From monoclonals to bispecific T cell engagers: the evolving antibody-based therapy landscape in acute myeloid leukemia - Report - MDSpire

From monoclonals to bispecific T cell engagers: the evolving antibody-based therapy landscape in acute myeloid leukemia

  • By

  • Milad Rasouli

  • Marie Dalem

  • Marc H.G.P. Raaijmakers

  • Peter D. Katsikis

  • Stefan J. Erkeland

  • June 1, 2026

  • 0 min

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Clinical Report: Advancements in Antibody-Based Treatments for Acute Myeloid Leukemia

Overview

This report discusses the evolving landscape of antibody-based therapies for acute myeloid leukemia (AML), particularly focusing on bispecific T cell engagers (BTCEs). Despite the challenges in targeting AML due to antigen heterogeneity, promising early-phase clinical results suggest potential for these therapies in relapsed/refractory settings.

Background

Acute myeloid leukemia (AML) is a highly aggressive malignancy with a poor prognosis, necessitating innovative treatment strategies. Traditional chemotherapy regimens often lead to relapse, highlighting the need for targeted therapies. Antibody-based treatments, particularly BTCEs, are being explored as a means to improve outcomes in AML patients.

Data Highlights

No specific numerical data provided in the source material.

Key Findings

  • AML is characterized by the clonal expansion of malignant myeloid blasts, complicating treatment.
  • Only gemtuzumab ozogamicin has received FDA approval for AML, reflecting the challenges in developing effective antibody therapies.
  • BTCEs can target two distinct antigens, potentially enhancing therapeutic efficacy in AML.
  • Early-phase studies indicate that antibody-based approaches may complement traditional cytotoxic regimens.
  • Challenges include antigen heterogeneity and the risk of on-target/off-leukemia toxicity.

Clinical Implications

The development of BTCEs represents a significant advancement in the treatment of AML, particularly for patients with relapsed or refractory disease. Ongoing clinical trials will be crucial in determining the safety and efficacy of these novel therapies.

Conclusion

Antibody-based therapies, especially BTCEs, are emerging as promising options for AML treatment, with ongoing research needed to address existing challenges and optimize patient outcomes.

Related Resources & Content

  1. American Society of Hematology, Guidelines Update, 2025 -- AML Summary of Changes
  2. Cullinan Therapeutics, Preliminary anti-leukemia activity from a phase 1 study of CLN-049, 2025
  3. Frontiers, Bispecific antibodies in immunotherapy for acute leukemia, 2025
  4. The ASCO Post — Blinatumomab ‘Takes a BiTE’ Out of Acute Lymphoblastic Leukemia
  5. Blood Cancer Journal — T-cell ligands modulate the cytolytic activity of the CD33/CD3 BiTE antibody construct, AMG 330
  6. Blood Cancer Journal — Current Insights and Future Directions on Bi- and Tri-specific Antibodies for Non-Hodgkin Lymphoma
  7. Blood Cancer Journal — Acute myeloid leukemia targets for bispecific antibodies
  8. Blinatumomab ‘Takes a BiTE’ Out of Acute Lymphoblastic Leukemia
  9. T-cell ligands modulate the cytolytic activity of the CD33/CD3 BiTE antibody construct, AMG 330
  10. Current Insights and Future Directions on Bi- and Tri-specific Antibodies for Non-Hodgkin Lymphoma
  11. Acute myeloid leukemia targets for bispecific antibodies
  12. https://www.hematology.org/-/media/hematology/files/clinicians/guidelines/ash-guidelines-update-2025/aml-summary-of-changes-final.pdf
  13. Preliminary anti-leukemia activity from a phase 1 study of CLN-049, a novel anti-FLT3 x anti-CD3 bispecific T-cell engager, in relapsed/refractory (R/R) acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS)
  14. Frontiers | Bispecific antibodies in immunotherapy for acute leukemia: latest updates from the 66th annual meeting of the American society of hematology, 2024
  15. CD123‐targeting immunotherapeutic approaches in acute myeloid leukaemia - PMC

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