Micromet and MedImmune to Present New Clinical Data for Anti-CD19 BiTE(R) Antibody at American Society of Hematology Annual Meeting Showing Objective Clinical Responses in Relapsed Non-Hodgkin's Lymphom...(rcell-destroying T- cells against tumor ...),Health

Date:11/29/2007

r cell-destroying, T- cells against tumor cells, and may represent a new therapeutic approach to cancer therapy. BiTE molecules are part of a novel class of antibody derivatives with the potential to selectively direct and activate an individual's cytotoxic T-cells, the body's most potent killer cells, to act against cancer cells. BiTE antibodies have been shown to induce an immunological synapse between a T-cell and a tumor cell in the same manner as observed during physiological T-cell attacks. These cytolytic synapses enable the delivery of cytotoxic proteins from T-cells into tumor cells, ultimately inducing a self-destruction process in the tumor cell referred to as "apoptosis," or programmed cell death. In the presence of BiTE antibodies, T-cells have been demonstrated to serially eliminate tumor cells, which explains the activity of BiTE antibodies at low concentrations and at low ratios of T-cells to target tumor cells. Through the process of killing cancer cells, T-cells proliferate, which leads to an increased number of T-cells at the site of attack.

Several antibodies in Micromet's product pipeline are BiTE antibodies and have been generated based on Micromet's proprietary BiTE product development platform. In addition to current studies of MT103, three other BiTE antibodies, targeting EpCAM (CD326), CEA and MCSP, are in pre-clinical development.

BiTE is a registered trademark of Micromet.

About MT103

MT103, which is being co-developed with MedImmune as MEDI-538, is a BiTE antibody being developed with the intent to treat certain types of B-cell lymphomas. In February 2006, the U.S. Food and Drug Administration approved an orphan drug designation for MT103 for certain indolent B-cell lymphoma, excluding chronic lymphocytic leukemia and NHL with central nervous system involvement. MT103 also received orphan drug designation from the European Agency for the Evaluation of Medicinal Products for MCL and chronic lymphocytic leukemia
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SOURCE Micromet, Inc Copyright©2007 PR Newswire. All rights reserved

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