Intramuscular Depot Formulation of Aripiprazole as Maintenance Treatment in Patients With Schizophrenia

Otsuka Pharmaceutical Development & Commercialization, Inc.1,081 enrolled

Overview

To evaluate the overall effectiveness of aripiprazole intramuscular (IM) depot as maintenance treatment in patients with schizophrenia.

This will be an open-label, uncontrolled study which will enroll subjects from Phase 4 of Study 31-07-246 and Phase 3 of Study 31- 07-247 and new subjects not participating in Studies 246/247. The treatment history of subjects prior to enrollment in the open-label study will vary according to the design of the pivotal double-blind study (i.e., 31-07-246 or 31-07-247). This open-label study will be comprised of phases similar to the pivotal double-blind studies (i.e., Studies 246/247): a screening phase (if applicable), a conversion phase (Phase 1, if applicable), an oral stabilization phase (Phase 2), and an IM depot open-label maintenance phase (Phase 3). Phase 3 will be a 52-week treatment period with a 26-week follow-up period. During Phase 3 (the open-label maintenance phase) oral aripiprazole rescue medication will be allowed for subjects who do not meet stability criteria or meet the criteria for impending relapse/exacerbation of psychotic symptoms.

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

1,081

Conditions

Schizophrenia

Interventions

Aripiprazole IM DepotDRUG

300mg or 400mg

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Subjects who are able to provide written informed consent and/or consent obtained from a legally acceptable representative (as require by IRB/IEC), prior to the initiation of any protocol-required procedures. * Male and female subjects 18 to 65 years of age, inclusive, at time of informed consent. * Subjects who complete Studies 246/247 or who withdrew from the double-blind maintenance phase of either study (Phase 4 of Study 246 or Phase 3 of Study 247), or new subjects not participating in Studies 246/247. * \# Subjects who, in the investigator's judgment, require chronic treatment with an antipsychotic medication. * Subjects able to understand the nature of the study and follow protocol requirements, including the prescribed dosage regimens, tablet ingestion, IM depot injection, discontinuation of prohibited concomitant medications, who can read and understand the written word in order to complete patient-reported outcomes measures, and who can be reliably rated on assessment scales. Exclusion Criteria: * Subjects with a current DSM-IV-TR diagnosis other than schizophrenia, including schizoaffective disorder, major depressive disorder, bipolar disorder, delirium, dementia, amnestic or other cognitive disorders. Also, subjects with borderline, paranoid, histrionic, schizotypal, schizoid or antisocial personality disorder. * Subjects with schizophrenia that are considered resistant/refractory to antipsychotic treatment by history or response only to clozapine. * Subjects with a significant risk of violent behavior or a significant risk of committing suicide based on history or investigator's judgment. * Subjects who currently meet DSM-IV-TR criteria for substance dependence; including alcohol and benzodiazepines, but excluding caffeine and nicotine, or two positive drug screens for cocaine. * Subjects who are known to be allergic, intolerant, or unresponsive to prior treatment with aripiprazole or other quinolinones. * Subjects with a history of hypersensitivity to antipsychotic agents. * Subjects with a history of neuroleptic malignant syndrome or clinically significant tardive dyskinesia at screening.

Locations (214)

Outcomes

Primary Outcomes

Percentage of Stable Participants at Baseline Who Remained Stable at Endpoint (Last Visit).

"Stable" was defined as meeting all of the following criteria: Outpatient status; Positive and negative syndrome scale (PANSS) total score ≤ 80; Lack of specific psychotic symptoms on the PANSS as measured by a score of ≤ 4 on each of the following items (possible scores of 1 to 7 for each item): 1) conceptual disorganization 2) suspiciousness 3) hallucinatory behavior 4) unusual thought content; Clinical Global Impression of Severity (CGI-S) ≤ 4 (moderately ill); and Clinical Global Impression for Severity of Suicidality (CGI-SS) ≤ 2 (mildly suicidal) on Part 1 and ≤ 5 (minimally worsened) on Part 2. The percentage of stable participants at baseline who remain stable at endpoint (last visit) is described here.

Time frame: Baseline to Week 52/Last visit

Secondary Outcomes

Percentage of Participants Meeting Exacerbation of Psychotic Symptoms/Impending Relapse Criteria.

"Impending relapse criteria" was defined as meeting all the following criteria: 1) Clinical Global Impression of Improvement (CGI-I) ≥ 5 (minimally worse), AND an increase to score of \>4 and absolute increase of ≥ 2 on the individual PANSS items (conceptual disorganization, hallucinatory behavior, suspiciousness, unusual thought content); or an increase to score \>4 and absolute increase of ≥ 4 on the combined 4 PANSS items on any of these PANSS items (conceptual disorganization, hallucinatory behavior, suspiciousness, unusual thought content) OR 2) Hospitalization due to worsening of psychotic symptoms, but excluding hospitalization for psychosocial reasons, OR 3) CGI-SS score of 4 (severely suicidal) or 5 (attempted suicide) on Part 1 and/or 6 (much worse) or 7 (very much worse) on Part 2, OR 4) Violent behavior resulting in clinically relevant self-injury, injury to another person, or property damage.

