A comparison of the relative safety, efficacy, and tolerability of quetiapine and risperidone in outpatients with schizophrenia and other psychotic disorders: the quetiapine experience with safety and tolerability (QUEST) study

Mullen, Jamie; Jibson, Michael D.; Sweitzer, Dennis

doi:10.1016/s0149-2918(00)89080-3

Cited by 129 publications

(77 citation statements)

References 27 publications

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“…In this multicentre, open-label study 60% of patients demonstrated improvements on the ICB and these findings are further supported by the current study, in which response rates on the ICB were between 64-74% for the three subgroups. The efficacy of quetiapine is well established with demonstrated improvement across the whole spectrum of schizophrenia symptoms including positive, negative and affective symptoms (Kasper et al, 2001;Mullen et al, 2001). Indeed, the results of the present analysis further support such broad-based efficacy; in that improvements across positive, negative, general psychopathological and depressive symptoms were observed on switching to quetiapine.…”

Section: Discussionsupporting

confidence: 79%

Efficacy and tolerability of quetiapine in patients with schizophrenia who switched from haloperidol, olanzapine or risperidone

Larmo¹,

Nayer

Windhager³

et al. 2005

Human Psychopharmacology

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A post hoc analysis of the SPECTRUM trial was carried out to evaluate whether the improvements in efficacy and tolerability gained on switching to quetiapine occurred consistently for patients previously treated with either: haloperidol (n = 43); olanzapine (n = 66); or risperidone (n = 55) monotherapy. Patients were initiated with quetiapine to 400 mg/day over 7 days, and then flexibly dosed (300-750 mg/day) for 11 weeks. The mean (SD) modal dose of quetiapine was 501 (138) mg/day in the haloperidol subgroup, 472 (147) mg/day in the olanzapine subgroup and 485 (141) mg/day in the risperidone subgroup at the study endpoint. Switching to quetiapine induced significant improvements from baseline in PANSS scores, with least square mean changes in total scores of -32.5, -15.4, and -18.5 for patients previously treated with haloperidol, olanzapine and risperidone, respectively, (all p < 0.001 vs baseline). Significant improvements were also noted in CDSS scores, particularly for patients clinically depressed at baseline (all p < 0.001 vs baseline). There were significant reductions in EPS on the SAS and BAS for all subgroups (all p < 0.001 vs baseline). Switching to quetiapine produced efficacy and tolerability benefits regardless of whether their previous antipsychotic was haloperidol, olanzapine or risperidone.

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Section: Discussionsupporting

confidence: 79%

Efficacy and tolerability of quetiapine in patients with schizophrenia who switched from haloperidol, olanzapine or risperidone

Larmo¹,

Nayer

Windhager³

et al. 2005

Human Psychopharmacology

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“…Quetiapine showed improvement of symptoms and continued efficacy in open trials in long-term treatment, including negative symptomatology (Buckley 2004;Cheer and Wagstaff 2004;Kasper et al 2004), and comparable efficacy, e.g., to risperidone (Mullen et al 2001). However, double-blind RCTs are lacking to date.…”

Section: Improvement Of Symptomsmentioning

confidence: 91%

World Federation of Societies of Biological Psychiatry (WFSBP) Guidelines for Biological Treatment of Schizophrenia, Part 2: Long-term treatment of schizophrenia

Falkai

Wobrock

Lieberman

et al. 2006

The World Journal of Biological Psychiatry

201

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These guidelines for the biological treatment of schizophrenia were developed by an international Task Force of the World Federation of Societies of Biological Psychiatry (WFSBP). The goal during the development of these guidelines was to review systematically all available evidence pertaining to the treatment of schizophrenia, and to reach a consensus on a series of practice recommendations that are clinically and scientifically meaningful based on the available evidence. These guidelines are intended for use by all physicians seeing and treating people with schizophrenia. The data used for developing these guidelines have been extracted primarily from various national treatment guidelines and panels for schizophrenia, as well as from meta-analyses, reviews and randomised clinical trials on the efficacy of pharmacological and other biological treatment interventions identified by a search of the MEDLINE database and Cochrane Library. The identified literature was evaluated with respect to the strength of evidence for its efficacy and then categorised into four levels of evidence (A Á/D). This second part of the guidelines covers the long-term treatment as well as the management of relevant side effects. These guidelines are primarily concerned with the biological treatment (including antipsychotic medication, other pharmacological treatment options, electroconvulsive therapy, adjunctive and novel therapeutic strategies) of adults suffering from schizophrenia.Key words: Schizophrenia, long-term treatment, evidence-based medicine, practice guidelines, biological treatment, antipsychotics EXECUTIVE SUMMARY OF RECOMMENDATIONS General recommendationsSpecific treatment strategies are required not only for patients suffering from acute schizophrenia, but also in the stabilisation and stable phase of the disease. The stabilisation period follows the acute phase and constitutes a time-limited transition to continuing treatment in the stable phase. The stable phase represents a prolonged period of treatment and rehabilitation during which symptoms are under adequate control and the focus is on improving functioning and recovery. The goals of long-term therapy have to be discussed with the patient on the background of adequately provided information and his personal goals in order to find common ground to encourage a long-term medication strategy (shared-decision making). In this regard a treatment plan must be formulated and implemented. During the stabilisation phase, the main goals of treatment are to facilitate continued reduction in symptoms, consolidate remission, and promote the process of recovery. The main goals of treatment during the stable phase are to ensure that symptom remission or control is sustained, that the patient is maintaining or improving the level of functioning and quality of life, to prevent relapse, and to ensure that monitoring for adverse treatment effects continues. The antipsychotic pharmacological therapy should be accompanied by psychosocial interventions. A number of psychosocial...

