Indeed, we found that MERTK was significantly transcriptionally upregulated in GRN-FTD (Bonferroni corrected p = 1.9E-74) compared to control brain; however AXL expression did not significantly differ between the two conditions (Bonferroni corrected p = 0.19) (Fig. 1H). Here, MERTK is linked to frontotemporal dementia.