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JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL
RESEARCH SUPPORT, NON-U.S. GOV'T
Insulin degludec/insulin aspart produces a dose-proportional glucose-lowering effect in subjects with type 1 diabetes mellitus.
Diabetes, Obesity & Metabolism 2015 July
AIMS: To evaluate the pharmacodynamic dose-response relationship of insulin degludec/insulin aspart (IDegAsp), a novel, soluble co-formulation of the ultra-long-acting basal insulin, insulin degludec (IDeg), with the rapid-acting prandial insulin (IAsp), across different doses in patients with type 1 diabetes (T1DM).
METHODS: This was a randomized, single-centre, double-blind, four-period, incomplete block, crossover trial. A cohort of 33 people with T1DM received single doses (0.4, 0.6 or 0.8 U/kg) of IDegAsp or the comparator, biphasic insulin aspart 30, in a randomized sequence of four treatment periods, each separated by a washout of 13-21 days. Pharmacodynamic response was assessed using a 26-h euglycaemic glucose clamp, with blood glucose stabilized at a target of 5.5 mmol/l (100 mg/dl).
RESULTS: A rapid onset of action and a distinct peak attributable to IAsp was observed in the glucose infusion rate (GIR) profile, followed by a separate, flat and stable basal glucose-lowering effect attributable to the IDeg component. The mean area under the GIR curve over 24 h (AUC(GIR,0-24 h)), and the mean maximum GIR (GIR(max)) increased with increasing dose level of IDegAsp. A dose-response relationship for IDegAsp was demonstrated for AUC(GIR,0-24 h) and GIR(max), indicating dose proportionality. A dose-concentration relationship was also observed for both the basal and bolus components of IDegAsp.
CONCLUSIONS: IDegAsp has a clear dose-response relationship, indicating the clinical potential for straightforward titration according to individual patient needs.
METHODS: This was a randomized, single-centre, double-blind, four-period, incomplete block, crossover trial. A cohort of 33 people with T1DM received single doses (0.4, 0.6 or 0.8 U/kg) of IDegAsp or the comparator, biphasic insulin aspart 30, in a randomized sequence of four treatment periods, each separated by a washout of 13-21 days. Pharmacodynamic response was assessed using a 26-h euglycaemic glucose clamp, with blood glucose stabilized at a target of 5.5 mmol/l (100 mg/dl).
RESULTS: A rapid onset of action and a distinct peak attributable to IAsp was observed in the glucose infusion rate (GIR) profile, followed by a separate, flat and stable basal glucose-lowering effect attributable to the IDeg component. The mean area under the GIR curve over 24 h (AUC(GIR,0-24 h)), and the mean maximum GIR (GIR(max)) increased with increasing dose level of IDegAsp. A dose-response relationship for IDegAsp was demonstrated for AUC(GIR,0-24 h) and GIR(max), indicating dose proportionality. A dose-concentration relationship was also observed for both the basal and bolus components of IDegAsp.
CONCLUSIONS: IDegAsp has a clear dose-response relationship, indicating the clinical potential for straightforward titration according to individual patient needs.
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