformin alone or in combination with other drugs are ongoing. In vivo and in vitro cancer cell culture studies demonstrate that metformin induces both AMPK-dependent and AMPK-independent genes/pathways that result in inhibition of cancer cell growth and migration and induction of apoptosis. The effects of metformin in cancer cells resemble the patterns observed after treatment with drugs that downregulate specificity protein 1 (Sp1), Sp3 and Sp4 or by knockdown of Sp1, Sp3 and Sp4 by RNA interference. Studies in pancreatic cancer cells clearly demonstrate that metformin decreases expression of Sp1, Sp3, Sp4 and pro-oncogenic Sp-regulated genes, demonstrating that one of the underlying mechanisms of action of metformin as an anticancer agent involves targeting of Sp transcription factors. These observations are consistent with metformin-mediated effects on genes/pathways in many other tumor types.
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Affiliation(s)
- Stephen Safe
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, 4466 TAMU, College Station, TX 77843-4466, USA
| | - Vijayalekshmi Nair
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, 4466 TAMU, College Station, TX 77843-4466, USA
| | - Keshav Karki
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, 4466 TAMU, College Station, TX 77843-4466, USA
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10
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Tang GH, Satkunam M, Pond GR, Steinberg GR, Blandino G, Schünemann HJ, Muti P. Association of Metformin with Breast Cancer Incidence and Mortality in Patients with Type II Diabetes: A GRADE-Assessed Systematic Review and Meta-analysis. Cancer Epidemiol Biomarkers Prev 2018; 27:627-635. [PMID: 29618465 DOI: 10.1158/1055-9965.epi-17-0936] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 12/15/2017] [Accepted: 03/30/2018] [Indexed: 11/16/2022] Open
Abstract
Background: Preclinical data suggest that metformin may reduce breast cancer incidence and improve cancer prognosis. However, the current evidence in observational studies is inconclusive. A systematic review and meta-analysis was conducted to assess the effect of metformin on the incidence of breast cancer and all-cause mortality in patients with type II diabetes (T2D).Methods: A literature search was performed on Medline, EMBASE, and the Cochrane library from inception to November 2016. Outcomes were incidence of breast cancer and all-cause mortality. Risk of bias and overall certainty of evidence was assessed using the Newcastle-Ottawa Scale and Grading of Recommendations Assessment, Development, and Evaluation (GRADE), respectively. Meta-analyses were performed using the most fully adjusted ORs or HRs and 95% confidence intervals (95% CI) as effect measures.Results: A total of 12 observational studies were included for breast cancer incidence and 11 studies for all-cause mortality. No significant association was found between metformin exposure and incidence of breast cancer (OR = 0.93; 95% CI, 0.85-1.03; I2 = 35%). A 45% risk reduction was observed for all-cause mortality (HR = 0.55; 95% CI, 0.44-0.70; I2 = 81%). Presence of publication bias is strongly suspected for both outcomes using Egger's funnel plots.Conclusions: The use of metformin may improve overall survival in patients with T2D and breast cancer. No effect of metformin on the incidence of breast cancer was observed. Interpretation of results is limited by the observational nature of the studies and resulting biases.Impact: Clinical trials are warranted to determine the role of metformin in breast cancer risk reduction and prognosis. Cancer Epidemiol Biomarkers Prev; 27(6); 627-35. ©2018 AACR.
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Affiliation(s)
- Grace H Tang
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Meloja Satkunam
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Gregory R Pond
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada.,Department of Oncology, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Gregory R Steinberg
- Department of Medicine, Division of Endocrinology, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada.,Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Giovanni Blandino
- Department of Oncology, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada.,Oncogenomic and Epigenetic Unit, Italian National Cancer Institute 'Regina Elena,' Rome, Italy
| | - Holger J Schünemann
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Paola Muti
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada. .,Department of Oncology, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
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11
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Cao X, Wu Y, Wang J, Liu K, Wang X. The Effect of Metformin on Mortality Among Diabetic Cancer Patients: A Systematic Review and Meta-analysis. JNCI Cancer Spectr 2017; 1:pkx007. [PMID: 31360833 PMCID: PMC6649807 DOI: 10.1093/jncics/pkx007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 09/16/2017] [Accepted: 09/26/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Most data suggest that cancer patients with diabetes have worse outcomes, which may be reversed with metformin. Metformin might modulate the clinical outcomes of diabetic cancer patients. We performed a systematic review and meta-analysis based on published studies over the past five years to summarize the effects of metformin on diabetic cancer patients. METHODS We systematically searched for studies that were published over the past five years. Then, we evaluated these studies for inclusion and extracted the relevant data. The summary risk estimates for the association between metformin treatment and all-cause mortality (ACM) and cancer-specific mortality (CSM) were analyzed using random or fixed-effects models. Stratified analyses by cancer site and country were also conducted. RESULTS Based on the 42 studies included in our analysis (37 015 diabetic cancer patients), we found a significant benefit associated with metformin treatment on survival corresponding to 27% and 26% reductions in ACM (hazard ratio [HR] = 0.73, 95% confidence interval [CI] = 0.68 to 0.79, P < .001) and CSM (HR = 0.74, 95% CI = 0.64 to 0.86, P < .001), respectively. The ACM rates for colorectal cancer, endometrial cancer, breast cancer, prostate cancer, and ovarian cancer showed significant benefits associated with metformin treatment in our stratified analyses by cancer site. Stratified analyses by cancer site also showed a significant reduction in CSM for breast cancer. This association between metformin treatment and reduced CSM for diabetic breast cancer patients was also observed in our country subgroup analyses. CONCLUSIONS We found an association between metformin exposure and reduced ACM and CSM in diabetic patients with cancer. Our findings suggest that metformin treatment could be an effective treatment option for diabetic cancer patients.
