BETHESDA, Md., April 23 /PRNewswire-FirstCall/ -- Micromet, Inc. (Nasdaq: MITI), a biopharmaceutical company developing novel, proprietary antibodies for the treatment of cancer, inflammation and autoimmune diseases, announced the start of a phase 1 clinical trial with its BiTE(R) antibody MT110. The study will explore the safety, pharmacokinetics, pharmacodynamics and anti-tumor activity of MT110 in patients with lung and gastrointestinal cancers.
MT110 targets the epithelial cell adhesion molecule (EpCAM or CD326), which is highly expressed on colon, lung, breast, prostate, ovarian, gastric and pancreas cancers. Additionally, EpCAM has been found on cancer stem cells of colon, breast, prostate and pancreas cancers. Cancer stem cells are believed to cause metastases and recurrence of these cancers. MT110 is the second BiTE antibody in clinical trials, and the fourth clinical program in Micromet's product pipeline. The first BiTE antibody, MT103 (MEDI-538), is now in phase 1 and phase 2 clinical trials for the treatment of haematological cancers.
"BiTE antibodies enable the patients' own T cells to very efficiently eliminate tumor cells," comments Patrick Baeuerle, Chief Scientific Officer of Micromet, "In various experimental tumor models, we have demonstrated the high therapeutic potential of EpCAM-specific BiTE antibodies, and we are now looking forward to determining the safety and the therapeutic potential of MT110 in patients."
"Having obtained clinical proof of concept for our BiTE antibody technology with MT103 in haematological cancers, we are excited about exploring the potential of MT110 in treating solid tumors," comments Carsten Reinhardt, Chief Medical Officer of Micromet. "Based on its unique mode of action, MT110 may be suited to treat established tumors as well as disseminated cancer cells, which frequently give rise to metastases."
About BiTE Antibodies
BiTE(R) antibodies are designed to direct the body's cytotoxic, or cell-destroying, T cells against tumor cells, and represent a new therapeutic approach to cancer therapy. 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 very low concentrations and at very low ratios of T cells to target 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 antibody platform. The most advanced BiTE antibody is MT103 (MEDI-538), targeting CD19, and has provided proof-of-concept in an ongoing phase 1 clinical study in patients with advanced non-Hodgkin's lymphoma. MT110, which is targeting EpCAM (CD326) and is the first BiTE antibody with potential applications in the treatment of solid tumors, is in a phase 1 clinical trial in patients with lung and gastrointestinal cancers. Two additional BiTE antibodies, targeting CD33 and MCSP, are in preclinical development.
About Micromet, Inc. (http://www.micromet-inc.com)
Micromet, Inc. is a biopharmaceutical company developing novel, proprietary antibodies for the treatment of cancer, inflammation and autoimmune diseases. Four of its antibodies are currently in clinical trials, while the remainder of the product pipeline is in preclinical development. The BiTE(R) antibody MT103 is in a phase 2 clinical trial for the treatment of patients with acute lymphoblastic leukemia and in a phase 1 clinical trial for the treatment of patients with non-Hodgkin's lymphoma. BiTE antibodies represent a new class of antibodies that activate a patient's own cytotoxic T cells, considered the most powerful "killer cells" of the human immune system, to eliminate cancer cells. Micromet is developing MT103 in collaboration with MedImmune, Inc., a subsidiary of AstraZeneca plc. MT110 is the second BiTE antibody in clinical trials, and is being developed by Micromet in a phase 1 clinical trial for the treatment of patients with lung and gastrointestinal cancer. The third clinical stage antibody is adecatumumab, also known as MT201, a human monoclonal antibody which targets epithelial cell adhesion molecule (EpCAM)-expressing solid tumors. Micromet is developing adecatumumab in collaboration with Merck Serono in a phase 1b clinical trial evaluating adecatumumab in combination with docetaxel for the treatment of patients with metastatic breast cancer. The fourth clinical stage antibody is MT293 which is licensed to TRACON Pharmaceuticals, Inc. and is being developed in a phase 1 clinical trial for the treatment of patients with cancer. In addition, Micromet has established a collaboration with Nycomed for the development and commercialization of MT203, a human antibody neutralizing the activity of granulocyte/macrophage colony stimulating factor (GM-CSF), which has potential applications in the treatment of various inflammatory and autoimmune diseases, such as rheumatoid arthritis, psoriasis, or multiple sclerosis.
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|SOURCE Micromet, Inc.|
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