Rasburicase
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| Clinical data | |
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| AHFS/Drugs.com | Monograph |
| Routes of administration |
Intravenous |
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| Pharmacokinetic data | |
| Bioavailability | N/A |
| Biological half-life | 18 hrs |
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| ChEMBL | |
| ECHA InfoCard | 100.207.686 |
| Chemical and physical data | |
| Formula | C1521H2381N417O461S7 |
| Molar mass | 34109.5 |
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Rasburicase (trade names Elitek in the US and Fasturtec in Europe) is a medication that helps to clear uric acid from the blood. It is a recombinant version of urate oxidase, an enzyme that metabolizes uric acid to allantoin. Urate oxidase is known to be present in many mammals but does not naturally occur in humans. Rasburicase is produced by a genetically modified Saccharomyces cerevisiae strain. The cDNA coding for rasburicase was cloned from a strain of Aspergillus flavus.
Rasburicase is a tetrameric protein with identical subunits. Each subunit is made up of a single 301 amino acid polypeptide chain with a molecular mass of about 34 kDa. The drug product is a sterile, white to off-white, lyophilized powder intended for intravenous administration following reconstitution with a diluent. Elitek (rasburicase) is supplied in 3 mL and 10 mL colorless, glass vials containing rasburicase at a concentration of 1.5 mg/mL after reconstitution.
Rasburicase is approved for use by the U.S. Food and Drug Administration (and European counterparts) for the prevention and treatment of tumor lysis syndrome (TLS) in people receiving chemotherapy for hematologic cancers such as leukemias and lymphomas. It; however, is not clear if it results in important benefits such as decreased kidney problems or decreased risk of death as of 2014.
Rasburicase is much more expensive than conventional therapy.
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Wikipedia