Time frame: Weeks 2,4,8,12,16,20,24,28,32,36,40,44,48,52, and Last visit (upto 4 weeks ± 3 days after completion or withdrawal)

Percentage of Participants Achieving Remission.

Remission is defined as a score of ≤ 3 on each of the following specific PANSS items, maintained for a period of six months: delusions, unusual thought content, hallucinatory behavior, conceptual disorganization, mannerisms/posturing, blunted affect, social withdrawal, and lack of spontaneity.

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.

Unnamed facility

Chandler, Arizona, United States

Unnamed facility

Anaheim, California, United States

Unnamed facility

Cerritos, California, United States

Unnamed facility

Chino, California, United States

Unnamed facility

Escondido, California, United States

Unnamed facility

Garden Grove, California, United States

Unnamed facility

Glendale, California, United States

Unnamed facility

Glendale, California, United States

Unnamed facility

Imperial, California, United States

Unnamed facility

La Habra, California, United States

...and 204 more locations

Time frame: Overall remission from Weeks 2,4,8,12,16,20,24,28,32,36,40,44,48 and 52

Percentage of Participants Stable at Baseline and Remaining Stable at Week 28.

"Stable" was defined as meeting all of the following criteria: Outpatient status; PANSS total score ≤ 80; Lack of specific psychotic symptoms on the PANSS as measured by a score of ≤ 4 on each of the following items (possible scores of 1 to 7 for each item): 1) conceptual disorganization 2) suspiciousness 3) hallucinatory behavior 4) unusual thought content; Clinical Global Impression of Severity (CGI-S) ≤ 4 (moderately ill); and Clinical Global Impression for Severity of Suicidality (CGI-SS) ≤ 2 (mildly suicidal) on Part 1 and ≤ 5 (minimally worsened) on Part 2. The percentage of stable participants at baseline who remain stable at Week 28 is described here.

Time frame: Baseline to Week 28

Percentage of Participants With Time to First Exacerbation of Psychotic Symptoms/Impending Relapse.

Participants who first time meet relapse criteria were considered as having an event at date of exacerbation of psychotic symptoms/impending relapse. Time to first event was calculated as the earliest date of meeting one of relapse criteria. Limited concurrent treatment with oral aripiprazole was permitted as rescue therapy.

Time frame: Baseline to Week 52

Mean Change From Baseline to Endpoint (Last Visit) in Positive and Negative Syndrome Scale (PANSS) Total Score.

PANSS total score (range 30-210) is the sum of the rating scores for 7 positive scale items, 7 negative scale items and 16 general psychopathology scale items from the PANSS scale. PANSS positive subscale score (range 7-49) is the sum of the rating scores for the 7 positive scale items from the PANSS scale. PANSS negative subscale score (range 7-49) is the sum of the rating scores for the 7 negative scale items from the PANSS scale. The severity of each scale is rated on a 7-point scale, with a score of 1 indicating the absence of symptoms and a score of 7 indicating extremely severe symptoms.

Time frame: Baseline, Weeks 12, 24, 52 and last visit

Mean Change From Baseline in Clinical Global Impression of Severity (CGI-S) Score.

To assess CGI-S, the rater or physician will answer the following question: "Considering your total clinical experience with this particular population, how mentally ill is the participant at this time?" Response choices include: 0 = not assessed; 1 = normal, not ill at all; 2 = borderline mentally ill; 3 = mildly ill; 4 = moderately ill; 5 = markedly ill; 6 = severely ill; and 7 = among the most extremely ill participants.

Time frame: Baseline, Weeks 12, 24, 52 and last visit

Mean Change From Baseline to Endpoint in PANSS Positive and Negative Subscales.

PANSS positive subscale score (range 7-49) is the sum of the rating scores for the 7 positive scale items from the PANSS scale. Positive subscale consists of 7 positive symptom constructs: delusions, conceptual disorganization, hallucinatory behavior, excitement, grandiosity, suspiciousness/persecution, and hostility). PANSS negative subscale score (range 7-49) is the sum of the rating scores for the 7 negative scale items from the PANSS scale. Negative subscale consists of 7 negative symptom constructs: blunted affect, emotional withdrawal, poor rapport, passive pathetic withdrawal, difficulty in abstract thinking, lack of spontaneity and flow of conversation, stereotyped thinking). The severity of each scale is rated on a 7-point scale, with a score of 1 indicating the absence of symptoms and a score of 7 indicating extremely severe symptoms.

Time frame: Baseline, Weeks 12, 24, 52 and last visit

Mean Clinical Global Impression of Improvement (CGI-I) Score.

To assess CGI-I the rater or physician will rate the participant's total improvement whether or not it is due entirely to drug treatment. All responses will be compared to the participants condition at baseline. Response choices include: 0 = not assessed, 1 = very much improved, 2 = much improved, 3 = minimally improved, 4 = no change, 5 = minimally worse, 6 = much worse, and 7 = very much worse.

Time frame: Weeks 2, 4, 12, 24, 52 and last visit

Percentage of Participants Who Discontinued Due to All Causes.

Participants who discontinued due to any cause were noted. Limited concurrent treatment with oral aripiprazole was permitted as rescue therapy.

Time frame: Baseline to Week 52