CLINICAL PHARMACOLOGY
Mechanism Of Action
Glucagon increases blood glucose concentration by
activating hepatic glucagon receptors, thereby stimulating glycogen breakdown
and release of glucose from the liver. Hepatic stores of glycogen are necessary
for glucagon to produce an antihypoglycemic effect.
Pharmacodynamics
After administration of BAQSIMI in adult patients with
diabetes, the mean maximum glucose increase from baseline was 140 mg/dL (Figure
1).
In pediatric patients with type 1 diabetes (4 to <17
years), the mean maximum glucose increase from baseline was 138 mg/dL (4 to
<8 years), 133 mg/dL (8 to <12 years), and 102 mg/dL (12 to <17 years)
(Figure 2).
Sex and body weight had no clinically meaningful effects
on the pharmacodynamics of BAQSIMI.
Common cold with nasal congestion tested with or without
use of decongestant did not impact pharmacodynamics of BAQSIMI.
Figure 1 : Mean glucose concentration over time after
glucagon dose in adult Type 1 Diabetes patients with insulin-induced
hypoglycemia.
Figure 2 : Mean glucose concentration over time in
pediatric Type 1 Diabetes patients administered BAQSIMI
Pharmacokinetics
Absorption
Glucagon absorption via the intranasal route, achieved
mean peak plasma levels of 6130 pg/mL at around 15 minutes.
Distribution
The apparent volume of distribution was approximately 885 L.
Elimination
The median half-life was approximately 35 minutes.
Metabolism
Glucagon is known to be degraded in the liver, kidneys,
and plasma.
Specific Populations
Pediatrics
In pediatric patients (4 to <17 years), glucagon via
the intranasal route, achieved mean peak plasma levels between 15 and 20
minutes. The median half-life was 21 to 31 minutes.
Patients With Colds
Common cold with nasal congestion did not impact the
pharmacokinetics of BAQSIMI.
Drug Interaction Studies
Common cold with use of decongestant did not impact the
pharmacokinetics of BAQSIMI.
Clinical Studies
Adult Patients
Study 1 (NCT03339453) was a randomized, multicenter,
open-label, 2-period, crossover study in adult patients with type 1 diabetes.
The efficacy of a single 3 mg dose of BAQSIMI was compared to a 1 mg dose of
intramuscular glucagon (IMG). Insulin was used to reduce blood glucose levels
to <60 mg/dL. Seventy patients were enrolled, with a mean age of 41.7 years
and a mean diabetes duration of 20.1 years. Twenty-seven (39%) were female.
The primary efficacy outcome measure was the proportion
of patients achieving treatment success, which was defined as either an
increase in blood glucose to ≥70 mg/dL or an increase of ≥20 mg/dL
from glucose nadir within 30 minutes after receiving study glucagon, without
receiving additional actions to increase the blood glucose level. Glucose nadir
was defined as the minimum glucose measurement at the time of, or within 10
minutes, following glucagon administration.
The mean nadir blood glucose was 54.5 mg/dL for BAQSIMI
and 55.8 mg/dL for IMG. BAQSIMI demonstrated non-inferiority to IMG in
reversing insulin-induced hypoglycemia with 100% of BAQSIMI-treated patients
and 100% of IMG-treated patients achieving treatment success. The mean time to
treatment success was 11.6 and 9.9 minutes in the BAQSIMI and IMG 1 mg
treatment groups, respectively.
Table 5: Adult Patients with Type 1 Diabetes Meeting
Treatment Success and Other Glucose Criteria in Study 1
|
Type 1 Diabetes
(N=66)a |
BAQSIMI 3 mg |
IMG 1 mg |
Treatment Success - n (%) |
66 (100%) |
66 (100%) |
Treatment Difference (2-sided 95% confidence limit)b, c |
0% (-2.9%, 2.9%) |
Glucose criterion met - n (%) |
(i) ≥70 mg/dL |
66 (100%) |
66 (100%) |
(ii) Increase by ≥20 mg/dL from nadir |
66 (100%) |
66 (100%) |
Both (i) and (ii) |
66 (100%) |
66 (100%) |
a The Efficacy Analysis Population consisted
of all patients who received both doses of the Study Drug with evaluable
primary outcome.
b Difference calculated as (percentage with success in BAQSIMI) â⬓
(percentage with success in IMG).
c 2-sided 95% confidence interval (CI) of paired differences using a
Wald-Min correction; non-inferiority margin = -10%. |
Study 2 (NCT01994746) was a randomized, multicenter,
open-label, 2-period, crossover study in adult patients with type 1 diabetes or
type 2 diabetes. The efficacy of a single 3 mg dose of BAQSIMI was compared to
a 1 mg dose of intra-muscular glucagon (IMG). Insulin was used to reduce blood
glucose levels to the hypoglycemic range with a target blood glucose nadir of
<50 mg/dL.
