Oncternal Therapeutics Enrolls Patients into the Third Dosing Cohort of its Phase 1/2 Study of ONCT-534 for the Treatment of R/R Metastatic Castration-Resistant Prostate Cancer

SAN DIEGO, Jan. 08, 2024 (GLOBE NEWSWIRE) — Oncternal Therapeutics, Inc. (Nasdaq:ONCT), a clinical-stage biopharmaceutical company focused on the development of novel oncology therapies, today announced that the fourth patient has now been enrolled into its Phase 1/2 study of ONCT-534, its dual-action androgen receptor inhibitor, for the treatment of patients with advanced prostate cancer who are relapsed or refractory to approved androgen receptor pathway inhibitors (ARPI). The last two patients were enrolled into the third dosing cohort, to receive ONCT-534 at a dose of 160 mg taken orally each day. The study utilizes an adaptive Bayesian Optimal Interval (BOIN) design, under which the first two dosing cohorts treated one patient each at 40 mg ONCT-534 per day and 80 mg ONCT-534 per day, respectively. The decision to proceed to dose level 3 was confirmed by the study’s Safety Review Committee (SRC).

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