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, Josefina, Mariz, José, Gil, Cristina, Tormo, Mar, Martínez Sánchez, María Del Pilar, Rodríguez Arbolí, Eduardo, García Boyero, Raimundo, Rodríguez Medina, Carlos, Martínez Chamorro, Carmen, Polo, Marta, Bergua, Juan, Aguiar, Eliana, Amigo, María L., Herrera, Pilar, Alonso Domínguez, Juan Manuel, Bernal, Teresa, Espadana, Ana, Sayas, María J., Algarra, Lorenzo, Vidriales, María B., Vasconcelos, Graça, Vives, Susana, Pérez Encinas, Manuel M., López, Aurelio, Noriega Concepción, Víctor, García Fortes, María, Chillón, María C., Rodríguez Gutiérrez, Juan I., Calasanz, María J., Labrador, Jorge, López, Juan A., Boluda, Blanca, Rodríguez Veiga, Rebeca, Martínez López, Joaquín, Barragán, Eva, Sanz, Miguel A., Montesinos, Pau, Martínez Cuadrón, David, Serrano, Josefina, Mariz, José, Gil, Cristina, Tormo, Mar, Martínez Sánchez, María Del Pilar, Rodríguez Arbolí, Eduardo, García Boyero, Raimundo, Rodríguez Medina, Carlos, Martínez Chamorro, Carmen, Polo, Marta, Bergua, Juan, Aguiar, Eliana, Amigo, María L., Herrera, Pilar, Alonso Domínguez, Juan Manuel, Bernal, Teresa, Espadana, Ana, Sayas, María J., Algarra, Lorenzo, Vidriales, María B., Vasconcelos, Graça, Vives, Susana, Pérez Encinas, Manuel M., López, Aurelio, Noriega Concepción, Víctor, García Fortes, María, Chillón, María C., Rodríguez Gutiérrez, Juan I., Calasanz, María J., Labrador, Jorge, López, Juan A., Boluda, Blanca, Rodríguez Veiga, Rebeca, Martínez López, Joaquín, Barragán, Eva, Sanz, Miguel A., and Montesinos, Pau
- 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., Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Depto. de Medicina, Fac. de Medicina, TRUE, pub
- Published
- 2022