ABCB1 and neuroblastoma: Moreover, the analysis of gene expression datasets of more than 50 different neuroblastoma cell lines (primary and relapsed) and more than 160 neuroblastoma patient samples from the pediatric precision medicine platform INFORM (Individualized Therapy For Relapsed Malignancies in Childhood) confirmed a pivotal role of ABCB1 specifically in neuroblastoma resistance at relapse39.