Merrimack Pharmaceuticals, Inc. announced today that the first patient has received an initial dose in a Phase 1 /2 clinical study combining MM-111 with Herceptin® (trastuzumab) in patients with advanced Her2 positive breast cancer.
Cambridge, Mass. (PRWEB) May 17, 2010 -- Merrimack Pharmaceuticals, Inc. announced today that the first patient has received an initial dose in a Phase 1 /2 clinical study combining MM-111 with Herceptin® (trastuzumab) in patients with advanced Her2 positive breast cancer.
MM-111 is a bi-specific antibody that targets tumor cells over-expressing ErbB2/HER2. MM-111 is designed to inhibit the signaling between ErbB2/HER2 and ErbB3/HER3 thus disabling the phosphatidylinositol 3-kinase (PI3K) pathway and preventing tumor proliferation.
“Our team is quite excited to test this combination in clinical trials given the preclinical data we have produced showing that MM-111 and Herceptin® have very complementary mechanisms of action,” said Clet Niyikiza, Ph.D., Executive Vice President of Development at Merrimack. “We believe that by combining the two candidates, we have the potential to treat a number of HER2 positive breast cancer patients who are not benefiting from current treatments.”
The Phase 1 /2 study will initially evaluate the human safety and pharmacokinetics of MM-111 in combination with Herceptin® and establish a safe regimen. The Phase 2 portion of the study will then investigate the regimen’s efficacy in the advanced Her2 positive breast cancer patient population. The trial is based on preclinical work showing that MM-111 and Herceptin® positively combine to inhibit the growth of ErbB2 over-expressing breast cancer cells. The Gabrail Cancer Center in Canton, Ohio, Huntsman Cancer Institute in Salt Lake City, Utah, and the Massachusetts General Hospital in Boston, Massachusetts, will part
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