TITAN-Studie - Evaluation von Apalutamid bei Patienten mit metastasiertem hormonsensitivem Prostatakarzinom

The TITAN study, which compares apalutamide plus ADT with placebo plus ADT in an all-comers population of patients with metastatic hormone-sensitive prostate cancer (mHSPC), reached both primary endpoints, rPFS and OS, at the first planned interim analysis 1. After a median follow-up of 22.7 months, the risk of radiographic progression was reduced by 52% (p<0.001) 1. The rPFS benefit was observed in all subgroups and independently of tumour burden or docetaxel pre-treatment 1. The OS interim analysis showed a mortality risk reduced by 33% in favour of apalutamide plus ADT (p=0.0053) 1. The secondary endpoint of time to cytotoxic chemotherapy as well as the exploratory endpoints of time to PSA progression and second progression-free survival (PFS2), defined as time between randomisation and second disease progression or death under the first subsequent therapy, were also significantly improved 1 2. Overall, apalutamide showed good tolerability, with a higher rate of apalutamide-typical rash and hypothyroidism but no relevant increase in fatigue, falls or fractures compared with placebo, and with quality of life being maintained 1. Apalutamide plus ADT can thus be an effective and well-tolerated new treatment option in many patients with mHSPC.