title: Interval approach to assessing antitumor activity for tumor xenograft studies.
abstract: In preclinical cancer drug screening tumor xenograft experiments, the tumor growth inhibition ratio (T/C) is commonly used to assess the antitumor activity of the agents. Unfortunately, this measurement can discard useful data and result in a high false-negative rate. Furthermore, the degree of antitumor activity based on the T/C ratio is assessed on the basis of an arbitrary cutoff point that does not reflect variations in different tumor lines. To overcome these drawbacks, we propose an adjusted area-under-the-curve (aAUC) ratio to quantify tumor growth inhibition. A nonparametric bootstrap t-interval of the aAUC ratio is also proposed for assessing the significance of the antitumor activity of the agents. The proposed method is then applied to a real tumor xenograft study.
authors.affiliation: Department of Biostatistics, St Jude Children's Research Hospital, Memphis, TN 38105-3678, USA. jianrong.wu@stjude.org
authors.forename: Jianrong
authors.initials: J
authors.lastname: Wu
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Houghton
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000627:therapeutic use; D019540:Area Under Curve; D045744:Cell Line, Tumor; D016001:Confidence Intervals; D006801:Humans; D051379:Mice; D023041:Xenograft Model Antitumor Assays / Q000379:methods* / Q000706:statistics & numerical data*
chemical_list: D000970:Antineoplastic Agents