ADHD Studies in Pediatric Patients
The efficacy of Qelbree in the treatment of ADHD in pediatric patients 6 to 17 years of age was evaluated in three short-term, randomized, placebo-controlled monotherapy trials (Studies 1, 2, and 3).
Study 1 (NCT03247530) was a multicenter, randomized, double-blind, three-arm placebo-controlled, parallel group monotherapy trial in patients 6 to 11 years of age with ADHD. Total duration of treatment was 6 weeks, including a 1-week titration period (starting at 100 mg once daily) and 5-week maintenance phase. Patients were randomized to receive 100 mg, 200 mg, or placebo, given once daily as a single dose. The primary endpoint was the change from baseline to the end of study on the total score on the ADHD Rating Scale (ADHD-RS-5), an 18-question scale that assesses hyperactivity, impulsivity, and inattentive symptoms. Higher ADHD-RS-5 scores reflect more severe symptoms. The Clinical Global Impression-Improvement (CGI-I) score at the end of the study was a secondary endpoint.
A total of 477 patients were randomized in Study 1; 399 completed the study, and 78 discontinued. The change from baseline (reduction) in ADHD-RS-5 total score was statistically significantly greater in patients treated with Qelbree 100 mg or with Qelbree 200 mg than in patients on placebo (see
Table 4). Compared with patients on placebo, a statistically significantly greater reduction (improvement) in CGI-I score at the end of the study was observed both in patients treated with Qelbree 100 mg and in patients treated with Qelbree 200 mg.
Study 2 (NCT03247543) was a multicenter, randomized, double-blind, three-arm, placebo-controlled, parallel-group monotherapy trial in patients 6 to 11 years of age with ADHD. Total duration of treatment was 8 weeks, including a 3-week titration period (starting at 100 mg once daily), and a 5-week maintenance phase. Patients were randomized to receive Qelbree 200 mg, Qelbree 400 mg, or placebo, given once daily as a single dose. The primary endpoint was the change from baseline to the end of study on the total score on the ADHD Rating Scale (ADHD-RS-5). The Clinical Global Impression-Improvement (CGI-I) score at the end of the study was a secondary endpoint.
A total of 313 patients were randomized in Study 2; 251 completed the study, and 62 discontinued. The change from baseline (reduction) in ADHD-RS-5 total score was statistically significantly greater in patients treated with Qelbree 200 mg or with Qelbree 400 mg than in patients on placebo (see
Table 4). Compared with patients on placebo, a statistically significantly greater reduction (improvement) in CGI-I score at the end of the study was observed both in patients treated with Qelbree 200 mg and in patients treated with Qelbree 400 mg.
Study 3 (NCT03247517) was a multicenter, randomized, double-blind, three-arm, placebo-controlled, parallel-group monotherapy trial in patients 12 to 17 years of age with ADHD. Total duration of treatment was 6 weeks, including 1-week titration period (starting at 200mg once daily) and a 5-week maintenance phase. Patients were randomized to receive Qelbree 200 mg, Qelbree 400 mg, or placebo, given once daily as a single dose. The primary endpoint was the change from baseline to the end of study on the total score on the ADHD Rating Scale (ADHD-RS-5). The Clinical Global Impression-Improvement (CGI-I) score at the end of the study was a secondary endpoint.
A total of 310 patients were randomized in Study 3; 266 completed and 44 discontinued. The change from baseline (reduction) in ADHD-RS-5 total score was statistically significantly greater in patients treated with Qelbree 200 mg or with Qelbree 400 mg than in patients on placebo (see
Table 4). Compared with patients on placebo, a statistically significantly greater reduction (improvement) in CGI-I score at the end of the study was observed both in patients treated with Qelbree 200 mg and in patients treated with Qelbree 400 mg.
Table 4. Primary Efficacy Results for Change from Baseline in ADHD-RS-5 Total Score in Pediatric Patients (6 to 17 years) with ADHD (Studies 1, 2, 3)Study Number
(Age range)
| Treatment Group | Primary Efficacy Measure: ADHD-RS-5 Total Score |
|---|
| | n | Mean Baseline Score
(SD)
| LS Mean Change from Baseline
(SE)
| Placebo-subtracted Difference
(95% CI)
|
|---|
| ADHD-RS-5 = Attention-Deficit/Hyperactivity Disorder Rating Scale 5
thEdition; n: sample size; SD: standard deviation; SE: standard error; LS Mean: least-squares mean; CI: confidence interval, not adjusted for multiple comparisons
|
Study 1
(6 to 11 years)
| 100 mg/day
| 147 | 45.0 (6.53) | -16.6 (1.16) | -5.8 (-8.9, -2.6) |
| 200 mg/day
| 158 | 44.0 (6.80) | -17.7 (1.12) | -6.9 (-10.0, -3.8) |
| Placebo | 155 | 43.6 (7.05) | -10.9 (1.14) | -- |
Study 2
(6 to 11 years)
| 200 mg/day
| 107 | 43.8 (6.54) | -17.6 (1.43) | -6.0 (-10.0, -1.9) |
| 400 mg/day
| 97 | 45.0 (6.55) | -17.5 (1.52) | -5.8 (-9.9, -1.7) |
| Placebo | 97 | 43.5 (6.79) | -11.7 (1.48) | -- |
Study 3
(12 to 17 years)
| 200 mg/day
| 94 | 39.9 (7.22) | -16.0 (1.45) | -4.5 (-8.4, -0.6) |
| 400 mg/day
| 103 | 39.4 (7.59) | -16.5 (1.38) | -5.1 (-8.9, -1.3) |
| Placebo | 104 | 40.5 (6.79) | -11.4 (1.37) | -- |