SLC25A5 and neuroblastoma: Another combination of vorinostat and PENAO (4-(N-(S-penicillaminylacetyl)amino)-phenylarsonous acid), a mitochondrial adenine nucleotide translocase 2 (SLC25A5/ANT2) inhibitor, resulted in synergistic reduced cell viability, and the induction of apoptosis in NB cells.