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Industry's blockbuster sellers--the atypical antipsychotics performed WORSE than their cheaper, non-patented precursors.
A meta-analysis of first generation neuroleptics / antipsychotics (FGAs--e.g., Haldol, thorazine) vs. Second generation so-called 'atypical antipsychotics' (SGAs--Zyprexa, Risperdal, Seroquel, others) shows that even in cases where atypical antipsychotics were prescribed for legitimate, FDA-approved conditions--i.e., schizophrenia--the drugs were shown not to be safe or effective.
Industry's blockbuster sellers--the atypical antipsychotics performed WORSE than their cheaper, non-patented precursors. And the atypicals had MORE adverse side-effects such as, acute weight gain and somnolence. Both the typical (FGAs) and the atypical (SGAs) caused extrapyramidal side effects in 57% of children.
The authors acknowledge a flaw in the meta-analysis is "exclusion of unpublished data, omission of which may have, conceivably, led to overestimation of response rates." Indeed, until independent analysts gained access to the SSRI antidepressant unpublished data--those drugs were touted as "wonder drugs"--the data, however, showed that their benefit was largely due to the placebo illusion.
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www.medscape.com/medline/abstract/16470340 MEDSCAPE Antipsychotic Therapy for Childhood Schizophrenia Lacks Evidence Base: Child and Adolescent Psychiatry Viewpoint Randall F. White, MD, FRCPC; Andro Giorgadze, MD Medscape Psychiatry & Mental Health. 2006;11(2) C2006 Medscape Posted 08/07/2006
Antipsychotics in Early-Onset Schizophrenia: Systematic Review and Meta-analysis Armenteros JL, Davies M Eur Child Adolesc Psychiatry. 2006;15:141-148
Summary The United States Food and Drug Administration (FDA) has not approved any antipsychotic drugs for treating childhood schizophrenia; yet, clinicians routinely use medications for this disorder. To examine the available evidence, published articles reporting prospective treatment of subjects 5-18 years old diagnosed with schizophrenia were identified and then rated, using instruments to measure outcomes. Of 26 articles containing primary data, 15 met inclusion criteria:
1 case series; 2 randomized, double-blind, placebo-controlled trials; 7 were open trials; and 5 randomized, either single- or double-blind, non-placebo-controlled trials.
The studies included a total of 294 subjects; 209 received first-generation antipsychotics (FGAs), 85 received second-generation antipsychotics (SGAs), and 36 received placebo. In FGA studies, the mean response rate was 72.3% with a range of 35% to 93%. In SGA studies, the mean response rate was 55.7% with a range of 13% to 75%. The difference in response rate comparing the 2 classes of medication demonstrated a significant trend (P < .10). In analysis of studies that used the Brief Psychiatric Rating Scale as an outcome measure, the effect size for FGAs vs SGAs was 0.36 in favor of FGAs.
Analysis of adverse effects found mean weight gain of 1.4 kg with FGAs and 4.5 kg with SGAs, more sedation with SGAs, but a similar rate of extrapyramidal side effects in the 2 medication classes of approximately 57%.
Viewpoint The finding of better treatment response with FGAs may be surprising, but the studies of SGAs were of lower quality. The 2 best-designed studies employed FGAs. Furthermore, as the investigators suggest, the subjects of SGA studies may have failed treatment with FGAs and may have been more treatment-resistant. A flaw in the meta-analysis is exclusion of unpublished data, omission of which may have, conceivably, led to overestimation of response rates.
The major finding of this meta-analysis is that the evidence base for pharmacotherapy of childhood schizophrenia is poor, reflecting a paucity of medication trials most of which are of low quality. The data on adverse effects is likewise deficient and lacks standardized reporting. The conclusion for clinicians is that FGAs seem to be an appropriate and relatively safe choice, but long-term outcomes and risk of tardive dyskinesia are not addressed in this article.
Randall White, MD, Psychiatrist, St. Paul's Hospital, Vancouver, Canada, British Columbia; Andro Giorgadze, MD, Staff Physician, Sumter Regional Hospital, Americus, Georgia
Disclosure: Randall F. White, MD, has disclosed that he owns stock, stock options, or bonds in Roche Holding AG, GlaxoSmithKline PLC, Novartis AG, Merck KGaA, sanofi-aventis, and Novo Nordisk.
Disclosure: Andro Giorgadze, MD, has disclosed no relevant financial relationships.
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