title: Risk factors contributing to the development of carboplatin-related delayed hypersensitivity reactions in Japanese patients with gynecologic cancers.
abstract: OBJECTIVE
  The rate of hypersensitivity reactions in patients receiving carboplatin (CBDCA) has been reported to increase after multiple doses of the agent. However, risk factors for these onsets have not been well described. In this study, we investigated the contribution of the reported risk factors to the onset of CBDCA-related delayed hypersensitivity reactions.
  
  
  METHODS
  We reviewed the records of gynecologic cancer patients receiving CBDCA of more than 7 cycles in Mie University Hospital from March 2006 to July 2009. The patients were divided into two groups on the basis of whether hypersensitivity reactions developed (13 patients) or not (43 patients). Thereafter, the potential influences of the patients' characteristics on the development of CBDCA-related delayed hypersensitivity reactions were explored using logistic regression analyses.
  
  
  RESULTS
  The median CBDCA-free interval (10 months) in patients with hypersensitivity reactions was significantly higher than that (3 months) in patients without hypersensitivity reactions. Logistic regression analyses revealed a CBDCA-free interval >13 months (odds ratio 22.2, 95% confidence interval 2.57-192, p < 0.01) and a maximum dose of CBDCA > 650 mg (odds ratio 9.52, 95% confidence interval 1.04-93.9; p < 0.05) were significantly correlated with the incidence of CBDCA-related delayed hypersensitivity reactions.
  
  
  CONCLUSIONS
  Careful attention should be paid to the onset of delayed hypersensitivity reactions for recurrent gynecologic cancer patients receiving CBDCA > 650 mg after an interval of more than 13 months from the previous CBDCA administration.
authors.affiliation: Department of Pharmacy, Mie University Hospital, Faculty of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie 514-8507, Japan.
authors.forename: Hiroko
authors.initials: H
authors.lastname: Sugimoto
authors.forename: Takuya
authors.initials: T
authors.lastname: Iwamoto
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Murashima
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Tabata
authors.forename: Norimasa
authors.initials: N
authors.lastname: Sagawa
authors.forename: Masahiro
authors.initials: M
authors.lastname: Okuda
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People; D016190:Carboplatin / Q000008:administration & dosage* / Q000009:adverse effects* / Q000627:therapeutic use; D004334:Drug Administration Schedule; D004342:Drug Hypersensitivity / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D005833:Genital Neoplasms, Female / Q000188:drug therapy*; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000139:chemically induced / Q000175:diagnosis / Q000453:epidemiology; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D016015:Logistic Models; D008875:Middle Aged; D015999:Multivariate Analysis; D012372:ROC Curve; D012307:Risk Factors
chemical_list: D016190:Carboplatin