Hi Liz!
On a whim I called and of course they aren't open to answer that today but I actually did get a human on the line.
Here are some that are run by the same investigator. I don't know if this includes the one mentioned in your post or not, but the investigator at least is clearly very involved with vaccine research for HER2, and successful in getting trials to happen for HER2's:
http://www.clinicaltrials.gov/ct2/sh...Hopkins&rank=1
http://www.clinicaltrials.gov/ct2/sh...Hopkins&rank=2
http://www.clinicaltrials.gov/ct2/sh...Hopkins&rank=3
http://www.clinicaltrials.gov/ct2/sh...Hopkins&rank=4
-AlaskaAngel