Combination Therapy With S-1, Oxaliplatin and Leucovorin in Patients With Advanced Esophageal Squamous Cell Carcinoma.

Abstract

In this study, we assessed the safety and efficacy of combination therapy with S-1, oxaliplatin and leucovorin (SOL) in advanced esophageal squamous cell carcinoma (ESCC) patients. Ten unresectable or recurrence ESCC patients, who had been previously treated with more than two regimens were included in this study. The treatment schedule comprised S-1 40-60 mg and fixed dose of leucovorin 25 mg together orally twice a day for one week, followed by one-week of rest. Oxaliplatin 85 mg/m2 was given as an intravenous infusion on day one, repeated every two weeks. Of the eight patients with measurable lesions, two patients with partial response (25%) and two with stable disease (25%) were observed. Disease control rate was 50%. Median progression-free survival and overall survival were 5.0 and 9.3 months, respectively. The main common adverse events were malaise (60%), decreased appetite (50%), peripheral sensory neuropathy (40%). SOL therapy showed promising antitumor activity with acceptable toxicity even for heavily pretreated ESCC.