“In August Salix entered into an exclusive agreement with Alfa Wassermann S.p.A. by which we licensed rights in the United States and Canada to an extended intestinal release (EIR) formulation of rifaximin for gastrointestinal and respiratory indications, including Crohn’s disease. The EIR formulation of rifaximin has been designed to provide an efficient delivery of rifaximin by releasing the active drug following passage through the stomach in order to provide a homogeneous distribution of rifaximin in the intestinal tract. This EIR formulation of rifaximin will be studied for its potential to target difficult to treat diseases of the intestinal tract such as Crohn’s disease. We intend to initiate two Phase 3 trials during the first half of 2013 with the goal of securing FDA approval to market EIR rifaximin for the treatment of Crohn’s disease.
“We received the rights to EIR formulation rifaximin products as part of a restructuring of long-standing arrangements between Alfa Wassermann and Salix for the development and commercialization of rifaximin products in the United States and Canada for gastrointestinal and respiratory indications. The restructuring does not affect arrangements for the rifaximin products currently approved in the Salix territory, nor for any product for treatment of irritable bowel syndrome that might be approved in the future. Under the new arrangements, Salix has provided Alfa Wassermann with rights to obtain a license to develop and commercialize, outside the United States and Canada for gastrointestinal and respiratory indications, formulations of rifaximin currently being developed by Salix and other new formulations of rifaximin that Salix may develop in the future.
“During the third quarter of 2012 the Company also continued to make progress in the development of budesonide foam, a new formulation of rifaximin and LUMACAN™. We anticipate completing patient enrollment in our two budesonide foam Phase 3 trials by the end of 2012. Currently we are targeting submission of the NDA for budesonide foam for the treatment of moderate ulcerative proctitis or proctosigmoiditis during the third quarter of 2013. Regarding our next generation formulation of rifaximin, our pharmacokinetic study to assist in the characterization of three prototype tablet formulations progressed during the third quarter of 2012, and currently we intend to move forward with the initiation of a clinical trial in the first half of 2013. Work continued to progress on the development of LUMACAN oral formulation prototypes. During the third quarter we initiated an exploratory study designed to evaluate fluorescence kinetics of LUMACAN following enema administration for precancerous and cancerous lesions, in respect of the quality, onset and offset of fluorescence following administration of the enema. If the enema administration is successful, we intend to proceed to orally administered test formulations. We believe that LUMACAN, if approved, has the potential to significantly improve earlier detection and diagnosis of colon cancer.
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