Extended Data Fig. 4 |. Rate of change per year of serum NfL is a better parameter to distinguish presymptomatic and symptomatic mutation carriers from non-carriers compared to single cross-sectional serum NfL.
Receiver operating characteristic analysis for non-carriers (NC) versus presymptomatic mutation carriers (MC) and non-carriers versus symptomatic mutation carriers with cross-sectional (baseline serum NfL) and longitudinal (serum NfL rate of change per year) data. The true positive fraction (sensitivity) is on the y axis and the false positive fraction (1-specificity) on the x axis. The area under the curve (AUC, accuracy), as well as the cutoff value and χ2 P value from the logistic regression are shown. The chance level of the area under the curve is 0.50. Converters (for rate of change, see Fig. 2c) were considered presymptomatic mutation carriers.