To: nigel bates who wrote (27 ) 2/20/2002 10:56:37 AM From: keokalani'nui Respond to of 130 AVANT Announces Preliminary Results of its Phase II Study of TP10 in Adults Undergoing Cardiac Surgery NEEDHAM, Mass.--(BW HealthWire)--Feb. 20, 2002--AVANT Immunotherapeutics, Inc. (Nasdaq: AVAN - news) today announced that TP10, its lead complement inhibitor, failed to meet the primary endpoint in a double-blind, placebo-controlled Phase II study in adult patients undergoing high risk cardiac surgery. Announcing the results, Dr. Alistair Wheeler MD, Vice President, Medical Affairs of AVANT said, ``there were no clinically important differences between placebo and any of the four dose groups in the study. A total of 564 patients were randomized into the study to receive either one of four doses (1, 3, 5 or 10 mg/kg) of TP10, or placebo, as a thirty-minute intravenous infusion and were followed for 28 days post surgery. The primary efficacy endpoint of the study was the comparison of TP10 treated patients versus placebo who experienced either death, myocardial infarction, required prolonged intubation or prolonged intra-arterial balloon pump therapy. TP10 was well tolerated with no apparent differences in the safety profiles of the treatment groups.'' ``Obviously, we are extremely disappointed by the results of this study,'' said Una S. Ryan, Ph.D., President and Chief Executive Officer of AVANT Immunotherapeutics, Inc. ``We are evaluating the future of the TP10 program but we no longer plan to advance TP10 in clinical development on our own nor do we intend to put anymore AVANT resources into this program. We will try to capture what value we can for the TP10 program,'' continued Dr. Ryan.