Diabetes Care 24:1226-1232, 2001
© 2001 by the American Diabetes Association, Inc.
Emerging Treatments and Technologies Original Article |
A Randomized Trial of Rosiglitazone Therapy in Patients With Inadequately Controlled Insulin-Treated Type 2 Diabetes
Philip Raskin, MD1,
Marc Rendell, MD2,
Matthew C. Riddle, MD3,
Jo F. Dole, PHD4,
Martin I. Freed, MD4,
Julio Rosenstock, MD5 and
For the Rosiglitazone Clinical Trials Study Group
1 University of Texas Southwestern Medical Center at Dallas, Dallas, Texas
2 Creighton University, Omaha, Nebraska
3 Oregon Health Sciences University, Portland, Oregon
4 SmithKline Beecham Pharmaceuticals, Collegeville, Pennsylvania
5 Dallas Diabetes and Endocrine Center, Dallas, Texas
OBJECTIVETo determine the efficacy and safety of rosiglitazone (RSG) when added to insulin in the treatment of type 2 diabetic patients who are inadequately controlled on insulin monotherapy.
RESEARCH DESIGN AND METHODSAfter 8 weeks of insulin standardization and placebo (PBO) run-in, 319 type 2 diabetic patients with mean baseline HbA1c 7.5% (8.9 ± 1.1 to 9.1 ± 1.3) on twice-daily insulin therapy (total daily dose 30 U) were randomized to 26 weeks of additional treatment with RSG (4 or 8 mg daily) or PBO. Insulin dose could be down- titrated only for safety reasons. The primary end point was reduction of HbA1c from baseline.
RESULTSRSG 4 and 8 mg daily significantly improved glycemic control, which was unchanged on PBO. By intent-to-treat analysis, treatment with RSG 8 mg plus insulin resulted in a mean reduction from baseline in HbA1c of 1.2% (P < 0.0001), despite a 12% mean reduction of insulin dosage. Over 50% of subjects treated daily with RSG 8 mg plus insulin had a reduction of HbA1c 1.0%. Neither total:HDL cholesterol nor LDL:HDL cholesterol ratios significantly changed with RSG treatment. Serious adverse events did not differ among groups.
CONCLUSIONSThe addition of RSG to insulin treatment results in significant improvement in glycemic control and is generally well tolerated.
Abbreviations: AE, adverse event ALT, alanine aminotransferase AST, aspartate aminotransferase BP, blood pressure CHF, congestive heart failure FPG, fasting plasma glucose I, insulin PBO, placebo RSG, rosiglitazone TZD, thiazolidinedione UKPDS, U.K. Prospective Diabetes Study WHR, waist-to-hip ratio

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Copyright © 2001 by the American Diabetes Association.
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