Genetic Research in Schizophrenia

This study has been completed.
Information provided by (Responsible Party):
VA Office of Research and Development Identifier:
First received: April 14, 2005
Last updated: November 1, 2012
Last verified: November 2012
Schizophrenia has long been known to be an illness with significant evidence for a genetic predisposition. The purpose of this study is to determine the genetic abnormalities that cause childhood and adult onset schizophrenia.


Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective
Official Title: Genetic Research in Schizophrenia

Resource links provided by NLM:

Further study details as provided by VA Office of Research and Development:

Primary Outcome Measures:
  • Genetic Association [ Time Frame: ten years ] [ Designated as safety issue: No ]

Biospecimen Retention:   Samples With DNA

Enrollment: 538
Study Start Date: January 2004
Study Completion Date: December 2008
Primary Completion Date: December 2008 (Final data collection date for primary outcome measure)

Detailed Description:
It is known from genetic linkage and gene expression studies that the alpha 7 nicotinic receptor gene is abnormally expressed in people with schizophrenia. The immediate objectives of this proposal support the long-term objectives of a comprehensive description of the pathophysiology of schizophrenia and new drug treatments by carefully defining the physiological genotype-phenotype relationship for a single candidate gene. Subjects and family members with a mental illness or who appear to have a mental illness will be asked to undergo an interview, perform some mental tests and have a blood, urine, and saliva sample taken one time.

Ages Eligible for Study:   1 Year and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Persons with schizophrenia

Inclusion Criteria:

  • Individuals thought to have schizophrenia or schizoaffective disorder, be the parent of such an individual, or be in the matched control group of unrelated individuals not thought to have schizophrenia or schizoaffective disorder

Exclusion Criteria:

  • Unable to give informed consent;
  • Psychotic disorder judged to be secondary to substance abuse, psychotic disorder that appears to be secondary to a known medical or neurological disorder, or severe mental retardation
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00108303

United States, Colorado
VA Eastern Colorado Health Care System, Denver
Denver, Colorado, United States, 80220
Sponsors and Collaborators
VA Office of Research and Development
Principal Investigator: Robert Freedman, MD VA Eastern Colorado Health Care System, Denver
  More Information

No publications provided

Responsible Party: VA Office of Research and Development Identifier: NCT00108303     History of Changes
Other Study ID Numbers: ADRD-007-03S
Study First Received: April 14, 2005
Last Updated: November 1, 2012
Health Authority: United States: Federal Government

Keywords provided by VA Office of Research and Development:

Additional relevant MeSH terms:
Mental Disorders
Schizophrenia and Disorders with Psychotic Features processed this record on December 01, 2015