The Family/Genetic Study of Obsessive-Compulsive Disorder

Earlier studies suggest that an inborn tendency to develop obsessive-compulsive disorder runs in some families. However, most relatives will not develop the illness.

In our family studies we look for the genes that may be causing some family members to be at risk for a psychobiological disorder. As we discover the nature of each gene, we will be able to develop better treatments.

We urge individuals suffering from obsessive-compulsive disorder or related disorders, along with their family members, to participate in a scientific study that will help us better understand the causes of these disorders.

Participants contribute in three ways: a confidential questionnaire packet, an interview, and a sample of blood. Participants are paid $25 as thanks for their time in completing and returning the questionnaires. No travel is needed.

National Institute of Mental Health
Principal Investigator: 
Dennis L. Murphy, MD
Eligibility Criteria: 

Adults 18 or over with a diagnosis of obsessive-compulsive disorder and a family member who may or may not have the disorder. Participants do not need to live in the Bethesda, Maryland, area.

Diane Kazuba, 1-866-NIH-GENES (1-866-644-4363), or
Bethesda, MD

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ADAA is a national nonprofit organization dedicated to the prevention, treatment, and cure of anxiety and mood disorders, OCD, and PTSD and to improving the lives of all people who suffer from them through education, practice, and research.


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