Pegaspargase (Oncaspar)

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General information

Class/mechanism: Depletes plasma asparagine, selectively killing leukemic cells which are unable to synthesize asparagine due to a lack of asparagine synthetase. The Oncaspar formulation involves L-asparaginase (L-asparagine amidohydrolase) being covalently conjugated to monomethoxypolyethylene glycol (mPEG), increasing its half-life and reducing the risk of hypersensitivity reactions in patients who have history of hypersensitivity to Asparaginase (Elspar).[1][2]
Route: IV, IM
Extravasation: neutral

For conciseness and simplicity, currently will focus on treatment regimens and not list information such as: renal/hepatic dose adjustments, metabolism (including CYP450), excretion, monitoring parameters (although this will be considered for checklists), or manufacturer. Instead, for the most current information, please refer to your preferred pharmacopeias such as Micromedex, Lexicomp, UpToDate (courtesy of Lexicomp), or the prescribing information.[1]

Diseases for which it is used

Patient drug information

History of changes in FDA indication

  • 1994-02-01: Initial FDA approval for treatment of acute lymphocytic leukemia (ALL) in patients who require L-asparaginase in their treatment regimen but have developed hypersensitivity to the native forms of L-asparaginase. (Based on CCG 1962)
  • 2006-07-24: FDA approved for the first-line treatment of patients with acute lymphoblastic leukemia. (Based on CCG 1962)

History of changes in EMA indication

  • 2016-01-14: Initial authorization

History of changes in PMDA indication

Also known as

  • Generic names: PEG-L-asparaginase, peg-asparginase, pegasparaginase
  • Brand name: Oncaspar