TY - JOUR A1 - Aylor, David L. A1 - Valdar, William A1 - Foulds-Mathes, Wendy A1 - Buus, Ryan J. A1 - Verdugo, Ricardo A. A1 - Baric, Ralph S. A1 - Ferris, Martin T. A1 - Frelinger, Jeff A. A1 - Heise, Mark A1 - Frieman, Matt B. A1 - Gralinski, Lisa E. A1 - Bell, Timothy A. A1 - Didion, John D. A1 - Hua, Kunjie A1 - Nehrenberg, Derrick L. A1 - Powell, Christine L. A1 - Steigerwalt, Jill A1 - Xie, Yuying A1 - Kelada, Samir N.P. A1 - Collins, Francis S. A1 - Yang, Ivana V. A1 - Schwartz, David A. A1 - Branstetter, Lisa A. A1 - Chesler, Elissa J. A1 - Miller, Darla R. A1 - Spence, Jason A1 - Liu, Eric Yi A1 - McMillan, Leonard A1 - Sarkar, Abhishek A1 - Wang, Jeremy A1 - Wang, Wei A1 - Zhang, Qi A1 - Broman, Karl W. A1 - Korstanje, Ron A1 - Durrant, Caroline A1 - Mott, Richard A1 - Iraqi, Fuad A. A1 - Pomp, Daniel A1 - Threadgill, David A1 - Pardo-Manuel de Villena, Fernando A1 - Churchill, Gary A. T1 - Genetic analysis of complex traits in the emerging Collaborative Cross Y1 - 2011/08/01 JF - Genome Research JO - Genome Research SP - 1213 EP - 1222 DO - 10.1101/gr.111310.110 VL - 21 IS - 8 UR - http://genome.cshlp.org/content/21/8/1213.abstract N2 - The Collaborative Cross (CC) is a mouse recombinant inbred strain panel that is being developed as a resource for mammalian systems genetics. Here we describe an experiment that uses partially inbred CC lines to evaluate the genetic properties and utility of this emerging resource. Genome-wide analysis of the incipient strains reveals high genetic diversity, balanced allele frequencies, and dense, evenly distributed recombination sites—all ideal qualities for a systems genetics resource. We map discrete, complex, and biomolecular traits and contrast two quantitative trait locus (QTL) mapping approaches. Analysis based on inferred haplotypes improves power, reduces false discovery, and provides information to identify and prioritize candidate genes that is unique to multifounder crosses like the CC. The number of expression QTLs discovered here exceeds all previous efforts at eQTL mapping in mice, and we map local eQTL at 1-Mb resolution. We demonstrate that the genetic diversity of the CC, which derives from random mixing of eight founder strains, results in high phenotypic diversity and enhances our ability to map causative loci underlying complex disease-related traits. ER -