Neuroblastoma is a pediatric solid tumor characterized by dysregulation of the CDK-RB-E2F axis, leading to elevated E2F activity, uncontrolled progression through the G1/S transition and an aggressive tumor phenotype. Researchers from Circle Pharma Inc. and collaborators presented preclinical data on CID-078, a first-in-class oral macrocycle with dual cyclin A and B RxL inhibitory activity, in models of neuroblastoma.