I called yesterday to tell the nurse about my sore, white tongue. I was asked if I was taking any new medications. No. Any changes in diet, etc. No. Do you see things that look like pimples on your tongue, too? Lemme look. Yes. Said she'd never heard of this being a side effect of treatment, maybe I should go to my family doctor.
So I told her I'd just pulled out the study documents and, in fact, mouth sores, tongue inflammation, etc is listed in the side effects.