Ultra rapid lispro showed greater reduction in postprandial glucose versus Humalog in children, adolescents and adults with type 1 diabetes mellitus.

Aim: This study compared the pharmacokinetics, glucodynamics and tolerability following single subcutaneous doses of ultra rapid lispro (URLi) versus Humalog in children (6-11 years), adolescents (12-17 years) and adults (18-64 years) with type 1 diabetes mellitus (T1D).

Materials And Methods: The study was a randomized, two-period, subject- and investigator-blind, crossover design in participants with T1D. Participants received a 0.2 U/kg bolus dose immediately before a liquid mixed meal tolerance test. Insulin lispro and glucose concentrations were measured.

Results: The study included 13 children, 14 adolescents and 15 adults. Consistently across the age groups, onset of appearance was 4-5 min faster, the early 50% t was reduced by 7-13 min, and exposure in the first 15 min was increased by 3.5-6.5-fold following URLi compared with Humalog (all p < .01). Exposure after 3 h was decreased by 37-58% (p = .02) and the duration was reduced by 56 min (p = .006) in children and 36 min (p = .022) in adolescents with URLi compared with Humalog. The maximum and overall exposure were similar between treatments. Postprandial glucose at 1 h was reduced by 42 mg/dl in children (p = .008), 19 mg/dl (p = .195) in adolescents and 34 mg/dl (p = .018) in adults following URLi versus Humalog. The glucose excursion during a 5-h test meal period was reduced by 16% in children and 9% in adolescents compared with Humalog. URLi was well tolerated in all age groups.

Conclusions: URLi showed an accelerated insulin lispro absorption and greater postprandial glucose reduction compared with Humalog in children, adolescents and adults with T1D.