Showing papers by "Philippe Maingon published in 2015"

Internal mammary and medial supraclavicular irradiation in breast cancer

Abstract: BACKGROUND The effect of internal mammary and medial supraclavicular lymph-node irradiation (regional nodal irradiation) added to whole-breast or thoracic-wall irradiation after surgery on survival among women with early-stage breast cancer is unknown. METHODS We randomly assigned women who had a centrally or medially located primary tumor, irrespective of axillary involvement, or an externally located tumor with axillary involvement to undergo either whole-breast or thoracic-wall irradiation in addition to regional nodal irradiation (nodal-irradiation group) or whole-breast or thoracic-wall irradiation alone (control group). The primary end point was overall survival. Secondary end points were the rates of disease-free survival, survival free from distant disease, and death from breast cancer. RESULTS Between 1996 and 2004, a total of 4004 patients underwent randomization. The majority of patients (76.1%) underwent breast-conserving surgery. After mastectomy, 73.4% of the patients in both groups underwent chest-wall irradiation. Nearly all patients with node-positive disease (99.0%) and 66.3% of patients with node-negative disease received adjuvant systemic treatment. At a median follow-up of 10.9 years, 811 patients had died. At 10 years, overall survival was 82.3% in the nodal-irradiation group and 80.7% in the control group (hazard ratio for death with nodal irradiation, 0.87; 95% confidence interval [CI], 0.76 to 1.00; P = 0.06). The rate of disease-free survival was 72.1% in the nodal-irradiation group and 69.1% in the control group (hazard ratio for disease progression or death, 0.89; 95% CI, 0.80 to 1.00; P = 0.04), the rate of distant disease-free survival was 78.0% versus 75.0% (hazard ratio, 0.86; 95% CI, 0.76 to 0.98; P = 0.02), and breast-cancer mortality was 12.5% versus 14.4% (hazard ratio, 0.82; 95% CI, 0.70 to 0.97; P = 0.02). Acute side effects of regional nodal irradiation were modest. CONCLUSIONS In patients with early-stage breast cancer, irradiation of the regional nodes had a marginal effect on overall survival. Disease-free survival and distant disease-free survival were improved, and breast-cancer mortality was reduced. (Funded by Fonds Cancer; ClinicalTrials.gov number, NCT00002851.)

Whole-breast irradiation with or without a boost for patients treated with breast-conserving surgery for early breast cancer: 20-year follow-up of a randomised phase 3 trial

Abstract: Summary Background Since the introduction of breast-conserving treatment, various radiation doses after lumpectomy have been used. In a phase 3 randomised controlled trial, we investigated the effect of a radiation boost of 16 Gy on overall survival, local control, and fibrosis for patients with stage I and II breast cancer who underwent breast-conserving treatment compared with patients who received no boost. Here, we present the 20-year follow-up results. Methods Patients with microscopically complete excision for invasive disease followed by whole-breast irradiation of 50 Gy in 5 weeks were centrally randomised (1:1) with a minimisation algorithm to receive 16 Gy boost or no boost, with minimisation for age, menopausal status, presence of extensive ductal carcinoma in situ, clinical tumour size, nodal status, and institution. Neither patients nor investigators were masked to treatment allocation. The primary endpoint was overall survival in the intention-to-treat population. The trial is registered with ClinicalTrials.gov, number NCT02295033. Findings Between May 24, 1989, and June 25, 1996, 2657 patients were randomly assigned to receive no radiation boost and 2661 patients randomly assigned to receive a radiation boost. Median follow-up was 17·2 years (IQR 13·0–19·0). 20-year overall survival was 59·7% (99% CI 56·3–63·0) in the boost group versus 61·1% (57·6–64·3) in the no boost group, hazard ratio (HR) 1·05 (99% CI 0·92–1·19, p=0·323). Ipsilateral breast tumour recurrence was the first treatment failure for 354 patients (13%) in the no boost group versus 237 patients (9%) in the boost group, HR 0·65 (99% CI 0·52–0·81, p Interpretation A radiation boost after whole-breast irradiation has no effect on long-term overall survival, but can improve local control, with the largest absolute benefit in young patients, although it increases the risk of moderate to severe fibrosis. The extra radiation dose can be avoided in most patients older than age 60 years. Funding Fonds Cancer, Belgium.

Phase II Study of a Platinum-Based Adapted Chemotherapy Regimen Combined with Radiotherapy in Patients 75 Years and Older with Esophageal Cancer

Abstract: The management of elderly patients with cancer is a therapeutic challenge and a public health problem. The aim of this phase II single-arm study was to evaluate the acute toxicities and efficacy of chemoradiotherapy (CRT) comprising a single platinum-based agent combined with radiotherapy in elderly patients with esophageal cancer. Between March 2000 and October 2011, patients aged 75 years and older were prospectively treated with external beam radiotherapy combined with cisplatin or oxaliplatin. Other selection criteria included Eastern Cooperative Oncology Group status 0–2, disease stage II–III, squamous cell carcinoma or adenocarcinoma, and an adequate biological profile. The radiotherapy dose was 50 Gy administered over 5 weeks to the primary tumor and involved lymph nodes. Cisplatin was planned at a dose of 75 mg/m2 on days 1 and 21 and oxaliplatin at 85 mg/m2 on days 1, 15, and 29. Treatment was delivered an outpatient setting. Thirty patients with a mean age of 85.2 (range 79.4–92.0) years were included; 28 completed the treatment. Dysphagia was the only grade 4 toxicity to occur during the study; no grade 5 toxicities were observed. Six weeks after the completion of treatment, 16 patients (53.3 %) were in complete response. Two patients in complete response died from pneumonitis 5 and 7 months after CRT. With a 36-month median follow-up, 18 patients died from cancer (nine from local failure, nine from metastasis). Seven patients died from other causes and two patients were alive 40.3 and 56 months after the end of their treatment. Three-year overall survival was 22.2 %. Selected elderly patients with esophageal cancer and adequate functional status should not be excluded from CRT and may be able to tolerate the treatment with acceptable acute toxicities. However, mid-term efficacy is mediocre. Our data also suggest that the therapeutic ratio or locoregional control might be improved by increasing the radiotherapy dose or by testing new radiosensitizer agents since half of the failures were within the treated volume. Trial Registration: EudraCT no. 2009-010113-76.

Early radiation response between GnRH agonist versus antagonist combined with radiotherapy in high-risk prostate cancer.

Abstract: 97 Background: Degarelix, a GnRH antagonist, provides a very rapid and sustained testosterone suppression alongside with the VEGF pathway inhibition through the FSH receptors. This raises the quest...