Eltanexor (KPT-8602) is an investigational second-generation Selective Inhibitor of Nuclear Export (SINE) compound that is designed to selectively block the nuclear export protein XPO1. Most of the key tumor suppressor proteins (TSPs), are cargos of XPO1 and inhibition of XPO1 by eltanexor is believed to sequester TSPs in the nucleus where they can carry out their normal functions. Karyopharm Therapeutics is developing eltanexor for the treatment of relapsed/refractory cancers.

Tefinostat (also known as CHR-2845) was developed as an innovative oral HDAC (histone deacetylase) inhibitor that selectively targets macrophages and monocytes – central cells of the innate immune system. Chroma Therapeutics develops tefinostat for the treatment of hematological and lymphoid malignancies. In addition, the drug is under investigation in clinical trial phase I/II for cancer-associated inflammation in hepatocellular carcinoma. The aim of this study is to find the best dose of the drug without causing side effects. Besides, Phase II of clinical trial ‘MONOCLE’ study for the treatment of chronic myelomonocytic leukemia (CMML) has been initiated and the first patient has been recruited.