Viela Bio Gains Breakthrough Status for Inebilizumab

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FDA has granted Viela Bio a breakthrough therapy designation for the company’s anti-CD19 monoclonal antibody inebilizumab, an investigational monotherapy for neuromyelitis optica spectrum disorder (NMOSD), a rare, life-threatening autoimmune disease affecting the central nervous system. The designation is based on data from the N-MOmentum study that enrolled 231 NMOSD patients. The company says patients were randomized to receive two intravenous doses of inebilizumab monotherapy or placebo and followed for 6.5 months. Patients were subsequently placed into open label extension in which all patients received inebilizumab every six months. The primary endpoint was time from treatment initiation to occurrence of an NMOSD attack.

 

Inebilizumab is a humanized monoclonal antibody that binds with high affinity to CD19, a protein expressed on a broad range of B cells, including antibody-secreting plasmablasts and some plasma cells. After binding to CD19, these cells are rapidly depleted from the circulation.

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