VAC-3S immunotherapeutic vaccine for HIV completes first clinical development phase

Published on November 30, 2012 at 10:15 AM · No Comments

InnaVirVax, a biopharmaceutical company specialized in research and development on therapeutic and diagnostic solutions for diseases linked to immune dysregulation, has just announced successful completion of the first clinical development phase for VAC-3S immunotherapy in the treatment of HIV infections.  

A phase I/IIa dose escalation study was performed in 24 patients living with HIV whose CD4 T –3 lymphocyte levels were higher than 200/mm and who were under antiretroviral therapy [ART].

The treatment was administered in 3 injections at 4-week intervals. The primary endpoint of this study was to assess the safety and tolerability of VAC-3S, four weeks after the third injection. Secondary endpoints included an evaluation of the immune response, the long-term safety of the treatment and the monitoring of different biological markers of infection (including viral load and the CD4 T-lymphocyte count).  The study was carried out under double-blinded conditions in two AP-HP (Paris Public Hospitals System) academic reference clinical centers at Hôpital de la Pitié Salpêtrière and Hôpital Cochin.

The results showed that VAC-3S was well tolerated, thus meeting the primary endpoint of the study. Full results of this study will be presented at an international medical conference. 

Professor Christine Katlama, in the Infectious and Tropical Diseases Department at Hôpital de la Pitié Salpêtrière and principal investigator for the study, stated: "These results are important insofar as the primary study endpoint has been achieved.  A treatment regimen consisting of three injections of VAC-3S was thus well tolerated.  This is a key stage in the clinical development of this immunotherapy, which will supplement the antiretroviral therapies that are currently available." Professor Odile Launay, Coordinating Physician at the Cochin-Pasteur Vaccinology Clinical Investigation Center at Hôpital Cochin, and joint investigator for the study, added: "Observation of the safety of VAC-3S after three injections is very encouraging in terms of the future development prospects for this immunotherapy".

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