In order to validate the findings of increased expression of the 3’ region of GAK in PD from the RNA-sequencing study, we performed qPCR analysis on the same samples using primer-probe sets that target the exon-junctions between Gencode exons 5 and 8 (3’ exons) and Gencode exons 61 and 66 (5’ exons). Here, GAK is linked to Parkinson disease.