Chromosomal regions comprising loci associated with susceptibility and resistance to bipolar affective disorder have been identified. Methods and compositions are provided for determining the contribution of these chromosomal regions to bipolar affective disorder in an affected family, for determining in an affected family a genotype associated with increased or decreased susceptibility or resistance to bipolar illness, and for assessing an increased or decreased risk of developing bipolar illness for a tested individual from an affected family.
Susceptability and resistance genes for bipolar affective disorder