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Experimental hematology & oncology · 2025

Hypomethylating agents plus venetoclax for high-risk MDS and CMML as bridge therapy to transplant: a GESMD study.

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Zugasti Ines, Lopez-Guerra Monica, Castaño-Díez Sandra, Esteban Daniel, Avendaño Alejandro, Pomares Helena, Perez Ana, García-Ávila Sara, Conejo Irene Padilla, de la Fuente Montes Cristina, Martínez-Roca Alexandra, Merchán Beatriz, Jiménez-Vicente Carlos, Guijarro Francesca, Álamo Jose Ramón, Cortes-Bullich Albert, Torrecillas Victor, Mont Lucia, Carcelero Esther, Riu Gisela, Zamora Lurdes, Bargay Joan, Triguero Ana, Suarez-Lledó Maria, Salas Maria Queralt, López-Cadenas Felix, Ramos Fernando, Xicoy Blanca, Valcárcel David, Arnan Montserrat, Martínez Carmen, Rovira Montserrat, Fernández-Avilés Francesc, Díez-Campelo Maria, Esteve Jordi, Díaz-Beyá Marina

Аннотация

BACKGROUND: High-risk myelodysplastic syndromes (HR-MDS) and chronic myelomonocytic leukemia (CMML) remain therapeutic challenges with suboptimal outcomes. The only potentially curative treatment is allogeneic stem cell transplantation (allo-SCT). The most frequent pre-allo-SCT treatment is monotherapy with hypomethylating agents (HMA), but approximately 40% of patients cannot proceed to allo-SCT, mainly due to disease progression. Recent evidence suggests that combining HMA with venetoclax (HMA/VEN) could increase HMA efficacy in HR-MDS but it remains unclear if this combination could bridge more patients to allo-SCT.

METHODS: We retrospectively evaluated HMA/VEN as a bridge to allo-SCT in 30 patients with HR-MDS or CMML eligible for transplant. Eighteen patients were treatment-naïve and 12 were refractory or relapsed (R/R).

RESULTS: As defined by the IWG 2023 criteria, the overall response rate (ORR) was 90% and the composite complete response rate was 77%. For the R/R patients, ORR was 83%. The allo-SCT rate was 83%, and the allo-SCT rate of those patients treated exclusively with HMA/VEN without further bridge therapies was 76%. One- and two-year post-allo-SCT survival was 75% and two-year cumulative incidence of relapse was 30.5%. Follow-up of measurable residual disease identified some molecular relapses that were controlled with preemptive treatment.

CONCLUSIONS: Our findings indicate that HMA/VEN combination therapy shows promise as a bridging strategy to allo-SCT in HR-MDS and CMML.

ИП Урсолов Владлен Сергеевич

ИНН 500118482352 · ОГРНИП 314500117700049

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