Docetaxel Versus Androgen-Receptor Signaling Inhibitors (ARSI) as Second-Line Therapy After Failure of First-Line Alternative ARSI for the Elderly ≥ 75 Years Old With Metastatic Castration-Resistant Prostate Cancer (mCRPC): A SPARTACUSS-Meet-URO 26 Real-W

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摘要:

Androgen receptor signalling inhibitors (ARSIs) abiraterone acetate (AA) enzalutamide (Enza), are currently the standard first-line (L1) treatments for metastatic castration-resistant prostate cancer (mCRPC), and docetaxel (D) is reserved as second-line (L2) after ARSI failure. Nonetheless, D use in men ≥ 75 years old is restricted owing to treatment toxicities and patient comorbidities, and a L2 alternative ARSI is frequently used. We aimed to evaluate real-life survival and toxicity outcomes of these elderly patients after failure of L1 ARSI treatment. We retrospectively evaluated efficacy and safety in a real-world international cohort of consecutive patients ≥ 75 years old when starting L1 ARSI for mCRPC according to the choice of L2 treatment (D versus alternative ARSI). Of the 122 identified patients, 57 (46.7%) had received L2 ARSI and 65 (53.3%) L2 D. No difference was found in the L1 overall survival (OS) for the ARSI and D groups (32.8 vs. 30.0 months, respectively; Hazard ratio [HR] = 1.22; 95% CI, 0.77-1.95; P = .40) or in the L2 OS (18.5 vs. 17.8 months, respectively; HR = 1.09; 95% CI, 0.69-1.74; P = .71). No difference was observed for rPFS from L2 (P = .12), although a trend was observed for a numerically improved rPFS on D. Within the limitations of a retrospective design and small population, our study suggests that D or ARSI after failure of L1 alternative ARSI are clinically comparable L2 options for elderly patients with mCRPC.

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DOI:

10.1016/j.clgc.2024.102230

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0

年份:

1970

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