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Patent Issued In U.S. For EntreMed's 2ME2 In Rheumatoid Diseases

ROCKVILLE, Md., May 3, 2013 /PRNewswire/ -- EntreMed, Inc. (Nasdaq: ENMD), a clinical-stage pharmaceutical company developing therapeutics for the treatment of a variety of cancers, announced the issuance of a U.S. patent covering methods of treatment and formulations for its clinical-stage compound, 2-methoxyestradiol (2ME2).

(Logo: http://photos.prnewswire.com/prnh/20010620/ENMDLOGO)

Patent No. 8,399,440, entitled "Disease Modifying Anti-Arthritic Activity of 2-Methoxyestradiol," was granted on March 19, 2013, by the U.S. Patent & Trademark Office and contains composition and method claims covering the combination of 2ME2 and methotrexate for the treatment of rheumatic diseases, including rheumatoid arthritis.

2ME2 is an orally active compound that has antiproliferative, antiangiogenic and anti-inflammatory properties. The inhibition of angiogenesis is an important approach to the treatment of both cancer and rheumatoid arthritis. 2ME2 has potential as a single agent in rheumatoid arthritis based on its antiangiogenic, anti-inflammatory, and anti-osteoclastic (bone resorption) properties.  2ME2 has also demonstrated positive preclinical results for multiple sclerosis.

Rheumatic diseases are characterized by inflammation and loss of function in one or more connecting or supporting structures of the body.  Rheumatoid arthritis (RA) is a rheumatic disease characterized by persistent synovial tissue inflammation.  In time, this persistent inflammation can lead to bone erosion, destruction of cartilage, and complete loss of joint integrity.

Ken K. Ren, Ph.D., EntreMed's CEO, commented, "This patent further expands the intellectual property coverage for 2ME2.  We have increasing evidence that 2ME2 has anti-inflammatory properties, providing us with potential opportunities to treat diseases such as rheumatoid arthritis. Clinical trial activities have previously been conducted with 2ME2 in RA, and in December 2012, preclinical results for 2ME2 were published online in the Early Edition of Proceedings of the National Academy of Sciences (PNAS).  We believe 2ME2 has therapeutic value to the management of multiple sclerosis, RA and possible other autoimmune disorders and we are currently exploring strategies for the development of 2ME2 including potential partnership opportunities.  EntreMed's 2ME2 patent estate now provides composition, method, use, and formulation patent coverage through 2022." 

About EntreMed

EntreMed is a clinical-stage pharmaceutical company employing a drug development strategy primarily in the United States and China to develop targeted therapeutics for the global market.  Its lead compound, ENMD-2076, a selective angiogenic kinase inhibitor, has completed several Phase 1 studies in solid tumors, multiple myeloma, and leukemia, and is currently completing a multi-center Phase 2 study in ovarian cancer.  EntreMed is currently conducting a Phase 2 study of ENMD-2076 in triple-negative breast cancer and a Phase 2 study of ENMD-2076 in advanced/metastatic soft tissue sarcoma.  The Company is headquartered in Rockville, Maryland and has local operations in Beijing, China.  Additional information about EntreMed is available on the Company's web site at www.entremed.com and in various filings with the Securities and Exchange Commission (the SEC).

About ENMD-2076

ENMD-2076 is an orally-active, Aurora A/angiogenic kinase inhibitor with a unique kinase selectivity profile and multiple mechanisms of action.  ENMD-2076 has been shown to inhibit a distinct profile of angiogenic tyrosine kinase targets in addition to the Aurora A kinase.  Aurora kinases are key regulators of mitosis (cell division), and are often over-expressed in human cancers.  ENMD-2076 also targets the VEGFR, Flt-3 and FGFR3 kinases which have been shown to play important roles in the pathology of several cancers.  ENMD-2076 has shown promising activity in Phase 1 clinical trials in solid tumor cancers, leukemia, multiple myeloma, and is currently completing a Phase 2 trial for ovarian cancer.  EntreMed is currently conducting a dual-institutional Phase 2 study of ENMD-2076 in triple-negative breast cancer and a Phase 2 study in advanced/metastatic soft tissue sarcoma. ENMD-2076 has received orphan drug designation from the FDA for the treatment of ovarian cancer, multiple myeloma and acute myeloid leukemia.

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