PRNP and chronic myelogenous leukemia, BCR-ABL1 positive: In this study, we observed that CML and the prion isoform (PrPSc) were deposited in numerous brain areas (data not shown), including the parietal cortex and hippocampus in 263K prion-infected hamsters; however, few or no deposits of CML or PrP were observed in the controls.