PMID- 19209252 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20111110 LR - 20211020 IS - 1176-6336 (Print) IS - 1178-203X (Electronic) IS - 1176-6336 (Linking) VI - 4 IP - 4 DP - 2008 Aug TI - Double-blind, randomized trial comparing efficacy and safety of continuing olanzapine versus switching to quetiapine in overweight or obese patients with schizophrenia or schizoaffective disorder. PG - 713-20 AB - We examined the potential risks and benefits of switching from olanzapine to quetiapine in mentally stable, obese, or overweight patients with schizophrenia or schizoaffective disorder. Patients receiving olanzapine were randomized to continuing olanzapine treatment (N =68; 7.5-20 mg/day) or switching to quetiapine (N =65; 300-800 mg/day). Time to relapse was the primary study objective; secondary objectives included changes in weight, metabolic parameters, and psychiatric symptoms, and discontinuation rates. No significant difference in time to relapse was observed (p =0.293), but significantly more patients remained on treatment in the olanzapine group compared with the quetiapine group (70.6% vs 43.1%; p =0.002). Olanzapine-treated patients had significantly lower rates of study discontinuation for lack of efficacy and psychiatric adverse events (AEs) compared to quetiapine (2.94% vs 15.38%, p =0.015). Significantly more patients in the olanzapine group experienced an increase in BMI >/=1 kg/m(2). Olanzapine-treated patients experienced significantly greater increases in weight from Weeks 2 through 13. Switching patients with stable disease from olanzapine to quetiapine did not significantly shorten time to relapse, but produced more frequent study discontinuations due to lack of efficacy or psychiatric AEs with moderate but variable improvement in weight and no significant between-group differences in mean changes in metabolic laboratory parameters. FAU - Deberdt, Walter AU - Deberdt W AD - Eli Lilly Benelux, Eli Lilly and Company, Brussels, Belgium. deberdt_walter@lilly.com FAU - Lipkovich, Ilya AU - Lipkovich I FAU - Heinloth, Alexandra N AU - Heinloth AN FAU - Liu, Lin AU - Liu L FAU - Kollack-Walker, Sara AU - Kollack-Walker S FAU - Edwards, Sara E AU - Edwards SE FAU - Hoffmann, Vicki Poole AU - Hoffmann VP FAU - Hardy, Thomas A AU - Hardy TA LA - eng PT - Journal Article PL - New Zealand TA - Ther Clin Risk Manag JT - Therapeutics and clinical risk management JID - 101253281 PMC - PMC2621385 OTO - NOTNLM OT - BMI OT - antipsychotic switching OT - discontinuation OT - relapse OT - weight EDAT- 2009/02/12 09:00 MHDA- 2009/02/12 09:01 PMCR- 2008/12/01 CRDT- 2009/02/12 09:00 PHST- 2009/02/12 09:00 [entrez] PHST- 2009/02/12 09:00 [pubmed] PHST- 2009/02/12 09:01 [medline] PHST- 2008/12/01 00:00 [pmc-release] AID - tcrm-4-713 [pii] AID - 10.2147/tcrm.s3153 [doi] PST - ppublish SO - Ther Clin Risk Manag. 2008 Aug;4(4):713-20. doi: 10.2147/tcrm.s3153.