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Affiliation(s)
- Xun Cao
- Affiliations of authors: Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China (XC, YPW, JW, KYL, XW); Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China (KYL, XW)
| | - Yaopan Wu
- Affiliations of authors: Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China (XC, YPW, JW, KYL, XW); Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China (KYL, XW)
| | - Jing Wang
- Affiliations of authors: Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China (XC, YPW, JW, KYL, XW); Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China (KYL, XW)
| | - Kuiyuan Liu
- Affiliations of authors: Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China (XC, YPW, JW, KYL, XW); Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China (KYL, XW)
| | - Xin Wang
- Affiliations of authors: Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China (XC, YPW, JW, KYL, XW); Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China (KYL, XW)
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12
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Wang T, Li Y, Lu HL, Meng QW, Cai L, Chen XS. β-Adrenergic Receptors : New Target in Breast Cancer. Asian Pac J Cancer Prev 2016; 16:8031-9. [PMID: 26745035 DOI: 10.7314/apjcp.2015.16.18.8031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Preclinical studies have demonstrated that β-adrenergic receptor antagonists could improve the prognosis of breast cancer. However, the conclusions of clinical and pharmacoepidemiological studies have been inconsistent. This review was conducted to re-assess the relationship between beta-adrenoceptor blockers and breast cancer prognosis. MATERIALS AND METHODS The literature was searched from PubMed, EMBASE and Web of Nature (Thompson Reuters) databases through using key terms, such as breast cancer and beta- adrenoceptor blockers. RESULTS Ten publications met the inclusion criteria. Six suggested that receiving beta- adrenoceptor blockers reduced the risk of breast cancer-specific mortality, and three of them had statistical significance (hazard ratio (HR)=0.42; 95% CI=0.18-0.97; p=0.042). Two studies reported that risk of recurrence and distant metastasis (DM) were both significantly reduced. One study demonstrated that the risk of relapse- free survival (RFS) was raised significantly with beta-blockers (BBS) (HR= 0.30; 95% CI=0.10-0.87; p=0.027). One reported longer disease-free interval (Log Rank (LR)=6.658; p=0.011) in BBS users, but there was no significant association between overall survival (OS) and BBS (HR= 0.35; 95% CI=0.12-1.0; p=0.05) in five studies. CONCLUSIONS Through careful consideration, it is suggested that beta-adrenoceptor blockers use may be associated with improved prognosis in breast cancer patients. Nevertheless, larger size studies are needed to further explore the relationship between beta-blocker drug use and breast cancer prognosis.
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Affiliation(s)
- Ting Wang
- Department of Internal Medical Oncology, Harbin Medical University Cancer Hospital, Heilongjiang Province, China E-mail : ;
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13
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Cerullo M, Gani F, Chen SY, Canner J, Pawlik TM. Metformin Use Is Associated with Improved Survival in Patients Undergoing Resection for Pancreatic Cancer. J Gastrointest Surg 2016; 20:1572-80. [PMID: 27255657 DOI: 10.1007/s11605-016-3173-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 05/16/2016] [Indexed: 01/31/2023]
Abstract
Preclinical evidence has demonstrated anti-tumorigenic effects of metformin. The effects of metformin following pancreatic cancer, however, remain undefined. We sought to assess the association between metformin use and survival using a large, nationally representative sample of patients undergoing surgery for pancreatic cancer. Patients undergoing a pancreatic resection between January 01, 2010, and December 31, 2012, were identified using the Truven Health MarketScan database. Clinical data, including history of metformin use, as well as operative details and information on long-term outcomes were collected. Multivariable Cox proportional hazards regression analysis was performed to assess the effect of metformin use on overall survival (OS). A total of 3393 patients were identified. The mean age of patients was 54.2 years (SD = 9.1 years). Roughly one half of patients were female (n = 1735, 51.1 %); 49.1 % (n = 1665) presented with a Charlson comorbidity index of 3 or greater (CCI ≥3); and 19.6 % (n = 664) had diabetes. At the time of surgery, 60.0 % (n = 2034) of patients underwent a pancreaticoduodenectomy, 35.7 % (n = 1212) a partial/distal pancreatectomy, while 4.3 % (n = 147) had a total pancreatectomy. On pathology, 1057 (31.2 %) had lymph node metastasis. Metformin use was identified in 456 patients (13.4 %) and was more commonly administered among patients without locally advanced disease (14.3 vs. 11.6 %, p = 0.038). While OS was comparable between patients within the first year of surgery (OS at 1 year 65.4 % [95 % confidence interval (CI) 63.4-67.3 %] vs. 69.2 % [95 % CI 64.2-73.4 %]), patients who received metformin demonstrated an improved OS beginning at 18 months following surgery. On multivariable analysis adjusting for patient and clinicopathologic characteristics, metformin use was independently associated with a decreased risk of mortality (hazard ratio [HR] = 0.79, 95 % CI 0.67-0.93, p = 0.005). Metformin use was associated with an improved overall survival among patients undergoing pancreatic surgery for pancreatic cancer. Further work is necessary to better understand its role in modifying cancer-specific and overall health outcomes.
