Icosabutate (also known as PRC-4016 or NST-4016), a cholesterol ester transfer protein inhibitor was developed by NorthSea Therapeutics for the treatment of combined dyslipidemias and hypertriglyceridemia. Icosabutate successfully completed phase II clinical trial for hypertriglyceridemic subjects, where was studied the drug efficacy and safety. In April 2018 NorthSea Therapeutics announced that its lead product, icosabutate would be further developed as an effective and safe therapeutic approach to treating both non-alcoholic steatohepatitis and its associated comorbidities.

CB-5083 is a novel first in class, potent orally bio-available p97 inhibitor that disrupts cellular protein homeostasis and demonstrates anti-tumor activity in solid and hematological models. CB-5083 causes rapid and sustained accumulation of poly-ubiquitin in tumor xenografts after a single administration. CB-5083 showed activity to inhibit tumor growth in multiple rodent models of human cancer. Furthermore, CB-5083 appears to exhibit greater potency over current proteasome inhibitors that further validate targeting p97 and protein homeostasis in the treatment of cancer. CB-5083 is a potent inhibitor of endoplasmic reticulum associated degradation and induces a lethal unfodled protein response. CB-5083 recently began Phase 1 testing in relapsed/refractory or refractory multiple myeloma, and advanced solid tumors.

NSI-189 is a novel oral drug which was developed by Neuralstem for the treatment of cognitive disorders. Now the drug is being tested in phase II of clinical trials in patients suffering from major depressive disorder. The mechanism of NSI-189 action is explained by its ability to stimulate the generation of new neurons in the hippocampus, however the exact target molecule is still unknown.

SN38 (7-ethyl-10-hydroxy camptothecin) is a prominent and efficacious anticancer agent. It is poorly soluble in both water and pharmaceutically approved solvents; therefore, the direct formulation of SN38 in solution form is limited. SN38 is formed via hydrolysis of irinotecan by carboxylesterases and metabolized via glucuronidation by UGT1A1. Currently, the water soluble prodrug of SN38, irinotecan (CPT-11), is formulated as a low pH solution and is approved for chemotherapy. SN38 causes the strongest inhibition of DNA topoisomerase I, followed by CPT and then CPT-11. CPT-11 dose dependently shifts the position of relaxed DNA in the direction of nicked DNA, but SN38 and CPT shows no effect on the position of relaxed DNA. SN38 dose-dependently and time-dependently inhibit DNA synthesis. Respective IC50 values of SN38, in DNA synthesis is 0.077 uM.

Elacridar is an oral bioenhancer that targets multiple drug resistance in tumors. Elacridar is a strong and relatively specific inhibitor of P-gp and BCRP, two main efflux transporters. Development of elacridar is assumed to have been discontinued.