Abstract 3006
Background
Half of patients newly diagnosed with esophagus squamous cell cancer (ESCC) has a metastatic ESCC (mESCC) and half of patients with initial loco-regional disease presents disease recurrence after surgery and/or chemoradiation. Although not validated by a phase III trial, first-line palliative chemotherapy combines fluoropyrimidine with platinum salt. Patients with disease progression after platinum-based chemotherapy and good performance status may benefit from a second-line chemotherapy. Based on phase I/II trials or retrospective studies, the most commonly used regimens in second-line setting of mESCC are paclitaxel monotherapy or irinotecan monotherapy or combined with 5FU (FOLFIRI). Up to now, there is no randomized trial available.
Trial design
OESIRI is a multicenter, open-label, randomized phase II trial designed to evaluate efficacy and safety of nanoliposomal irinotecan (NalIRI) plus 5FU versus paclitaxel as second-line therapy in mESCC. Main inclusion criteria are histologically proven mESCC after failure of first-line platinum-based chemotherapy and WHO performance status ≤ 2. Patients initially treated by surgery and chemotherapy or definitive chemoradiation are eligible if relapse occurred less than 6 months after the end of the treatment. In the experimental arm, patients will receive, every 14 days, intravenous (IV) infusion of NalIRI (80 mg/m2) followed by 5FU (2400 mg/m2 over 46 h). In the control arm, patients will receive at days 1, 8 and 14 of a 28 days-cycle, an IV infusion of paclitaxel (80 mg/m2). The primary objective is to evaluate the percentage of patients alive 9 months after randomisation. The clinical hypotheses are to extent the 9-months survival rate from 40% to 60%. With a one-sided type one error α of 5%, a power of 85%, a 5% rate of patients lost to follow-up, 53 patients per arm (n = 106) will be randomized. Secondary endpoints are progression-free survival, overall survival, response rate, safety and quality of life. Circulating tumor DNA will be monitored to assess its predictive value of response to treatment. Inclusions started in January 2019 and theoretical end of recruitment is January 2022.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
Fédération Française de Cancérologie Digestive.
Funding
Servier.
Disclosure
All authors have declared no conflicts of interest.
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