Furthermore, as expected, no differences between MAPT mutation carriers (N = 3) (361.6 pg/mL) and HC (361.8 pg/mL) (not compared statistically due to limited group size of the MAPT mutation carriers) or non-genetic FTD (N = 170) (291.9 pg/mL) vs. HC (B = 0.138, 95%CI = − 0.041–0.317, p = 0.130) (adjusted for age and sex) were detected. Here, MAPT is linked to frontotemporal dementia.