RT Journal Article T1 Relevance of infections on the outcomes of patients with myelodysplastic syndromes, chronic myelomonocytic leukemia, and acute myeloid leukemia treated with hypomethylating agents: a cohort study from the GESMD. A1 Vilorio-Marqués, Laura A1 Castañón Fernández, Christelle A1 Mora, Elvira A1 Gutiérrez, Lorena A1 Rey Bua, Beatriz A1 Jiménez Lorenzo, Maria José A1 Díaz Beya, Marina A1 Vara Pampliega, Miriam A1 Molero, Antonieta A1 Sánchez-García, Joaquín A1 Calabuig, Marisa A1 Cedena, Maria Teresa A1 Chen-Liang, Tzu A1 Díaz Santa, Johana Alejandra A1 Padilla, Irene A1 Hernández, Francisca A1 Díez, Rosana A1 Asensi, Pedro A1 Xicoy, Blanca A1 Sanz, Guillermo A1 Valcárcel, David A1 Diez-Campelo, María A1 Bernal, Teresa K1 acute myeloid leukemia K1 hypomethylating agent K1 infection K1 myelodysplastic syndrome K1 treatment outcome AB The consequences of infectious toxicity of hypomethylating agents (HMAs) on overall survival (OS) of patients diagnosed with high-risk myeloid neoplasms have not been thoroughly investigated. We aimed to evaluate whether infectious events (IEs) negatively influenced the results of HMA treatment in a real-world setting. Observational study. We obtained data from 412 non-selected consecutive patients from 23 Spanish hospitals who were diagnosed with high-risk myelodysplastic syndrome, chronic myelomonocytic leukemia, or acute myeloid leukemia and were treated with HMA. HMAs received after chemotherapy or stem cell transplant were excluded. All IEs were recorded. Outcomes included OS, modifications to the pre-planned treatment, incidence and characteristics of IEs, hospitalization, red blood cell transfusions, and factors associated with infection. The rate of infection was 1.2 per patient/year. Next-cycle delay (p = 0.001) and hospitalizations (p = 0.001) were significantly influenced by IEs. Transfusion requirements during each cycle were significantly higher after infection compared with cycles without infection (coefficient = 1.55 [95% confidence interval (CI) = 1.26-1.84], p 20% (HR = 1.57 [95% CI = 1.19-2.01], p 9 g/dl (HR = 0.65 [95% CI = 0.51-0.82], p  HMA infectious toxicity worsens OS, hinders the adherence to antineoplastic treatment and results in significant morbidity. Preventive strategies are fundamental in vulnerable patients. SN 2040-6207 YR 2022 FD 2022-09-29 LK http://hdl.handle.net/10668/20232 UL http://hdl.handle.net/10668/20232 LA en DS RISalud RD Apr 6, 2025