LRP4 and myasthenia gravis: Outliers were observed in all MG subgroups with higher median sNfl levels in anti-MuSK-Abs (median sNfl 66.2 pg/ml; IQR 55.2–77.3) and anti-LRP4-Abs positive patients (median sNfl of 62.75 pg/ml; IQR 56.3–69.3) compared to anti-AChR-Abs positive patients (48.6 pg/ml; IQR 47.5–58.1).