Abstract
Children are surviving cancer in greater numbers than ever. Over the last 50 years, substantial advancements in pediatric cancer treatment have resulted in an 85% 5-year survival rate. Nonetheless, a notable 10%-15% of patients encounter relapse or develop refractory disease, leading to significantly lower survival. Recent attempts to further intensify cytotoxic chemotherapy have failed due to either severe toxicities or ineffectiveness, highlighting the need for new treatment strategies. Immunotherapies are emerging and expanding their clinical application to a wide array of cancers, including those affecting children. In pediatric cancers, monoclonal antibodies targeting GD2 have demonstrated durable radiographic and histologic responses in neuroblastoma (NB), and CD19-targeted bispecific antibodies (BsAbs) and chimeric antigen receptor (CAR) T cells have likewise changed the outlook for refractory acute lymphoblastic leukemia (ALL) in children. This review discusses the clinical development of immunotherapies for pediatric cancers, focusing on pediatric ALL and NB, two major pediatric cancers transformed by immunotherapy, updates on the recent advancements in immunotherapies, and further discusses the future directions of immunotherapy for pediatric cancers.
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