Just wondering but if a person has no problem during the first two years of medical school and does well in class and on boards but then realizes they do not enjoy clinicial medicine and would prefer research what options are open to them? Can they apply for transfer into pHD programs? I know most MD/PhD's begin their first 2 years in med school so I would guess they could with minimal delay but it is something I have wondered just in case things don't work out.......