Abstract
Aim: To investigate the efficacy of adjuvant chemotherapy plus tumor-infiltrating lymphocytes (TILs) therapy in osteosarcoma patients with a poor response to neoadjuvant chemotherapy. Materials & methods: 40 patients received adjuvant chemotherapy (Group 1) and 40 patients received adjuvant chemotherapy plus TILs therapy (Group 2). Disease-free survival (DFS) and overall survival (OS) were analyzed byKaplan-Meier analysis. Results: The median DFS (mDFS; 65.3months) and median OS (mOS; 95.8months) in Group 2 were significantly prolonged compared with those in Group 1 (55.5months for mDFS and 80.4months for mOS). Univariate and multivariate analyses indicated that a greater number of TILs transfused was an independent prognostic factor for both mDFS and mOS. Conclusion: Adjuvant chemotherapy plus TILs therapy may prolong survival of patients with a poor response to neoadjuvant chemotherapy.
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