SEMAGLUTIDE VERSUS GLP-1 RECEPTOR AGONISTS. EFFECTIVENESS , SAFETY AND QUALITY OF LIFE IN PATIENTS WITH DIABETES MELLITUS 2. OBSERVATIONAL, PROSPECTIVE AND MULTICENTER STUDY. SEVERAL STUDY.

Introduction: GLP-1 receptor agonists (aGLP1) act increasing pancreatic insulin secretion in response to the glucose, they reduce glucagon secretion and reduce appetite by acting in the central level. Several aGLP1 were approved through different clinical trials where they showed efficacy in the glycemic control and reduction in cardiovascular events. They also showed weight loss in different clinical trials with patients with diabetes mellitus 2 (DM2) and also in specific clinical trial where the weight loss was the primary endpoint (STEP study). Objective: The objective is to evaluate and compare the weight loss in patients with DM2 treated with the different aGLP1 for the first time. Secondary endpoints are HbA1c reduction, changes in quality of life and physical activity and the safety of these drugs. Design: It is a postauthorization, multicenter, non-randomized and prospective study. Patients that will start treatment for the first time with aGLP1 will be recruited in 10 primary care centers in SERGAS Galician Hospitals for a period of 6 months and 44 weeks of follow-up. The primary endpoint will be to evaluate the wight loss with the different aGLP1 and the secondary endpoint will be HbA1c reduction, changes in the quality of life through the EuroQol-5D and changes physical activity through the SF-12 questionnaire, and also the safety of these drugs. The sample size will be of 360 patients. Statistical analysis: Previous studies showed efficacy in weight loss with semaglutide about (3,6-4,9 kg), while with other aGLP1 the weight loss was smaller , about (0,86-2,96 kg). Based in these data and with a 5% of significance level, a weight loss average in the aGLP1 group of 2,5 kg, average in semaglutide group of 4,2 kg, and combination deviation of 3,0kg, including 360 subjects we will have a statistical power above 90% to detect differences through T-test for independent samples. The justification of this simple size was performed with the statistical so