( Ace Biosciences Ace393 the World's F...)Ace Biosciences, Ace393, the World's First Commercial Vaccine for,Travellers' Diarrhoea Caused by Campylobacter Successfully,Completes Phase I Clinical Trials,Health

Ace Biosciences, Ace393, the World's First Commercial Vaccine for Travellers' Diarrhoea Caused by Campylobacter Successfully Completes Phase I Clinical Trials

Trial confirms good safety profile and strong immunogenicity

ODENSE, Denmark, March 28, 2007 -ACE BioSciences A/S, the infectious diseases company is pleased to announce the successful completion of Phase I clinical trials with its lead product, ACE393, the world's first commercial vaccine for Travellers' Diarrhoea (TD) caused by Campylobacter infection.

ACE393 is an injectable vaccine designed to combat the bacterium Campylobacter jejuni, one of the greatest causes of bacterial diarrhoeal infections in the developed world. The two stage, double blind, randomised, placebo-controlled trial confirmed that the vaccine was very well tolerated and that the strongest immune response was stimulated by the highest dose when administered in two doses either two or three weeks apart, with 100% of subjects responding. Adverse reactions were transient local site reaction and headaches in some subjects.

Dr Philippe Reboud, (Mediscis Phase I clinical unit) the study_s Principal Investigator commented "These are very satisfying results. The study clearly confirms the vaccine's safety and tolerability. Furthermore, at the 250µg dose, ACE393 stimulates a four fold increase in IgG antibody titre in all subjects, indicating strong immunogenicity (ability to stimulate an immune response). In the past it has proved too challenging to develop an effective vaccine against Campylobacter infection and Travellers' Diarrhoea has been difficult to prevent, leading to the incidence of serious long-term post infection complications such as Guillain Barre Syndrome and reactive arthritis in a few patients. However, thanks to the innovative approach taken by ACE BioSciences, this looks set to change."

Ms Ingelise Saunders, ACE BioSciences, C
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