Simtuzumab
{{Short description|Monoclonal antibody}}
{{Drugbox
| type = mab
| image =
| alt =
| mab_type = mab
| source = zu
| target = LOXL2
| tradename =
| Drugs.com =
| MedlinePlus =
| pregnancy_AU =
| pregnancy_US =
| pregnancy_category=
| legal_AU =
| legal_CA =
| legal_UK =
| legal_US =
| legal_status =
| routes_of_administration =
| bioavailability =
| protein_bound =
| metabolism =
| elimination_half-life =
| excretion =
| CAS_number = 1318075-13-6
| ATC_prefix = none
| ATC_suffix =
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 11Z5AIU653
| PubChem =
| IUPHAR_ligand = 8412
| DrugBank =
| ChemSpiderID = none
| C=6558 | H=10134 | N=1736 | O=2037 | S=50
}}
Simtuzumab (INN; formerly GS 6624) is a humanized monoclonal antibody designed for the treatment of fibrosis.[http://www.ama-assn.org/resources/doc/usan/simtuzumab.pdf Statement On A Nonproprietary Name Adopted By The USAN Council - Simtuzumab], American Medical Association. It binds to LOXL2 and acts as an immunomodulator.{{cite journal | author = World Health Organization | title = International Nonproprietary Names for Pharmaceutical Substances (INN). Proposed INN: List 107 | journal = WHO Drug Information | volume = 26 | issue = 2 | year = 2012 | url =https://www.who.int/medicines/publications/druginformation/innlists/Final_PL107.pdf }} In January 2016, Gilead Sciences terminated its Phase 2 clinical study in patients with idiopathic pulmonary fibrosis (IPF) due to lack of efficacy. {{cite web | title = Gilead Terminates Phase 2 Study of Simtuzumab in Patients With Idiopathic Pulmonary Fibrosis | date = 5 January 2016 | publisher = Gilead | url = http://www.gilead.com/news/press-releases/2016/1/gilead-terminates-phase-2-study-of-simtuzumab-in-patients-with-idiopathic-pulmonary-fibrosis}}