Vol 12, Supp. D (2021)
Case report
Published online: 2022-11-07

open access

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Difficulties in the management of a patient with acute myeloid leukaemia and high mutant allelic ratio FLT3-ITD — refractoriness to the standard induction therapy along with midostaurin

Elżbieta Patkowska1, Joanna Sawczuk-Chabin1, Iwona Solarska2, Katarzyna Borg3, Ewa Lech-Marańda1

Abstract

The development of targeted therapies in AML patients enabling treatment individualization, such as new FLT3 tyrosine kinase inhibitors, is a promising option for improving treatment outcomes and prolonging patient survival. However, the treatment of patients with a high FLT3-ITD allelic ratio (FLT3-ITDhigh) associated with an extremely unfavourable prognosis remains a major clinical problem. The study presents a case of a 20-year-old patient with FLT3-ITDhigh extramedullary AML at diagnosis. Individualized chemotherapy according to the DA ‘3 + 7’ regimen combined with midostaurin was administered. After the induction treatment, complete remission (CR) was not achieved. After second induction chemotherapy, CR1 was achieved with the presence of residual disease. One cycle of consolidation chemotherapy was then administered, and after myeloablative conditioning allogeneic hematopoietic stem cell transplantation from an unrelated donor was performed. The patient has remained in CR with no residual disease for 18 months.

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Hematology in Clinical Practice