Clinical Hold Lifted on Vanda’s Motion Sickness Studies

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FDA has lifted a partial clinical hold on one of Vanda Pharmaceuticals’ key tradipitant studies, clearing the company to expand dosing in an ongoing motion-sickness trial. The hold on protocol VP-VLY-686-3403 had previously capped dosing at 90 administrations of tradipitant. The FDA lifted that limitation after conducting an expedited re-review of the program, triggered by Vanda’s formal dispute resolution request. The reassessment was carried out within a collaborative framework the company and the agency established in October, according to Vanda.

In its decision, FDA agreed with Vanda that motion sickness is an acute, self-limiting physiologic response, not a chronic or chronic-intermittent condition, according to the company. As a result, the agency determined that tradipitant’s use for motion sickness should be treated as an acute, event-driven therapy — meaning an additional six-month dog toxicity study was unnecessary and the partial hold could be removed.

The ruling enables Vanda to continue and broaden its clinical development of tradipitant for motion sickness. Meanwhile, the company’s separate NDA for tradipitant as a preventive treatment for motion-induced vomiting remains under FDA review. That application has a user fee review action date of 12/30, placing tradipitant in a position to become the first new pharmacologic therapy for motion sickness in more than 40 years, if approved.

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