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.