Impact of Glucose-Lowering Agents on the Risk of Cancer in Type 2 Diabetic Patients. The Barcelona Case-Control StudyReportar como inadecuado

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The aim of the present study is to evaluate the impact of glucose-lowering agents in the risk of cancer in a large type 2 diabetic population.


A nested case-control study was conducted within a defined cohort 275,164 type 2 diabetic patients attending 16 Primary Health Care Centers of Barcelona. Cases n = 1,040 comprised those subjects with any cancer diagnosed between 2008 and 2010, registered at the Cancer Registry of Hospital Vall d-Hebron Barcelona. Three control subjects for each case n = 3,120 were matched by age, sex, diabetes duration, and geographical area. The treatments analyzed within 3 years prior to cancer diagnosis were: insulin glargine, insulin detemir, human insulin, fast-acting insulin and analogues, metformin, sulfonylureas, repaglinide, thiazolidinediones, dipeptidyl peptidase-4 inhibitors, and alpha glucosidase inhibitors. Conditional logistic regressions were used to calculate the risk of cancer associated with the use of each drug adjusted by age, BMI, dose and duration of treatment, alcohol use, smoking habit, and diabetes duration.


No differences were observed between case and control subjects for the proportion, dose or duration of exposure to each treatment. None of the types of insulin and oral agents analyzed showed a significant increase in the risk of cancer. Moreover, no cancer risk was observed when glargine was used alone or in combination with metformin.


Our results suggest that diabetes treatment does not influence the risk of cancer associated with type 2 diabetes. Therefore, an eventual increase of cancer should not be a reason for biasing the selection of any glucose-lowering treatment in type 2 diabetic population.

Autor: Rafael Simó , Oleguer Plana-Ripoll, Diana Puente, Rosa Morros, Xavier Mundet, Luz M. Vilca, Cristina Hernández, Inmaculada Fuen



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