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  • Title: Treatment patterns and outcomes before and after human regular U-500 insulin initiation via KwikPen® among US veterans with type 2 diabetes mellitus.
    Author: Chen J, Borra S, Fan L, Huang A, Patel D, Juneja R.
    Journal: J Diabetes Complications; 2021 Oct; 35(10):107995. PubMed ID: 34364779.
    Abstract:
    INTRODUCTION: A dedicated Humulin R U-500 (U-500R) prefilled disposable insulin pen (KwikPen) became available in 2016, yet limited evidence exists on treatment patterns and outcomes of U-500R via KwikPen (U500-KP). METHODS: This is a retrospective observational study among adults with ≥2 claims for type 2 diabetes initiating U500-KP (index date: first claim) identified in Veterans Health Administration database. Treatment patterns and outcomes were evaluated in 9-month pre- and post-index periods, including dispensed total daily insulin dosage derived from claims expressed in units (dTDD) and units/kg, HbA1c, symptomatic hypoglycemia, and body weight. Multivariable modeling was used to confirm the associations between U500-KP initiation and outcomes. RESULTS: A total of 647 U500-KP initiators were identified. The mean age was 64 years, and mean Quan-Charlson Comorbidity-index score was 3.8. Before U500-KP initiation, 62% of patients had dTDD ≤ 200 units with mean A1c 9.5%. Mean dTDD increased from 188.2 to 269.9 units after U500-KP initiation with mean A1c decreased by 0.83% (SD = 1.67) and mean weight gain of 1.5 kg (SD = 6.74). Hypoglycemia events increased from 4.3 to 5.3 (p < 0.05) per person per year. CONCLUSIONS: Initiation of U500-KP brought significant improvement in dispensed insulin dose and glycemic control accompanied by moderate increases in hypoglycemia and weight.
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