CHS-828, also known as GMX-1778, is a potent and selective NAMPT inhibitor. CHS-828 inhibits cellular synthesis of NAD. CHS 828 kill tumour cells by inhibiting the nuclear factor-kappaB translocation but unlikely through down-regulation of proteasome. CHS 828 has shown promising anticancer activity in experimental tumor models and primary cultures of cancer cells from patients. CHS 828 showed a synergistic effect with melphalan in 67%, doxorubicin in 47%, etoposide in 38% and Ara-C in 14% of AML samples.