SAVARA INC. — Department of Health and Human Services SBIR Phase II: NHLBI

Description

DESCRIPTION provided by applicant Persistent respiratory methicillin resistant Staphylococcus aureus MRSA infections have become increasingly common in cystic fibrosis CF patients with a prevalence of almost in CF patients in the US This is concerning as MRSA positivity is associated with a faster decline of lung function and a years shorter median life expectancy compared to CF patients without MRSA Unfortunately there is no effective and safe treatment of persistent MRSA infections available for CF patients Savara Inc is developing a novel inhaled dry powder form of vancomycin AeroVanc for the treatment of respiratory MRSA infection in CF patients The product is intended for convenient self administration at home It is envisioned to improve lung function as well as to decrease the need for intravenous IV antibiotics and hospitalization Vancomycin is the drug of choice for the treatment of bronchopneumonia due to MRSA but it is only available in IV form it penetrates the lungs poorly by IV administration and may also be associated with systemic toxicity generally limiting its use to hospital settings There is significant clinical advantage n delivering vancomycin directly to the site of infection in order to improve clinical efficacy and reduce systemic exposure The off label administration of the IV product has proven to be encouraging The published data from clinical trials indicate that pulmonary administration of vancomycin is safe and well tolerated and reduces or may even eliminate MRSA from the sputum of CF patients However the IV formulation has not been optimized for pulmonary administration There are considerable technical challenges and limitations to its use that have not been adequately addressed and that impact its clinical viability Savara has overcome the significant technical challenges to the development of an inhalable vancomycin powder by using innovative particle coating technology enabling for the first time the development of a practical and effective inhalation treatment of pulmonary MRSA infection Savaraandapos s novel dry powder formulation of vancomycin AeroVanc has physical chemical and aerodynamic properties ideally suited for delivery using an off the shelf inhaler device Savara has advanced the product development rapidly and has completed the aims of a Phase SBIR as well as progressed beyond the aims by conducting a successful Phase I clinical study in healthy volunteers The aerosol performance of AeroVanc the rat day inhalation toxicology study as well as the Phase I clinical study indicate that AeroVanc is a highly efficient and well tolerated formulation of vancomycin and is well suited for further non clinical studies and further clinical development in MRSA infected CF patients This SBIR Phase project focuses on development of an automated capsule filling and packaging process required for further clinical studies completion of IND enabling day inhalation toxicology studies in two species submission of an IND and finally the conduct of a Phase IIa clinical proof of concept study in respiratory MRSA infected CF patients PUBLIC HEALTH RELEVANCE The most common cause of death among cystic fibrosis CF patients is respiratory failure secondary to chronic pulmonary infections including methicillin resistant Staphylococcus aureus MRSA infections which are prevalent in almost of CF patients and have been shown to be associated with a shorter life expectancy compared to CF patients without MRSA Vancomycin the drug of choice for the treatment of bronchopneumonia due to MRSA is available only in intravenous form and is associated with systemic toxicity limiting its use to hospital administration To address the high need Savara Inc is developing a convenient inhaled dry powder form of vancomycin AeroVanc as a more efficacious and safer method of treating pulmonary MRSA infections