Product Information
Registration Status: ActiveSIN13339P
NEXAVAR TABLET 200mg is approved to be sold in Singapore with effective from 2007-08-24. It is marketed by BAYER (SOUTH EAST ASIA) PTE LTD, with the registration number of SIN13339P.
This product contains Sorafenib 200mg in the form of TABLET, FILM-COATED. It is approved for ORAL use.
This product is manufactured by BAYER AG in ITALY, andBAYER HEALTHCARE MANUFACTURING S.R.L. in GERMANY.
It is a Prescription Only Medicine that can only be obtained from a doctor or a dentist, or a pharmacist with a prescription from a Singapore-registered doctor or dentist.
Product Reference
Important Note: For generic product, the SPC/PIL provided may not be brand specific.
{{/items}} {{^items}}Description
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.
Indication
Sorafenib is indicated for the treatment of unresectable hepatocellular carcinoma and advanced renal cell carcinoma.
Mechanism of Action
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.
Pharmacokinetics
- Absorption
- 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.
- Distribution
- Metabolism
- 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.
- Elimination
Toxicity
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.
Active Ingredient/Synonyms
4-(4-((((4-Chloro-3-(trifluoromethyl)phenyl)amino)carbonyl)amino)phenoxy)-N-methyl-2-pyridinecarboxamide | N-(4-Chloro-3-(trifluoromethyl)phenyl)-n'-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)urea | Sorafenibum | Sorafenib |
Source of information: Drugbank (External Link). Last updated on: 3rd July 18. *Trade Name used in the content below may not be the same as the HSA-registered product.