To: Miljenko Zuanic who wrote (229 ) 10/28/2005 10:57:07 PM From: hmpa Read Replies (1) | Respond to of 272 Heparin is too complex to prove (easily) that iv/sc dosing and oral formulation generate the same active molecule in blood stream. Presumably, yes/no answer to this (to FDA's satisfaction) will be available within a few months: Press Release Source: Emisphere Technologies, Inc. Emisphere Technologies Completes Dosing in Heparin Clinical Trial Monday September 19, 8:00 am ET TARRYTOWN, N.Y., Sept. 19 /PRNewswire-FirstCall/ -- Emisphere Technologies, Inc. (Nasdaq: EMIS - News) today announced that it has completed dosing all arms of a clinical trial to compare heparin delivered by intravenous and subcutaneous injection to Emisphere's oral heparin capsule formulation, which uses the eligen® technology. The purpose of the study is to demonstrate that heparin delivered by the oral route by means of the eligen® technology remains unaltered and has the same molecular composition as heparin administered by the subcutaneous or intravenous routes of administration. Previous studies have shown that Emisphere's oral heparin formulation can affect the coagulation cascade in a manner similar to injectable heparin. Should the results from the study be positive, the data could support a claim that heparin is unchanged by the oral route of administration using the Emisphere technology. Emisphere is working to characterize the heparin in the human plasma with Shaker A. Mousa, Ph.D., MBA, FACC, FACB, Director of the Pharmaceutical Research Institute at the Albany College of Pharmacy, and Robert Linhardt, Ph.D., the Constellation Professor of Biocatalysis and Metabolic Engineering at the Rensselaer Polytechnic Institute and Adjunct Professor at the Albany College of Pharmacy. ADVERTISEMENT "The preliminary results of the anticoagulant parameters we have seen to date from the study are as expected," said Michael M. Goldberg, M.D. "The increase in activated partial thromboplastin time (APTT), a key measure of anticoagulant activity, in all subjects who received our oral product is consistent with our previous results, and we believe it could translate into a clinically meaningful effect. We look forward to obtaining the results from the molecular characterization work being conducted by our leading academic experts - Drs. Mousa and Linhardt. We hope to present the final results to the U.S. Food and Drug Administration (FDA) as soon as possible." "To confirm that heparin dosed intravenously or subcutaneously has the same molecular composition as heparin dosed by the oral route utilizing the eligen® technology, an extraction process, similar to that described in the literature (Toida, Edens, Linhardt), followed by several analytical processes, which have been discussed with the FDA, will be used on the human plasma collected. We have evaluated the technique with human plasma from a previous Emisphere clinical trial with the oral Heparin/SNAC product," said Dr. Linhardt. Dr. Mousa added, "Levels of anti-Xa, anti-IIa and tissue factor pathway inhibitor of the subjects will be measured for all study arms allowing Emisphere to confirm that the key pharmacodynamic parameters of heparin, when given by the various routes of administration, are consistent. The results will potentially validate that heparin is unchanged when taken orally in a dosage form utilizing Emisphere's eligen® technology." <snip>biz.yahoo.com