FDA OKs Botox Expanded Indication
FDA has approved Allergan’s Botox (onabotulinumtoxinA) for treating lower limb spasticity in adult patients to decrease the severity of increased stiffness in ankle and toe muscles. The drug was first approved in 2010 for treating upper limb spasticity (ULS), or increased muscle stiffness in the elbow, wrist and fingers. Additional approval was granted last year to expand its use for treating adults with ULS to include the addition of two thumb muscles.
The latest approval, according to the company, was based on a large, international development program that evaluated the safety and efficacy of Botox compared to placebo in more than 400 patients with lower limb spasticity following stroke. “Statistically significant improvements were observed in the two co-primary endpoints of average change from baseline in the improvement of muscle tone measured by the Modified Ashworth Scale ankle score and the clinical benefit for patients as assessed by the Clinical Global Impression of Change by Physician at weeks four and six (p<0.05),” Allergan says.