To: tuck who wrote (264 ) 2/6/2007 11:26:10 AM From: Mike McFarland Read Replies (1) | Respond to of 360 The CALP S-4/A of 6/29/2006 is brutally long, I'll only paste that part of the Xenogen competition that applies to glgc here: In silico analysis. In addition to companies that perform in vivo animal analysis, Xenogen also competes with companies that conduct in vitro analysis, including Predix Pharmaceuticals, formerly Physiome Sciences, Scimagix, Gene Logic Inc. and Entelos. Each of these companies offers in silico , or in computer, technology that enables large-scale computer models of human disease. While in silico technologies have helped accelerate the drug discovery process, these technologies generally assess only one biological parameter and, consequently, they are not representative of the complex biological systems present in humans. As a result, the information generated has limited predictive value. Although Xenogen believes that its integrated system of instruments and equipment, software and reagents improve the productivity and efficiency of drug discovery and development, the up-front costs and licensing fees associated with its products make their use generally more expensive than conventional technologies for in vivo testing. Phenotyping. Although many pharmaceutical companies perform these efforts internally, there are a small number of companies that offer phenotypic analysis of animal models on a fee-for-service basis, including Jackson Laboratories, MDS, Inc., PsychoGenics, Inc., Charles River Laboratories, and RIKEN Yokahama Institute-Genomic Sciences Center. However, Xenogen believes that Xenogen Biosciences offers greater breadth and scope of pharmacologically-validated bioassays and challenge assays. Additionally, Xenogen believes that the proprietary nature of Xenogen Biosciences' phenotyping program services presents customers with services that use fewer mice, and therefore are more cost-efficient, than those offered by competitors or those available to large pharmaceutical companies from in-house staffs. In vivo compound profiling analysis. In addition to those competitors that conduct therapeutically-focused or comprehensive phenotypic analysis of genetically-modified animal models, there are other companies that have developed scientific platforms for the in vivo characterization of lead compounds, drug development candidates and/or clinical development candidates. This chemical characterization platform is known by various designations, but primarily as compound/drug repositioning, repurposing and/or indications discovery. Competitors in the in vivo chemical characterization space consist of those that focus primarily in one or a few therapeutic areas, such as Sention, Inc., Vela Pharmaceuticals, Inc., Bionaut Pharmaceuticals Inc., ChemGenex Therapeutics Inc., and CombinatoRx Inc., and those that have designed and validated comprehensive programs, such as Gene Logic Inc., Vanda Pharmaceuticals and Melior Discovery, Inc.