5 patients deaths reported the next day after update provided on Interim TAMARACK Ph 2 Study Data

“We are very encouraged by the interim updated safety and preliminary efficacy data from the TAMARACK study of vobra duo in metastatic castration-resistant prostate cancer,” said Scott Koenig, M.D., Ph.D., President and CEO of MacroGenics. “We believe this interim data set helps validate our previously stated hypothesis that improved tolerability coupled with compelling biological activity could be achieved through dose reductions and a longer dosing interval. We believe vobra duo’s biological activity shown to date aligns well with the parameters we outlined at the outset of the study. Based on our evaluation of the interim data to date, we have initiated planning activities for a potential Phase 3 study that could commence next year. We anticipate sharing final safety, efficacy and durability data, including radiographic progression-free survival data, which is the primary endpoint of the study, in the second half of 2024. Furthermore, having preliminarily identified suitable vobra duo doses in mCRPC in the TAMARACK study, we have greater confidence in the molecule’s potential to help patients with a broad range of B7-H3-expressing cancers.”