News Pressroom

October 25, 2001

MedImmune Licenses Cancer Target from Purdue Research Foundation
Company Focused on Building Oncology Franchise -


GAITHERSBURG, Md., Oct. 25 -- MedImmune, Inc. (Nasdaq:MEDI) today announced that it has licensed worldwide rights to EphA2 technology from Purdue Research Foundation. MedImmune will be responsible for developing, manufacturing and commercializing therapeutics that target EphA2. These products will potentially be used to treat a variety of aggressive tumors, including breast, colon, prostate, lung and skin cancers, as well as to prevent metastasis. As a part of the agreement, Purdue will receive certain upfront payments and future milestones and royalties.

``We are very excited to add such a promising oncology program to our research pipeline,'' said Peter Kiener, D.Phil., MedImmune's vice president, research. ``Data published recently in Cancer Research indicate that antibodies designed to interact with EphA2 could be used to both regulate tumor cell growth and prevent metastasis, whilst sparing normal cells.''

EphA2 is a tumor-causing protein when over expressed. Preliminary studies indicate that it is the over expression of EphA2 that subverts normal regulation of cell growth, which then leads to tumor cell growth and metastases. Further, these studies show that the introduction of an antibody targeting EphA2 may allow the restoration of this cell growth regulation or induce cell killing.

David Mott, MedImmune's chief executive officer commented: ``We are continuing to build our oncology business and believe EphA2 fits nicely with our strengths in antibody development and manufacturing, as well as having the longer term potential to leverage our recently expanded oncology sales organization. In addition to the EphA2 research program, MedImmune is in clinical trials with an anti-angiogenic antibody, Vitaxin(TM), and with a vaccine to prevent cervical cancer. MedImmune sells its first cancer product, Ethyol® (amifostine), through its own 60-person oncology sales force.''

Vitaxin is an antibody that has the potential to inhibit the growth of new blood vessels (angiogenesis) by binding to a specific integrin (alpha-v-beta-3) expressed on a variety of cells that play a critical role in inflammatory diseases such as rheumatoid arthritis and restenosis, as well as cancer. Earlier this year, MedImmune initiated two studies with Vitaxin in cancer patients. In March, the company began a Phase I pharmacokinetic study with Vitaxin in patients with refractory solid tumors. In July, the company began a Phase I/II study in patients with advanced colorectal cancer. MedImmune licensed Vitaxin from Applied Molecular Evolution, Inc. (AME) in February 1999. During 2000, the two companies worked together to prepare a more potent version of the original Vitaxin molecule using AME's proprietary technology.

In 1995, MedImmune began developing a virus-like particle based vaccine to prevent disease caused by human papillomavirus (HPV). HPV has been shown to cause cervical cancer, the second leading cause of cancer death among women worldwide. MedImmune's multi-valent vaccine targets the HPV types believed to cause a majority of cervical cancers. The vaccine, now in Phase II clinical development, is being co-developed with SB Biologicals, a division of GlaxoSmithKline.

Ethyol is a unique product that has the potential to address substantial markets in oncology. It is used to reduce unwanted toxicities caused by certain anti-cancer treatments. Currently, Ethyol is approved as a chemoprotective agent to reduce the cumulative kidney toxicities associated with repeated administration of cisplatin in patients with advanced ovarian cancer and non-small cell lung cancer. It has also been approved for use in head and neck cancer patients undergoing radiation therapy. In this patient population, Ethyol has been demonstrated to limit the degree of xerostomia (dry mouth), an often severe and irreversible side effect of radiation therapy caused by damage to the salivary glands. MedImmune has also dedicated additional research and clinical resources to evaluate new opportunities for the product, including subcutaneous administration and the reduction of mucositis in lung cancer patients.

MedImmune, Inc. is a fully integrated biotechnology company focused on developing and marketing products that address medical needs in areas such as infectious disease, immune regulation and cancer. Headquartered in Gaithersburg, Maryland, MedImmune has manufacturing facilities in Frederick, Maryland and Nijmegen, the Netherlands. For more information on MedImmune, visit the company's website at http://www.medimmune.com .

DISCLOSURE NOTICE: The information contained in this document is as of October 25, 2001, and will not be updated as a result of new information or future events. This document contains forward-looking statements regarding MedImmune's future financial performance and/or business prospects. Those statements involve substantial risks and uncertainties. You can identify those statements by the fact that they contain words such as ``anticipate,'' ``believe,'' ``estimate,'' ``expect,'' ``intend,'' ``project'' or other terms of similar meaning. Those statements reflect management's current beliefs and are based on numerous assumptions which MedImmune cannot control and which may not develop as MedImmune expects. Consequently, actual results may differ materially from those projected in the forward-looking statements. Among the factors that could cause actual results to differ materially are: seasonal demand for and continued supply of our principal product, Synagis® (palivizumab); availability of competitive products in the market; availability of third-party reimbursement for the cost of our products; effectiveness and safety of our products; exposure to product liability and other types of lawsuits; foreign currency exchange rate fluctuations; changes in generally accepted accounting principles; growth in costs and expenses; the impact of acquisitions, divestitures and other unusual items; and the risks, uncertainties and other matters discussed in MedImmune's Annual Report on Form 10-K for the year ended December 31, 2000 and in its periodic reports on Forms 10-Q and 8-K (if any) filed with the U.S. Securities and Exchange Commission. MedImmune is developing several products for potential future marketing. There can be no assurance that such development efforts will succeed, that such products will receive required regulatory clearance or that, even if such regulatory clearance were received, such products would ultimately achieve commercial success.