title: Impact of initiating antiemetic prophylaxis with palonosetron versus ondansetron on risk of uncontrolled chemotherapy-induced nausea and vomiting in patients with lung cancer receiving multi-day chemotherapy.
abstract: OBJECTIVE
  The purpose of this study is to examine the risk of uncontrolled chemotherapy-induced nausea/vomiting (CINV) among lung cancer patients receiving multi-day chemotherapy and ondansetron- or palonosetron-initiated prophylactic antiemetic regimens in a community oncology setting.
  
  
  METHODS
  The Georgia Cancer Specialists electronic medical records database was used to retrospectively identify lung cancer patients who received multi-day cisplatin or carboplatin regimens with ondansetron or palonosetron on day 1 between April 1, 2006 and July 31, 2009. Uncontrolled CINV events were identified through ICD-9-CM codes (nausea/vomiting), CPT codes (dehydration), rescue medications, nausea/vomiting hospitalizations, and/or antiemetic therapy after last chemotherapy administration of the cycle. Risk for uncontrolled CINV, up to 7 days after last chemotherapy administration, was analyzed at cycle level using logistic regression with regressors of gender, age, number of chemotherapy administration days, Charlson comorbidity index, cancer type, multicancer diagnoses, and chemotherapy regimen.
  
  
  RESULTS
  A total of 209 palonosetron and 153 ondansetron patients (702 and 515 cycles, respectively) met the inclusion criteria. Palonosetron patients were significantly older (mean 67.9 versus 63.9 years; P < 0.0001), with no significant difference in gender, baseline comorbidity score, or multicancer diagnosis. Palonosetron cycles had 63% lower risk for uncontrolled CINV events versus ondansetron cycles [odds ratio (OR) 0.37; 95% confidence interval (CI) 0.25-0.54; P < 0.0001]. Sub-analysis by chemotherapy supported overall analysis (cisplatin OR 0.09; 95% CI 0.04-0.25; P < 0.0001; carboplatin OR 0.46; 95% CI 0.30-0.70; P = 0.0003).
  
  
  CONCLUSIONS
  In this retrospective analysis of lung cancer patients, multi-day chemotherapy cycles administered with palonosetron on day 1 were associated with a significantly lower risk for uncontrolled CINV events versus ondansetron-initiated chemotherapy cycles.
authors.affiliation: Georgia Cancer Specialists, Atlanta, GA, USA.
authors.forename: Bruce
authors.initials: B
authors.lastname: Feinberg
authors.forename: James
authors.initials: J
authors.lastname: Gilmore
authors.forename: Sally
authors.initials: S
authors.lastname: Haislip
authors.forename: James
authors.initials: J
authors.lastname: Jackson
authors.forename: Gagan
authors.initials: G
authors.lastname: Jain
authors.forename: Sanjeev
authors.initials: S
authors.lastname: Balu
authors.forename: Deborah
authors.initials: D
authors.lastname: Buchner
mesh_terms: D000230:Adenocarcinoma / Q000188:drug therapy; D000077192:Adenocarcinoma of Lung; D000368:Aged; D000932:Antiemetics / Q000008:administration & dosage; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects*; D016190:Carboplatin; D002945:Cisplatin / Q000008:administration & dosage; D003907:Dexamethasone / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007546:Isoquinolines / Q000008:administration & dosage*; D008175:Lung Neoplasms / Q000188:drug therapy; D008297:Male; D008875:Middle Aged; D009325:Nausea / Q000139:chemically induced* / Q000517:prevention & control*; D017294:Ondansetron / Q000008:administration & dosage*; D000077924:Palonosetron; D011812:Quinuclidines / Q000008:administration & dosage*; D012189:Retrospective Studies; D014839:Vomiting / Q000139:chemically induced* / Q000517:prevention & control*
chemical_list: D000932:Antiemetics; D007546:Isoquinolines; D011812:Quinuclidines; D017294:Ondansetron; D000077924:Palonosetron; D003907:Dexamethasone; D016190:Carboplatin; D002945:Cisplatin