Nature Editorial Urges Academic Scientists to Help FDA
As advancing science is fueling new discoveries, FDA needs help from academic scientists to review and approve new drug therapies because in-house talent is weak, according to a Nature editorial. To illustrate the challenges, the editorial points to a 7/12 FDA advisory committee panel that reviewed a Novartis BLA for CTL019 (tisagenlecleucel-T), a chimeric antigen receptor T-cell (CAR-T) for treating pediatric and young adult patients with relapsed or refractory B-cell acute lymphoblastic leukemia. CAR-T therapies are different from traditional drug or biologic therapies because they are manufactured for each individual patient using their own cells. “During the treatment process, T cells are drawn from a patient's blood and reprogrammed in the manufacturing facility to create T cells that are genetically coded to express a chimeric antigen receptor to recognize and fight cancer cells and other B-cells expressing a specific antigen,” according to the company.
While traditional advisory committee meetings review safety and efficacy data and debate statistical details and clinical-trial design, the Novartis BLA panel spent half of the meeting discussing how the therapy is manufactured, the editorial says. “This example offers a glimpse of the regulatory complexity that cutting-edge therapies present,” it says. “When a treatment is based on a person’s own cells, how can the manufacturer ensure that each dose is as safe and potent as the last? Or when a treatment involves a virus, how can a company ensure that it will be safe over the long term, will not develop the ability to replicate and will not, itself, cause cancer?”
As FDA is forced to delve into new science, “a continuing dearth of expertise will become only more painful,” the editorial notes. “Some upcoming therapies that will land on FDA desks touch on the hottest fields in biomedical research. At the 7/12 meeting, researchers could not hold back from listing how future research could optimize more therapies. Scientists should offer the FDA and other regulators the help to assess them.”