Aripiprazole for the Treatment of Refractory Anxiety

Status Completed

Clinical Trial Summary

The purpose of this study is to determine whether aripiprazole is effective in the treatment of refractory panic and generalized anxiety disorder.

Clinical Trial Description

Accruing evidence demonstrates that the anxiety disorders are common and associated with significant morbidity and impairment. Although current first-line interventions are effective, many patients remain at least somewhat symptomatic, and some respond not at all, despite initial treatment. For instance, Generalized Anxiety Disorder (GAD) is a common distressing and disabling condition affecting 5% of the population. It is typically characterized by a chronic course and associated with significant psychosocial impairment and decreased quality of life (Simon and Pollack 2000). Although a number of therapeutic agents have demonstrated efficacy in the treatment of GAD, only a minority of anxious patients experience remission with initial treatment.

Panic disorder with or without agoraphobia is a common anxiety disorder, occurring in 3.5 % of the population (Kessler, et al., 1994). Although the study of panic disorder has advanced in recent years, with the availability of a growing number of treatments with reported efficacy in clinical trials and practice, acute and longitudinal follow-up studies of patients with panic disorder suggest that many individuals remain symptomatic despite treatment (Pollack and Otto, 1994). However, there is no systematic data currently available to guide the treatment of patients with panic disorder who remain symptomatic after initial intervention.

Thus, one purpose of this study is to examine the efficacy of the addition of aripiprazole, for the treatment of patients with GAD or panic disorder who remain refractory despite a treatment trial with an anxiolytic (e.g. antidepressant, benzodiazepine, buspirone). Aripiprazole is a novel antipsychotic agent with potent effects at the serotonergic, as well as dopaminergic receptor, and a more favorable side effect profile than standard neuroleptics, including a low potential to cause extrapyramidal symptoms.

The study period is a 9-week, acute treatment phase. Patients who meet inclusion criteria will receive aripiprazole for 8 weeks. Treatment will be initiated with 2.5 mg/day at the baseline visit, 5 mg/day aripiprazole for the first week and flexibly titrated up to a maximum of 30 mg/day over the next six weeks. Patients will be seen weekly for the first three weeks of this phase of treatment, and then at 2-week intervals for the remainder of the study. ;

Study Design

Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00438386
Study type	Interventional
Source	Massachusetts General Hospital
Contact
Status	Completed
Phase	Phase 4
Start date	April 2005
Completion date	June 2007

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