BACKGROUND/AIM: There are several treatment options for metastatic hormone-sensitive prostate cancer (mHSPC) in the world. In recent years, the use of docetaxel, abiraterone, enzalutamide, and apalutamide has been used for mHSPC, but combined androgen blockade (CAB) therapy using first-generation antiandrogens has been widely used in Japan. There is a background. We performed a consecutive study of patients who received combined androgen blockade (CAB) at a single institute to determine the prognostic factors for mHSPC. PATIENTS AND METHODS: We conducted a consecutive study of 237 mHSPC patients treated with CAB from 2003 to 2017 at the Gunma University Hospital. Prostate-specific antigen progression-free survival (PSA-PFS) and overall survival (OS) were estimated by the Kaplan-Meier method. The associations between pre-treatment risk factors and the PSA response 3 months after starting CAB, PSA-PFS, and OS were evaluated by the Cox proportional hazards model. RESULTS: Among the 237 cases, the median PSA-PFS and OS times were 63.0 and 91.4 months, respectively. The median PSA-PFS and OS times of M1 cases (174 cases, 73.4% of all 237 cases) were 36.1 and 75.9 months, respectively. The Eastern Cooperative Oncology Group performance status (ECOG PS) score, hemoglobin (Hb), lactate dehydrogenase, extent of disease, visceral metastasis (no vs. yes), and PSA response after 3 months were significant predictors of OS according to Cox regression analysis of prognostic factors in M1 patients. The ECOG PS, Hb, visceral metastasis (no vs. yes), and PSA response after 3 months predicted OS high-risk patients in LATITUDE criteria. The OS was 92.1 months in the low-risk group (0-1 risk factors), 48.2 months in the intermediate-risk group (2 risk factors), and 16.9 months in the high-risk group (3-4 risk factors). CONCLUSION: CAB should be considered as a treatment option for strictly selected patients with mHSPC, even though novel treatments are available. Copyright
BACKGROUND/AIM: There are several treatment options for metastatic hormone-sensitive prostate cancer (mHSPC) in the world. In recent years, the use of docetaxel, abiraterone, enzalutamide, and apalutamide has been used for mHSPC, but combined androgen blockade (CAB) therapy using first-generation antiandrogens has been widely used in Japan. There is a background. We performed a consecutive study of patients who received combined androgen blockade (CAB) at a single institute to determine the prognostic factors for mHSPC. PATIENTS AND METHODS: We conducted a consecutive study of 237 mHSPC patients treated with CAB from 2003 to 2017 at the Gunma University Hospital. Prostate-specific antigen progression-free survival (PSA-PFS) and overall survival (OS) were estimated by the Kaplan-Meier method. The associations between pre-treatment risk factors and the PSA response 3 months after starting CAB, PSA-PFS, and OS were evaluated by the Cox proportional hazards model. RESULTS: Among the 237 cases, the median PSA-PFS and OS times were 63.0 and 91.4 months, respectively. The median PSA-PFS and OS times of M1 cases (174 cases, 73.4% of all 237 cases) were 36.1 and 75.9 months, respectively. The Eastern Cooperative Oncology Group performance status (ECOG PS) score, hemoglobin (Hb), lactate dehydrogenase, extent of disease, visceral metastasis (no vs. yes), and PSA response after 3 months were significant predictors of OS according to Cox regression analysis of prognostic factors in M1 patients. The ECOG PS, Hb, visceral metastasis (no vs. yes), and PSA response after 3 months predicted OS high-risk patients in LATITUDE criteria. The OS was 92.1 months in the low-risk group (0-1 risk factors), 48.2 months in the intermediate-risk group (2 risk factors), and 16.9 months in the high-risk group (3-4 risk factors). CONCLUSION: CAB should be considered as a treatment option for strictly selected patients with mHSPC, even though novel treatments are available. Copyright
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