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Affiliation(s)
- Marcelo Cerullo
- Department of Surgery, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Blalock 688, Baltimore, MD, 21287, USA
| | - Faiz Gani
- Department of Surgery, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Blalock 688, Baltimore, MD, 21287, USA
| | - Sophia Y Chen
- Department of Surgery, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Blalock 688, Baltimore, MD, 21287, USA
| | - Joe Canner
- Department of Surgery, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Blalock 688, Baltimore, MD, 21287, USA
| | - Timothy M Pawlik
- Department of Surgery, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Blalock 688, Baltimore, MD, 21287, USA.
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14
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Cabello P, Pineda B, Tormo E, Lluch A, Eroles P. The Antitumor Effect of Metformin Is Mediated by miR-26a in Breast Cancer. Int J Mol Sci 2016; 17:E1298. [PMID: 27517917 PMCID: PMC5000695 DOI: 10.3390/ijms17081298] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/29/2016] [Accepted: 08/04/2016] [Indexed: 12/22/2022] Open
Abstract
Metformin, a drug approved for diabetes type II treatment, has been associated with a reduction in the incidence of breast cancer and metastasis and increased survival in diabetic breast cancer patients. High levels of miR-26a expression have been proposed as one of the possible mechanisms for this effect; likewise, this miRNA has also been associated with survival/apoptosis processes in breast cancer. Our aim was to evaluate if miR-26a and some of its targets could mediate the effect of metformin in breast cancer. The viability of MDA-MB-231, MDA-MB-468, and MCF-7 breast cancer cell lines was evaluated with an MTT assay after ectopic overexpression and/or downregulation of miR-26a. Similarly, the expression levels of the miR-26a targets CASP3, CCNE2, ABL2, APAF1, XIAP, BCL-2, PTEN, p53, E2F3, CDC25A, BCL2L1, MCL-1, EZH2, and MTDH were assessed by quantitative polymerase chain reaction (PCR). The effect of metformin treatment on breast cancer cell viability and miR-26a, BCL-2, PTEN, MCL-1, EZH2, and MTDH modulation were evaluated. Wound healing experiments were performed to analyze the effect of miR-26a and metformin treatment on cell migration. MiR-26a overexpression resulted in a reduction in cell viability that was partially recovered by inhibiting it. E2F3, MCL-1, EZH2, MTDH, and PTEN were downregulated by miR-26a and the PTEN (phosphatase and tensin homolog) protein was also reduced after miR-26a overexpression. Metformin treatment reduced breast cancer cell viability, increased miR-26a expression, and led to a reduction in BCL-2, EZH2, and PTEN expression. miR-26a inhibition partly prevents the metformin viability effect and the PTEN and EZH2 expression reduction. Our results indicate that metformin effectively reduces breast cancer cell viability and suggests that the effects of the drug are mediated by an increase in miR-26a expression and a reduction of its targets, PTEN and EHZ2 Thus, the use of metformin in breast cancer treatment constitutes a promising potential breast cancer therapy.
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Affiliation(s)
- Paula Cabello
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain.
| | - Begoña Pineda
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain.
| | - Eduardo Tormo
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain.
| | - Ana Lluch
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain.
- Oncology and Hematology Department, Hospital Clinico Universitario, 46010 Valencia, Spain.
| | - Pilar Eroles
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain.
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15
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Ferroni P, Riondino S, Laudisi A, Portarena I, Formica V, Alessandroni J, D'Alessandro R, Orlandi A, Costarelli L, Cavaliere F, Guadagni F, Roselli M. Pretreatment Insulin Levels as a Prognostic Factor for Breast Cancer Progression. Oncologist 2016; 21:1041-9. [PMID: 27388232 DOI: 10.1634/theoncologist.2015-0462] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 02/09/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Based on the hypothesis that impaired glucose metabolism might be associated with survival outcomes independently of overt diabetes, we sought to investigate the prognostic value of routinely used glycemic parameters in a prospective study of breast cancer (BC) patients. PATIENTS AND METHODS Fasting blood glucose, insulin and HbA1c levels, and insulin resistance (assessed by the Homeostasis Model Assessment [HOMA] index) at diagnosis were evaluated in 286 nondiabetic BC patients (249 with primary cancer, 37 with metastatic) with respect to those parameters' possible associations with clinicopathological features and survival outcomes. As a control group, 143 healthy women matched in a 2:1 ratio for age, blood lipid levels, and body mass index were also investigated. RESULTS Fasting blood glucose level (mean ± SD: 99 ± 26 vs. 85 ± 15 mg/dL), insulin level (median: 10.0 vs. 6.8 μIU/mL), and HOMA index (median: 2.2 vs. 1.4), but not HbA1c level, were significantly elevated in BC patients compared with control subjects. Receiver operating characteristics analysis showed comparable areas for blood glucose and insulin levels, and HOMA index (ranging from 0.668 to 0.671). Using a cutoff level of 13 μIU/mL, insulin had the best specificity (92%) and sensitivity (41%), was significantly associated with disease stage, and acted as a negative prognostic marker of progression-free survival (hazard ratio: 2.17; 95% confidence interval: 1.13-4.20) independently of menopausal status, disease stage, hormone receptor status, and human epidermal growth factor receptor 2 and Ki67 expression. CONCLUSION These results suggest that insulin determination might provide prognostic information in BC and support the hypothesis that lifestyle and/or pharmacological interventions targeting glucose metabolism could be considered to improve survival outcome of selected BC patients. IMPLICATIONS FOR PRACTICE Pretreatment insulin levels may represent a biomarker of adverse prognosis in nondiabetic women with breast cancer, independently of other well-established prognostic factors (i.e., stage, hormone receptors, HER2/neu, and Ki67). This finding has important implications, because it provides the rationale for lifestyle or insulin-targeting pharmacologic interventions as a means of improving breast cancer outcomes not only in early stages, but also in advanced-stage breast cancer patients with aggressive tumor phenotypes (HER2-negative hormone-resistant, or triple-negative breast cancer), in which treatments are still challenging. The possibility of using insulin as a biomarker to guide insulin-targeted interventions also should be taken into account.
