Nabi Biopharmaceuticals Announces Successful Completion of NicVAX(R) Phase 2b Trial; Drug Shows Statistically Significant Rates of Smoking Cessation and Continuous Long-Term Smoking Abstinence at...( Data Presented Today at the American...),Health

Data Presented Today at the American Heart Association Scientific Sessions

2007 in Orlando, Florida

BOCA RATON, Fla., Nov. 7 /PRNewswire-FirstCall/ -- Nabi Biopharmaceuticals (Nasdaq: NABI) today announced the successful completion of its Phase 2b trial of NicVAX(R) (Nicotine Conjugate Vaccine), the company's innovative and proprietary investigational vaccine being developed to treat nicotine addiction and prevent smoking relapse. The final 12-month data confirm the highly significant trends seen in the previous data at six and nine months for both smoking cessation and long-term smoking abstinence. These data were presented at 9:45 a.m., EST today at the American Heart Association (AHA) Scientific Sessions 2007 in Orlando, Florida by one of the trial's lead investigators, Dr. Stephen Rennard, Larson Professor of Medicine, University of Nebraska Medical Center.

"I believe data from this trial are very encouraging - for smokers who are trying to quit as well as for the field of smoking cessation vaccines," said Dr. Rennard. "Only a short time ago, it was difficult to find convincing evidence to link anti-nicotine antibody with smoking cessation. This double- blind, placebo-controlled trial has demonstrated a clinical proof of concept. The data show there is a correlation between antibody level and the ability of patients to quit smoking and remain abstinent over long periods of time. This development is key for the field of smoking cessation research and could have a significant impact on how we treat patients with nicotine addiction."

NicVAX(R) Phase 2b Trial: Key Findings in Final 12 Month Data Set

Optimal NicVAX(R) Dose and Schedule Identified for Smoking Cessation a
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