CD276 and neuroblastoma: The present manuscript aims to investigate the clinical significance of B7H3 and the miR-29 family (miR-29a, miR-29b, and miR-29c) in NB patients and PDX tumors, with a focus on understanding the regulatory role of these miRNAs on B7H3 expression, immune cell function, NB growth, and tumorigenicity using a combination of in vitro and in vivo approaches.