The companion diagnostic (CDx) has been a mainstay of oncology care for several years, but Richard Pazdur, director of the U.S. FDA’s Oncology Center of Excellence, said recently in a public forum recently that the notion of a single CDx for an investigational drug has not served patients well.
The companion diagnostic (CDx) has been a mainstay of oncology care for several years, but Richard Pazdur, director of the U.S. FDA’s Oncology Center of Excellence (OCE), said recently in a public forum recently that the notion of a single CDx for an investigational drug has not served patients well. Pazdur said OCE and the FDA’s Center for Devices and Radiological Health are working on a pilot program that would entail the publication of performance standards for the tests used in these trials, a development that would lead to more routine development of lab-developed tests (LDTs) for these studies and thus undercut any incentive to develop a patented in vitro diagnostic for that purpose.
The U.S. FDA’s safety and performance-based pathway (SPBP) is intended as a leaner, meaner alternative to the conventional 510(k) pathway that would sidestep some of the presumed problems with the concept of substantial equivalence. The agency recently added four device types to this program, including orthopedic fracture fixation plates.