Family, twin and adoption studies highlight the influence of genes in the aetiology of schizophrenia, though the mode of inheritance is unclear. We have been conducting a systematic search for major genes in schizophrenia using a series of multiply affected families and report preliminary results of linkage under heterogeneity with markers on chromosome 13. A lod2 score of 1.61 for marker D13S144 was obtained at theta = 0 and alpha of 0.5 and nearby markers also produced positive values.

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http://dx.doi.org/10.1097/00041444-199505030-00004DOI Listing

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