FOLH1 and prostate cancer: Baum et al. reported that 45 days after the injection of botulinum toxin A (80 units) into the right parotid gland of a prostate cancer patient, a [68Ga]Ga-PSMA-11 scan showed an up to 64% reduction in SUVmean of the treated parotid gland as compared with baseline 11, but no follow-up studies were reported.