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FDA grants fast track designation for LYT-200 in R/R AML and MDS

By Haimanti Mandal

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Jan 10, 2025

Learning objective: After reading this article, learners will be able to cite a new clinical development in the treatment of acute myeloid leukemia.


On January 9, 2025, the U.S. Food and Drug Administration (FDA) granted fast track designation for LYT-200, a first-in-class anti-galectin-9 monoclonal antibody, for the treatment of patients with relapsed/refractory (R/R) acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS).1 LYT-200 was previously granted orphan drug designation on March 14, 2024.2

LYT-200 is currently being evaluated in a phase I/II trial (NCT05829226) both as monotherapy and in combination with the standard-of-care venetoclax and hypomethylating agents (HMAs) for the treatment of patients with R/R AML/MDS who have received 1 line of prior treatment. Data presented during the 66th American Society of Hematology (ASH) Annual Meeting and Exposition 2024 showed that3: 

  • Of 22 evaluable patients receiving LYT-200 monotherapy, 59% achieved stable disease or better, with two partial responses. 

  • Of 15 evaluable patients receiving LYT-200 in combination with venetoclax/HMA, 80% attained stable disease or better, including two complete responses and one morphologic leukemia free state. 

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