WASHINGTON, Feb. 5, 2024 -- Vanda Pharmaceuticals Inc. (Vanda) (Nasdaq: VNDA) announced that on February 4, 2024, it received a notification from the U.S. Food and Drug Administration (FDA) stating that as part of its ongoing review of Vanda's supplemental New Drug Application (sNDA) for HETLIOZ® (tasimelteon) in the treatment of insomnia characterized by difficulties with sleep initiation, the FDA has identified deficiencies that preclude discussion of labeling and postmarketing requirements/commitments at this time. No deficiencies were disclosed by the FDA in the notification, and the FDA stated that the notification does not reflect a final decision on the information under review. In a letter to Vanda dated July 17, 2023, the FDA had assigned a Prescription Drug User Fee Act target date of March 4, 2024 for the completion of its review of the sNDA.
Vanda has extensively studied the efficacy of HETLIOZ® in the treatment of insomnia characterized by difficulties with sleep initiation. A Phase III, multi-center, placebo-controlled, 4-week trial evaluated patients with chronic primary insomnia. Two transient insomnia studies induced by phase advance of the sleep-wake cycle were also conducted with five-hour and eight-hour phase advance, which showed a significant effect the first night in improving sleep parameters... Vanda Pharmaceuticals' Press Release [PDF] -
