Journal
BMC ENDOCRINE DISORDERS
Volume 19, Issue -, Pages -Publisher
BMC
DOI: 10.1186/s12902-019-0377-0
Keywords
Type 2 diabetes; Diabetes care; Cancer; Diabetes complication; All-cause mortality; Primary care; Randomized controlled trial
Categories
Funding
- Danish Medical Research Council
- Danish Research Foundation for General Practice
- Health Insurance Foundation
- Danish Ministry of Health
- Novo Nordisk Farmaka Denmark Ltd.
- Pharmacy Foundation
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BackgroundSurvival from many cancer types is steadily increasing, and as a result, a growing number of cancer patients will live with other chronic diseases, of which diabetes is one of the most prevalent. This study aims to describe the impact of cancer on health outcomes in patients with type 2 diabetes and to compare the effectiveness of a multifactorial intervention in diabetes patients with and without cancer.MethodsThe randomized controlled trial Diabetes Care in General Practice (DCGP) included 1381 patients newly diagnosed with type 2 diabetes. Patients were randomized to either six years of structured personal diabetes care or routine care. In a post hoc analysis, we followed patients for 19years in Danish national registries for the occurrence of diabetes-related outcomes. We used Cox regression models to estimate hazard ratios for outcomes.ResultsAt diagnosis 48 patients had cancer, and 243 patients were diagnosed with cancer during follow up. Patients with diabetes and cancer had excess all-cause mortality (HR 3.33; 95%CI 2.72-4.06), as well as an increased incidence of myocardial infarction (HR 1.76; 95%CI 1.29-2.39) and any diabetes-related outcome (HR 1.36; 95%CI 1.07-1.71). The intervention reduced the risk of both these endpoints in patients without cancer. Furthermore, there was no statistically significant difference in the effectiveness of the intervention among patients with and without cancer.ConclusionsDiabetes patients with cancer had an increased risk of myocardial infarction and any diabetes-related outcome. The observed positive effect of structured personal diabetes care on clinical outcomes did not differ between patients with and without cancer. Attention to and prevention of diabetes complications in patients with both type 2 diabetes and cancer is warranted.Trial registrationClinicalTrials.gov NCT01074762 (February 24, 2010).
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