RT Journal Article T1 Characteristics and Outcomes of Adult Patients in the PETHEMA Registry with Relapsed or Refractory FLT3-ITD Mutation-Positive Acute Myeloid Leukemia. A1 Martinez-Cuadron, David A1 Serrano, Josefina A1 Mariz, Jose A1 Gil, Cristina A1 Tormo, Mar A1 Martinez-Sanchez, Pilar A1 Rodriguez-Arboli, Eduardo A1 Garcia-Boyero, Raimundo A1 Rodriguez-Medina, Carlos A1 Martinez-Chamorro, Carmen A1 Polo, Marta A1 Bergua, Juan A1 Aguiar, Eliana A1 Amigo, Maria L A1 Herrera, Pilar A1 Alonso-Dominguez, Juan M A1 Bernal, Teresa A1 Espadana, Ana A1 Sayas, Maria J A1 Algarra, Lorenzo A1 Vidriales, María B A1 Vasconcelos, Graça A1 Vives, Susana A1 Perez-Encinas, Manuel M A1 Lopez, Aurelio A1 Noriega, Victor A1 Garcia-Fortes, María A1 Chillon, Maria C A1 Rodriguez-Gutierrez, Juan I A1 Calasanz, Maria J A1 Labrador, Jorge A1 Lopez, Juan A A1 Boluda, Blanca A1 Rodriguez-Veiga, Rebeca A1 Martinez-Lopez, Joaquin A1 Barragan, Eva A1 Sanz, Miguel A A1 Montesinos, Pau K1 FLT3-ITD mutation K1 Acute myeloid leukemia K1 Real-world outcomes K1 Relapsed/refractory disease K1 Salvage therapy AB 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 therapycompared 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-ITDmutated 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. PB MDPI SN 2072-6694 YR 2022 FD 2022-05-31 LK http://hdl.handle.net/10668/20901 UL http://hdl.handle.net/10668/20901 LA en NO Martínez-Cuadrón D, Serrano J, Mariz J, Gil C, Tormo M, Martínez-Sánchez P, et al. Characteristics and Outcomes of Adult Patients in the PETHEMA Registry with Relapsed or Refractory FLT3-ITD Mutation-Positive Acute Myeloid Leukemia. Cancers (Basel). 2022 Jun 6;14(11):2817 DS RISalud RD Apr 12, 2025