L04AX04 - Lenalidomide |
Propably not porphyrinogenic |
PNP |
Important Information
Patients on immunosuppressive therapy have an increased risk of infections. Since infections have a potential to trigger acute porphyric attacks vigilance is motivated regarding signs or symptoms of infection and/or possible symptoms of a porphyric attack. Side effects like nausea and vomiting may potentially be porphyrinogenic through reduction in carbohydrate intake.
Side effects
Infections are common in patients using immunosuppressants and since infections might trigger an acute porphyric attack, vigilance regarding signs and symptoms of an infection and/ or a porphyric attack is recommended. Common adverse reactions of lenalidomide that can be confused with an acute porphyric attack are nausea and vomiting. These side effects may potentially be porphyrinogenic if leading to a decrease in carbohydrate intake.
Rationale
Lenalidomide is not metabolised by CYP, and has no capacity for induction or inhibition of CYP.
Chemical description
Lenalidomide is a synthetic derivative of glutamic acid. It is structurally close to thalidomide but one oxygen is removed from the phthalyl ring and one amine group is added.
Therapeutic characteristics
Lenalidomide in combination with corticosteroids is used in the treatment of multiple myeloma.
It is administered orally.
Metabolism and pharmacokinetics
Lenalidomide is eliminated mainly via the kidneys as unchanged drug.
In vitro studies conclude that lenalidomide is not a substrate, inhibitor nor an inducer of cytochrome P450 enzymes (Kumar 2008).
IPNet drug reports
Uneventful use reported in 1 patient with acute porphyria.
References
- Scientific articles
- Kumar G, Lau H et al, Lenalidomide: in vitro evaluation of the metabolism and assessment of cytochrome P450 inhibition and induction. Cancer Chemother Pharmacol. 2009 May;63(6):1171-5. #2357
- Drug reference publications
- Sweetman SC, editor. Martindale: The complete drug reference. Lenalidomide. Pharmaceutical Press 2009. #2358
- Government bodies
- European Public Assessment Report, Revlimid (Scientific discussion).European Medicines Agency (EMEA). Accessible from: emea.europa.eu #2356
- Summary of Product Characteristics
- The electronic Medicines Compendium (emc). Summary of Product Characteristics (SPC). Revlimid. #2359
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