Singapore: Influenza vaccine (gH1-Qbeta) developed by Singapore's Agency for Science, Technology and Research (A*STAR) and Switzerland's Cytos Biotechnology has met its primary end point for immunogenicity (seroconversion based on haemaglutination inhibition titres according to FDA criteria) in the phase I clinical trial in healthy Asian volunteers.

The induced immune response showed good cross-reactivity to recent drifted H1N1 strains. The H1N1 influenza vaccine candidate is based on Cytos' proprietary bacteriophage Qbeta virus-like particle (VLP) technology.

The clinical trial, commenced in May 2013 and completed enrollment and treatment of all 84 healthy volunteers in August 2013. During this trial the volunteers received two injections of the vaccine, 21 days apart. A*Star and Cytos are pleased to announce that the vaccine was safe and well tolerated and no serious adverse events were reported during the trial. The induced immune responses were comparable to that of approved seasonal influenza vaccines.

A*Star is developing the vaccine candidate under a collaborative R&D and commercialization agreement entered into with Cytos in 2010, with the goal of providing the government of Singapore effective means of combatting influenza epidemics and pandemics. Under the agreement, Cytos retains the worldwide right to develop and commercialize the vaccine candidate globally, while A*Star subsidiaries have the right to develop and commercialize the vaccine for Singapore and other ASEAN countries and can earn royalties on worldwide net sales.

Mr Christian Itin, chairman and CEO, Cytos, commented, "We are encouraged to see seroconversion in patients treated with our bacterially derived recombinant flu vaccine and are evaluating next steps with our partner A*STAR. The results of this study further support the utility of our VLP vaccine platform for the treatment of infectious diseases."

Professor Alex Matter, CEO, D3 (Drug Discovery and Development) and A*Star's Experimental Therapeutics Center (ETC), said, "We are very pleased with the outcome of this trial. The favourable data demonstrates that the VLP-vaccine strategy is an effective one. We are now planning, in conjunction with Cytos, the next steps for this project."