European regulators have granted conditional approval to Novartis company AveXis for the gene therapy Zolgensma (onasemnogene abeparvovec) for the treatment of paediatric patients with 5q spinal muscular atrophy (SMA).
“The EC approval of Zolgensma is a significant milestone for the SMA community, and further underscores the substantial clinical value of the only gene therapy for SMA, bringing new hope to those impacted by this rare, but devastating disease.” said Dave Lennon, President of AveXis.
“Even under the current pandemic conditions, the urgent need to treat SMA has resulted in access pathways in France and Germany for Zolgensma, a potentially life-saving medicine delivered in a single dose.
“Additionally, we have met with more than 100 stakeholder organizations across Europe to discuss our “Day One” access program to enable rapid access with customisable options designed to work within local pricing and reimbursement frameworks.”
The approval is based on the completed Phase 3 STR1VE-US and Phase 1 START trials that evaluated the efficacy and safety of a one-time IV infusion of Zolgensma in symptomatic SMA Type 1 patients <6 months of age at dosing, who had one or two copies of the SMN2 backup gene, or two copies of the SMN2 backup gene, respectively. STR1VE-EU, a comparable Phase 3 study is ongoing. Zolgensma demonstrated prolonged event-free survival; rapid motor function improvement, often within one month of dosing; and, sustained milestone achievement, including the ability to sit without support, crawl and walk independently – milestones never achieved in untreated Type 1 patients. Additional supportive data included interim results from the ongoing SPR1NT trial, a Phase 3, open-label, single-arm study of a single, one-time IV infusion of Zolgensma in pre-symptomatic patients (<6 weeks at age of dosing) genetically defined by bi-allelic deletion of SMN1 with 2 or 3 copies of SMN2. These data demonstrate rapid, age appropriate major milestone gain, reinforcing the critical importance of early intervention in SMA patients.