Aripiprazole in the Treatment of the Psychosis Prodrome an Open-Label Pilot Study
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BRITISH JOURNAL OF PSYCHIATRY (2007), 191 (suppl. 51), s96^s96^s101. s101. doi: 10.1192/bjp.191.51.s96 Aripiprazole in the treatment of the psychosis past 3 months; (e) use of antipsychotic medication in the previous 3 months; (f) prodromeprodrome change in dosage of any antidepressant within 6 weeks, stimulant medication with- in 4 weeks, or mood stabiliser within 4 An open-label pilot study weeks.weeks. The Criteria of Prodromal Syndromes SCOTT W.WOODS, ELIZABETH M. TULLY, BARBARA C. WALSH, (COPS; Woods et aletal, 2001) were used to KEITH A. HAWKINS, JENNIFER L. CALLAHAN, SHUKI J. COHEN, identify those possibly prodromal. The DANIEL H. MATHALON, TANDY J. MILLERand THOMAS H. McMcGLASHANGLASHAN COPS are based on sub-threshold levels of positive symptoms and operationally de- fine three prodromal syndromes (Yung etet Background Research studies for the The prodromal phase of schizophrenic dis- alal, 1998): attenuated positive symptom treatmentofthe putative prodromal orders has been recognised since the 19th syndrome, brief intermittent psychotic century (Bleuler, 1911) and the possibility syndrome, and genetic risk and recent phase of psychotic disorders have begunto of treatment during the prodromal phase functional decline syndrome. The COPS appear.appear. has a history almost as long (Sullivan, and the three syndromes are described in 1927). Although some studies have begun detail elsewhere (Woods et aletal, 2001; Miller Aims To obtain preliminary evidence of to investigate methods to prevent progres- et aletal, 2003,2003aa). Individuals were assessed to the short-term efficacy and safetyof sion from the putatively identified pro- determine whether the COPS were met by aripiprazole treatment in people with the dromal phase to frank psychosis (Falloon, using the Structured Interview for Prodro- psychosis prodrome. 1992; McGorry et aletal, 2002; Morrison etet mal Syndromes (SIPS; Miller et aletal, 1999).,1999). alal, 2004; McGlashan et aletal, 2006), fewer Reliability of the COPS diagnosis of pos- MethodMethod Fifteen participants meeting have focused on the acute treatment effects sible prodrome has been excellent when prodrome criteria (mean age17.1years, on current symptoms (Woods et aletal, 2003).,2003). using the SIPS (Miller et aletal, 2002, 2003aa),), Aripiprazole is a relatively new anti- and patients thus diagnosed are symptom- s.d.s.d.¼5.5) enrolledin an open-label, single- psychotic medication with limited liability atic (Milleratic(Miller et aletal, 2003,2003bb), functionally im- site trialwith fixed-flexible dosing of for weight gain (Marder et aletal, 2003), whose paired (Miller et aletal, 2003,2003bb), cognitively aripiprazole (5^30 mg/day) for 8 weeks. mechanism of action differs from other impaired (Hawkins et aletal, 2004,2004aa) and)and antipsychotics in that it is a partial agonist treatment-seeking (Preda et aletal, 2002).,2002). ResultsResults Inthe mixed-effects repeated- rather than a full antagonist at dopamine measures analysis, improvementfromimprovement from DD22 receptors (Burris et aletal, 2002). The Study design overall goal of the present pilot study was baseline on the Scale of Prodromal Participants were enrolled between October to obtain preliminary information about Symptoms total score was statistically 2004 and February 2006. The Yale Human the efficacy and safety of aripiprazole in significant by the first week.No Investigation Committee Institutional relieving symptoms that may be prodromal Review Board approved the protocol. The participantconvertedparticipantconvertedto to psychosis and for schizophrenia. trial is registered with ClinicalTrials.gov 13 completed treatment.Neuro- (NCT00237874). This was an open-label psychologicalmeasures showed no study at one site for 8 weeks, followed by consistent improvement; mean weight METHOD an open-label extension phase with gain waswas1.2 1.2 kg. Akathisia emerged in 8 SampleSample monthly follow-up visits to 52 weeks. Findings from the extension phase will be participants, butthe mean Barnes Adult participants gave written informed reported subsequently. Akathisia Scale score fell to baseline levels consent and minors gave written informed by the finalfinalvisit. visit. Adverse events were assent with consent from a parent or guar- dian. Participants were included if they Procedure otherwise minimal. were treatment-seeking out-patients of 13– During the 1–2 weeks prior to beginning Conclusions Aripiprazole shows a 40 years of age who met diagnostic criteria study medication, participants underwent for a possible prodromal syndrome. People eligibility and neuropsychological examina- promising efficacy and safety profile for were excluded for any of the following tions. After beginning study medication, the psychosis prodrome.Placebo- reasons: (a) past or current DSM–IV criter- participants were scheduled for eight controlled studies are indicated. ia (American Psychiatric Association, 1994) weekly visits. for any lifetime psychotic disorder; (b) they Dosing