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DSS: Diabetes Surgery Study - Intensive Medical Management of Type 2 Diabetes, With and Without Gastric Bypass Surgery (DSS)

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
Medtronic - MITG Identifier:
First received: February 13, 2008
Last updated: April 21, 2017
Last verified: April 2017
The present study is the first stage of a research program whose ultimate goal is to conduct a randomized clinical trial involving type 2 diabetics with BMI from 30.0 to 39.9 kg/m2. This program will determine the relative effectiveness of RYGB combined with intensive medical management (IMM), versus IMM alone, in reducing CVD event rates and mortality in patients with poorly controlled diabetes. IMM will include rigorous lifestyle modification for weight loss and stepped pharmacologic treatment for diabetes and other CVD risk factors. The proposed study is a randomized trial which will provide an assessment of the efficacy of treatment, in reducing CVD risk factors and also assessing the feasibility, cost, and safety of a larger trial.

Condition Intervention Phase
Type 2 Diabetes
Cardiovascular Disease
Other: intensive medical management
Other: RYGB & IMM
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: No masking
Primary Purpose: Treatment
Official Title: Global Randomized Prospective Study of Intensive Medical Management of Type 2 Diabetes, With and Without Gastric Bypass Surgery

Further study details as provided by Medtronic - MITG:

Primary Outcome Measures:
  • HbA1c < 7.0% [ Time Frame: 12 Months ]
  • Systolic blood pressure < 130 mm Hg [ Time Frame: 12 Months ]
  • LDL cholesterol < 100 mg/dl [ Time Frame: 12 Months ]

Enrollment: 120
Study Start Date: February 2008
Estimated Study Completion Date: June 2017
Primary Completion Date: January 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1
intensive medical management
Other: intensive medical management
IMM will include rigorous lifestyle modification for weight loss and stepped pharmacologic treatment consistent with standard of care for diabetes and other CVD risk factors.
Active Comparator: 2
Roux-en-Y gastric bypass with intensive medical management
Other: RYGB & IMM
Roux-en-Y gastric bypass Surgery combined with intensive medical management


Ages Eligible for Study:   30 Years to 67 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Age 30 to 67 years at eligibility visit.
  2. Diagnosed with T2DM at least 6 months prior to enrollment, under the active care of a doctor for at least the six months prior to enrollment, and HbA1c ≥ 8.0 %.
  3. Body Mass Index (BMI) ≥ 30.0 kg/m2 and ≤ 39.9 kg/m2 at eligibility visit.
  4. Willingness to accept random assignment to either treatment group.
  5. Expect to live or work within approximately one hour's traveling time from the study clinic for the duration of the two-year trial.
  6. Willingness to comply with the follow-up protocol and successful completion of the run-in (described below).
  7. Written informed consent.

Exclusion Criteria:

  1. Cardiovascular event (myocardial infarction, acute coronary syndrome, coronary artery angioplasty or bypass, stroke) in the past six months.
  2. Current evidence of congestive heart failure, angina pectoris, or symptomatic peripheral vascular disease.
  3. Cardiac stress test indicating that surgery or IMM would not be safe.
  4. Pulmonary embolus or thrombophlebitis in the past six months.
  5. Cancer of any kind (except basal cell skin cancer or cancer in situ) unless documented to be disease-free for five years.
  6. Significant anemia (hemoglobin 1.0 g or more below normal range) or history of coagulopathy.
  7. Serum creatinine ≥ 1.5 mg/dl.
  8. HbA1c > 14.0%.
  Contacts and Locations
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Please refer to this study by its identifier: NCT00641251

United States, Minnesota
University of Minnesota
Minneapolis, Minnesota, United States, 55414
Mayo Clinic
Rochester, Minnesota, United States, 55905
United States, New York
Columbia University
New York, New York, United States, 10032
Min-Sheng General Hospital
Taipei, Taiwan
National Taiwan University Hospital
Taipei, Taiwan
Sponsors and Collaborators
Medtronic - MITG
Principal Investigator: Sayeed Ikramuddin, MD University of Minnesota - Clinical and Translational Science Institute
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Medtronic - MITG Identifier: NCT00641251     History of Changes
Other Study ID Numbers: AS07008
Study First Received: February 13, 2008
Last Updated: April 21, 2017

Keywords provided by Medtronic - MITG:
T2 Diabetes
Type 2 diabetes CVD event rates and mortality

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 2
Cardiovascular Diseases
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases processed this record on May 23, 2017