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Folly Beach Library
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Miss Jane's Building (Edisto Library Temporary Location)
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Main Library
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West Ashley Library
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Behavioral Comparisons in Autistic Individuals from Multiplex and Singleton Families.
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- Author(s): Cuccaro, Michael L.; Shao, Yujun; Bass, Meredyth P.; Abramson, Ruth K.; Ravan, Sarah A.; Wright, Harry H.; Wolpert, Chantelle M.; Donnelly, Shannon L.; Pericak-Vance, Margaret A.
- Source:
Journal of Autism & Developmental Disorders. Feb2003, Vol. 33 Issue 1, p87. 5p. - Source:
- Additional Information
- Subject Terms:
- Abstract: Autistic disorder (AD) is a complex neurodevelopmental disorder. The role of genetics in AD etiology is well established, and it is postulated that anywhere from 2 to 10 genes could be involved. As part of a larger study to identify these genetic effects we have ascertained a series of AD families: Sporadic (SP, 1 known AD case per family and no known history of AD) and multiplex (MP, ≥2 cases per family). The underlying etiology of both family types is unknown. It is possible that MP families may constitute a unique subset of families in which the disease phenotype is more likely due to genetic factors. Clinical differences between the two family types could represent underlying genetic heterogeneity. We examined ADI-R data for 69 probands from MP families and 88 from SP families in order to compare and contrast the clinical phenotypes for each group as a function of verbal versus nonverbal status. Multivariate analysis controlling for covariates of age at examination, gender, and race (MANCOVA) revealed no differences between either the verbal or nonverbal MP and SP groups for the three ADI-R area scores: social interaction, communication, and restricted/repetitive interests or behaviors. These data failed to find clinical heterogeneity between MP and SP family types. This supports previous work that indicated that autism features are not useful as tools to index genetic heterogeneity. Thus, although there may be different underlying etiologic mechanisms in the SP and MP probands, there are no distinct behavioral patterns associated with probands from MP families versus SP families. These results suggests the possibility that common etiologic mechanisms, either genetic and/or environmental, could underlie all of AD. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Journal of Autism & Developmental Disorders is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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