Sanofi-Aventis said on April 3rd it still has high hopes for diet drug rimonabant (Acomplia / Zimulti), even though it was rejected by a U.S. FDA advisory panel last year and recent clinical trial news has been less than wildly encouraging.

Marc Cluzel, Sanofi’s head of research, said in a round of interviews in London that he continues to believe Acomplia can be a winner.

Acomplia, which was to have been marketed in the United States as Zimulti, was withdrawn from FDA consideration last June after an expert panel unanimously recommended against approval out of concern over depressive and suicidal side-effects.

Data from a new clinical trial of possible use of Acomplia in slowing progression of coronary artery disease was reported this week along with news that 43.4 percent of patients who got rimonabant in this trial suffered psychiatric side effects such as anxiety and depression.

While the results of the heart trial were ambiguous at best, Cluzel put a positive face on it — and reiterated that Sanofi intends to resubmit rimonabant to the FDA and regulators worldwide in 2009 for approval as a treatment for type 2 diabetes.