|
1
|
Luo Y, Li M, Qi H, Zhao J, Han Y, Lin Y, Hou Z, Jiang Y. Long-term oncologic outcomes of radiotherapy combined with maximal androgen blockade for localized, high-risk prostate cancer. World J Surg Oncol 2018; 16:107. [PMID: 29890979 PMCID: PMC5996541 DOI: 10.1186/s12957-018-1395-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 05/07/2018] [Indexed: 11/22/2022] Open
Abstract
Background To assess the oncologic outcomes of radiation therapy (RT) combined with maximal androgen blockade (MAB) and prostate-specific antigen (PSA) kinetics in patients with localized, high-risk prostate carcinoma (PCa). Methods Three-hundred twenty individuals with localized PCa who underwent RT + MAB in 2001–2015 were evaluated retrospectively. All patients had received 36 months of MAB therapy and 45 Gy of pelvic irradiation, plus a dose-escalated external beam radiation therapy (DE-EBRT) boost to 76~81 Gy (MAB + EBRT group), or a low-dose-rate prostate permanent brachytherapy (LDR-PPB) boost to 110 Gy with I-125 (MAB + EBRT + PPB group). Results Follow-up median is 90 months, ranging from 12 to 186 months; 117 (36.6%) and 203 (63.4%) cases underwent MAB + EBRT and MAB + EBRT + PPB, respectively. Multivariate Cox regression showed that the PPB regimen and PSA kinetics were positive indicators of oncologic outcomes. Compared with MAB + EBRT, MAB + EBRT + PPB remarkably improved PSA kinetics more pronouncedly: PSA nadir (1.3 ± 0.7 vs 0.11 ± 0.06 ng/mL); time of PSA decrease to nadir (7.5 ± 1.8 vs 3.2 ± 2.1 months); PSA doubling time (PSADT; 15.6 ± 4.2 vs 22.6 ± 6.1 months); decrease in PSA (84.6 ± 6.2% vs 95.8 ± 3.4%). Additionally, median times of several important oncologic events were prolonged in the MAB + EBRT + PPB group compared with the MAB + EBRT group: overall survival (OS; 12.3 vs 9.1 years, P < 0.001), biochemical recurrence-free survival (BRFS; 9.8 vs 6.5 years, P < 0.001), skeletal-related event (SRE; 10.4 vs 8.2 years, P < 0.001), and cytotoxic chemotherapy (CCT; 11.6 vs 8.8 years, P = 0.007). Conclusion MAB + EBRT + PPB is extremely effective in patients with localized, high-risk PCa, indicating that PPB may play a synergistic role in improving PSA kinetics and independently predicts oncologic outcomes.
Collapse
Affiliation(s)
- Yong Luo
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Anzhenli Street, Chaoyang District, Beijing, 100029, People's Republic of China.
| | - Mingchuan Li
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Anzhenli Street, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Hengzhi Qi
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Anzhenli Street, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Jiahui Zhao
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Anzhenli Street, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Yili Han
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Anzhenli Street, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Yunhua Lin
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Anzhenli Street, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Zhu Hou
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Anzhenli Street, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Yongguang Jiang
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Anzhenli Street, Chaoyang District, Beijing, 100029, People's Republic of China.
| |
Collapse
|