Muhammad Amer

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Systematic review: comparative effectiveness and safety of premixed insulin analogues in type 2 diabetes.

Rehan Qayyum; Shari Bolen; Nisa Maruthur; Leonard Feldman; Lisa M Wilson; Spyridon S Marinopoulos; Padmini Ranasinghe; Muhammed Amer; Eric B Bass (Profiled Authors: Padmini Ranasinghe; Nisa Maruthur; Rehan Qayyum; Shari Bolen; Leonard Feldman; Spyridon Marinopoulos; Eric Bass; Muhammad Amer)

Evidence-based Practice Center, Johns Hopkins University, Baltimore, Maryland, USA. rqayyum@jhmi.edu
Annals of internal medicine 2008;149(8):549-59.

BACKGROUND: Evidence comparing premixed insulin analogues (a mixture of rapid-acting and intermediate-acting insulin analogues) with other antidiabetic agents is urgently required to guide appropriate therapy. PURPOSE: To summarize the English-language literature on the effectiveness and safety of premixed insulin analogues compared with other antidiabetic agents in adults with type 2 diabetes. DATA SOURCES: The authors searched MEDLINE, EMBASE, CINAHL, and the Cochrane Central Register of Controlled Trials from inception to February 2008 and sought unpublished data from the U.S. Food and Drug Administration, European Medicines Agency, and industry. STUDY SELECTION: Studies with control groups that compared premixed insulin analogues with another antidiabetic medication in adults with type 2 diabetes. DATA EXTRACTION: 2 reviewers using standardized protocols performed serial abstraction. DATA SYNTHESIS: Evidence from clinical trials was inconclusive for clinical outcomes, such as mortality. Therefore, the review focused on intermediate outcomes. Premixed insulin analogues were similar to premixed human insulin in decreasing fasting glucose levels, hemoglobin A(1c) levels, and the incidence of hypoglycemia but were more effective in decreasing postprandial glucose levels (mean difference, -1.1 mmol/L; 95% CI, -1.4 to -0.7 mmol/L [-19.2 mg/dL; 95% CI, -25.9 to -12.5 mg/dL]). Compared with long-acting insulin analogues, premixed insulin analogues were superior in decreasing postprandial glucose levels (mean difference, -1.5 mmol/L; CI, -1.9 to -1.2 mmol/L [-27.9 mg/dL; CI, -34.3 to -21.5 mg/dL]) and hemoglobin A(1c) levels (mean difference, -0.39% [CI, -0.50% to -0.28%]) but were inferior in decreasing fasting glucose levels (mean difference, 0.7 mmol/L; CI, 0.3 to 1.0 mmol/L [12.0 mg/dL; CI, 6.0 to 18.1 mg/dL]) and were associated with a higher incidence of hypoglycemia. Compared with noninsulin antidiabetic agents, premixed insulin analogues were more effective in decreasing fasting glucose levels (mean difference, -1.1 mmol/L; CI, -1.7 to -0.6 mmol/L [-20.5 mg/dL; CI, -29.9 to -11.2 mg/dL]), postprandial glucose levels (mean difference, -2.1 mmol/L; CI, -3.4 to -0.8 mmol/L [-37.4 mg/dL; CI, -61.0 to -13.7 mg/dL]), and hemoglobin A(1c) levels (mean difference, -0.49% [CI, -0.86% to -0.12%]) but were associated with a higher incidence of hypoglycemia. LIMITATIONS: The literature search was restricted to studies published in English. Data on clinical outcomes were limited. The small number of studies for each comparison limited assessment of between-study heterogeneity. CONCLUSION: Premixed insulin analogues provide glycemic control similar to that of premixed human insulin and may provide tighter glycemic control than long-acting insulin analogues and noninsulin antidiabetic agents.

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