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Results from this study will be submitted for presentation at an upcoming medical conference.

Merck KGaA, Darmstadt, Germany, is ImClone Systems' ERBITUX partner outside of North America.

About Lung Cancer

The American Cancer Society estimates that in the U.S., more than 213,000 people will be diagnosed with lung cancer in 2007. Lung cancer is the leading cause of cancer-related death in men and women in the U.S., with 160,000 deaths estimated in 2007. Approximately 80 to 85% of these patients will be diagnosed with non-small cell lung cancer, with the majority being diagnosed with locally advanced or metastatic disease.

About ERBITUX(R) (Cetuximab)

ERBITUX is a monoclonal antibody (IgG1 Mab) designed to inhibit the function of a molecular structure expressed on the surface of normal and tumor cells called the epidermal growth factor receptor (EGFR, HER1, c-ErbB-1). In vitro assays and in vivo animal studies have shown that binding of ERBITUX to the EGFR blocks phosphorylation and activation of receptor-associated kinases, resulting in inhibition of cell growth, induction of apoptosis, and decreased matrix metalloproteinase and vascular endothelial growth factor production. In vitro, ERBITUX can mediate antibody-dependent cellular cytotoxicity (ADCC) against certain human tumor types. While the mechanism of ERBITUX's anti-tumor effect(s) in vivo is unknown, all of these processes may contribute to the overall therapeutic effect of ERBITUX. EGFR is part of a signaling pathway that is linked to the growth and development of many human cancers, including those of the head and neck, colon and rectum.

ERBITUX (Cetuximab), in combination with radiation therapy, is indicated f
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