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Updated: Feb 13, 2026

In Ovo Xenografting of Patient-Derived Acute Lymphoblastic Leukemia (ALL) Cells (PDX-ALL)
Published on: August 1, 2025
Inotuzumab ozogamicin for the treatment of patients with acute lymphocytic leukemia
1Division of Hematology and Medical Oncology, Department of Medicine, University of California Irvine Medical Center, Orange, California, USA. choudhry@uci.edu.
Abstract:
Inotuzumab ozogamicin is an antibody-drug conjugate comprised of a humanized anti-CD22 monoclonal antibody conjugated to calicheamicin, a cytotoxic antibiotic agent. Inotuzumab ozogamicin binds to CD22-expressing tumor cells, resulting in apoptotic cell death. Based on the results of the pivotal, phase III INO-VATE trial in acute lymphoblastic leukemia (ALL), approval of inotuzumab ozogamicin was recently granted for the treatment of patients with relapsed or refractory ALL, a group that otherwise has a poor prognosis with standard chemotherapy. Several ongoing clinical trials are now testing whether outcomes can be further improved by combining inotuzumab ozogamicin with low-dose chemotherapy or by including inotuzumab ozogamicin in the front-line setting. In this article we discuss the preclinical, clinical and safety data of inotuzumab ozogamicin.
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