followed a fixed-flexible sched- Declaration of interest S.S.W.W.W.has W. h a s were judged clinically to have a psychiatric ule. Initial doses were 5 mg/day aripipra- received grants from Bristol-Myers disorder (e.g. mania, depression, attention- zole; after 1 week, the dose was scheduled Squibb,Janssen, and Eli Lilly. deficit hyperactivity disorder) which could for increase to 10 mg/day and after 2 weeks account for the symptoms; (c) they pre- to 15 mg/day, unless adverse effects dic- sented with symptoms occurring primarily tated a slower titration schedule. After the as sequelae to drug or alcohol use; (d) alco- third week, the dose could be increased hol or drug misuse or dependence in the further to 20 mg/day and if needed to s96 Downloaded from https://www.cambridge.org/core. 29 Sep 2021 at 17:08:56, subject to the Cambridge Core terms of use. ARIPIPRAZOLE FOR THE PSYCHOSIS PRODROME 30 mg/day should the person not be re- forms for verbal memory; and the Wiscon- there are a dearth of age-specific normative sponding. Aripiprazole was prescribed as sin Card Sort Test (WCST; Heaton et aletal,, data (our sample with test–retest data has a a single daily dose unless there was a reason 1993), semantic (category) fluency, and mean age of 15.5 years, s.d.¼1.3), baseline to divide the dose. The number of milli- Controlled Oral Word Association (FAS; data (Table 3) suggest mild neuropsycho- grams prescribed and the number taken Spreen & Benton, 1969) test of phonemic logical impairment similar to that observed were recorded each day; these data were fluency for executive functioning. in our previous prodromal sample (Hawkins used to calculate the percentage adherence Abnormal involuntary movements and et aletal, 2004,2004aa). A higher mean AVLT total since the previous visit. Drowsiness was EPS were assessed by observation and ad- score was reported for a younger sample managed initially by switching the timing ministration of the Simpson–Angus Scale by Spreen & Strauss (1998) and substan- of the daily dose to bedtime or by dividing (SAS; Simpson & Angus, 1970), the Barnes tially better Trail-Making Part A and Part the dose. Insomnia was managed initially Akathisia Scale (BAS; Barnes, 1989), and B performances were reported for a healthy by switching the timing of the daily dose the Abnormal Involuntary Movement Scale sample aged 15–17 years by Fromm-Auch to early morning. Lorazepam was used to (AIMS; Branch, 1975). Safety was also & Yeudall (1983). treat insomnia or agitation. Lorazepam or assessed by analysing treatment-emergent Thirteen participants completed the 8- the anticholinergic benztropine was per- adverse events (Systematic Assessment For week study (87%). Of the two drop-outs, mitted for extrapyramidal symptoms Treatment-Emergent Events, SAFTEE, spe- one completed 48 days on aripiprazole (EPS). Participants continued doses of anti- cific inquiry method; Levine & Schooler, and dropped out because of improvement, depressant, mood stabiliser, or stimulant 1986), vital signs and weight. Treatment- feeling medication was no longer needed. medication prescribed before consent but emergent adverse events were defined as The other completed only 8 days on medi- were not permitted to begin or increase do- those first occurring or worsening after cation and left the study primarily because sage of these medications after consent. baseline. All of the above measures were of sedation after the first 10 mg dose, after Individual and family psychosocial inter- assessed at baseline and weekly thereafter. having concluded that 5 mg was ineffective ventions with supportive and psychoeduca- after the first week. tional components were available to each Statistical analyses participant. Medication For the present report, the time frame was the first 8 weeks after beginning study Prescribed mean (s.d.) aripiprazole doses at Assessments medication, and the principal outcome weeks 1, 2, 3, 4, 5, 6, 7 and 8 were 5 (0), 9 (2), 11 (5), 11 (7), 11 (6), 13 (6), 14 (8), and The primary efficacy measure for the analy- measure was the SOPS total score. Analyses 15 (7) mg/day, respectively. Final pre- sis of acute treatment was change over time were based on the intent-to-treat (ITT) scribed doses were 5 mg/day (nn¼1 parti-1parti- in the total score of the Scale of Prodromal principle. All participants were included in cipant), 10 mg/day (nn¼3), 15 mg/day Symptoms (SOPS; Miller et aletal, 1999), a 19- the analysis. The principal outcome mea- (s.d.(s.d.¼7) (7)(nn¼6), 20 mg/day (nn¼4) and4)and item scale with items scored 0–6. The inter- sure was addressed using a mixed-effects 30 mg/day (nn¼1). Reported mean (s.d.) per- rater reliability has been excellent (Miller etet likelihood-based repeated measures linear centage adherence with prescribed aripipra- alal, 2003,2003aa). Factor analysis supports the val- model (MMRM, as implemented in SAS zole doses was 94 (13), 92 (22), 98 (4), 96 idity of the SOPS sub-scales (Hawkins etet PROC MIXED) on post-baseline change (8), 97 (7), 95 (10), 98 (5), and 94 (9) at alal, 2004,2004bb). Treatment response was defined scores, using baseline scores as a covariate.