Study 2 enrolled 83 patients 18 to <65 years of age.
The mean age of patients with type 1 diabetes (N=77) was 32.9 years and a mean
diabetes duration of 18.1 years, and 45 (58%) patients were female. The mean
age of patients with type 2 diabetes (N=6) was 47.8 years, with a mean diabetes
duration of 18.8 years, and 4 (67%) patients were female.
The mean nadir blood glucose was 44.2 mg/dL for BAQSIMI
and 47.2 mg/dL for IMG. BAQSIMI demonstrated non-inferiority to IMG in
reversing insulin-induced hypoglycemia with 98.8% of BAQSIMI-treated patients
and 100% of IMG-treated patients achieving treatment success within 30 minutes.
The mean time to treatment success was 15.9 and 12.1
minutes in the BAQSIMI and IMG 1 mg treatment groups, respectively.
Table 6: Adult Patients with Type 1 and Type 2
Diabetes Meeting Treatment Success and Other Glucose Criteria in Study 2
|
BAQSIMI 3 mg |
IMG 1 mg |
Treatment Success - n (%) |
79 (98.8%) |
80 (100%) |
Treatment Difference (2-sided 95% confidence limit) b,c |
-1.3% (-4.6%, 2.2%) |
Glucose criterion met - n (%)d |
(i) ≥70 mg/dL |
77 (96%) |
79 (99%) |
(ii) Increase by ≥20 mg/dL from nadir |
79 (99%) |
80 (100%) |
Both (i) and (ii) |
77 (96%) |
79 (99%) |
a The Efficacy Analysis Population consisted
of all patients who received both doses of the Study Drug with evaluable
primary outcome.
b Difference calculated as (percentage with success in BAQSIMI) â⬓
(percentage with success in IMG).
c2-sided 95% confidence interval (CI) of paired differences using a
Wald-Min correction; non-inferiority margin = -10%.
d Percentage based on number of patients. |
Pediatric Patients
Study 3 (NCT01997411) was a randomized, multicenter,
clinical study that assessed BAQSIMI compared to intramuscular glucagon (IMG)
in pediatric patients aged 4 years and older with type 1 diabetes. Insulin was
used to reduce blood glucose levels, and glucagon was administered after
glucose reached <80 mg/dL. Efficacy was assessed based on percentage of
patients with a glucose increase of ≥20 mg/dL from glucose nadir within
30 minutes following BAQSIMI administration.
Forty-eight patients were enrolled and received at least
one dose of study drug. The mean age in the Young Children cohort (4 to <8
years) was 6.5 years. In the Children cohort (8 to <12 years), mean age was
11.1 years and in the Adolescents cohort (12 to <17 years) mean age was 14.6
years. In all age cohorts, the population was predominantly male and white.
Across all age groups, all (100%) patients in both
treatment arms achieved an increase in glucose ≥20 mg/dL from glucose
nadir within 20 minutes of glucagon administration. The mean time to reach a
glucose increase of ≥20 mg/dL for BAQSIMI and IMG for all age groups is
shown in Table 7.
Table 7: Mean Time to Reach Glucose Increase of
≥20 mg/dL from Nadir in Pediatric Patients with Type 1 Diabetes in Study
3
Increase from Nadir |
Mean Time Post-Glucagon Administration (minutes) |
Young Children (4 to <8 years old) |
Children (8 to <12 years old) |
Adolescents (12 to <17 years old) |
IMGa
N=6 |
BAQSIMI 3 mg
N=12 |
IMGa
N=6 |
BAQSIMI 3 mg
N=12 |
IMGa
N=12 |
BAQSIMI 3 mg
N=12 |
≥20 mg/dL |
10.8 |
10.8 |
12.5 |
11.3 |
12.5 |
14.2 |