Anders Bjartell1,2, Nicolaas Lumen3, Pablo Maroto4, Thomas Paiss5, Francisco Gomez-Veiga6, Alison Birtle7, Gero Kramer8, Ewa Kalinka9, Dominique Spaëth10, Susan Feyerabend11, Vsevolod Matveev12, Florence Lefresne13, Martin Lukac14, Robert Wapenaar15, Luis Costa16, Simon Chowdhury17. 1. Department of Urology, Skåne University Hospital Malmö, Jan Waldenströms gata 5, SE 205 02, Malmö, Sweden. anders.bjartell@med.lu.se. 2. Department of Translational Medicine, Medical Faculty, Lund University, Malmö, Sweden. anders.bjartell@med.lu.se. 3. Department of Urology, Ghent University Hospital, Ghent, Belgium. 4. Department of Medical Oncology, Hospital de la Santa Creu i Sant Pau, Autonomous University of Barcelona, Barcelona, Spain. 5. Urologie team Ulm, Ulm, Germany. 6. Urology Department and Kidney Transplant Unit, Translational Research Group of Urology GITUR-IBSAL, Salamanca University Hospital, Salamanca, Spain. 7. Royal Preston Hospital, Preston, UK. 8. Department of Urology, Medical University of Vienna, Vienna, Austria. 9. Clinic of Oncology, Polish Mother's Memorial Hospital, Research Institute, Lodz, Poland. 10. Centre d'Oncologie de Gentilly, Nancy, France. 11. Studienpraxis Urologie, Nürtingen, Germany. 12. N.N. Blokhin National Cancer Research Center, Moscow, Russia. 13. EMEA Oncology, Janssen Pharmaceutica N.V., Beerse, Belgium. 14. Parexel International Czech Republic s.r.o, on behalf of Janssen Pharmaceutica N.V., Beerse, Belgium. 15. Janssen-Cilag B.V., Breda, The Netherlands. 16. Oncology Division, Faculdade de Medicina, Hospital de Santa Maria, Instituto de Medicina Molecular, Universidade de Lisboa, Lisbon, Portugal. 17. Guy's and St Thomas' NHS Foundation Trust and Sarah Cannon Research Institute, London, UK.
Abstract
BACKGROUND: Despite standard-of-care androgen-deprivation therapy and an increasing number of treatment options, the mortality rate for prostate cancer remains high. Progress to metastatic castration-resistant prostate cancer (mCRPC) necessitates additional treatments. Abiraterone acetate plus prednisone or prednisolone (AAP) prolongs survival in chemotherapy-naive and docetaxel-experienced patients. OBJECTIVE: To evaluate the real-world safety and efficacy of AAP as first-line and second-line [post-docetaxel only (AAP-PD)] treatment in patients with mCRPC. PATIENTS AND METHODS: The Prostate Cancer Registry (PCR) was a prospective, international, observational study of patients with mCRPC in routine clinical practice. Men aged ≥ 18 years with confirmed mCRPC were included. Baseline characteristics, safety (treatment-emergent adverse events, treatment-emergent severe adverse events), and efficacy [progression-free survival (PFS) and overall survival (OS)] were analyzed. RESULTS: At baseline, patients who received first-line AAP (n = 754) were generally older than patients who received AAP-PD (n = 354); median age was 76 years and 70 years, respectively. However, the rate of visceral metastasis was higher in the AAP-PD cohort than in the AAP cohort (17.7% vs. 9.6%, respectively). Demographics and disease characteristics of patients with baseline cardiovascular disease were similar to those of the overall registry population. Efficacy outcomes were similar for all patients, regardless of the line of AAP therapy. For first-line AAP and AAP-PD, respectively, the median PFS was 8.9 and 5.8 months for all patients and 9.1 and 6.0 months for patients with cardiovascular comorbidities; median OS was 27.1 and 23.4 months for all patients, and 27.4 and 23.1 months for patients with cardiovascular comorbidities. There were no unexpected adverse events in any patient subgroup. CONCLUSIONS: These real-world data complement the findings from randomized controlled trials, indicating that first- and second-line AAP is well tolerated and effective in patients with mCRPC, including those with underlying CV comorbidities. TRIAL REGISTRATION NUMBER: NCT02236637, registered 8 September 2014.
BACKGROUND: Despite standard-of-care androgen-deprivation therapy and an increasing number of treatment options, the mortality rate for prostate cancer remains high. Progress to metastatic castration-resistant prostate cancer (mCRPC) necessitates additional treatments. Abiraterone acetate plus prednisone or prednisolone (AAP) prolongs survival in chemotherapy-naive and docetaxel-experienced patients. OBJECTIVE: To evaluate the real-world safety and efficacy of AAP as first-line and second-line [post-docetaxel only (AAP-PD)] treatment in patients with mCRPC. PATIENTS AND METHODS: The Prostate Cancer Registry (PCR) was a prospective, international, observational study of patients with mCRPC in routine clinical practice. Men aged ≥ 18 years with confirmed mCRPC were included. Baseline characteristics, safety (treatment-emergent adverse events, treatment-emergent severe adverse events), and efficacy [progression-free survival (PFS) and overall survival (OS)] were analyzed. RESULTS: At baseline, patients who received first-line AAP (n = 754) were generally older than patients who received AAP-PD (n = 354); median age was 76 years and 70 years, respectively. However, the rate of visceral metastasis was higher in the AAP-PD cohort than in the AAP cohort (17.7% vs. 9.6%, respectively). Demographics and disease characteristics of patients with baseline cardiovascular disease were similar to those of the overall registry population. Efficacy outcomes were similar for all patients, regardless of the line of AAP therapy. For first-line AAP and AAP-PD, respectively, the median PFS was 8.9 and 5.8 months for all patients and 9.1 and 6.0 months for patients with cardiovascular comorbidities; median OS was 27.1 and 23.4 months for all patients, and 27.4 and 23.1 months for patients with cardiovascular comorbidities. There were no unexpected adverse events in any patient subgroup. CONCLUSIONS: These real-world data complement the findings from randomized controlled trials, indicating that first- and second-line AAP is well tolerated and effective in patients with mCRPC, including those with underlying CV comorbidities. TRIAL REGISTRATION NUMBER: NCT02236637, registered 8 September 2014.
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