Genetics of Recurrent Early-Onset Depression

Status Completed

Clinical Trial Summary

This nationwide study will create a DNA collection to permit qualified scientists to search for depression-related genes.

More than 750 families with at least two siblings who have experienced major depression are needed for the study. Participants will be interviewed about psychiatric and family history, and will be asked to provide a small blood specimen. The identification of predisposing genes can lead to greater understanding of the brain mechanisms involved in severe depression which can in turn lead to the discovery of new treatments.

A Certificate of Confidentiality from the federal government ensures that all information will be strictly confidential. Blood specimens are identified only by code number (not by name).

Reimbursement is provided.

Clinical Trial Description

Studies of patterns of major depression in families suggest that 50 to 70% of the predisposition to major depression is caused by genes. People with recurrent depression and earlier ages of onset have more relatives with depression. There are probably at least several interacting genes, rather than a single gene as in some disorders. The identification of predisposing genes is likely to lead to greater understanding of the brain mechanisms involved in severe depression. This could lead to the discovery of new treatments.

This study will create a DNA collection to permit qualified scientists to search for depression-related genes. More than 750 families with at least two siblings who have experienced major depression are needed for the study.

Participants in this study will be interviewed about psychiatric and family history, and will be asked for a small blood specimen. Interviews can be conducted in person or by telephone. For telephone interviews, blood sample collection will be arranged at a location and time convenient for the participant. Participants will also be asked for help in inviting other family members to participate. No family member will be contacted without the permission and assistance of another participating family member.

For information on a related study, please follow this link:

http://clinicaltrials.gov/show/NCT00260182 ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00005914
Study type	Observational
Source	Stanford University
Contact
Status	Completed
Phase
Start date	October 1999
Completion date	October 2005

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Genetics of Recurrent Early-Onset Depression — GenRED

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms