FOXD3 and neuroblastoma: Administration of DNA methyltransferase inhibitor 5-aza-2'-deoxycytidine (5-Aza-CdR) or pan histone deacetylase inhibitor trichostatin A (TSA) resulted in increased FOXD3 transcript levels in NB cells (Figure S2), indicating that epigenetic mechanisms were likely to be involved in the regulation of FOXD3.