Partial Clinical Hold Lifted on iMMagine-1 Phase 2 Clinical Program

“We have worked closely with FDA to expeditiously resolve the clinical hold and we thank them for their collaboration and dialogue throughout this process,” said Rami Elghandour, Arcellx’s Chairman and Chief Executive Officer. “During the review process, we updated our trial protocol, and were pleased that FDA allowed for expanded bridging therapies, which better aligns our protocol with current clinical practice. As a key step to enhancing protocol adherence related to the prevention and management of the risk of adverse events, we retrained clinical sites. Importantly, during the partial clinical hold, FDA approved dosing of all 17 patients who had been enrolled but not yet dosed prior to the hold, minimizing treatment disruption for patients and clinicians. We and our partners at Kite remain confident in CART-ddBCMA’s potential as a best-in-class therapy for the treatment of patients with rrMM given the totality of data to date across our studies. We have a strong balance sheet funding operations through BLA filing and into 2026. We look forward to presenting data from our Phase 1 study later this year as well as preliminary data from the iMMagine-1 study in the second half of 2024. Additionally, we continue to expect commercial launch of CART-ddBCMA to be in 2026.”