Open-label Study to Evaluate the Effectiveness of an Intramuscular Formulation of Aripiprazole (OPC-14597) as Maintenance Treatment in Patients With Bipolar I Disorder

An adverse event (AE) is defined as any untoward medical occurrence in a patient or participant enrolled in the clinical trial and which does not necessarily have to have a causal relationship with the investigational medicinal product (IMP). AEs were assessed as a criteria for safety and tolerability.

Injection-site pain was evaluated by mean visual analog scale (VAS) scores as reported by the participant after each injection at visits where an injection occurred. Ratings ranged from 0 (no pain) to 100 (unbearably painful).

Standard safety variables to be analyzed included clinical laboratory tests. Incidence of treatment emergent adverse events (TEAEs) of potential clinical relevance included abnormal values in serum chemistry, hematology, urinalysis, and other laboratory test that were identified based on pre-defined criteria. Abnormal laboratory values in participants were reported as serious adverse event/adverse events (SAE/AEs) and are reported in the SAE/other AE section of this report.

TEAEs of potential clinical relevance included abnormal values in body weight, systolic and diastolic blood pressure, heart rate, and body temperature that were identified based on pre-defined criteria. Abnormal laboratory values in participants were reported as SAE/AEs and are reported in the SAE/other AE section of this report.

Twelve-lead ECGs were recorded at specified visits. For each time point, three 12-lead ECG recordings were obtained approximately 5 minutes apart. Additional 12-lead ECGs were permitted to be obtained at the investigator's discretion and were to always be obtained in the event of an early termination. The ECGs were evaluated at the investigational site to determine the participant's eligibility and to monitor safety during the trial.

AIMS: 10 items described dyskinesia signs; 0-absence/no awareness; 4-severe condition/severe distress. Total score for Items 1-10 ranges from 0 to 40; a higher score reflects severe condition. SAS:Consisted of 10 parkinsonism signs;1-no symptoms;5-severe.Total score for Items 1-10 ranges from 1 to 50;a higher score reflects severe condition.DIEPSS:A 9-item rating scale (8 assessed individual symptoms [4 categories of parkinsonism, akathisia, dystonia & dyskinesia]+1 assessed general severity) was used;0-no symptoms/normal, 4-severe.Total score (8 individual symptom items) was in range of 0 to 32 (a higher score reflects severe condition).BARS:Consisted of 4 items related to akathisia:objective observation, subjective feelings of restlessness, distress, global clinical evaluation.Only BARS global clinical assessment score has been presented and rated using scale:0-absence of symptoms;5-severe akathisia.Total BARS global score ranges from 0 to 5,a higher score reflects severe condition.

Suicidality was monitored throughout the trial using the C-SSRS at every visit. The C-SSRS scale consisted of a screening/baseline evaluation that assessed the participant's lifetime experience and experience over the last 90 days with suicide events and suicidal ideation and a post-baseline/ "Since Last Visit" evaluation that focused on suicidality since the last trial visit.

Injection-site reactions were assessed by the investigator (or qualified designee) and the participant. Investigators rated localized pain, redness, swelling, and induration at the most recent injection site using a 4-point categorical scale (absent, mild, moderate, severe) . The participant indicated the degree of pain at the most recent injection site using a VAS. Ratings ranged from 0 (no pain) to 100 (unbearably painful). Ratings included were: 0 = absent, 1 = mild, 2 = moderate, 3 = severe. These assessments occurred at trial visits where injections occurred (scheduled and unscheduled), beginning with the first dose of open-label aripiprazole IM depot administered at the final visit of the Oral Stabilization Phase and continued through the last injection prior to the end of the IM Depot Maintenance Phase/Early termination (ET) visit (ie, evaluations were not done at end of the IM Depot Maintenance Phase/ET visit).

The secondary objective was to evaluate the efficacy, as measured by the percentage of stable participants at baseline who remained stable at the end of treatment in the IM depot maintenance phase, of aripiprazole IM depot administered every 4 weeks for up to 52 weeks to subjects with bipolar I disorder.