CHAF1A and neuroblastoma: The differentiation inducer 13‐cis‐RA is commonly used as maintenance therapy for high‐risk patients with NB.[9] We previously showed that RA downregulates CHAF1A expression, and CHAF1A depletion promotes neuronal differentiation in RA‐sensitive NB cells.[26] To investigate the role of CHAF1A in RA‐induced neuronal differentiation, we generated NGP‐CHAF1A cells where CHAF1A expression can be conditionally turned on (Figure S2e, Supporting Information).