Iovance Melanoma Cell Therapy Approved
FDA has granted accelerated approval to Iovance Biotherapeutics for Amtagvi, a cellular therapy indicated for treating adult patients melanoma that is unable to be removed with surgery (unresectable) or has spread to other parts of the body (metastatic) that previously has been treated with other therapies (a PD-1 blocking antibody or a BRAF inhibitor with or without a MEK inhibitor). The agency says this is the first tumor-derived T cell immunotherapy approval. A confirmatory trial is ongoing to verify Amtagvi’s clinical benefit.
“Amtagvi is a tumor-derived autologous T cell immunotherapy composed of a patient's own T cells, a type of cell that helps the immune system fight cancer,” an agency release says. “A portion of the patient’s tumor tissue is removed during a surgical procedure prior to treatment.” Then, the patient’s T cells are separated from the tumor tissue, further manufactured and returned to the patient as a single dose for infusion.
Approval is based on data from a global, multicenter, multicohort clinical study including adult patients with unresectable or metastatic melanoma who had previously been treated with at least one systemic therapy. “Effectiveness was established based on objective response rate to treatment and duration of response (measured from the date of confirmed initial objective response to the date of progression, death from any cause, starting a new anti-cancer treatment or discontinuation from follow-up, whichever came first),” FDA says. “Among the 73 patients treated with Amtagvi at the recommended dose, the objective response rate was 31.5%, including three (4.1%) patients with a complete response and 20 (27.4%) patients with a partial response.”
On the safety side, FDA says patients treated with Amtagvi may have prolonged severe low blood count, severe infection, cardiac disorder, or develop worsened respiratory or renal function or have fatal treatment-related complications. A Boxed Warning is also required about these risks.