1. Characteristics and Outcomes of Adult Patients in the PETHEMA Registry with Relapsed or Refractory FLT3-ITD Mutation-Positive Acute Myeloid Leukemia
- Author
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Martínez-Cuadrón, David, Serrano, J., Mariz, José, Gil, C., Tormo, M., Martínez-Sánchez, P., Rodríguez-Arbolí, Eduardo, García-Boyero, R., Rodríguez-Medina, C., Martínez-Chamorro, C., Polo, M., Bergua Burgues, Juan Miguel, Aguiar, Eliana, Amigo, María-Luz, Herrera, P., Alonso-Domínguez, Juan Manuel, Bernal, Teresa, Espadana, A., Sayas, M.J., Algarra, Lorenzo, Vidriales, M.B., Vasconcelos, G., Vives Polo, Susana, Pérez-Encinas, M.M., López, A., Noriega, V., García-Fortes, M., Chillón, M. Carmen, Rodríguez-Gutiérrez, J.I., Calasanz, M.J, Labrador, Jorge, López, J. A., Boluda, Blanca, Rodríguez-Veiga, R., Martínez-López, J., Barragán, Eva, Sanz, Miguel A., Montesinos, P., Universitat Autònoma de Barcelona. Departament de Medicina, and Centro de Investigación Biomédica en Red Cáncer (España)
- Subjects
Cancer Research ,Acute myeloid leukemia ,Medicina ,Salvage therapy ,acute myeloid leukemia ,FLT3-ITD mutation ,real-world outcomes ,relapsed/refractory disease ,salvage therapy ,Oncología ,relapsed ,Relapsed/refractory disease ,refractory disease ,Oncology ,Real-world outcomes - Abstract
This retrospective study investigated outcomes of 404 patients with relapsed/refractory (R/R) FMS-like tyrosine kinase 3 (FLT3)-internal tandem duplication (ITD) acute myeloid leukemia (AML) enrolled in the PETHEMA registry, pre-approval of tyrosine kinase inhibitors. Most patients (63%) had received first-line intensive therapy with 3 + 7. Subsequently, patients received salvage with intensive therapy (n = 261), non-intensive therapy (n = 63) or supportive care only (n = 80). Active salvage therapy (i.e., intensive or non-intensive therapy) resulted in a complete remission (CR) or CR without hematological recovery (CRi) rate of 42%. More patients achieved a CR/CRi with intensive (48%) compared with non-intensive (19%) salvage therapy (p < 0.001). In the overall population, median overall survival (OS) was 5.5 months; 1- and 5-year OS rates were 25% and 7%. OS was significantly (p < 0.001) prolonged with intensive or non-intensive salvage therapy compared with supportive therapy, and in those achieving CR/CRi versus no responders. Of 280 evaluable patients, 61 (22%) had an allogeneic stem-cell transplant after they had achieved CR/CRi. In conclusion, in this large cohort study, salvage treatment approaches for patients with FLT3-ITD mutated R/R AML were heterogeneous. Median OS was poor with both non-intensive and intensive salvage therapy, with best long-term outcomes obtained in patients who achieved CR/CRi and subsequently underwent allogeneic stem-cell transplant., This study was supported by Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Valencia, Spain [CB16/12/00284].
- Published
- 2022