Following the tone set in an October U.S. FDA Oncologic Drugs Advisory Committee meeting, the agency has issued a complete response letter (CRL) to Y-mabs Therapeutics Inc.’s BLA for Omblastys (131I-omburtamab) to treat central nervous system/leptomeningeal metastasis arising from neuroblastoma.

Skeptical briefing documents pertaining to the U.S. FDA’s adcom meeting on Y-mabs Therapeutics Inc.’s Omblastys (131I-omburtamab) turned out predictive of the less-than-happy outcome, as the regulator’s Oncologic Drugs Advisory Committee (ODAC) turned thumbs down on the prospective drug for pediatric central nervous system/leptomeningeal metastasis from neuroblastoma.

Emphasizing April’s vote of concern about the safety of PI3K inhibitors, the U.S. FDA’s Oncologic Drugs Advisory Committee said privately held Secura Bio Inc.’s Copiktra (duvelisib) is more of a hindrance than a help. The adcom voted 8-4 on Sept. 23 that it sees a detriment in overall survival (OS) and some other safety issues that were revealed in newly updated data for the cancer treatment. Approved in 2018 for treating adults with relapsed or refractory chronic lymphocytic leukemia or small lymphocytic lymphoma after at least two prior therapies, Secura argued that its data continue to show a statistically significant and clinically meaningful benefit in OS and also in progression-free survival.

As part of a U.S. FDA evaluation of confirmatory trials for anti-PD-1/PD-L1 antibodies, the agency’s Oncologic Drugs Advisory Committee (ODAC) is being asked this week to consider whether three blockbuster biologics should continue to be available for certain cancer indications for which they received accelerated approval. At question is whether the data from the confirmatory trials for the Roche Group’s Tecentriq (atezolizumab), Merck & Co. Inc.’s Keytruda (pembrolizumab) and Bristol Myers Squibb Co.’s Opdivo (nivolumab) has proved sufficient benefit in particular indications and, if not, whether alternative or ongoing trials could do so.