Efficacy of trabectedin in malignant solitary fibrous tumors: a retrospective analysis from the French Sarcoma Group.
Fiche publication
Date publication
janvier 2015
Auteurs
Membres identifiés du Cancéropôle Est :
Dr CHAIGNEAU Loïc, Dr RIOS Maria
Tous les auteurs :
Khalifa J, Ouali M, Chaltiel L, Le Guellec S, Le Cesne A, Blay JY, Cousin P, Chaigneau L, Bompas E, Piperno-Neumann S, Bui-Nguyen B, Rios M, Delord JP, Penel N, Chevreau C
Lien Pubmed
Résumé
BACKGROUND: Advanced malignant solitary fibrous tumors (SFTs) are rare soft-tissue sarcomas with a poor prognosis. Several treatment options have been reported, but with uncertain rates of efficacy. Our aim is to describe the activity of trabectedin in a retrospective, multi-center French series of patients with SFTs. METHODS: Patients were mainly identified through the French RetrospectYon database and were treated between January 2008 and May 2013. Trabectedin was administered at an initial dose of 1.5 mg/m(2), q3 weeks. The best tumor response was assessed according to the Response Evaluation Criteria In Solid Tumors 1.1. The Kaplan-Meier method was used to estimate median progression-free survival (PFS) and overall survival (OS). The growth-modulation index (GMI) was defined as the ratio between the time to progression with trabectedin (TTPn) and the TTP with the immediately prior line of treatment (TTPn-1). RESULTS: Eleven patients treated with trabectedin for advanced SFT were identified. Trabectedin had been used as second-line treatment in 8 patients (72.7 %) and as at least third-line therapy in a further 3 (27.3 %). The best RECIST response was a partial response (PR) in one patient (9.1 %) and stable disease (SD) in eight patients (72.7 %). Disease-control rate (DCR = PR + SD) was 81.8 %. After a median follow-up of 29.2 months, the median PFS was 11.6 months (95 % CI = 2.0; 15.2 months) and the median OS was 22.3 months (95 % CI = 9.1 months; not reached). The median GMI was 1.49 (range: 0.11-4.12). CONCLUSION: Trabectedin is a very promising treatment for advanced SFTs. Further investigations are needed.
Référence
BMC Cancer. 2015 Oct 15;15:700