FLT3 (Fms-related tyrosine kinase 3)

Functionally, MV4-11QR cells showed broad cross-resistance to clinically relevant agents, including midostaurin, venetoclax, and cytarabine. Importantly, pharmacological targeting of mutant p53 with eprenetapopt or MAPK signaling with trametinib restored sensitivity to quizartinib, inducing synergistic or additive cytotoxic effects and increased apoptosis. Together, these findings define a multilayered resistance program involving genetic, signaling, and metabolic adaptations and support rational combination strategies to overcome FLT3 inhibitor resistance in AML.

Key advancements include the integration of FLT3 inhibitors into intensive chemotherapy and the emergence of venetoclax...Innovations such as the liposomal formulation CPX-351 and oral formulations of CC-486 and oral decitabine/cedazuridine have further optimized treatment delivery and improved patient quality of life...Current research is actively exploring next-generation inhibitors, antibody-drug conjugates, and cellular immunotherapies such as BiTEs and CAR-T cells. This review summarizes the recent pharmacological evolution in AML and discusses how these emerging therapies bring us closer to the ultimate goal of achieving a definitive cure.

This study highlights potential metabolite signatures associated with in vitro SYK-targeted therapy in AML. These findings support future research to identify potential serum biomarkers, guiding personalized SYK inhibition strategies in AML.

Subsequently, the CML burden declined as the AML clone regrew. This case highlights the importance of accurately assessing clonal changes using genetic analysis when implementing molecular targeted therapy for hematologic malignancies.

First-generation inhibitors, such as midostaurin, provided the foundation for targeted therapy, while recently developed agents such as gilteritinib and quizartinib have shown more selectivity and demonstrated superior clinical efficiency and improved tolerability. This review discusses the significance of FLT-3 mutations, the evolution of targeted therapies, current treatment guidelines, and ongoing challenges such as resistance and high relapse rates. We also discuss the emerging combinations of therapies and novel agents currently in clinical trials that aim to overcome resistance and improve long-term outcomes for patients with FLT-3-mutated AML.

Disease-modifying activity with decreases in mutated clones is rare. Although the exact mechanism behind our findings remains undetermined, they are in line with the proposed effects of HMA on epigenetics in leukemia cells.

In the subgroup analysis, post-HSCT gilteritinib showed an RFS benefit in cord blood transplantation (CBT; 79.4% vs. 26.1%, p < 0.001), but not in bone marrow or peripheral blood stem cell transplantation. This Japanese real-world study supports the tolerability and effectiveness of post-HSCT gilteritinib in R/R FLT3-mutated AML.

This case highlights potential ocular neurotoxicity associated with Gilteritinib, a targeted therapy not previously linked to corneal nerve dysfunction. Increased clinical awareness is recommended for ophthalmologists and hematologists managing patients with FLT3-mutated AML who are receiving targeted therapies.

Although the OS from diagnosis improved significantly in the FLT3i era, relapse after allo-HSCT remained a substantial challenge. Further studies are needed to optimize FLT3i maintenance therapy strategies.

However, there is growing literature that patterns of co-mutation, and more importantly, postremission measurable residual disease (MRD) status, modify these risks dynamically; necessitating an adaptive approach to optimize patient outcomes. In this review, we summarize evidence on how molecular and MRD features could assist clinicians in identifying high-risk patients within these favorable-risk subgroups, and where escalation of therapy, including with allogeneic transplantation in first remission, may be beneficial.