Conditions: Diabetes Mellitus, Type 1
Allocation: RANDOMIZED | Intervention model: CROSSOVER
Enrollment: 48
Healthy volunteers: no

Brief summary:
The purpose of this study was to assess how glucagon administered nasally, using a nasal dosing delivery device, works in children and adolescents compared with commercially-available glucagon given by injection. In addition, the safety and tolerability of glucagon given nasally was evaluated.

Detailed description:
This study was conducted to permit determination of appropriate dose level(s) for pediatric use based on the safety observations and results of glucagon and glucose assays.

Each participant 12 to less than 17 years of age underwent two visits in random order and received glucagon nasal powder once and commercially available glucagon (GlucaGen, Novo Nordisk) by intramuscular (IM) injection once. Participants 4 to less than 12 years were randomly assigned to have either 1 visit with commercially available glucagon (GlucaGen, Novo Nordisk) by IM injection OR to have 2 visits with a 2.0 milligram (mg) dose of glucagon nasal powder administered during one visit and a 3.0 mg dose of glucagon nasal powder administered during the other visit. For those randomized to complete two research dosing visits, the dose of glucagon nasal powder given during each visit was masked to the participant and study personnel.

Glucagon was administered after glucose was lowered to \<80 mg/dL using insulin if necessary on the dosing day. Participants were treated with either glucagon given nasally (either 2.0 mg or 3.0 mg for participants 4 to less than 12 years of age or 3.0 mg for those 12 to less than 17 years of age) or by intramuscular (IM) injection (1 mg for those 55 pounds \[lbs\] or more and 0.5 mg for those weighing less than 55 lbs) in the quadriceps muscle of the leg.

Blood glucose levels and adverse events were carefully monitored for 90 minutes post-dosing. After a wash-out period of 7 days or more, participants 12 to less than 17 years of age returned to the clinic and the procedure was repeated with each participant crossed over to the other treatment. Participants 4 to less than 12 years assigned to have 2 dosing visits returned to clinic for repeated procedures and received alternate dose of nasal glucagon (NG). Participants 4 to less than 12 years assigned to a single dosing visit did not return for a second dosing visit.

Arms:
arm 1: Nasal glucagon (NG) doses of 2.0 mg and 3.0 mg for participants 4 to less than 12 years of age and 3.0 mg for those 12 to less than 17 years of age were administered in a nostril with a prefilled delivery device that delivered a single dose upon activation. arm 2: Participants who weighed at least 25 kilograms (kg)/55 pounds (lbs) were dosed 1 mg of IM glucagon; participants who weighed less than 25 kg/55 lbs, IM glucagon dosed with 0.5 mg

Interventions: intervention 1: Nasal Glucagon intervention 2: Intramuscular Glucagon
Intervention descriptions: intervention 1: None intervention 2: None

Protocol document: