FDA Gives Orchard ‘Advanced’ Status for Gene Therapy
FDA has granted Orchard Therapeutics a Regenerative Medicine Advanced Therapy designation for the company’s ex vivo autologous hematopoietic stem cell-based gene therapy (OTL-103) for treating Wiskott-Aldrich Syndrome (WAS). The designation was based on data from an interim analysis of a registrational trial in patients with severe WAS. The data show that the gene therapy assisted with the “recovery of the immunological and platelet abnormalities associated with WAS, with a consequent significant reduction in the major complications of the disease,” the company says. “Following treatment with OTL-103 gene therapy, patients with follow-up ranging from 0.5 to 5.6 years showed a decrease in the frequency of severe infections. In addition, severe bleeding episodes were eliminated and moderate bleeding episodes were greatly reduced.”
WAS is a life-threatening inherited immune disorder characterized by autoimmunity, eczema, abnormal platelet number and function. The company says WAS manifests with recurrent, severe infections and severe bleeding episodes, which are the leading causes of death in this disease. “Without treatment, the median survival for WAS patients is 14 years of age and treatment with stem cell transplant carries significant risk of mortality and morbidities,” it says.