We investigated 38 Chinese psoriasis families with 19 reported microsatellite markers. Families comprised a total of 96 affected and 92 unaffected individuals. Genotyping results were analyzed using parametric and nonparametric linkage analysis. Our results confirmed the published linkage with the PSORS1 locus, as well as the PSORS2 locus, which has not been previously shown in the Chinese population. Significant two-point LOD scores were obtained in a parametric linkage analysis with markers D6S1610 and D17S944. Nonparametric linkage values greater than 1.6 ( P<0.05) were obtained with markers D6S1610, D17S944 and D17S785.

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