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Affiliation(s)
| | - Silvia Riondino
- Interinstitutional Multidisciplinary Biobank, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Pisana, Rome, Italy Department of Systems Medicine, Medical Oncology, Tor Vergata Clinical Center, Tor Vergata University of Rome, Rome, Italy
| | - Anastasia Laudisi
- Department of Systems Medicine, Medical Oncology, Tor Vergata Clinical Center, Tor Vergata University of Rome, Rome, Italy
| | - Ilaria Portarena
- Department of Systems Medicine, Medical Oncology, Tor Vergata Clinical Center, Tor Vergata University of Rome, Rome, Italy
| | - Vincenzo Formica
- Department of Systems Medicine, Medical Oncology, Tor Vergata Clinical Center, Tor Vergata University of Rome, Rome, Italy
| | - Jhessica Alessandroni
- Interinstitutional Multidisciplinary Biobank, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Pisana, Rome, Italy
| | - Roberta D'Alessandro
- Interinstitutional Multidisciplinary Biobank, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Pisana, Rome, Italy
| | - Augusto Orlandi
- Anatomic Pathology, Department of Biomedicine and Prevention, Tor Vergata University of Rome, Rome, Italy
| | | | | | - Fiorella Guadagni
- San Raffaele Roma Open University, Rome, Italy Interinstitutional Multidisciplinary Biobank, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Pisana, Rome, Italy
| | - Mario Roselli
- Department of Systems Medicine, Medical Oncology, Tor Vergata Clinical Center, Tor Vergata University of Rome, Rome, Italy
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16
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Irie H, Banno K, Yanokura M, Iida M, Adachi M, Nakamura K, Umene K, Nogami Y, Masuda K, Kobayashi Y, Tominaga E, Aoki D. Metformin: A candidate for the treatment of gynecological tumors based on drug repositioning. Oncol Lett 2016; 11:1287-1293. [PMID: 26893732 DOI: 10.3892/ol.2016.4075] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 11/26/2015] [Indexed: 01/22/2023] Open
Abstract
Metformin is a first-line drug used for the treatment of type 2 diabetes. Recently, metformin has been reported to reduce the carcinogenic risk and inhibit tumor cell growth in glioma and breast cancer. The anticancer action of metformin involves the enhancement of phosphorylation of liver kinase B1, activation of adenosine monophosphate-activated protein kinase and inhibition of mammalian target of rapamycin, which reduces cell growth. Metformin is anticipated to exert antitumor effects in gynecological cancer, and its efficacy for the treatment of endometrial, breast and ovarian cancer has been suggested in preclinical studies and clinical trials. Although the effect of metformin on cervical cancer remains to be examined in clinical trials, its antitumor effects have been reported in preclinical studies. Thus, the use of metformin for the treatment of gynecological cancer may become a successful example of drug repositioning, following establishment of the drug's antitumor effects, risk evaluation, screening and validation of efficacy.
