eltrombopag eltrombopag eltrombopag, sold under the brand name promacta among others, is a medication used to treat thrombocytopenia (abnormally low platelet counts) and severe aplastic anemia. eltrombopag is sold under the brand name revolade outside the us and is marketed by novartis. it is a thrombopoietin receptor agonist. it is taken by mouth. eltrombopagclinical datatrade namespromacta, revolade, alvaizother namessb-497115-grahfs/drugs.commonographmedlineplusa609011license data eu ema: by eltrombopag olamine us dailymed: eltrombopag_olamine us fda: eltrombopag pregnancycategory au: b3 routes ofadministrationby mouthatc codeb02bx05 (who) legal statuslegal status au: s4 (prescription only) uk: pom (prescription only) us: ℞-only eu: rx-only pharmacokinetic databioavailability~52%protein binding>99%metabolismextensive liver (through cyp1a2 and cyp2c8)elimination half-life21–35 hoursexcretionfeces (59%), urine (31%)identifiers iupac name 3'--2'-hydroxy-3-biphenylcarboxylic acid cas number496775-61-2 nas olamine: 496775-62-3pubchem cid9846180as olamine: 135449331drugbankdb06210 yas olamine: dbsalt000063chemspider21106301 yas olamine: 28475107uniis56d65xj9gas olamine: 4u07f515lgkeggd03978chebichebi:85010chemblchembl461101 nas olamine: chembl3989691comptox dashboard (epa)dtxsid5057753 echa infocard100.128.125 chemical and physical dataformulac25h22n4o4molar mass442.475 g·mol−13d model (jsmol)interactive image smiles cc1=nn(c2ccc(c)c(c)c2)c(=o)/c1=n\nc1cccc(-c2cccc(c(=o)o)c2)c1o inchi inchi=1s/c25h22n4o4/c1-14-10-11-19(12-15(14)2)29-24(31)22(16(3)28-29)27-26-21-9-5-8-20(23(21)30)17-6-4-7-18(13-17)25(32)33/h4-13,26,30h,1-3h3,(h,32,33)/b27-22- ykey:xdxwlkqmmkqxpv-qyqhsdtdsa-n y ny (what is this?) (verify) eltrombopag was discovered as a result of research collaboration between glaxosmithkline and ligand pharmaceuticals and is transferred to novartis pharmaceuticals. medical uses eltrombopag was initially approved by the u.s. food and drug administration (fda) on 20 november 2008, for the treatment of thrombocytopenia in people with chronic immune (idiopathic) thrombocytopenic purpura who have had an insufficient response to corticosteroids, immunoglobulin therapy, or splenectomy. on 24 august 2015, the fda approved eltrombopag (promacta for oral suspension) for the treatment of thrombocytopenia in children one year and older with idiopathic thrombocytopenia who have had an insufficient response to corticosteroids, immunoglobulins, or splenectomy. development in preclinical studies, the compound was shown to interact selectively with the thrombopoietin receptor, leading to activation of the jak-stat signaling pathway and increased proliferation and differentiation of megakaryocytes. animal studies confirmed that it increased platelet counts. in 73 healthy volunteers, higher doses of eltrombopag caused larger increases in the number of circulating platelets without tolerability problems. clinical trials eltrombopag has been shown to be effective in two major clinical syndromes: idiopathic thrombocytopenic purpura (itp) and cirrhosis due to hepatitis c (in which low platelet counts may be a contraindication for interferon treatment). after six weeks of therapy in a phase iii trial, eltrombopag 50 mg/day was associated with a significantly higher response rate than placebo in adult patients with chronic idiopathic thrombocytopenic purpura (itp). history eltrombopag received breakthrough therapy designation from the u.s. food and drug administration (fda) in february 2014, for people with aplastic anemia for which immunosuppression has not been successful. in 2017, the nih made eltrombopag a standard of care in aplastic anemia. research it has been shown to produce a trilineage hematopoiesis in some people with aplastic anemia, resulting in increased platelet counts, along with red and white blood cell counts.