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Neuroreport. 1998 Nov 16;9(16):3595-9.

Short CAG repeats within the hSKCa3 gene associated with schizophrenia: results of a family-based study.

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Department of Psychiatry, University of Würzburg, Germany.


In a family-based association study we investigated transmission of a multiallelic CAG repeat in a novel neuronal potassium channel gene, hSKCa3, in 59 parent/ offspring trios. In contrast to recent reports of an association of moderately large repeats with schizophrenia in case-control studies, our findings indicate that short CAG repeats (< or=19 repeats) are transmitted at an increased frequency to schizophrenic offspring (p=0.014), particularly among familial cases (p=0.007). No evidence for a parent-of-origin effect was found. Multiallelic TDT procedure showed no association of individual CAG repeats to schizophrenia. Further studies using family-based designs should clarify whether hSKCa3 is a susceptibility factor to schizophrenia or co-segregates with a major disease gene in tight linkage.

[Indexed for MEDLINE]

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