Effectiveness and Safety of Atypical Antipsychotic Agents in Augmenting SSRI-Refractory Obsessive-Compulsive Disorder

NCT ID: NCT00854919

Last Updated: 2009-03-03

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE4
• Study Classification: INTERVENTIONAL
• Study Start Date: 2006-01-31
• Study Completion Date: 2007-12-31

Brief Summary

Objective: Although atypical antipsychotic drugs (AAPDs) have been found effective in the augmentation of serotonin reuptake inhibitors (SRIs) for treatment-resistant obsessive-compulsive disorder (OCD) in short terms trials, there are few data on the effectiveness and safety of these agents in clinical settings over the long term.

Method: Subjects (n=46) who responded to selective SRIs (SSRIs) in an initial 12-week trial were continued on SRI-monotherapy plus cognitive-behavioral therapy (CBT) for one year. Subjects (n=44) who failed to respond to SSRIs were randomly assigned to one of 3 AAPDs such as risperidone and were consecutively treated using SSRI+AAPD combined with CBT for a year.

Detailed Description

More recently, second-generation atypical antipsychotic drugs (AAPD) that modulate both 5-HT and DA function, such as risperidone (RIS), olanzapine (OLZ) and quetiapine (QET), have been found effective in the augmentation of SSRIs for treatment-resistant OCD.

Nevertheless, the AAPDs have been associated with common and serious adverse effects, such as body weight (BW) gain and metabolic dysregulation. Metabolic dysregulation includes glucoregulatory dysfunction and dyslipidemia. Indeed, studies of some AAPD in SSRI-refractory OCD patients have similarly reported significant BW gain. AAPD-induced BW gain may influence patients' adherence to medication and places them at risk for a broad range of medical problems.

Most work on AAPDs in treatment-refractory OCD has been conducted in the form of short-term efficacy studies. There have been fewer studies of the effectiveness, safety, and tolerability of these agents in the context of a clinic where CBT is also provided, and where treatment is continued for a significant period of time. In the current effectiveness study, we sought to examine the response of SSRI-refractory patients to augmentation with AAPDs, comparing adverse events in such compared to a control group of SSRI responders.

Conditions

SSRI-Refractory Obsessive-Compulsive Disorder

Study Groups

CBT

All subjects received cognitive-behavioral therapy (CBT) during the study period.

Group Type: EXPERIMENTAL

exposure response prevention

Intervention Type: BEHAVIORAL

After at least 12 weeks from treatment initiation, cognitive-behavioral therapy (CBT) using exposure and response prevention was added with psychoeducational interventions and behavioral analysis.

1

Drug; Paroxetine (30-50mg/D)or Fluvoxamine (150-250mg/D), 1-year administration

Group Type: EXPERIMENTAL

atypical antipsychotic drug

Intervention Type: DRUG

For SSRI-refractory group, either atypical antipsychotic such as mean doses of RIS (3.1±1.9mg/day), of OLZ (5.1±3.2mg/day), and of QET (60.0±37.3mg/day) was added on ongoing SSRI(Paroxetine, Fluvoxamine).

exposure response prevention

Intervention Type: BEHAVIORAL

After at least 12 weeks from treatment initiation, cognitive-behavioral therapy (CBT) using exposure and response prevention was added with psychoeducational interventions and behavioral analysis.

2

Either risperidone (1-5mg/D), olanzapine (1-5mg/D) or quetiapine (25-100mg/D) was added to ongoing SSRI, the combination trial was continued at least for half a year.

Group Type: ACTIVE_COMPARATOR

atypical antipsychotic drug

Intervention Type: DRUG

For SSRI-refractory group, either atypical antipsychotic such as mean doses of RIS (3.1±1.9mg/day), of OLZ (5.1±3.2mg/day), and of QET (60.0±37.3mg/day) was added on ongoing SSRI(Paroxetine, Fluvoxamine).

exposure response prevention

Intervention Type: BEHAVIORAL

After at least 12 weeks from treatment initiation, cognitive-behavioral therapy (CBT) using exposure and response prevention was added with psychoeducational interventions and behavioral analysis.

Interventions

atypical antipsychotic drug

For SSRI-refractory group, either atypical antipsychotic such as mean doses of RIS (3.1±1.9mg/day), of OLZ (5.1±3.2mg/day), and of QET (60.0±37.3mg/day) was added on ongoing SSRI(Paroxetine, Fluvoxamine).

Intervention Type: DRUG

exposure response prevention

After at least 12 weeks from treatment initiation, cognitive-behavioral therapy (CBT) using exposure and response prevention was added with psychoeducational interventions and behavioral analysis.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Male or female, 18 years of age or over
• Patients were diagnosed as having obsessive-compulsive disorder by the Structured Clinical Interview for DSM-IV Patient version (SCID-P)
• They received standardized treatment for at least 1 year at the OCD clinic in our university hospital.
• Each subject gave written informed consent to take part after receiving a complete description of this study.
• All subjects were free of medical illness based on results of physical examination and screening tests of blood and urine, and no subjects received any lipid lowering or hypoglycemic agent during the 1-year study period.

Exclusion Criteria

• Current clinically significant medical conditions such as diabetes

• Minimum Eligible Age: 20 Years
• Maximum Eligible Age: 50 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Osaka City University

OTHER

Sponsor Role: lead

Locations

Dept of Neuropsychiatry, Osaka City University, graduate School of Medicine

Osaka, Osaka, Japan

Countries

Japan

References

Matsunaga H, Nagata T, Hayashida K, Ohya K, Kiriike N, Stein DJ. A long-term trial of the effectiveness and safety of atypical antipsychotic agents in augmenting SSRI-refractory obsessive-compulsive disorder. J Clin Psychiatry. 2009 Jun;70(6):863-8. doi: 10.4088/JCP.08m04369. Epub 2009 May 5.

Reference Type: DERIVED

PMID: 19422759 (View on PubMed)

Other Identifiers

18591305

Identifier Type: -

Identifier Source: org_study_id