Allakos Inc. terminated all development of its lead drug, anti-Siglec-8 antibody lirentelimab (AK-002), and is cutting its workforce in half, following phase II failures for atopic dermatitis and chronic spontaneous urticaria. The San Carlos, Calif.-based company will now focus on phase I trials for anti-Siglec-6 antibody AK-006 as part of a restructuring that stretches the runway into mid-2026. Shares (NASDAQ:ALLK) sank by 60.2%, down $1.80, to close at $1.19 on Jan. 16.
Discouraging news from two trials with lirentelimab slammed shares of Allakos Inc. (NASDAQ:ALLK), which ended the day at $8.55, down $75.84, or almost 90%. The Redwood City, Calif.-based firm reported data from Enigma 2, a phase III study in patients with biopsy-confirmed eosinophilic gastritis and/or eosinophilic duodenitis, and Kryptos, a phase II/III experiment in biopsy-confirmed eosinophilic esophagitis. Both experiments met their histologic co-primary endpoints but fell short of statistical significance on patient-reported symptomatic co-primary goals.
Data from a prospective study rolled out by Allakos Inc. last month at the Digestive Disease Week meeting made the case for broader prevalence than previously believed of eosinophilic gastritis and/or eosinophilic duodenitis – and the Redwood City, Calif.-based firm may have just the drug for the conditions in lirentelimab (AK-002).
