Iomai Trial Shows 100 Percent Immune Response in Elderly Subjects Vaccinated With Novel Travelers' Diarrhea Pat...( GAITHERSBURG Md. Aug. 9 /- Iomai ...),Health

GAITHERSBURG, Md., Aug. 9 /PRNewswire-FirstCall/ -- Iomai Corporation (Nasdaq: IOMI) today announced that interim results from a Phase 1 safety and immunogenicity trial of its patch-based vaccine for travelers' diarrhea found that all subjects who received the vaccine -- 19 elderly and 17 adult participants -- mounted an immune response, demonstrating that even elderly subjects with weaker immune systems respond to the vaccine.

The trial was designed to compare the number of elderly subjects (65 and older) who seroconverted -- developed antibodies to the vaccine's active ingredient -- with the number of adult participants (aged 18 to 40) who seroconverted. Because the immune system is often less powerful in older people, many vaccines do not work as well in the elderly. However, all subjects who received the Iomai patch, regardless of age, seroconverted with IgG antibodies. Moreover, 18 of 19 elderly subjects and 15 of 17 adult subjects also seroconverted with IgA antibodies. The study was conducted in Belfast, Ireland, and subjects received two patches, 21 days apart, containing "heat labile" toxin, or LT, and were followed for 42 days. No treatment- related serious adverse effects were reported.

"The results of this trial further confirm that we can effectively deliver the active ingredient in our patch-based vaccine for travelers' diarrhea to adults of all ages, and based on this data, the Iomai travelers' diarrhea vaccine could be expected to extend coverage to this important at-risk segment of the traveling population," said Gregory M. Glenn, M.D., senior vice president and chief scientific officer of Iomai. "These results, coupled with the remarkable findings from our field study that we announced la
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SOURCE Iomai Corporation Copyright©2007 PR Newswire.

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