T3D3533

3575 T3D3533

Sorafenib

Sorafenib (rINN), marketed as Nexavar by Bayer, is a drug approved for the treatment of advanced renal cell carcinoma (primary kidney cancer). It has also received 'Fast Track' designation by the FDA for the treatment of advanced hepatocellular carcinoma (primary liver cancer), and has since performed well in Phase III trials. Sorafenib is a small molecular inhibitor of Raf kinase, PDGF (platelet-derived growth factor), VEGF receptor 2 & 3 kinases and c Kit the receptor for Stem cell factor. A growing number of drugs target most of these pathways. The originality of Sorafenib lays in its simultaneous targeting of the Raf/Mek/Erk pathway. 284461-73-0

216239

C21H16ClF3N4O3

464.086300 White powder.

Insoluble

The mean relative bioavailability is 38-49% for the tablet form, when compared to an oral solution. Sorafenib reached peak plasma levels in 3 hours following oral administration. With a high-fat meal, bioavailability is reduced by 29% compared to administration in the fasted state.

Sorafenib interacts with multiple intracellular (CRAF, BRAF and mutant BRAF) and cell surface kinases (KIT, FLT-3, VEGFR-2, VEGFR-3, and PDGFR-ß). Several of these kinases are thought to be involved in angiogenesis, thus sorafenib reduces blood flow to the tumor. Sorafenib is unique in targeting the Raf/Mek/Erk pathway. By inhibiting these kinases, genetic transcription involving cell proliferation and angiogenesis is inhibited.

Sorafenib is metabolized primarily in the liver, undergoing oxidative metabolism, mediated by CYP3A4, as well as glucuronidation mediated by UGT1A9. Sorafenib accounts for approximately 70-85% of the circulating analytes in plasma at steady- state. Eight metabolites of sorafenib have been identified, of which five have been detected in plasma. The main circulating metabolite of sorafenib in plasma, the pyridine N-oxide, shows in vitro potency similar to that of sorafenib. This metabolite comprises approximately 9-16% of circulating analytes at steady-state. Route of Elimination: Following oral administration of a 100 mg dose of a solution formulation of sorafenib, 96% of the dose was recovered within 14 days, with 77% of the dose excreted in feces, and 19% of the dose excreted in urine as glucuronidated metabolites. Half Life: 25-48 hours No indication of carcinogenicity to humans (not listed by IARC).

Sorafenib is indicated for the treatment of unresectable hepatocellular carcinoma and advanced renal cell carcinoma.

Hand-foot skin reaction and rash represent the most common adverse reactions; may increase the risk of bleeding (L1712)

The highest dose of sorafenib studied clinically is 800 mg twice daily. The adverse reactions observed at this dose were primarily diarrhea and dermatologic events. No information is available on symptoms of acute overdose in animals because of the saturation of absorption in oral acute toxicity studies conducted in animals. There is no specific treatment for NEXAVAR (Sorafenib ) overdose. (L1712)

2009-07-30T17:59:09Z

2014-12-24T20:26:08Z

Sorafenib

50924

Sorafenib

DB00398

BAX

true

CNC(=O)C1=NC=CC(OC2=CC=C(NC(O)=NC3=CC(=C(Cl)C=C3)C(F)(F)F)C=C2)=C1

C21H16ClF3N4O3

InChI=1S/C21H16ClF3N4O3/c1-26-19(30)18-11-15(8-9-27-18)32-14-5-2-12(3-6-14)28-20(31)29-13-4-7-17(22)16(10-13)21(23,24)25/h2-11H,1H3,(H,26,30)(H2,28,29,31)

InChIKey=MLDQJTXFUGDVEO-UHFFFAOYSA-N

464.825

464.08630272

Exogenous Solid 3.8

HMDB14542

CHEMBL1336

187440

Ales Gavenda, Alexandr Jegorov, Pierluigi Rossetto, Peter Lindsay MacDonald, Augusto Canavesi, “POLYMORPHS OF SORAFENIB TOSYLATE AND SORAFENIB HEMI-TOSYLATE, AND PROCESSES FOR PREPARATION THEREOF.” U.S. Patent US20090192200, issued July 30, 2009.