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Juno, Kite Pharma Aim for 2017 CAR-T Therapy Approvals

By Stephanie Guzowski | June 7, 2016

A new approach to immunotherapy that engineers patients’ immune cells to recognize and attack tumor cells continues to gain speed: Juno Therapeutics and Kite Pharma both intend to bring chimeric antigen receptor T-cell (CAR-T) therapies to market next year.

Following the publication of updated clinical trial data, presented at the American Society of Clinical Oncology (ASCO), both companies commented to Reuters that they aim to win approvals for their products next year. Specifically, Kite Pharma aims to file this year for FDA approval of its therapy, KTE-C19, for patients with diffuse large B-cell lymphoma (DLBCL). And Juno is currently enrolling patients with acute lymphoblastic leukemia (ALL) in a mid-stage trial of its therapy, JCAR015, the data of which it believes will support accelerated approval.

CAR-T therapies involve extracting a patient’s T cells, genetically modifying the T cells to express CARs that can recognize cancer-specific antigens, and then reinfusing the transfected cells into the patient.

At ASCO, Juno presented an update on its trial, JCAR015: Among 25 patients with advanced ALL, 77 percent achieved a complete response rate. That rate increased to 90 percent in patients who had minimal disease.

Kite Pharma presented its data: In a National Institutes of Health early-stage study that administered low-dose chemotherapy and its therapy, KTE-C19, to 19 patients with various subtypes of DLBCL, 8 trial participants experienced a complete response and 5 had a partial response.

Although the response rates of these CAR-T therapies appear promising, there are risky side effects to the treatments. One in particular is cytokine-release syndrome, in which the T cells rapidly release a large number of cytokines into the blood stream. This can result in dangerously high fevers and precipitous drops in blood pressure.

But Juno’s CEO Hans Bishop isn’t deterred that CAR-T therapies’ risks could outweigh any benefits. “These are patients that are relapsed and refractory,” he told Reuters. “They are going to die of their disease. We can get 90 to 100 percent of them into remission, and a meaningful percentage of them have durable remission.”

Juno said it is also looking into developing an assay to identify which patients might respond negatively to its therapy prior to beginning treatment.

Last year, Kite Pharma confirmed a patient death that took place during an early-stage KTE-C19 trial was unrelated to the company’s therapy.


Filed Under: Drug Discovery

 

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