Merck: FDA grants Regeneron, Sanofi's Libtayo priority review for coveted first-line use in lung cancer
One month after Regeneron and Sanofi posted impressive data from a phase 3 trial of their PD-1 inhibitor Libtayo in first-line non-small cell lung cancer (NSCLC), the FDA has shifted the drug into the fast lane—possibly offering the companies a chance to challenge the undisputed leader in that market, Merck’s Keytruda. The FDA has granted priority review to Libtayo for the treatment of patients with locally advanced or metastatic NSCLC whose tumors have levels of biomarker PD-L1 of 50% or more. The agency is set to make its decision by Feb. 28, Regeneron announced . The data supporting the FDA’s decision to speed up the review are impressive, to be sure. In a trial with 710 NSCLC patients, Libtayo slashed the risk of death by 43% among those with PD-L1 levels of 50% or more, when compared to platinum chemotherapy, Sanofi and Regeneron announced during the virtual meeting of the European Society of Medical Oncology (ESMO). In that subset of patients, the risk of disease progression fell...