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Affiliation(s)
- Haruko Irie
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Kouji Banno
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Megumi Yanokura
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Miho Iida
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Masataka Adachi
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Kanako Nakamura
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Kiyoko Umene
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Yuya Nogami
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Kenta Masuda
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Yusuke Kobayashi
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Eiichiro Tominaga
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Daisuke Aoki
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
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Zhang Y, Storr SJ, Johnson K, Green AR, Rakha EA, Ellis IO, Morgan DAL, Martin SG. Involvement of metformin and AMPK in the radioresponse and prognosis of luminal versus basal-like breast cancer treated with radiotherapy. Oncotarget 2015; 5:12936-49. [PMID: 25427448 PMCID: PMC4350336 DOI: 10.18632/oncotarget.2683] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 11/04/2014] [Indexed: 11/25/2022] Open
Abstract
Metformin is under evaluation as a potential anticancer agent. Expression of total and phospho(Thr172)-adenosine monophosphate-activated kinase-α (AMPKα and pAMPKα(Thr172) respectively), a main metformin target, was examined in radiotherapy treated breast cancers and metformin's ability to modulate Trx system expression and breast cancer radiosensitivity evaluated in vitro. AMPKα and pAMPKα(Thr172) expression was assessed using a discovery (n=166) and validation cohort (n=609). Metformin's role in regulating radioresponse, and Trx family expression, was examined via clonogenic assays and Western blots. Intracellular reactive oxygen species (ROS) levels, cell cycle progression and apoptosis were assessed by flow cytometry. High AMPKα expression associated with improved local recurrence-free (P=0.019), relapse-free (P=0.016) and breast cancer-specific survival (P=0.000065) and was, from multivariate analysis, an independent prognostic factor from the discovery cohort. From the validation cases AMPKα expression associated with relapse-free and breast cancer-specific survival in luminal breast cancers. Metformin substantially increased radiosensitivity, intracellular ROS levels and reduced Trx expression, in luminal breast cancer cells, but had little effect on basal phenotype cells. In conclusion, high AMPKα expression associates with improved prognosis, especially in luminal breast cancer. Metformin preferentially radiosensitises luminal breast cancer cells, potentially due to alterations to intracellular ROS levels via modulation of Trx family protein expression.
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Affiliation(s)
- Yimin Zhang
- Academic Unit of Clinical Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK
| | - Sarah J Storr
- Academic Unit of Clinical Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK
| | - Kerstie Johnson
- Clinical Oncology, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK
| | - Andrew R Green
- Histopathology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK
| | - Emad A Rakha
- Histopathology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK
| | - Ian O Ellis
- Histopathology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK
| | - David A L Morgan
- Clinical Oncology, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK
| | - Stewart G Martin
- Academic Unit of Clinical Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, UK
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18
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Xu H, Chen K, Jia X, Tian Y, Dai Y, Li D, Xie J, Tao M, Mao Y. Metformin Use Is Associated With Better Survival of Breast Cancer Patients With Diabetes: A Meta-Analysis. Oncologist 2015; 20:1236-44. [PMID: 26446233 DOI: 10.1634/theoncologist.2015-0096] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 08/18/2015] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Diabetic patients with breast cancer receiving metformin and neoadjuvant chemotherapy have a higher pathologic complete response rate than do diabetic patients not receiving metformin, but findings on salvage treatment have been inconsistent. We performed a meta-analysis to assess the effect of adding metformin to standard therapy on the prognosis of breast cancer patients with diabetes. METHODS We searched PubMed, Embase, Web of Science (Thomson Scientific), China Knowledge Resource Integrated Database, VIP journal integration platform, and Chinese BioMedical Literature Database from inception to January 10, 2015, without language restrictions, including references related to metformin, breast cancer, and prognosis. We performed the meta-analysis using a random-effects model, with hazard ratios (HRs) and 95% confidence intervals (95% CIs) as effect measures. RESULTS A total of 11 studies consisting of 5,464 breast cancer patients with diabetes were included, comprising 2,760 patients who had received metformin and 2,704 patients who had not. The meta-analysis showed that metformin was associated with better overall survival times (HR: 0.53; 95% CI: 0.39-0.71) and cancer-specific survival times (HR: 0.89; 95% CI: 0.79-1.00). Subgroup analysis revealed that metformin improved the overall survival by 65% after adjusting for hormone receptor expression (HR: 0.35; 95% CI: 0.15-0.84). Taking metformin after the diagnosis of breast cancer was still associated with prolonged overall survival. CONCLUSION The use of metformin in standard cancer therapy might improve both overall and cancer-specific survivals of diabetic patients with breast cancer. IMPLICATIONS FOR PRACTICE Diabetic patients with breast cancer receiving metformin and neoadjuvant chemotherapy have a higher pathologic complete response rate than diabetic patients not receiving metformin, but findings on salvage treatment have been inconsistent. The meta-analysis showed that metformin was associated with better overall survival times and cancer-specific survival times. Subgroup analysis revealed that metformin improved the overall survival by 65% after adjusting for hormone receptor expression. Taking metformin after the diagnosis of breast cancer was still associated with prolonged overall survival. The findings of this study highlight the potential usage of metformin in diabetic patients with breast cancer.
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Affiliation(s)
- Hong Xu
- Department of Oncology, First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Kai Chen
- Department of Oncology, First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Xiaoyan Jia
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yali Tian
- Department of Oncology, Suzhou Xiangcheng People's Hospital, Suzhou, People's Republic of China
| | - Yun Dai
- Department of Oncology, First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Dapeng Li
- Department of Oncology, First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Jing Xie
- Department of Oncology, First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Min Tao
- Department of Oncology, First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China Jiangsu Institute of Clinical Immunology, Suzhou, People's Republic of China
| | - Yixiang Mao
- Department of Oncology, First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA Jiangsu Institute of Clinical Immunology, Suzhou, People's Republic of China
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19
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Yang T, Yang Y, Liu S. Association between Metformin Therapy and Breast Cancer Incidence and Mortality: Evidence from a Meta-Analysis. J Breast Cancer 2015; 18:264-70. [PMID: 26472977 PMCID: PMC4600691 DOI: 10.4048/jbc.2015.18.3.264] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 05/15/2015] [Indexed: 12/20/2022] Open
Abstract
Purpose Metformin may be associated with a decreased risk of breast cancer. We performed a meta-analysis to assess the effect of metformin intake on breast cancer risk and mortality. Methods We performed a PubMed and EMbase search for all available studies that described the risk of breast cancer and all-cause mortality in relation to the use of metformin among patients with type 2 diabetes mellitus. Pooled relative risks (RRs) were determined using a random effects model to assess the strength of association between metformin and the risk of breast cancer. Results Fifteen articles from PubMed satisfied the inclusion criteria, including a total of 838,333 participants. Compared with the control group, metformin use was not related to a reduced incidence of breast cancer (RR, 0.964; 95% confidence interval [CI], 0.761-1.221; p=0.761). However, metformin therapy was associated with decreased all-cause mortality (RR, 0.652; 95% CI, 0.488-0.873; p=0.004). No obvious publication bias was detected (incidence: pBegg=0.755, pEgger=0.008; mortality: pBegg=0.072, pEgger=0.185). Conclusion The present study suggested that metformin therapy may decrease the all-cause mortality of patients affected by breast cancer. However, this finding should be considered carefully and confirmed with further studies.
