NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

ASK1 inhibitor GS-4997
An orally bioavailable inhibitor of apoptosis signal-regulating kinase 1 (ASK1), with potential anti-inflammatory, antineoplastic and anti-fibrotic activities. Upon oral administration, ASK1 inhibitor GS-4997 targets and binds to the catalytic kinase domain of ASK1 in an ATP-competitive manner, thereby preventing its phosphorylation and activation. This prevents the phosphorylation of downstream kinases, such as c-Jun N-terminal kinases (JNKs) and p38 mitogen-activated protein kinase (p38 MAPK). By preventing the activation of ASK1-dependent signal transduction pathways, GS-4997 prevents the production of inflammatory cytokines, down-regulates the expression of genes involved in fibrosis, suppresses excessive apoptosis and inhibits cellular proliferation. ASK1, also called mitogen-activated protein kinase kinase kinase 5 (MAP3K5), is activated in response to oxidative and endoplasmic reticulum (ER) stress, calcium influx and infection. It plays a key role in the development of certain cardiovascular and neurodegenerative diseases, diabetes, as well as certain types of cancer. Check for active clinical trials using this agent. (NCI Thesaurus)

Code name:GS-4997