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BioMed Central, BMC Psychiatry, 1(5), 2005

DOI: 10.1186/1471-244x-5-23

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No evidence for association between polymorphisms in GRM3and schizophrenia

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract Background Three studies have previously reported data that were interpreted by the authors as supportive of association between schizophrenia and polymorphisms in the gene encoding the metabotropic glutamate receptor GRM3. Methods In a bid to examine this hypothesis, we examined seven SNPs spanning GRM3 in a UK case-control sample (schizophrenic cases n = 674, controls n = 716). These included all SNPs previously reported to be associated, alone or in haplotypes, with schizophrenia in European or European American samples. Results Our data showed no evidence for association with single markers, or 2, 3, 4 and 5 marker haplotypes, nor did any specific haplotypes show evidence for association according to previously observed patterns. Conclusion Examination of our own data and those of other groups leads us to conclude that at present, GRM3 should not be viewed as a gene for which there is replicated evidence for association with schizophrenia.