|  |   |  |  | PROFILE Callisto is a biopharmaceutical company focused on the
 development of drugs to treat multiple myeloma, other
 cancers and osteolytic bone disease. Callisto’s lead drug
 candidate, Atiprimod, is a small-molecule, orally available
 compound with anti-proliferative and anti-angiogenic activity.
 Atiprimod successfully completed Phase I clinical trials
 in rheumatoid arthritis patients and was found to be
 well-tolerated with no severe side effects.
 Callisto submitted an IND in
            September 2003 to take Atiprimod into a Phase I/IIa clinical trial in multiple myeloma
			  patients. This trial is anticicated to begin December 2003. Atiprimod
			  is also being evaluated as an agent to treat osteolytic bone disease.
			  In collaboration with the National Cancer Institute, Atiprimod
			  is also being evaluated for
            the treatment of other cancers.
 Callisto has other innovative technology platforms focused on the development of an analog of the human
 intestinal hormone, uroguanylin, to treat colon cancer, and
 broad-spectrum drug candidates to protect against
 staphylococcal and streptococcal toxins, potential
 bioweapons that could be used in acts of bioterrorism.
 
 
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