Abstract
Previously reported linkage of bipolar affective disorder to DNA markers in the pericentromeric region of chromosome 18 was reexamined in a larger homogeneous sample of Old Order Amish families. Four markers (D18S21, D18S53, D18S44, and D18S40) were examined in three kindreds containing 31 bipolar 1 (BP I) individuals. Although linkage findings were replicated in the one previously studied Amish pedigree containing four BP l individuals, linkage to this region was excluded in the larger sample. If a susceptibility locus for bipolar disorder is located in this region of chromosome 18, it is of minor significance in this population.
Original language | English |
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Pages (from-to) | 636-643 |
Number of pages | 8 |
Journal | American journal of human genetics |
Volume | 57 |
Issue number | 3 |
State | Published - Sep 1995 |