Dexrazoxane hydrochloride, sold under the brand name Zinecard among others, is a cardioprotective agent. It was discovered in 1972. The IV administration of dexrazoxane is in acidic condition with HCl adjusting the pH.[2]
Medical uses
Dexrazoxane has been used to protect the heart against the cardiotoxic side effects of chemotherapeutic drugs such as anthracyclines,[3] such as daunorubicin or doxorubicin or other chemotherapeutic agents.[4] However, in July 2011 the European Medicines Agency (EMA) released a statement restricting use only in adult patients with cancer who have received > 300 mg/m2doxorubicin or > 540 mg/m2epirubicin and general approval for use for cardioprotection.[5][6] That showed a possibly higher rate of secondary malignancies and acute myelogenous leukemia in pediatric patients treated for different cancers with both dexrazoxane and other chemotherapeutic agents that are associated with secondary malignancies.[7] On 19 July 2017, based on evaluation of the currently available data the European Commission issued an EU-wide legally binding decision to implement the recommendations of the Committee for Medicinal Products for Human Use (CHMP) on dexrazoxane and lifted its 2011-contraindication for primary prevention of anthracycline-induced cardiotoxicity with dexrazoxane in children and adolescents where high doses (≥ 300 mg/m3) of anthracyclines are anticipated.
Dexrazoxane was designated by the US FDA as an orphan drug for "prevention of cardiomyopathy for children and adults 0 through 16 years of age treated with anthracyclines".[8] This decision allows virtually all children to receive dexrazoxane starting with the first dose of anthracycline at the discretion of the treating provider. The label change by the agency announcing dexrazoxane as an approved cardio-oncology protectant has been followed by a review by the agency.[9] Currently, the only FDA and EMA approved cardioprotective treatment for anthracycline cardioprotection is dexrazoxane, which provides effective primary cardioprotection against anthracycline-induced cardiotoxicity without reducing anthracycline activity and without enhancing secondary malignancies.[10]
As a derivative of EDTA, dexrazoxane chelatesiron and thus reduces the number of metal ions complexed with anthracycline and, consequently, decrease the formation of superoxide radicals.[13] The exact chelation mechanism is unknown, but it has been postulated that dexrazoxane can be converted into ring-opened form intracellularly and interfere with iron-mediated free radical generation that is in part thought to be responsible for anthracycline induced cardiomyopathy.[14] It was speculated that dexrazoxane could be used for further investigation to synthesize new antimalarial drugs.[15]
References
^"Savene EPAR". European Medicines Agency (EMA). 19 September 2001. Retrieved 7 September 2024.
^Bjelogrlic SK, Radic J, Radulovic S, Jokanovic M, Jovic V (December 2007). "Effects of dexrazoxane and amifostine on evolution of Doxorubicin cardiomyopathy in vivo". Experimental Biology and Medicine. 232 (11): 1414–24. doi:10.3181/0705-RM-138. PMID18040065. S2CID20119026.
^Kane RC, McGuinn WD, Dagher R, Justice R, Pazdur R (April 2008). "Dexrazoxane (Totect): FDA review and approval for the treatment of accidental extravasation following intravenous anthracycline chemotherapy". The Oncologist. 13 (4): 445–50. doi:10.1634/theoncologist.2007-0247. PMID18448560. S2CID7753443.
^Jones RL (November 2008). "Utility of dexrazoxane for the reduction of anthracycline-induced cardiotoxicity". Expert Review of Cardiovascular Therapy. 6 (10): 1311–7. doi:10.1586/14779072.6.10.1311. PMID19018683. S2CID25950994.
^Loyevsky M, Sacci JB, Boehme P, Weglicki W, John C, Gordeuk VR (February 1999). "Plasmodium falciparum and Plasmodium yoelii: effect of the iron chelation prodrug dexrazoxane on in vitro cultures". Experimental Parasitology. 91 (2): 105–14. doi:10.1006/expr.1998.4371. PMID9990337.