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A Twin Study of Tourette Syndrome
Abstract
In 43 pairs of same-sex twins, in which at least one co-twin had Tourette syndrome (TS), 30 pairs were probably monozygotic (MZ) and 13 were probably dizygotic (DZ). Concordances for TS were 53% and 8% for MZ and DZ pairs, respectively. When diagnostic criteria were broadened to include any tics in co-twins, concordance rates were 77% and 23% for MZ and DZ pairs, respectively. These concordances are consistent with genetic etiology. However, the fact that only 53% of MZ twins were fully concordant indicates nongenetic factors affect expression of TS. Presence of tics in discordant co-twins and timing of onset in partially concordant co-twins support an association between TS and tics in families with TS present. The data are inconclusive on whether some MZ twins with discordant co-twins are etiologically different from those who are concordant.
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Cited by
Executive functions and developmental psychopathology.
Pennington, B. F., & Ozonoff, S. (1996) · Journal of Child Psychology and Psychiatry · doi:10.1111/j.1469-7610.1996.tb01380.x · Cited by 3,150
Genetic and environmental influences on human psychological differences
Bouchard, T. J., & McGue, M. (2003) · Journal of Neurobiology · doi:10.1002/neu.10160 · Cited by 870
PETERSON, B. S., PINE, D. S., COHEN, P., & BROOK, J. S. (2001) · Journal of the American Academy of Child & Adolescent Psychiatry · doi:10.1097/00004583-200106000-00014 · Cited by 335
Wolf, S. S., Jones, D. W., Knable, M. B., Gorey, J. G., Lee, K. S., Hyde, T. M., Coppola, R., & Weinberger, D. R. (1996) · Science · doi:10.1126/science.273.5279.1225 · Cited by 252
Neurobiology of Tourette Syndrome: Current Status and Need for Further Investigation: Table 1.
Felling, R. J., & Singer, H. S. (2011) · The Journal of Neuroscience · doi:10.1523/jneurosci.0150-11.2011 · Cited by 227
Metadata
- Authors
- Price, R. A.
- Venue
- Archives of General Psychiatry
- Publisher
- American Medical Association (AMA)
- Published
- 1985-08-01
- Volume
- 42
- Issue
- 8
- Pages
- 815
- ISSN
- 0003-990X (ISSN-L)
- OpenAlex
- W2095933386
- Cited by
- 349
- References
- 0
- FWCI
- 6.92
- Type
- journal article
- Language
- en
- Open access
- closed
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