Accelerating Pediatric Oncology Drug Development: Advances in Clinical Pharmacology, Trial Design, Non-Clinical Evidence, and Regulatory Science.
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Pediatric oncology drug development remains uniquely challenging due to the rarity and biological heterogeneity of childhood cancers, ethical considerations in trial conduct, and the limited feasibility of large, randomized studies. Despite these barriers, recent years have seen a notable acceleration in the approval of oncology therapies for pediatric populations, driven by advances in molecularly targeted treatments, evolving regulatory requirements, and innovation in trial design. Reducing nonclinical data requirements and increasing the adaptation of model‑informed drug development approaches are also contributing to advances in pediatric oncology treatment by supporting dose selection, optimizing study design, and reducing unnecessary patient burden. In this review, recent regulatory requirements from the United States, the EU, and other key regions on pediatric oncology drug development are discussed. Thirty-three drugs with oncology indications in pediatric populations approved by the US FDA between 2018 and 2025 are reviewed. These approvals provide examples of how nonclinical and clinical data were generated with a focus on strategies for dose-finding and justification. Common challenges and considerations related to clinical operations and formulation development in pediatric populations and the emerging use of real-world data, external controls, and artificial intelligence/machine learning are also discussed.