Introducción: Algunos pacientes con leucemia linfocítica crónica (LLC) terminan el tratamiento con ibrutinib por toxicidad o progresión de la enfermedad (PE). El inicio de otros tratamientos puede asociarse a una rápida PE debido a la interrupción de ibrutinib. Objetivo: Lograr la transición de los pacientes en tratamiento con ibrutinib a regímenes basados en venetoclax mediante un protocolo que minimice el riesgo de eventos adversos. Material y métodos: Cuatro pacientes con LLC que progresaron y requirieron una transición fueron manejados con nuestro protocolo, que consiste en un periodo de cinco semanas de reducción de la dosis de ibrutinib y aumento de la de venetoclax. El venetoclax se inicia a 20 mg diarios con un aumento semanal hasta un máximo de 400 mg diarios y el ibrutinib se reduce durante tres semanas hasta la suspensión definitiva del tratamiento en la semana 4. Los pacientes son monitorizados para identificar el riesgo o la aparición de síndrome de lisis tumoral. Resultados: Todos los pacientes alcanzaron una transición exitosa, sin PE rápida ni eventos adversos. Conclusiones: El protocolo de transición de cinco semanas puede aplicarse exitosamente para los pacientes con LLC que requieren un cambio de ibrutinib a venetoclax.
Background: Some patients with chronic lymphocytic leukemia (CLL) terminate ibrutinib treatment due to toxicity or disease progression (DP). Initiation of other treatments may be associated with a rapid DP due to ibrutinib discontinuation.Objective: This study aims to successfully transition patients from ibrutinib-to venetoclax-based regimens through a clinical protocol that minimizes the risk for adverse outcomes. Methods: Four patients with CLL who progressed and required a transition were managed using our switch protocol which consists of a 5-week period during which the dose of ibrutinib is reduced and the dose of venetoclax increased on a weekly basis. Venetoclax is initiated at 20 mg daily with a weekly escalation to a maximum of 400 mg daily and ibrutinib is decreased over a 3-week period with a definitive suspension of treatment at week 4. Patients are monitored for the risk or onset of de lisis tumoral. Results: All patients were successfully transitioned without rapid DP or adverse events commonly associated with ibrutinib discontinuation. Conclusions: A 5-week transition protocol can be successfully applied for the transition of patients with CLL requiring a switch from ibrutinib to venetoclax due to toxicity or DP.
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