Fig 2. Scatterplot of WBNAA versus MD for the 10 patients (black circles) and 9 controls (white circles). The WBNAA deficit strongly inversely correlates with MD increase (r = –0.879, P = .01) in patients (WBNAA = –18.69.MD + 27.65, solid line) but not in controls (r = 0.012, P = .975, dashed line).