My dad newly diagnosed questioning treatment choices

My dad was just diagnosed with cholangiocarcinoma.We just got back from the oncologist.We are so overwhelmed.They said surgery is out right now.too dangerous.They want to start chemo.The dr wants to do a combo of cisplatin and Gemcitabine OR a clinical trial if we choose of phase 2 study of AZD2171(cediranib) with modified FOLFOX6. anyone heard of this trial or been on any of these medications that could possibly give us some insight.The slim but possible side effects of the FOLFOX6 are really scary.