Hypoglycaemia, irrespective of the definition used, is reduced when switching to insulin degludec from other basal insulins in routine clinical care : The ReFLeCT study

• Background and aims: ReFLeCT was a multicentre, prospective, observational study designed to investigate the safety and effectiveness of switching to insulin degludec (degludec) from other basal insulins in patients with type 1 (T1D) or type 2 diabetes (T2D). Few studies had prospectively collected hypoglycaemia data from patient diaries following a switch to degludec in everyday clinical practice. These additional analyses from the ReFLeCT study aimed to assess the effects of switching to degludec according to different hypoglycaemia definitions.Materials and methods: ReFLeCT comprised a 4-week baseline period (pre-switch basal insulin) and a 12-month follow-up period (degludec treatment). The primary endpoint of overall hypoglycaemia reported in patient diaries was reduced during follow-up vs baseline in T1D and T2D with improvement of glycaemic control, as previously reported. Here, hypoglycaemia data from ReFLeCT were analysed using pre-specified and updated (post hoc) American Diabetes Association (ADA) hypoglycaemia definitions. Definitions consisted of: documented asymptomatic and symptomatic, pseudo, probable symptomatic, and Level 1, 2 and 3 (severe) hypoglycaemia (Fig). Hypoglycaemic events were analysed using fully adjusted, negative binomial regression models.Results: In T1D (n=556) and T2D (n=611), estimated rate ratios across the previous and the updated ADA hypoglycaemia definitions were significantly lower during the 12-month follow-up vs the baseline period, except for asymptomatic hypoglycaemia in T1D and Level 3 hypoglycaemia in T2D (due to a low number of severe hypoglycaemic events, no comparable statistics were performed) (Fig). Event rates per patient year were also lower for all definitions during the 12-month follow-up vs the baseline period, except for Level 3 hypoglycaemia in T2D, which marginally increased, although this was likely due to the low number of events in this group.Conclusion: In patients with T1D and T2D, switching to degludec from other basal insulins in routine clinical care is associated with lower rates of hypoglycaemia across a broad range of hypoglycaemia definitions, in combination with improved glycaemic control.

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MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)

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