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Affiliation(s)
- Ting Yang
- Department of Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuan Yang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shengchun Liu
- Department of Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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20
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Ferroni P, Riondino S, Buonomo O, Palmirotta R, Guadagni F, Roselli M. Type 2 Diabetes and Breast Cancer: The Interplay between Impaired Glucose Metabolism and Oxidant Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:183928. [PMID: 26171112 PMCID: PMC4480937 DOI: 10.1155/2015/183928] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 05/28/2015] [Indexed: 12/13/2022]
Abstract
Metabolic disorders, especially type 2 diabetes and its associated complications, represent a growing public health problem. Epidemiological findings indicate a close relationship between diabetes and many types of cancer (including breast cancer risk), which regards not only the dysmetabolic condition, but also its underlying risk factors and therapeutic interventions. This review discusses the advances in understanding of the mechanisms linking metabolic disorders and breast cancer. Among the proposed mechanisms to explain such an association, a major role is played by the dysregulated glucose metabolism, which concurs with a chronic proinflammatory condition and an associated oxidative stress to promote tumour initiation and progression. As regards the altered glucose metabolism, hyperinsulinaemia, both endogenous due to insulin-resistance and drug-induced, appears to promote tumour cell growth through the involvement of innate immune activation, platelet activation, increased reactive oxygen species, exposure to protumorigenic and proangiogenic cytokines, and increased substrate availability to neoplastic cells. In this context, understanding the relationship between metabolic disorders and cancer is becoming imperative, and an accurate analysis of these associations could be used to identify biomarkers able to predict disease risk and/or prognosis and to help in the choice of proper evidence-based diagnostic and therapeutic protocols.
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Affiliation(s)
- Patrizia Ferroni
- San Raffaele Rome University, IRCCS San Raffaele Pisana, Research Center, Via di Val Cannuta 247, 00166 Rome, Italy
| | - Silvia Riondino
- San Raffaele Rome University, IRCCS San Raffaele Pisana, Research Center, Via di Val Cannuta 247, 00166 Rome, Italy
- Department of Systems Medicine, Medical Oncology, Tor Vergata Clinical Center, University of Rome Tor Vergata, Viale Oxford 81, 00133 Rome, Italy
| | - Oreste Buonomo
- Department of Surgery, Division of Surgical Oncology, Tor Vergata Clinical Center, University of Rome Tor Vergata, Viale Oxford 81, 00133 Rome, Italy
| | - Raffaele Palmirotta
- San Raffaele Rome University, IRCCS San Raffaele Pisana, Research Center, Via di Val Cannuta 247, 00166 Rome, Italy
| | - Fiorella Guadagni
- San Raffaele Rome University, IRCCS San Raffaele Pisana, Research Center, Via di Val Cannuta 247, 00166 Rome, Italy
| | - Mario Roselli
- Department of Systems Medicine, Medical Oncology, Tor Vergata Clinical Center, University of Rome Tor Vergata, Viale Oxford 81, 00133 Rome, Italy
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21
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Kim HJ, Kwon H, Lee JW, Kim HJ, Lee SB, Park HS, Sohn G, Lee Y, Koh BS, Yu JH, Son BH, Ahn SH. Metformin increases survival in hormone receptor-positive, HER2-positive breast cancer patients with diabetes. Breast Cancer Res 2015; 17:64. [PMID: 25935404 PMCID: PMC4504447 DOI: 10.1186/s13058-015-0574-3] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 04/21/2015] [Indexed: 12/20/2022] Open
Abstract
Introduction Metformin use has recently been observed to decrease both the rate and mortality of breast cancer. Our study was aim to determine whether metformin use is associated with survival in diabetic breast cancer patients by breast cancer subtype and systemic treatment. Methods Data from the Asan Medical Center Breast Cancer Database from 1997 to 2007 were analyzed. The study cohort comprised 6,967 nondiabetic patients, 202 diabetic patients treated with metformin, and 184 diabetic patients that did not receive metformin. Patients who were divided into three groups by diabetes status and metformin use were also divided into four subgroups by hormone receptor and HER2-neu status. Results In Kaplan-Meier analysis, the metformin group had a significantly better overall and cancer specific survival outcome compared with non metformin diabetic group (P <0.005 for both). There was no difference in survival between the nondiabetic and metformin groups. In multivariate analysis, Compared with metformin group, patients who did not receive metformin tended to have a higher risk of metastasis with HR 5.37 (95 % CI, 1.88 to 15.28) and breast cancer death with HR 6.51 (95 % CI, 1.88 to 15.28) on the hormone receptor-positive and HER2-negative breast cancer. The significant survival benefit of metformin observed in diabetic patients who received chemotherapy and endocrine therapy (HR for disease free survival 2.14; 95 % CI 1.14 to 4.04) was not seen in diabetic patients who did not receive these treatments. Conclusion Patients receiving metformin treatment when breast cancer diagnosis show a better prognosis only if they have hormone receptor-positive, HER2-positive tumors. Metformin treatment might provide a survival benefit when added to systemic therapy in diabetic patients.
