If you complete all of the screening tests and are eligible to participate in the study, you will be scheduled to return to the clinic within 14 days, for baseline testing and the start of treatment (Day 1). You will be asked questions about your medical history and the medications you used since the last visit. You will have a physical exam, including measurement of your vital signs, and routine blood tests (about 1 teaspoon). A blood sample (roughly less than half of a teaspoon) will also be drawn for pharmacokinetic (PK) testing. PK testing is used to measure the amount of atiprimod in your blood. This first blood sample will be your "baseline" PK sample, and the drug level in later blood samples will be compared to it.