| Primary | Change From Baseline to Week 8 in Yale Global Tic Severity Scale (YGTSS) Total Tic Score (TTS). | The YGTSS is a semi-structured clinical interview designed to measure current (time frame of the past 1 week) tic severity. This scale consists of a tic inventory, with 5 separate rating scales to rate the severity of symptoms, and an impairment ranking. Ratings are made along 5 different dimensions on a scale of 0 to 5 for motor and vocal tics each, including number, frequency, intensity, complexity, and interference. Summation of these 10 scores (ie, 0-50) provides a TTS that was the primary outcome measure in this trial. The YGTSS ranking of impairment score rated on a 50-point scale anchored from 0 (no impairment) to 50 (severe impairment) to assess impairment experienced in areas of self-esteem, family life, social acceptance, and school scores. This is a fully validated scale in adults and has become a standard instrument for the evaluation of the severity of TD in children. | Intent-to-Treat (ITT) Population: All participants randomly assigned to the double-blind treatment. At Week 8, data were available for 42 participants in the low dose, 35 in the high dose and 42 in the placebo group. | Posted | | Least Squares Mean | Standard Error | Units on a scale | | Baseline to Week 8 | | | | ID | Title | Description |
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| OG000 | Aripiprazole Low Dose | For participants who weighed < 50 kg at baseline, low dose was 5 mg/day. For participants who weighed ≥ 50 kg at baseline, low dose was 10 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was titrated to achieve the randomized dose. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. | | OG001 | Aripiprazole High Dose | For participants who weighed < 50 kg at baseline, high dose was 10 mg/day. For participants who weighed ≥ 50 kg at baseline, high dose was 20 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was then titrated weekly until the randomized dose was achieved. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. | | OG002 | Placebo | Participants received matching placebo tablets in the same way as aripiprazole. |
| | | Title | Denominators | Categories |
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| | | Title | Measurements |
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| - OG000-13.35± 1.59
- OG001-16.94± 1.61
- OG002-7.09± 1.55
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| | Group IDs | Group Description | Statistical Method | Statistical Comment | P-Value | P-Value Comment | Parameter Type | Parameter Value | Dispersion Type | Dispersion Value | Confidence Interval Sides | Confidence Interval % | CI Lower Limit | CI Upper Limit | CI Lower Limit Comment | CI Upper Limit Comment | Estimate Comment | Tested Non-Inferiority | Non-Inferiority Type | Non-Inferiority Comment | Other Analysis Description |
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| Assuming 5% of participants may drop out of the trial without a postbaseline efficacy evaluation, a total of 126 participants were required to provide at least 80% power to detect a treatment difference of -5 (common standard deviation [SD] of 8.5) between at least 1 of 2 aripiprazole dose levels and placebo in the primary outcome. | Mixed Models Analysis | Treatment, week, treatment by week interaction, region, and weight group were fixed categorical effects; baseline value as a fixed covariate. | 0.0020 | The Hochberg procedure was used to adjust for multiplicity. | Treatment difference | -6.26 | | | 2-Sided | 95 | -10.18 | -2.34 | | | | No |
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| Secondary | Change in Clinical Global Impressions Scale-Tourette's Syndrome (CGI-TS) Score at Week 8. | To assess CGI-TS severity, the rater or physician answered the following question: "Considering your total clinical experience with this particular population, how mentally ill is the patient at this time?" However, the evaluation of illness was limited to manifestations of TD only. Response choices included: 0 = not assessed; 1 = normal, not at all ill; 2 = borderline mentally ill; 3 = mildly ill; 4 = moderately ill; 5 = markedly ill; 6 = severely ill; and 7 = among the most extremely ill patients. The change score was obtained from CGI-TS improvement scale assessment: 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. | ITT Population: All participants randomly assigned to the double-blind treatment. At Week 8, data were available for 42 participants in the low dose, 35 in the high dose and 42 in the placebo group. | Posted | | Least Squares Mean | Standard Error | Units on a scale | | Week 8 | | | | ID | Title | Description |
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| OG000 | Aripiprazole Low Dose | For participants who weighed < 50 kg at baseline, low dose was 5 mg/day. For participants who weighed ≥ 50 kg at baseline, low dose was 10 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was titrated to achieve the randomized dose. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. | | OG001 |
