Abstract
Acute lymphoblastic leukemia (ALL) is the most common cancer in childhood, originating from a neoplastic deviation of B or T lymphocyte. Cytogenetic, cytofluorimetric, and genomic analyses clearly defined several subtypes of ALL. However, the leukemogenic process is characterized by different pathways' alteration which are still to be determined, in the attempt to identify specific targets to be druggable. In this review, we explore the main molecular pathways, which are commonly shared between different subtypes of pediatric ALL. These cell-signaling pathways affect many functions, including cell proliferation, apoptosis, migration, and differentiation. The PI3K/AKT/mTOR pathway is one of the most studied, with higher expected promises of being targetable. RAS pathway is also widely studied in all types of cancer. The Wnt/Beta catenin has been recently studied in ALL. Finally, CXCL12/CXCL4 axis has a crucial role in regulating hematopoietic stem cell and bone marrow niche. The complete characterization of these pathways will allow us to design a specific patient–disease profile associated with a tailored treatment, with the highest grade of efficacy and the lowest grade of toxicity.
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