Genomewide High-Density SNP Linkage Analysis of 236 Japanese Families Supports the Existence of Schizophrenia Susceptibility Loci on Chromosomes 1p, 14q, and 20p
详细信息 查看全文
- 作者：The Japanese Schizophrenia Sib-Pair Linkage Group (JSSLG) ; Tadao Arinami ; Tsuyuka Ohtsuki ; Hiroki Ishiguro ; Hiroshi Ujike ; Yuji Tanaka ; Yukitaka Morita ; Mari Mineta ; Masashi Takeichi ; Shigeto Yamada ; Akira Imamura ; Koichi Ohara ; Haruo Shibuya ; Kenshiro Ohara ; Yasuo Suzuki ; Tatsuyuki Muratake ; Naoshi
- 刊名：The American Journal of Human Genetics
- 出版年：2005
- 出版时间：December 2005
- 年：2005
- 卷：77
- 期：6
- 页码：937-944
- 全文大小：303 K
文摘
The Japanese Schizophrenia Sib-Pair Linkage Group (JSSLG) is a multisite collaborative study group that was organized to create a national resource for affected sib pair (ASP) studies of schizophrenia in Japan. We used a high-density single-nucleotide–polymorphism (SNP) genotyping assay, the Illumina BeadArray linkage mapping panel (version 4) comprising 5,861 SNPs, to perform a genomewide linkage analysis of JSSLG samples comprising 236 Japanese families with 268 nonindependent ASPs with schizophrenia. All subjects were Japanese. Among these families, 122 families comprised the same subjects analyzed with short tandem repeat markers. All the probands and their siblings, with the exception of seven siblings with schizoaffective disorder, had schizophrenia. After excluding SNPs with high linkage disequilibrium, we found significant evidence of linkage of schizophrenia to chromosome 1p21.2-1p13.2 (LOD=3.39) and suggestive evidence of linkage to 14q11.2 (LOD=2.87), 14q11.2-q13.2 (LOD=2.33), and 20p12.1-p11.2 (LOD=2.33). Although linkage to these regions has received little attention, these regions are included in or partially overlap the 10 regions reported by Lewis et al. that passed the two aggregate criteria of a meta-analysis. Results of the present study—which, to our knowledge, is the first genomewide analysis of schizophrenia in ASPs of a single Asian ethnicity that is comparable to the analyses done of ASPs of European descent—indicate the existence of schizophrenia susceptibility loci that are common to different ethnic groups but that likely have different ethnicity-specific effects.