The CDRS-R is a clinician-rated scale to measure the severity of depression in children and adolescents. The CDRS-R was rated by a clinician following interviews with the child and parent and consisted of 17 items out of which 3 items rated nonverbal observations (listless speech, hypoactivity, and depressed affect). Fourteen items were rated on a 7-point scale from 1 to 7, and 3 items (sleep disturbance, appetite disturbance, and listless speech) were scored on a 5-point scale from 1 to 5. A rating of 1 indicated normal functioning and a higher number indicated a greater degree of depression. The total score ranged from 17 (normal) to 113 (severe depression). Least square (LS) mean was estimated using a restricted maximum likelihood (REML)-based Mixed Model Repeated Measurements (MMRM) approach.

Treatment-emergent adverse events (TEAE) are adverse events with an onset that occurs after receiving study drug and within 30 days after receiving the last dose of study drug. A TEAE may also be a pretreatment adverse event or a concurrent medical condition diagnosed prior to the date of first dose of study drug that increases in severity after the start of dosing.

Serious treatment-emergent adverse events (serious-TEAE) are adverse events with an onset that occurs after receiving study drug and within 30 days after receiving the last dose of study drug. A serious-TEAE may also be a pretreatment adverse event or a concurrent medical condition diagnosed prior to the date of first dose of study drug that increases in severity after the start of dosing. Serious Adverse Events include adverse events that result in death, require either inpatient hospitalization or the prolongation of hospitalization, are life-threatening, result in a persistent or significant disability/incapacity or result in a congenital anomaly/birth defect. Other important medical events, based upon appropriate medical judgment, may also be considered serious adverse events if a trial participant's health is at risk and intervention is required to prevent an outcome mentioned.

Treatment-emergent adverse events are adverse events with an onset that occurs after receiving study drug and within 30 days after receiving the last dose of study drug. A TEAE may also be a pre-treatment adverse event or a concurrent medical condition diagnosed prior to the date of first dose of study drug that increases in severity after the start of dosing.

The MADRS is a depression rating scale consisting of 10 items, each rated 0 (normal) to 6 (most abnormal). The 10 items represent the core symptoms of depressive illness. The overall score ranges from 0 (symptoms absent) to 60 (severe depression). A decrease in the total score or on individual items indicates improvement. Least squares (LS) means are from a mixed model for repeated measurements (MMRM) analysis of covariance (ANCOVA) with treatment, center, week, treatment-by-week interaction, Baseline MADRS total score-by-week as fixed effects.

The MADRS is a depression rating scale consisting of 10 items, each rated 0 (normal) to 6 (most abnormal). The 10 items represent the core symptoms of depressive illness. The overall score ranges from 0 (symptoms absent) to 60 (severe depression). A decrease in the total score or on individual items indicates improvement. Least squares (LS) means are from a mixed model for repeated measurements (MMRM) analysis of covariance (ANCOVA) with treatment, center, week, treatment-by-week interaction, Baseline MADRS total score-by-week as fixed effects.

The DSST assesses relative contributions of speed, memory, executive function and visual scanning. Participants are required to copy symbols that are paired with simple geometric shapes or numbers within a specific time for a total possible score of 0 to 133. Higher scores-correct number of symbols reflects greater objective cognitive functioning. An increase in score represents an improvement in an integrated measure of cognitive function. An Analysis of Covariance (ANCOVA) model was used with treatment and center as fixed factors and the Baseline value as a covariate.