ResultsIncluding all family trios regardless of proband diagnosis, we found six markers associated with susceptibility to psychotic disorders., including D22S420 (χ2=4.76, df=1, P=0.029)%3001D22S277 (χ2=5.44, df=1, P=0.020)%3001D22s315 (allele 5, χ2=7.00, df=1, P=0.008; allele 7, χ2=-4.83, df=1, P=0.028; allele 11, χ2=4.00, df=1, P=0.046)%3001D22S274 (allele 7, χ2=-5.40, df=1, P=0.020; allele 10, χ2=6.23 df=1, P=0.013)%3001D22S1160 (χ2=-4, df=1, P=0.046) and D22S1161 (χ2=5.14, df=1, P=0.023). When grouped separately into schizophrenia and mood disorder according to proband diagnosis, four markers D22S420(χ2=7.36, df=1, P=0.007) %3001D22S315 (allele 5, χ2=4., df=1, P=0.046; allele 7, χ2=-8.89, df=1, P=0.003)%3001D22S1161(χ2=6.23, df=1, P=0.013) and D22S280 (χ2=4, df=1, P=0.046) were significantly associated with schizophrenia, but were not significantly associated with mood disorder, D22S274(allele 7, χ2=5., df=1, P=0.025; allele 10, χ2=6, df=1, P=0.014) were significantly associated with mood disorder only, and D22S277(χ2=4, df=1, P=0.046) was associated with both schizophrenia and mood disorder.