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Segregation analysis of obsessive-compulsive disorder using symptom-based factor scores.
- Source :
-
American journal of medical genetics [Am J Med Genet] 1999 Dec 15; Vol. 88 (6), pp. 669-75. - Publication Year :
- 1999
-
Abstract
- Obsessive-compulsive disorder (OCD) is a complex psychiatric disorder characterized by recurring obsessions or compulsions that cause significant distress to the patient or significantly interfere with the patient's normal home, work, or social activities [Diagnostic and Statistical Manual of Mental Disorders, 4th Edition. Washington, DC: American Psychiatric Association, 1994]. Twin and family studies have suggested that OCD has a significant genetic component. We performed complex segregation analyses using POINTER with families ascertained through an OCD-affected proband. In an attempt to resolve the phenotypic heterogeneity observed among individuals with OCD these segregation analyses used four factor-analytic symptom dimensions to subset the family sample based upon probands' symptom factor scores. Analysis of the entire sample allowed rejection of only the no transmission model; that model was also rejected in all subsequent analyses. Limiting the analyses to families with at least one OCD-affected member in addition to the proband (the demonstrably familial form of OCD) allowed rejection of all models except the mixed model. Analyses limited to families of high-factor-3 (symmetry and ordering symptoms) probands led to rejection of the polygenic model, indicating the involvement of a major locus. Additionally, the relative risk of OCD or subclinical OCD was 1.7 for relatives of probands with a factor 3 score greater than zero compared with relatives of probands with a low factor score. The symptoms attributed to high factor 3 scores (symmetry and ordering) may constitute a genetically significant symptomatic subtype of OCD. Am. J. Med. Genet. (Neuropsychiatr. Genet.) 88:669-675, 1999.<br /> (Copyright 1999 Wiley-Liss, Inc.)
- Subjects :
- Aging
Family Health
Female
Genes, Dominant genetics
Genes, Recessive genetics
Humans
Likelihood Functions
Male
Models, Genetic
Multifactorial Inheritance genetics
Psychological Tests
Behavioral Symptoms
Chromosome Segregation
Compulsive Personality Disorder genetics
Compulsive Personality Disorder psychology
Genetic Predisposition to Disease genetics
Subjects
Details
- Language :
- English
- ISSN :
- 0148-7299
- Volume :
- 88
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- American journal of medical genetics
- Publication Type :
- Academic Journal
- Accession number :
- 10581488
- Full Text :
- https://doi.org/10.1002/(sici)1096-8628(19991215)88:6<669::aid-ajmg17>3.0.co;2-n