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First-dose Carboplatin Reaction — SCE Medical Oncology MCQ

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HardGynaecological CancersFirst-dose Carboplatin ReactionSCE Medical Oncology

A 58-year-old woman with advanced ovarian cancer has just had her first dose of carboplatin. She develops severe rigors 20 minutes into the infusion, BP drops to 80/50, and she develops widespread urticaria. This is her first ever exposure to carboplatin. Is this typical of carboplatin hypersensitivity?

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Correct answer: E — No — this is more consistent with an infusion reaction or anaphylaxis to a different cause; typical carboplatin hypersensitivity requires prior sensitisation (≥6 exposures); first-dose severe reactions should prompt investigation of other causes (diluent allergy, pre-medications, concurrent drugs)

Carboplatin hypersensitivity typically requires prior sensitisation (≥6 exposures). First-dose severe reactions are atypical and should prompt investigation of alternative causes: diluent/excipient allergy, concurrent medication reaction, or pre-existing sensitisation from environmental platinum exposure. True first-dose carboplatin anaphylaxis is rare.

Reference: ESMO 2024 Ovarian; Lee et al Gynecol Oncol 2005