Bexarotene and Fenretinide as Addition to Antipsychotic Treatment in Schizophrenia Patients

NCT ID: NCT00534898

Last Updated: 2010-06-29

Basic Information

• Recruitment Status: WITHDRAWN
• Clinical Phase: PHASE3
• Study Classification: INTERVENTIONAL

Brief Summary

Background: In this proposed study, we aim to investigate safety and efficacy of two synthetic retinoids - bexarotene (Targretin; LGD1069; 4-[1-{5,6,7,8-tetrahydro-3,5,5,8,8-pentamethyl-2-naphthalenyl} ethenyl] benzoic acid) and fenretinide (Dihydroceramide N-(4-Hydroxyphenyl retinamide) on severity of psychopathology and cognitive impairment in schizophrenia patients in an double-blind, placebo-controlled study. The rationale behind add-on these medications to ongoing antipsychotic treatment in schizophrenia patients is based on both the retinoid dysregulation hypothesis: the growth factors deficiency and synaptic destabilization hypothesis of schizophrenia. Furthermore, in our preliminary open clinical trial, we found that a low dose of bexarotene (Targretin, 75 mg/day) was safe and led to significant improvement on total PANSS scores, general psychopathology, on the positive and the dysphoric mood factor scores. The aim of the present study was to provide further insight into the safety and efficacy of bexarotene in comparison to fenretinide (a medication with smaller potential of adverse effects) and placebo in patients suffered from schizophrenia.

Detailed Description

In this clinical trial, a minimal dose of bexarotene (Targretin, 75 mg/day) or fenretinide 5 mg/day or placebo will be added for 8 weeks to the stable ongoing antipsychotic treatment of 90 schizophrenia patients. Participants will be assessed at baseline and after 2, 4 and 8 weeks of treatment. A battery of research instruments will be used for assessment of efficacy and safety (psychopathology, and side effects). In addition, cholesterol and triglyceride levels, liver and thyroid function tests and a blood cell count will be monitored at baseline and during therapy.

Conditions

Schizophrenia; Schizoaffective Disorder; Cognition

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: TRIPLE

Interventions

Bexarotene

Intervention Type: DRUG

Fenretinide

Intervention Type: DRUG

Placebo

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

1. Age 18-60 years, male or female

2. DSM-IV criteria for schizophrenia

3. Ability and willingness to sign informed consent for participation in the study

4. Stable blood parameters

5. Only patients who had a normal baseline fasting triglyceride

Exclusion Criteria

1. Lipid abnormalities.

2. Leukopenia or neutropenia.

3. Evidence of organic brain damage, mental retardation, alcohol or drug abuse

4. Renal disease

5. Hepatic dysfunction.

6. A history of pancreatitis.

7. Thyroid axis alterations

8. Suicide attempt in past year.

9. Cataracts.

10. High dose of vitamin A daily treatment.

11. Patients with a known hypersensitivity to bexarotene or other components of the product.

12. Pregnant women or a woman who intends to become pregnant.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Beersheva Mental Health Center

OTHER_GOV

Sponsor Role: lead

Principal Investigators

Vladimir Lerner, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Ben-Gurion University of the Negev

Chanoch Miodownik, MD

Role: STUDY_DIRECTOR

Ben-Gurion University of the Negev

Locations

Be'er Sheva Mental Health Center, Sha'ar Menashe Mental Health Center

Be'er Sheva, Hadera, , Israel

Countries

Israel

Other Identifiers

LMR250850MHC

Identifier Type: -

Identifier Source: org_study_id