Re Agreement

Proteome Sciences Licenses its Patented TMT® Technology to Thermo Fisher Scientific COBHAM, England (April 9, 2008) - Proteome Sciences plc has entered into an exclusive license agreement for its TMT® isobaric tandem mass tag technology with Thermo Fisher Scientific Inc (NYSE: TMO). Under the terms of the license, Proteome Sciences will manufacture its patented TMT® reagents exclusively for Thermo Fisher Scientific, which will market and sell them worldwide through the Thermo Scientific Pierce product line. Proteome Sciences expects double-digit growth in the market for isobaric tandem mass tags and will receive signature fees, contract manufacturing payments and royalties on sales with additional sales milestones from the license. Isobaric tandem mass tags are used in scientific research, diagnostics and pharmaceutical development for biomarker discovery, validation and assay development. They also represent an important step forward in analysis of proteins by mass spectrometry. The earliest TMT® patents extend to 2021, and the license agreement enables Thermo Fisher Scientific to provide third-party commercial licenses for use of any type of isobaric tandem mass tags. In addition, Proteome Sciences retains the use of TMT® for its own research as well as custom labeling and assay development for its customers using TMTcalibrator and TMT®Reference Materials under its ProteoSHOP® services division. "We are delighted to have secured the global license for the TMT® reagents and the strong patent position it has covering the field of isobaric tandem mass tagging," said Ian Jardine, vice president of global research and development for Thermo Fisher Scientific. "Researchers will continue to demand new analytical tools that push the boundaries of performance for their proteomics applications, and this agreement responds to our customers' evolving needs. We intend to have TMT® products available in the market during the second quarter of the year, fully supported by our strong sales and marketing organization." Christopher Pearce, CEO of Proteome Sciences commented, "Thermo Fisher is the ideal partner for us for our TMT® reagents. Not only do they have outstanding marketing and sales coverage in the life-sciences reagents market through its Pierce product line, but Thermo Fisher is a global leader in the development and application of mass spectrometry. This combination provides the ability to more closely link future development of TMT® technology to customer requirements and deliver new applications in combination with next-generation mass spectrometry for fast, cost-effective workflows and solutions in biomarker discovery, validation and assay development. By relying on Thermo Fisher's comprehensive sales channels for volume catalog products, Proteome Sciences can focus on custom labeling services and products. We see considerable demand for these services and anticipate that they will generate substantial and rapidly growing revenues using TMTcalibrator and TMT®Reference Materials available through our ProteoSHOP® services division. The agreement with Thermo Fisher provides Proteome Sciences with a strong cash flow, which transforms the prospects for our company with sustainable, rising revenue from all areas of our activities." Ends About Proteome Sciences: Proteome Sciences plc (LSE : PRM) is a global leader in applied proteomics, using high sensitivity proprietary techniques to detect and characterise differentially expressed proteins in diseases for diagnostic, prognostic and therapeutic applications. ProteoSHOP® provides integrated proteomic services for biomarker discovery, validation and measurement in clinical trials and in vitro diagnostics. Key features include the proprietary isobaric tandem mass tag technology TMT® for accurate and reliable biomarker quantification and the ability to rapidly develop highly reproducible quantitative biomarker assays. The main focus of its research addresses neurological, oncology and cardiovascular conditions and has discovered blood biomarkers in stroke, brain damage, solid organ transplant rejection and Alzheimer's disease. Proteome Sciences is based in Cobham, UK with facilities in London and Frankfurt. Contact Proteome Sciences plc at www.proteomics.com Christopher Pearce, Chief Executive Officer James Malthouse, Finance Director Dr. Ian Pike, Chief Business Officer Tel: +44 (0)1932 865065 Adrian Shaw, IKON Associates Tel: +44 (0)1483 535102 / +44 (0)797 9900733 Matt Baldwin, COAST Communications Tel: +44 (0)1233 503200 Nominated Adviser Landsbanki Securities (UK) Ltd. Gareth Price / Thilo Hoffman Tel: +44 (0)20 7426 9000 About Thermo Fisher Scientific: Thermo Fisher Scientific Inc. (NYSE: TMO) is the world leader in serving science, enabling our customers to make the world healthier, cleaner and safer. With annual revenues of $10 billion, we have more than 30,000 employees and serve over 350,000 customers within pharmaceutical and biotech companies, hospitals and clinical diagnostic labs, universities, research institutions and government agencies, as well as environmental and industrial process control settings. Serving customers through two premier brands, Thermo Scientific and Fisher Scientific, we help solve analytical challenges from routine testing to complex research and discovery. Thermo Scientific offers customers a complete range of high-end analytical instruments as well as laboratory equipment, software, services, consumables and reagents to enable integrated laboratory workflow solutions. Fisher Scientific provides a complete portfolio of laboratory equipment, chemicals, supplies and services used in healthcare, scientific research, safety and education. Together, we offer the most convenient purchasing options to customers and continuously advance our technologies to accelerate the pace of scientific discovery, enhance value for customers and fuel growth for shareholders and employees alike. Visit www.thermofisher.com. Notes to editors: What is Isobaric Tandem Mass Tagging (TMT®)? "Tracker" system for proteins Healthy and diseased samples are individually tagged and can then be monitored simultaneously. Differences in TMT® signals show changes in proteins between samples. What is a Biomarker? A measurable change in amount of a protein in a sample that correlates with disease, progression of disease or in response to treatment Why are Biomarkers important? Validated biomarkers are used to diagnose disease, monitor disease progression and to tailor treatments for disease. Advantages of TMT® isobaric tandem mass tags: Highest accuracy biomarker quantitation Detection and assay of biomarkers not possible by standard methods, e.g. immunoassay Fastest and most efficient biomarker assay development - weeks rather than years Single platform from biomarker discovery through validation to clinical application Fast, flexible and cost-effective workflows
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