Treatment of patients with newly diagnosed metastatic hormone sensitive prostate cancer (mHSPC) in Belgium: a real world data analysis.

INTRODUCTION: Abiraterone acetate + prednisone (AAP) and docetaxel have proven their efficacy in the treatment of patients with newly diagnosed metastatic hormone-sensitive prostate cancer (mHSPC) in clinical trials. However, real-world data are scarce. The goal of this study is to evaluate real-world data on the efficacy and safety of these therapies in mHSPC patients. PATIENTS AND METHODS: Records of 93 patients from 21 different centres were retrospectively reviewed. Primary and secondary endpoints were radiographic and PSA progression-free survival (RPFS - PSA-PFS) and cancer specific and overall survival (CSS - OS), respectively. Adverse events (AEs) were evaluated according to the Common Terminology Criteria for Adverse Events version 5.0. Differences in oncological outcome and AEs were evaluated between three treatment groups: ADT only (N=26) - ADT + AAP (N=48) - ADT + docetaxel (N=19). Survival analysis was performed using Kaplan-Meier statistics. RESULTS: Median RPFS was 13 months (95% confidence interval [CI]: 9-17) for ADT only, 21 months (95% CI: 19-23) for ADT + AAP and 12 months (95% CI: 11-14) for ADT + docetaxel (p = 0.004). The 1-year PSA-PFS, CSS and OS were 73.5%, 90.7% and 88.7%, respectively, with no significant differences between the three groups. Adverse events of grade 3 or higher were not observed more frequently. CONCLUSION: Retrospective real-world data show a significantly longer RPFS for mHSPC patients treated with ADT + AAP compared to ADT only or ADT + docetaxel at short-term follow-up. This can aid in counselling of mHSPC patients in daily clinical practice.

Oral metronomic chemo-hormonal-therapy of metastatic breast cancer with cyclophosphamide and megestrol acetate.

Metronomic chemotherapy is an anticancer strategy which uses conventional cytotoxic drugs administered at very low dose in close intervals. We have designed a phase II trial to investigate the safety and antitumor activity of the newest metronomic chemo-hormonal-therapy with daily cyclophosphamide and twice daily megestrol acetate (mCM regimen) in patients with metastatic pretreated breast cancer.Twenty-nine pretreated post-menopausal patients with multiple metastatic sites were enrolled. four patients had a triple negative status, nineteen a positive hormonal ER and PgR status, and three ERB-B2 over-expression. Patients received treatment with cyclophosphamide (50 mg/daily day 1-21/q28) and fractionated megestrol acetate (80 mg twice a day). The overall objective response rate was 31.0%, disease control rate 41.3%, mean time to tumor progression 7.4 months (CI 95%, 3.8-10.88, range 1-48 months) and mean overall survival 13.4 months (CI 95%, 7.24-17.18, range 1-53 months). The mCM regimen was active and well tolerated.

A novel metronomic chemotherapy regimen of weekly platinum and daily oral etoposide in high-risk non-small cell lung cancer patients.

The aim of this pilot phase II trial was to investigate the toxicity and anti-tumour activity of a novel metronomic regimen of weekly cisplatin (CDDP) and oral etoposide (VP16) in high-risk patients with advanced NSCLC. The study enrolled 31 high-risk patients (27 men and 4 women aged 16-82 years; mean, 64.3) with NSCLC (18 stage IIIB and 13 stage IV) and an ECOG performance status of < or = 3, all of whom received weekly CDDP 30 mg/m2 iv on days 1, 8, 14 and 28 of each cycle and oral daily etoposide 50 mg/m2 on 21 of the 28 days. The most frequent adverse events were grade III leukopenia and anemia; nevertheless, three patients died of pulmonary embolism after 2, 3 and 6 weeks of treatment. The objective response (OR) rate was 45.2% (2 complete and 12 partial), and the disease control rate was 58.1% (14 ORs and 4 disease stabilisations). The mean time to progression and survival were respectively nine months (95% CI, 6.3-15.8 months) and thirteen months (95% CI, 9.1-20.5 months). Pharmacological analysis showed that this metronomic regimen allows a much greater median monthly area under the curve of CDDP and VP16 than conventional treatment schedules. Our findings also suggest that this treatment schedule may affect tumour growth and neoangiogenesis by changing peripheral blood vascular-endothelial growth factor levels. These preliminary results indicate that our metronomic regimen is well tolerated and active, even in patients with a very poor prognosis.