Age Adjusted Charlson Comorbidity Index Strongly Influences Survival, Irrespective of Performance Status and Age, in Patients With Advanced Prostatic Cancer Treated With Enzalutamide

Background/Aim: Enzalutamide is prescribed for advanced prostatic cancer patients, regardless of physical comorbidity. We hypothesized that comorbidity negatively affects survival regardless of age, performance status and prostate-specific antigen (PSA) response. Patients and Methods: All patients (n=106) treated at the ADRZ Medical Center with enzalutamide in the period 2015-2018 and who had undergone at least one PSA response evaluation were included in a multivariate analysis to test which variables independently affected Time to PSA progression (TPSAP) and/or overall survival (OS). Results: A poorer performance status appeared to relate to a two times increased risk of dying (HR=2.032, 95%CI=1.078-3.830). An older age did not appear to influence OS, whereas an ACCI of more than 9 points appeared to relate to a more than three times increased risk of dying (HR=3.538, 95%CI=1.466-8.538). Conclusion: Survival appeared to be strongly affected by comorbidity, irrespective of age and performance status in patients treated with enzalutamide.

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