The Connectivity Map: Using Gene-Expression Signatures to Connect Small Molecules, Genes, and Disease Justin Lamb1,*, Emily D. Crawford1,†, David Peck1, Joshua W. Modell1, Irene C. Blat1, Matthew J. Wrobel1, Jim Lerner1, Jean-Philippe Brunet1, Aravind Subramanian1, Kenneth N. Ross1, Michael Reich1, Haley Hieronymus1,2, Guo Wei1,2, Scott A. Armstrong2,3, Stephen J. Haggarty1,4, Paul A. Clemons1, Ru