NCT00273624

Olanzapine Augmentation Therapy in Treatment-resistant Depression: a Double-blind Placebo-controlled Trial

• Status: Withdrawn
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 0 (actual)
• Sponsor: University Hospital Freiburg · Academic / Other
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Not accepted

Summary

60 patients with major depression will be treated with 10 mg Olanzapine or Placebo for 2 weeks. In case of response (reduction of depressive symptoms)the study will be continued for further 60 days.

Detailed description

The study is using a randomized double-blind, parallel-group, placebo-controlled design. 30 patients per treatment group will be included into the study and randomized to the treatment groups using a computer program. Psychotic features of depression will be excluded by a score of 2 or less in the PANSS subscales P1, P3 and P6. Treatment resistance as defined by history of non-response to two antidepressants from different classes at an acceptable dose and period is confirmed retrospectively. If possible, treatment compliance should be confirmed by plasma level examination. After informed consent, visit 1 is performed on day 0 (inclusion criteria, history, demographics, physical examination, vital signs, HAMD, MADRS, CGI, lab). Study medication is started on day 1, the antidepressive therapy is continued at stable dose until the end of the study. Patients will receive a double-blind therapy of either 10 mg/d olanzapine or placebo. Study visits will be performed on days 4, 7, and 14 (visits 2-4: vital signs, HAMD, MADRS, CGI, lab). After 14 days, the patients will be classified as responders or non-responders. A responder is defined by a reduction of the initial HAM-D score of more than 50%. Study treatment will be stopped in non-responders and continued in a double-blind manner in responders for further 60 days. Thereafter, the the study medication is stopped and the patients are observed for further 14 days. Study visits will be performed every 14 days. This extension phase was added to examine if a prolonged treatment with olanzapine could ensure a sustained treatment effect. It should be excluded that olanzapine has a short-term tranquillizer-like effect or leads to unfavourable medium- to-long-term depressiogenic effects as observed with other neuroleptics used in depression ( e.g. fluspirilene). Moreover, withdrawal effects should be excluded.

Conditions

• Therapy-resistant Depression

Interventions

Type	Name	Description
DRUG	Olanzapine	10 mg Olanzapin concurrent to antidepressive medication
DRUG	Placebo	placebo

Timeline

• Start date: 2005-06-01
• Primary completion: 2009-12-01
• Completion: 2009-12-01
• First posted: 2006-01-09
• Last updated: 2022-08-10

Locations

1 site across 1 country: Germany