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Affiliation(s)
- Hee Jeong Kim
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Hyunwook Kwon
- Division of Vascular Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Jong Won Lee
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Hwa Jung Kim
- Department of Clinical Epidemiology and Biostatics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Sae Byul Lee
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Hee Sung Park
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Guiyun Sohn
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Yura Lee
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Beom Seok Koh
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Jong Han Yu
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Byung Ho Son
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Sei Hyun Ahn
- Division of Breast and Endocrine Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
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Hatoum D, McGowan EM. Recent advances in the use of metformin: can treating diabetes prevent breast cancer? BIOMED RESEARCH INTERNATIONAL 2015; 2015:548436. [PMID: 25866793 PMCID: PMC4383151 DOI: 10.1155/2015/548436] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 10/21/2014] [Indexed: 12/16/2022]
Abstract
There is substantial epidemiological evidence pointing to an increased incidence of breast cancer and morbidity in obese, prediabetic, and diabetic patients. In vitro studies strongly support metformin, a diabetic medication, in breast cancer therapy. Although metformin has been heralded as an exciting new breast cancer treatment, the principal consideration is whether metformin can be used as a generic treatment for all breast cancer types. Importantly, will metformin be useful as an inexpensive therapy for patients with comorbidity of diabetes and breast cancer? In general, meta-analyses of clinical trial data from retrospective studies in which metformin treatment has been used for patients with diabetes and breast cancer have a positive trend; nevertheless, the supporting clinical data outcomes remain inconclusive. The heterogeneity of breast cancer, confounded by comorbidity of disease in the elderly population, makes it difficult to determine the actual benefits of metformin therapy. Despite the questionable evidence available from observational clinical studies and meta-analyses, randomized phases I-III clinical trials are ongoing to test the efficacy of metformin for breast cancer. This special issue review will focus on recent research, highlighting in vitro research and retrospective observational clinical studies and current clinical trials on metformin action in breast cancer.
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Affiliation(s)
- Diana Hatoum
- School of Medical and Molecular Biosciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Eileen M. McGowan
- School of Medical and Molecular Biosciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
- School of Medicine, University of Sydney, Camperdown, Sydney, NSW 2006, Australia
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Yang X, Sun D, Tian Y, Ling S, Wang L. Metformin sensitizes hepatocellular carcinoma to arsenic trioxide-induced apoptosis by downregulating Bcl2 expression. Tumour Biol 2014; 36:2957-64. [PMID: 25492486 DOI: 10.1007/s13277-014-2926-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 11/28/2014] [Indexed: 12/21/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a highly malignant tumor that can evolve rapidly to acquire resistance to conventional chemotherapies. Arsenic trioxide (ATO) is a traditional Asian medicine, and a phase II study has shown that treatment with ATO alone was not effective against HCC. Bcl2 is an antiapoptotic protein that regulates chemotherapy in HCC. Metformin is reported to decrease Bcl2 expression, and the purpose of this study was to verify whether metformin could potentiate the anti-HCC efficacy of ATO in vitro. In the present study, we used metformin and ATO alone or in combination and then tested proliferation, apoptosis, and Bcl2 level of HCC cells. The results showed that metformin enhanced both the proliferation-inhibiting and apoptosis-inducing effects of ATO on HCC cell lines HepG2 and BEL7402. Furthermore, this activity proceeded via a mechanism involving metformin-induced downregulation of Bcl2. A combination of ATO and metformin is therefore a potentially promising approach for HCC therapy.
