Genetics of Recurrent Early Onset Major Depression
Genetics of Recurrent Early Onset Major Depression
This study will identify specific genes that may cause a predisposition to depression in some
 families.
Depression is a serious medical illness that is often difficult to diagnose and treat.
 Studies on patterns of depression within families suggest that inherited genes may cause a
 predisposition to the disorder. People with early onset depression often have more relatives
 with depression than people whose depression does not begin until later in life. It is likely
 that several interacting genes cause this tendency towards the disorder, rather than one
 specific gene. This study will serve to identify particular genes that may cause a
 susceptibility to depression in order to better understand the brain mechanisms involved with
 severe depression. In turn, this may aid in the development of new treatments for depression.

 Participation in this observational study will entail one interview and one blood test.
 Participants will be interviewed, either in person or by telephone, about their personal and
 family psychiatric history. The blood sample will be collected at a time and location that is
 convenient for the participant. Participants may also be asked to invite other family members
 to participate in the study.

 For information on a related study please follow this link:

 http://clinicaltrials.gov/show/NCT00005914
Inclusion Criteria:

 -  History of recurrent major depression

 -  Has a parent or sibling with a history of recurrent major depression

 -  Depression began before the age of 31

 Exclusion Criteria:

 -  Bipolar I (manic-depressive) disorder

 -  Schizophrenia