Prospective Observational Study Comparing Calcium and Sodium Levofolinate in Combination with 5-Fluorouracil in the FOLFIRI Regimen

Abstract

Abstract Lessons Learned Background The objectives of this study were to compare the safety profiles of sodium levofolinate (Na-Lev) and calcium levofolinate (Ca-Lev) in combination with 5-fluorouracil (5-FU) in the FOLFIRI regimen and to measure the organizational impact of the introduction of Na-Lev on drug production and administration. Methods The study opened in November 2015 and closed in August 2019. Patients with gastrointestinal cancers who were candidates for treatment with the FOLFIRI regimen were included in this nonrandomized study. Age ≥18 years, life expectancy <3 months, adequate bone marrow reserve, adequate hepatic and renal function, and an ECOG performance status of 0–2 were required. Patients in the Ca-Lev arm received a 2-hour infusion of Ca-Lev followed by 5-FU, whereas those in the Na-Lev arm received Na-Lev and 5-FU administered in a single 48-hour pump. Results Sixty patients were enrolled, 30 in each arm. Patient characteristics were balanced. Grade (G)1–2 adverse events occurred in 18 (60.0%) and 19 (63.4%) patients of Na-Lev and Ca-Lev cohorts, respectively, whereas G3–4 adverse events occurred in 12 (40.0%) and 11 (36.6%) patients, respectively. The use of Na-Lev enabled us to save approximately 13 minutes for drug preparation and 2 hours for treatment administration, per patient per cycle. Conclusion Na-Lev showed a reassuring toxicity profile and a favorable impact on drug preparation and administration.