Median (IQR) serum NfL was significantly higher in the LRRK2 CSFasynSAA− [17.10 (13.60–22.10) pg/mL] compared with the LRRK2 CSFasynSAA+ group [10.50 (8.43–14.70) pg/mL, P < 0.001] and the sPD group [12.60 (9.60–16.10), P < 0.001]. This evidence concerns the gene NEFL and Platelet storage pool disease.