title: Assessing interactions for fixed-dose drug combinations in subcutaneous tumor xenograft studies.
abstract: Drug combinations in preclinical tumor xenograft studies are often assessed using fixed doses. Assessing the joint action of drug combinations with fixed doses has not been well developed in the literature. Here, an interaction index is proposed for fixed-dose drug combinations in a subcutaneous tumor xenograft model. Furthermore, a bootstrap percentile interval of the interaction index is also developed. The joint action of two drugs can be assessed on the basis of confidence limits of the interaction index. Tumor xenograft data from actual two-drug combination studies are analyzed to illustrate the proposed method.
authors.affiliation: Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA. jianrong.wu@stjude.org
authors.forename: Jianrong
authors.initials: J
authors.lastname: Wu
mesh_terms: D000818:Animals; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage / Q000494:pharmacology*; D004353:Drug Evaluation, Preclinical / Q000379:methods; D004347:Drug Interactions; D006801:Humans; D009374:Neoplasms, Experimental / Q000188:drug therapy* / Q000473:pathology; D023041:Xenograft Model Antitumor Assays / Q000379:methods*