PMID- 23782896 OWN - NLM STAT- MEDLINE DCOM- 20150330 LR - 20211021 IS - 1745-6215 (Electronic) IS - 1745-6215 (Linking) VI - 14 DP - 2013 Jun 20 TI - DiaSurg 2 trial--surgical vs. medical treatment of insulin-dependent type 2 diabetes mellitus in patients with a body mass index between 26 and 35 kg/m2: study protocol of a randomized controlled multicenter trial--DRKS00004550. PG - 183 LID - 10.1186/1745-6215-14-183 [doi] AB - BACKGROUND: Type 2 diabetes mellitus (T2DM) is a disease with high prevalence, associated with severe co-morbidities as well as being a huge burden on public health. It is known that glycemic control decreases long-term morbidity and mortality. The current standard therapy for T2DM is medical treatment. Several randomized controlled trials (RCTs) performed in obese patients showed remission of T2DM after bariatric surgery. Recent RCTs have shown bariatric procedures to produce a similar effect in non-morbidly and non-severely obese, insulin-dependent T2DM patients suggesting procedures currently used in bariatric surgery as new therapeutical approach in patients with T2DM. This study aims at investigating whether Roux-en-Y gastric bypass (RYGB) is an efficient treatment for non-severely obese T2DM patients in terms of preventing long-term complications and mortality. METHODS: The DiaSurg 2 trial is a multicenter, open randomized controlled trial comparing RYGB including standardized medical treatment if needed to exclusive standardized medical treatment of T2DM (control group). The primary endpoint is a composite time-to-event endpoint (cardiovascular death, myocardial infarction, coronary bypass, percutaneous coronary intervention, non-fatal stroke, amputation, surgery for peripheral atherosclerotic artery disease), with a follow-up period of 8 years. Insulin-dependent T2DM patients aged between 30 and 65 years will be included and randomly assigned to one of the two groups. The experimental group will receive RYGB and, if needed, standardized medical care, whereas the control group will receive exclusive standardized medical care, both according to the national treatment guidelines for T2DM. Statistical analysis is based on Cox proportional hazards regression for the intention-to-treat population. Assuming a loss to follow-up rate of 20%, 200 patients will be randomly allocated to the comparison groups. A total sample size of n=400 is sufficient to ensure 80% power in a two-tailed significance test at alpha=5%. DISCUSSION: The DiaSurg2 trial will yield long-term data (8 years) on diabetes-associated morbidity and mortality in patients with insulin-dependent T2DM receiving either RYGB or standardized medical care. TRIAL REGISTRATION: The trial protocol has been registered in the German Clinical Trials Register DRKS00004550. FAU - Kenngott, Hannes G AU - Kenngott HG FAU - Clemens, Gabriella AU - Clemens G FAU - Gondan, Matthias AU - Gondan M FAU - Senft, Jonas AU - Senft J FAU - Diener, Markus K AU - Diener MK FAU - Rudofsky, Gottfried AU - Rudofsky G FAU - Nawroth, Peter P AU - Nawroth PP FAU - Buchler, Markus W AU - Buchler MW FAU - Fischer, Lars AU - Fischer L FAU - Muller-Stich, Beat P AU - Muller-Stich BP LA - eng SI - DRKS/DRKS00004550 PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20130620 PL - England TA - Trials JT - Trials JID - 101263253 RN - 0 (Hypoglycemic Agents) SB - IM MH - Adult MH - Aged MH - Anastomosis, Roux-en-Y MH - *Body Mass Index MH - Clinical Protocols MH - Diabetes Mellitus, Type 2/blood/diagnosis/mortality/*therapy MH - Disease Progression MH - Female MH - *Gastric Bypass MH - Germany MH - Humans MH - Hypoglycemic Agents/*therapeutic use MH - Intention to Treat Analysis MH - Male MH - Middle Aged MH - Obesity/complications/diagnosis/mortality/*surgery MH - Proportional Hazards Models MH - *Research Design MH - Risk Factors MH - Sample Size MH - Time Factors MH - Treatment Outcome MH - Weight Loss PMC - PMC3694456 EDAT- 2013/06/21 06:00 MHDA- 2015/03/31 06:00 PMCR- 2013/06/20 CRDT- 2013/06/21 06:00 PHST- 2012/12/13 00:00 [received] PHST- 2013/06/04 00:00 [accepted] PHST- 2013/06/21 06:00 [entrez] PHST- 2013/06/21 06:00 [pubmed] PHST- 2015/03/31 06:00 [medline] PHST- 2013/06/20 00:00 [pmc-release] AID - 1745-6215-14-183 [pii] AID - 10.1186/1745-6215-14-183 [doi] PST - epublish SO - Trials. 2013 Jun 20;14:183. doi: 10.1186/1745-6215-14-183.