GPP78 is a potent inhibitor of Nampt (IC50: 3.0 nM for nicotinamide adenine dinucleotide (NAD) depletion). GPP78 is cytotoxic to neuroblastoma cell line SH-SY5Y cells (IC50: 3.8 nM by inducing autophagy). GPP78 has anti-cancer and anti-inflammatory effect