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| Secondary | Mean Change From Baseline to Endpoint (Week 8) in Total YGTSS Score | The YGTSS consists of a tic inventory, with 5 separate rating scales to rate the severity of symptoms (on a scale of 0 to 5 for 5 different dimensions, including number, frequency, intensity, complexity, and interference) of motor and vocal tics, and an impairment ranking. The Total YGTSS score is the summation of the severity scores of motor and vocal tics and also the ranking of impairment (range of 0 to 100). A missing value of a YGTSS item scale could result in a missing Total YGTSS score. A reduction in Total YGTSS score from baseline represents an improvement in symptoms. | ITT Population: All participants randomly assigned to the double-blind treatment. At Week 8, data were available for 42 participants in the low dose, 35 in the high dose and 42 in the placebo group. | Posted | | Least Squares Mean | Standard Error | Units on a scale | | Baseline to Week 8 | | | | ID | Title | Description |
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| OG000 | Aripiprazole Low Dose | For participants who weighed < 50 kg at baseline, low dose was 5 mg/day. For participants who weighed ≥ 50 kg at baseline, low dose was 10 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was titrated to achieve the randomized dose. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. | | OG001 | Aripiprazole High Dose | For participants who weighed < 50 kg at baseline, high dose was 10 mg/day. For participants who weighed ≥ 50 kg at baseline, high dose was 20 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was then titrated weekly until the randomized dose was achieved. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. |
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| Secondary | Mean Change From Baseline to Endpoint (Week 8) in CGI-TS Severity Score | The CGI-TS Severity scale (range 0-7) is a single-item rating score, with higher scores representing greater severity or less improvement. A response of 0 (not assessed) is considered and handled as missing data. | ITT Population: All participants randomly assigned to the double-blind treatment. At Week 8, data were available for 42 participants in the low dose, 35 in the high dose and 42 in the placebo group. | Posted | | Least Squares Mean | Standard Error | Units on a scale | | Baseline to Week 8 | | | | ID | Title | Description |
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| OG000 | Aripiprazole Low Dose | For participants who weighed < 50 kg at baseline, low dose was 5 mg/day. For participants who weighed ≥ 50 kg at baseline, low dose was 10 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was titrated to achieve the randomized dose. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. | | OG001 | Aripiprazole High Dose | For participants who weighed < 50 kg at baseline, high dose was 10 mg/day. For participants who weighed ≥ 50 kg at baseline, high dose was 20 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was then titrated weekly until the randomized dose was achieved. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. |
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| Secondary | Response Rate | Clinical response is defined as > 25% improvement from baseline to Week 8 in YGTSS TTS or a CGI-TS Change score of 1 [very much improved] or 2 [much improved] at Week 8. Response will be considered as missing only if both YGTSS TTS and CGI-TS change score are missing. As long as one of them is non-missing, response outcome will be determined based on the non-missing score. | ITT Population: All participants randomly assigned to the double-blind treatment. At Week 8, data were available for 42 participants in the low dose, 35 in the high dose and 42 in the placebo group. | Posted | | Number | | Percentage of Responders | | Week 8 | | | | ID | Title | Description |
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| OG000 | Aripiprazole Low Dose | For participants who weighed < 50 kg at baseline, low dose was 5 mg/day. For participants who weighed ≥ 50 kg at baseline, low dose was 10 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was titrated to achieve the randomized dose. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. | | OG001 | Aripiprazole High Dose | For participants who weighed < 50 kg at baseline, high dose was 10 mg/day. For participants who weighed ≥ 50 kg at baseline, high dose was 20 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was then titrated weekly until the randomized dose was achieved. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. |
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| Secondary | Treatment Discontinuation Rate | Treatment discontinuation rate will be calculated as the number of discontinued participants (ie, those who were withdrawn from the trial without completing the Week 8 visit) over the number of all randomized participants. | ITT Population: All participants randomly assigned to the double-blind treatment. | Posted | | Number | | Percentage of participants | | Week 8 | | | | ID | Title | Description |
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| OG000 | Aripiprazole Low Dose | For participants who weighed < 50 kg at baseline, low dose was 5 mg/day. For participants who weighed ≥ 50 kg at baseline, low dose was 10 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was titrated to achieve the randomized dose. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. | | OG001 | Aripiprazole High Dose | For participants who weighed < 50 kg at baseline, high dose was 10 mg/day. For participants who weighed ≥ 50 kg at baseline, high dose was 20 mg/day. All participants randomized to aripiprazole began treatment at 2 mg/day, with the dose titrated to 5 mg/day after 2 days. The dose was then titrated weekly until the randomized dose was achieved. All participants were to have reached their randomized dose by Week 3 (Day 21) and were to remain on that dose. | |
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