title: Effects of once-daily sitagliptin on 24-h glucose control following 4 weeks of treatment in Japanese patients with type 2 diabetes mellitus.
abstract: The aim of the study was to assess the efficacy/safety of once- (100 mg q.d.) or twice-daily (50 mg b.i.d.) sitagliptin 100 mg/day in Japanese patients with type 2 diabetes (T2DM). In this randomized, double-blind study, 80 patients with inadequate glycemic control (HbA1c=6.5-10%; FPG </=15.0 mmol/l) were randomized equally to sitagliptin 100 mg q.d., 50 mg b.i.d. or placebo for 4 weeks. At baseline and Week 4, frequent blood sampling was performed to assess 24-h weighted mean glucose (24-h WMG). Patients in the efficacy analyses (n=76) had a mean baseline HbA1c of 7.7%. At Week 4, least-squares mean changes in 24-h WMG were reduced with sitagliptin 100 mg q.d. and 50 mg b.i.d. versus placebo (-1.9, -1.6, and -0.5 mmol/l, respectively; p<0.001). Sitagliptin significantly improved FPG and 2-h PPG compared to placebo. No significant differences in 24-h WMG, FPG, or 2-h PPG were observed between the sitagliptin groups. Sitagliptin was well tolerated with no hypoglycemic events. In Japanese patients with T2DM, sitagliptin 100 mg/day provided substantial and continuous 24-h glucose-lowering over 4 weeks. The same glucose-lowering efficacy and tolerability were observed with sitagliptin 100 mg/day whether administered as a once-daily or twice-daily regimen. These results support a once-daily dosing regimen in Japanese patients with T2DM.
authors.affiliation: Banyu Pharmaceutical Co., Tokyo, Japan. yukako_fukao@merck.com
authors.forename: K
authors.initials: K
authors.lastname: Nonaka
authors.forename: H
authors.initials: H
authors.lastname: Tsubouchi
authors.forename: K
authors.initials: K
authors.lastname: Okuyama
authors.forename: Y
authors.initials: Y
authors.lastname: Fukao
authors.forename: A O
authors.initials: AO
authors.lastname: Johnson-Levonas
authors.forename: J M
authors.initials: JM
authors.lastname: Amatruda
mesh_terms: D000328:Adult; D000368:Aged; D001786:Blood Glucose / Q000187:drug effects / Q000378:metabolism*; D003924:Diabetes Mellitus, Type 2 / Q000097:blood* / Q000188:drug therapy*; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004361:Drug Tolerance; D006442:Glycated Hemoglobin / Q000378:metabolism; D006801:Humans; D007004:Hypoglycemic Agents / Q000627:therapeutic use* / Q000633:toxicity; D007564:Japan; D008875:Middle Aged; D018579:Patient Selection; D010919:Placebos; D011719:Pyrazines / Q000627:therapeutic use* / Q000633:toxicity; D000068900:Sitagliptin Phosphate; D014230:Triazoles / Q000627:therapeutic use* / Q000633:toxicity; D055815:Young Adult
chemical_list: D001786:Blood Glucose; D006442:Glycated Hemoglobin; D007004:Hypoglycemic Agents; D010919:Placebos; D011719:Pyrazines; D000068900:Sitagliptin Phosphate; D014230:Triazoles