Abstract
INTRODUCTION: Long-acting insulin analogs such as insulin glargine may offer improved glycemic control in patients with type 2 diabetes (T2D) compared to conventional insulin therapies. The objective of this study was to determine whether switching to insulin glargine had beneficial effects on glycemic control, weight gain, and incidence of hypoglycemia in patients with suboptimally managed T2D. METHODS: This prospective observational study was performed on 1041 patients who were suboptimally controlled on pre-mixed insulin therapy and were switched to an insulin glargine regimen. Clinical markers of glycemic control including glycosylated hemoglobin (HbA1c) < 7% (< 53 mmol/mol) and fasting blood glucose (FBG) levels ranging from 3.9 to 7.2 mmol/L were used for the primary outcome measures. Follow-up assessment of primary outcomes, weight gain, incidence of hypoglycemia, and patient satisfaction with the therapy was performed after three and six months of treatment. RESULTS: Target therapeutic values of HbA1c were achieved in 9.3% and 30.2% of patients, whereas FBG target values were achieved in 25.9% and 52.3% of patients after the third and sixth month of therapy, respectively. Both the HbA1c and FBG targets were reached in 7% and 25.9% of patients at the third and sixth month of therapy, respectively. Switching to insulin glargine decreased the incidence of hypoglycemia from 49.5% to 5.2% after six months of therapy; this decrease was associated with weight loss and was well perceived by the patients. CONCLUSION: Insulin glargine-based regimens are beneficial and safe therapeutic alternatives for T2D patients inadequately controlled with pre-mixed insulin. FUNDING: Sanofi-Aventis Croatia d.o.o., Zagreb, Croatia.