Both CT-2103 and gemcitabine are given through a vein. On the first day of your therapy (called 'Day 1'), you will receive a routinely given medication, ondansetron (Zofran), that will help decrease the risk of nausea. About 30 minutes later, CT-2103 will be given over 10-20 minutes followed by gemcitabine over 30 minutes.