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Long-term outcome of a phase 2 trial with nilotinib 400 mg twice daily in first-line treatment of chronic myeloid leukemia.

Gugliotta, Gabriele; Castagnetti, Fausto; Breccia, Massimo; Levato, Luciano; D'Adda, Mariella; Stagno, Fabio; Tiribelli, Mario; Salvucci, Marzia; Fava, Carmen; Martino, Bruno; Cedrone, Michele; Bocchia, Monica; Trabacchi, Elena; Cavazzini, Francesco; Usala, Emilio; Russo Rossi, Antonella; Bochicchio, Maria Teresa; Soverini, Simona; Alimena, Giuliana; Cavo, Michele; Pane, Fabrizio; Martinelli, Giovanni; Saglio, Giuseppe; Baccarani, Michele; Rosti, Gianantonio.
Haematologica; 100(9): 1146-50, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26113419
Nilotinib is a second-generation tyrosine kinase inhibitor that has been approved for the first-line treatment of chronic-phase chronic myeloid leukemia, based on the results of a prospective randomized study of nilotinib versus imatinib (ENESTnd). Apart from this registration study, very few data are currently available on first-line nilotinib treatment. We report here the long-term, 6-year results of the first investigator-sponsored, GIMEMA multicenter phase 2, single-arm trial with nilotinib 400 mg twice daily as first-line treatment in 73 patients with chronic-phase chronic myeloid leukemia. Six-year overall survival and progression-free survival rates were 96%, with one death after progression to blast phase. At 6 years, 75% of the patients were still on nilotinib. The cumulative incidence of major molecular response was 98%; only one patient had a confirmed loss of major molecular response. The cumulative incidence of deep molecular response (MR 4.0) was 76%. Deep molecular response was stable (≥ 2 years) in 34% of these patients. Cardiovascular adverse events, mainly due to arterial thrombosis, occurred in 11/73 patients (15%), after 24 to 76 months of therapy. They were more frequent in elderly patients, and in those with baseline cardiovascular risk factors. None was fatal, although there was a relevant morbidity. This is the study with the longest follow-up of a high dose of nilotinib (400 mg twice daily): it highlights the high efficacy and the cardiovascular toxicity of the drug (CTG.NCT.00481052).
Selo DaSilva