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“…Four people, all treated with quetiapine, died during the study (n = 728; one RCT; RR 2.86; CI 0.2 to 52.8) (Figure 16). 83,84 All the evaluations of mental state outcomes were continuous and showed no statistical differences between quetiapine and risperidone, including the following (Figure 17): Figure 6. Efficacy of paliperidone versus placebo, in relation to recurrence of psychosis.…”

Section: -5165-82mentioning

confidence: 99%

Efficacy and safety of atypical antipsychotic drugs (quetiapine, risperidone, aripiprazole and paliperidone) compared with placebo or typical antipsychotic drugs for treating refractory schizophrenia: overview of systematic reviews

et al. 2010

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Efficacy and safety of atypical antipsychotic drugs (quetiapine, risperidone, aripiprazole and paliperidone) compared with placebo or typical antipsychotic drugs for treating refractory schizophrenia: overview of systematic reviewsEficácia e segurança dos antipsicóticos atípicos (quetiapina, risperidona, aripiprazol, paliperidona) ABSTRACTCONTEXT AND OBJECTIVE: According to some cohort studies, the prevalence of refractory schizophrenia (RS) is 20-40%. Our aim was to evaluate the effectiveness and safety of aripiprazole, paliperidone, quetiapine and risperidone for treating RS. METHODS:This was a critical appraisal of Cochrane reviews published in the Cochrane Library, supplemented with reference to more recent randomized controlled trials (RCTs) on RS. The following databases were searched: Medical Literature Analysis and Retrieval System Online (Medline) RESULTS: Seven Cochrane systematic reviews and 10 additional RCTs were included in this review. The data generally showed minor differences between the atypical antipsychotics evaluated and typical antipsychotics, regarding improvement in disease symptoms, despite better adherence to treatment with atypical antipsychotics. Risperidone was specifically evaluated in patients with RS in one of the systematic reviews included, with favorable outcomes, but without definitive superiority compared with other drugs of proven efficacy, like amisulpride, clozapine and olanzapine. CONCLUSIONS:The findings underscore the difficulty in treating these patients, with high dropout rates and treatment patterns of modest improvement in assessments of effectiveness. Atypical antipsychotics have advantages over typical antipsychotics mainly through their better safety profile, which leads to better adherence to treatment. A combination of antipsychotics may also be an option for some refractory patients. RESUMOCONTEXTO E OBJETIVO: De acordo com alguns estudos de coorte, a prevalência da esquizofrenia refratária (ER) está entre 20-40%. Nosso objetivo foi avaliar a efetividade e segurança de aripiprazol, paliperidona, quetiapina e risperidona no tratamento da esquizofrenia refratária. RESULTADOS: Sete revisões sistemáticas Cochrane e 10 ECRs complementares foram incluídos nessa revisão. No geral os dados demonstram pequenas diferenças entre os antipsicóticos atípicos avaliados e os típicos na melhora dos sintomas da doença, apesar da melhor adesão ao tratamento com os atípicos. A risperidona foi avaliada especificamente em pacientes com esquizofrenia refratária em uma das revisões sistemáticas incluídas, a qual demonstrou desfechos favoráveis, porém não definitivos quando comparada a drogas também com eficácia comprovada como amisulprida, clozapina e olanzapina. MÉTODOS: Avaliação crítica das revisões Cochrane publicadas na CONCLUSÕES:Os dados reforçam a dificuldade de tratar esses pacientes, com elevadas taxas de desistência do tratamento e padrões de melhora modestos nas avaliações de eficácia. Os antipsicóticos atípicos têm vantagens sobre os típicos principalmente pelo melh...

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A comparison of the relative safety, efficacy, and tolerability of quetiapine and risperidone in outpatients with schizophrenia and other psychotic disorders: the quetiapine experience with safety and tolerability (QUEST) study

Cited by 129 publications

References 27 publications

Efficacy and tolerability of quetiapine in patients with schizophrenia who switched from haloperidol, olanzapine or risperidone

Efficacy and tolerability of quetiapine in patients with schizophrenia who switched from haloperidol, olanzapine or risperidone

World Federation of Societies of Biological Psychiatry (WFSBP) Guidelines for Biological Treatment of Schizophrenia, Part 2: Long-term treatment of schizophrenia

Efficacy and safety of atypical antipsychotic drugs (quetiapine, risperidone, aripiprazole and paliperidone) compared with placebo or typical antipsychotic drugs for treating refractory schizophrenia: overview of systematic reviews

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