Carboplatin hypersensitivity reactions: a single institution experience

Carboplatin-related hypersensitivity reactions, frequently encountered in the heavily pretreated subpopulation of patients with gynecologic malignancies, can be severe and even potentially lethal-precluding these patients from an effective salvage treatment. We describe our experience in the management of such reactions and the application of a pretreatment protocol with corticosteroids, antihistamines and a slow infusion rate in order to safely re-administer carboplatin to the above patients. From 1998 to 2004, twenty patients developed an allergic reaction to carboplatin. Sixteen of them (80%) suffered from ovarian cancer. Upon resolution of the acute reaction, thirteen patients were pretreated according to our protocol and were re-exposed to carboplatin. Fifteen patients experienced the reaction during second-line carboplatin-based treatment and 5 patients after 3 or more regimens. Fifteen of the reactions (75%) were severe. Thirteen patients were re-treated with carboplatin after the application of our protocol, all of them successfully, even though 10 patients (77%) experienced minor symptoms during subsequent courses. On the contrary, only one of the 6 patients who were re-treated without the application of the protocol was able to receive further platinum-based treatment. In conclusion, pretreatment with corticosteroids, antihistamines and a slower infusion rate may make re-treatment possible in patients having experienced hypersensitivity to carboplatin.