FDA OKs Bayer Added Nubeqa Combo Indication for Prostate Cancer

 Bayer announced the U.S. Food and Drug Administration (FDA) has approved a supplemental New Drug Application (sNDA) for the oral androgen receptor inhibitor (ARi) NUBEQA® (darolutamide) with docetaxel for the treatment of adult patients with metastatic hormone-sensitive prostate cancer (mHSPC). The approval is based on results of the Phase III ARASENS trial that demonstrated a statistically significant increase in overall survival (OS), the trial's primary endpoint, with a reduction in the risk of death by 32% for those treated with NUBEQA plus androgen deprivation therapy (ADT) and docetaxel compared to ADT and docetaxel (HR=0.68, 95% CI 0.57-0.80; P<0.0001). Treatment with NUBEQA plus ADT and docetaxel also resulted in a statistically significant delay in time to pain progression (HR=0.79, 95% CI 0.66-0.95; P=0.006). About the ARASENS Trial: The ARASENS trial (NCT02799602) is the only randomized, Phase III, multi-center, double-blind, placebo-controlled trial prospectively designed to compare the use of a second-generation androgen receptor inhibitor (ARi) (NUBEQA) plus androgen deprivation therapy (ADT) and the chemotherapy docetaxel to ADT and docetaxel (a guideline recommended treatment) in patients with metastatic hormone-sensitive prostate cancer (mHSPC). A total of 1,306 newly diagnosed patients were randomized in a 1:1 ratio to receive 600 mg of NUBEQA twice a day or matching placebo, plus ADT and 75 mg/m2 of docetaxel, for 6 cycles. Treatment with NUBEQA plus ADT or ADT continued until symptomatic progressive disease, change of antineoplastic therapy, unacceptable toxicity, death, or withdrawal. The primary endpoint of this trial was overall survival (OS). Time to pain progression was a secondary endpoint. Permanent discontinuation of NUBEQA due to adverse reactions occurred in 14% of patients treated in the NUBEQA with docetaxel arm. The most common adverse reactions which resulted in permanent discontinuation of NUBEQA were rash (1.1%), musculoskeletal pain (0.9%), and increased aspartate aminotransferase (AST) (0.9%). Dosage interruptions of NUBEQA due to adverse reactions occurred in 23% of patients treated in the NUBEQA with docetaxel arm. The most common adverse reactions (>2%) requiring dosage interruption of NUBEQA were increased alanine aminotransferase (ALT) (3.2%), increased AST (3.1%) and febrile neutropenia (2.1%). Dosage reductions of NUBEQA due to adverse reactions occurred in 9% of patients treated in the NUBEQA with docetaxel arm. The most common adverse reactions (>2%) requiring dosage reduction of NUBEQA were increased ALT (2.8%) and increased AST (2.5%). The most common adverse reactions (=10% with a =2% increase over placebo with docetaxel) were constipation, decreased appetite, rash, hemorrhage, increased weight, and hypertension. The most common laboratory test abnormalities (=30%) were anemia, hyperglycemia, decreased lymphocyte count, decreased neutrophil count, increased AST, increased ALT, and hypocalcemia.

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