As of right now, UB is my school of preference, but if I get into UCSF, I might change my mind. Rutgers might come into play also. So there is a chance that I might give up my spot to someone eventually. I'm sure there are many other people in a similar situation.
I don't know the stats on UB, but UCSF (the top pharmacy school) ended up accepting somewhere around 18 people off the waitlist last year. I wouldn't give up hope if you have been interviewed and waitlisted. Many spots might open up as a lot of schools are making their decisions right now. I would definitely call UB and ask them where you rank.