P398: DEVELOPMENT AND CHARACTERIZATION OF PRECLINICAL IN VIVO MODELS FOR THE IDENTIFICATION AND TESTING OF NEW THERAPEUTIC APPROACHES FOR PEDIATRIC ACUTE MYELOID LEUKEMIA - A. Da Ros; V. Indio; E. Porcù; G. Borella; M. Benetton; C. Tregnago; G. Longo; S. Cairo; B. Michielotto; S. Bresolin; B. Buldini; A. Pession; et al. (HemaSphere, 2022)