“It is estimated that 1.8 million adult Americans may suffer from spasticity1234, which in the upper arm can cause muscle stiffness, flexing, spasms, twitching and pain. We are pleased to offer another treatment option for those individuals with upper limb spasticity, a debilitating condition that often comes on the heels of a traumatic health event such as a stroke or brain injury,” said Cynthia Schwalm, Chief Executive Officer, Ipsen Biopharmaceuticals, Inc. “Spasticity can have a profound impact on adult patients and their abilities to perform the most basic daily tasks. Ipsen is committed to providing these patients, their caregivers and physicians with a comprehensive support offering including Dysport®, the IPSEN CARES™ patient assistance program, and the C.L.I.M.B. injector training platform for healthcare providers.”
The approval was based on a rigorous development program that included clinical trials conducted in over 600 patients. In the Phase III pivotal study, 238 adult patients with upper limb spasticity participated in the study for up to one year. The international, multi-center, double-blind, randomized, placebo-controlled study compared the efficacy of Dysport® (n=159) versus placebo (n=79) in hemiparetic patients following stroke or brain trauma. The trial also included patients who were botulinum toxin naïve or previously treated with a botulinum toxin, encompassing a broad patient population. The co-primary endpoints of the study were the improvement of muscle tone in the treated upper limb measured by the Modified Ashworth Scale (MAS) versus placebo and the clinical benefit for patients as assessed by the Physician Global Assessment (PGA) versus placebo at Week 4. The trial was followed by an open-label study wherein patients received Dysport® for up to five treatment cycles to assess the long term safety.