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  • Title: PROTECT interim results: a large multicenter study of patients with type II diabetes. Precose Resolution of Optimal Titration to Enhance Current Therapies.
    Author: Baron A, Neumann C.
    Journal: Clin Ther; 1997; 19(2):282-95. PubMed ID: 9152567.
    Abstract:
    The Precose Resolution of Optimal Titration to Enhance Current Therapies (PROTECT) study is an ongoing Phase IV clinical trial designed to assess the effectiveness, tolerability, and safety of acarbose tablets in patients with type II diabetes when the dosage is slowly titrated upward. This multicenter, open-label, 28-week trial will enroll approximately 7,000 type II diabetic patients. The present report describes the interim results for 2,139 patients who completed the trial as of November 1, 1996. Patients with type II diabetes enrolled in the study were inadequately controlled either with diet alone or with a sulfonylurea. The dosage of acarbose was titrated from 25 mg three times a day (TID) to 100 mg TID based on tolerability and efficacy. Efficacy of glycemic control was assessed by changes in glycated hemoglobin A1c (Hb A1c) and 1-hour postprandial plasma glucose (PPG) levels. Tolerability and safety were determined by patient reports of treatment-emergent adverse events and by review of laboratory tests. The PROTECT study confirms the previously demonstrated efficacy and safety of acarbose in improving glycemic control in patients with type II diabetes regardless of a patient's age, body weight, ethnic background, time since diagnosis, or severity of disease. mean 1-hour PPG levels declined throughout the entire treatment period, with a mean decrease from baseline of -47 mg/dL at the end of treatment. Hb A1c, the most reliable indicator of long-term glycemic control, decreased over the course of treatment, resulting in a mean decrease of -0.7% (P < 0.001). Although all patient types enrolled in the study responded positively to therapy, certain subgroups responded particularly well, such as those patients diagnosed with the disease less than 1 year ago, those treated with acarbose as monotherapy, and those with higher baseline Hb A1c levels. Adverse events were experienced by 36% of all patients and consisted primarily of gastrointestinal disturbances (flatulence, diarrhea, abdominal pain). Moderate renal insufficiency (serum creatinine levels between 1.5 and 2 mg/dL) was present in 259 patients, and no patients developed serum hepatic transaminase levels more than twice the normal range.
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