An Open Label Trial of TMS Therapy for Bipolar Depression

The investigators propose to screen patients with bipolar depression I or II, who are already on acceptable mood stabilization. They may or may not be on antidepressants at the time of screening but subjects on antidepressants would be taken off them before completing the screening phase. Those patients who have a depression of at least moderate severity without significant symptoms of activation or mania will be started on a course of open label TMS treatment of up to 35 sessions. Safety and efficacy assessments will be done weekly. Patients will complete a course of treatment when they meet remission criteria (MADRS score \< 10) or at the end of 30 treatments, whichever comes first. Patient who are still judged to be improving between treatment 25 and treatment 30 will be eligible to complete up to five addition treatments as the discretion of each site's principal investigator. Patients who meet response criteria (MADRS score decreases by at least 50%) will complete the full course of 30 to 35 TMS sessions. Patients will be withdrawn for safety concerns, particularly the onset of activation suggestive of mania or a mixed state. Patients who meet response or remission criteria will be followed monthly for up to six months to evaluate the durability of response. They will be on standard mood stabilizing medications and psychotherapy per their clinician's discretion.