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Affiliation(s)
- Xuejun Yang
- Dalian Medical University, 9 Lvshunnan Road, Dalian, 116044, Liaoning, China,
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24
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Luo J, Virnig B, Hendryx M, Wen S, Chelebowski R, Chen C, Rohan T, Tinker L, Wactawski-Wende J, Lessin L, Margolis K. Diabetes, diabetes treatment and breast cancer prognosis. Breast Cancer Res Treat 2014; 148:153-62. [PMID: 25261292 PMCID: PMC4393950 DOI: 10.1007/s10549-014-3146-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 09/19/2014] [Indexed: 12/13/2022]
Abstract
The objectives of this study are to assess the impact of pre-existing diabetes and diabetes treatment on breast cancer prognosis. 8,108 women with centrally confirmed invasive breast cancer in the Women's Health Initiative diagnosed between 1998 and 2013 were followed through the date of death or September 20, 2013. Information on diabetes and diabetes therapy were obtained via self-report and face-to-face review of current medication containers, respectively. Cox proportional hazard regression was used to estimate adjusted relative hazard ratios for overall mortality. The proportional subdistribution hazard model was used to estimate hazard ratios for breast cancer-specific mortality. Compared with women without diabetes, women with diabetes had significantly increased risk of overall mortality (HR 1.26 95 % CI 1.06-1.48), especially among those who took insulin or had longer duration of diabetes. However, diabetes was not associated with increased risk of breast cancer-specific mortality, regardless of type of treatment and duration of diabetes, despite the significant association of diabetes with unfavorable tumor characteristics. Our large prospective cohort study provides additional evidence that pre-existing diabetes increases risk of total mortality among women with breast cancer. The increased total mortality associated with diabetes was mainly driven by increased risk of dying from diseases other than breast cancer. Thus, the continuum of care for breast cancer patients with diabetes should include careful attention to CVD risk factors and other non-cancer conditions.
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Affiliation(s)
- Juhua Luo
- Department of Epidemiology and Biostatistics, School of Public Health, Indiana University, 1025 E. 7th Street, Bloomington, IN, 47405, USA,
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25
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Zhang ZJ, Li S. The prognostic value of metformin for cancer patients with concurrent diabetes: a systematic review and meta-analysis. Diabetes Obes Metab 2014; 16:707-10. [PMID: 24460896 DOI: 10.1111/dom.12267] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 01/05/2014] [Accepted: 01/19/2014] [Indexed: 12/24/2022]
Abstract
AIM Emerging evidence from epidemiologic studies and basic science suggests a potential antitumour effect of metformin. However, whether metformin improves survival in cancer patients remains inconclusive. METHODS A literature search was performed using the PubMed, EMbase and SciVerse Scopus databases. Pooled effect estimates were derived using a random-effects meta-analysis model. RESULTS Of the 28 studies retrieved, the pooled effect estimates showed that metformin was associated with lower risk of all-cause mortality in cancer patients with concurrent diabetes, particularly for breast [pooled relative risk (RR) 0.70, 95% CI 0.55, 0.88; p = 0.003], colorectal (RR 0.70, 95% CI 0.59, 0.84; p < 0.001), ovarian (RR 0.44, 95% CI 0.30, 0.64; p < 0.001) and endometrial cancer (RR 0.49, 95% CI 0.32, 0.73; p = 0.001). In addition, metformin was associated with lower risks of cancer-specific mortality. CONCLUSIONS The findings of this study support the hypothesis that metformin improves the survival for cancer patients with concurrent diabetes, particularly for breast, colorectal, ovarian, and endometrial cancer. Further investigation is warranted.
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Affiliation(s)
- Z-J Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Wuhan University, Wuhan, China
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Besic N, Satej N, Ratosa I, Horvat AG, Marinko T, Gazic B, Petric R. Long-term use of metformin and the molecular subtype in invasive breast carcinoma patients - a retrospective study of clinical and tumor characteristics. BMC Cancer 2014; 14:298. [PMID: 24774412 PMCID: PMC4005811 DOI: 10.1186/1471-2407-14-298] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 04/23/2014] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Metformin may exhibit inhibitory effects on cancer cells by inhibiting mTOR signaling pathway. The aim of our retrospective study was to examine if patients with breast carcinoma (BC) and diabetes mellitus (DM) receiving metformin have a lower stage of carcinoma in comparison to patients not receiving metformin, and if the use of metformin correlates with the molecular subtype of BC. METHODS A chart review of 253 patients with invasive BC and DM (128 on metformin and 125 not on metformin) was performed. Control group consisted of 320 consecutive patients with invasive BC without DM. BC subtypes were classified by immunohistochemical surrogates as luminal A (estrogen receptor [ER] + and/or progesterone receptor [PR]+, HER-2-), luminal B (ER + and/or PR+, HER-2+), HER-2 (ER-, PR-, HER-2+), triple-negative/basal (ER-, PR-, HER-2-). RESULTS Patients on metformin had a lower proportion of T3 or T4 tumors than patients who were not receiving metformin (16% vs. 26%; p = 0.035). No statistical difference was found between the two study groups in N stage. Patients with DM on metformin, with DM not on metformin and the control group had different molecular subtypes of BC (p = 0.01): the luminal A subtype was found in 78%, 83% and 71%, the luminal B in 12.6%, 9% and 11%, HER-2 in 0.8%, 1.6% and 8%, and the triple-negative/basal-like subtype in 8.6%, 6.4% and 10%, respectively. CONCLUSION Our data indicate that long-term use of metformin use correlates with molecular subtype of BC in diabetics on metformin in comparison to diabetics not on metformin and patients without DM. However, most likely, different distribution of the molecular subtypes of BC in these three groups of patients was caused by other risk factors for breast carcinoma, such as age of patients or obesity.
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Affiliation(s)
- Nikola Besic
- Institute of Oncology Ljubljana, Zaloska 2, 1000 Ljubljana, Slovenia.
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27
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Treatment and outcomes in diabetic breast cancer patients. Breast Cancer Res Treat 2014; 143:551-70. [DOI: 10.1007/s10549-014-2833-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 01/07/2014] [Indexed: 01/03/2023]
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