As shown in Table 3, FGF23 correlated positively with serum 25(OH)D and serum 24.25(OH)2D (r 0.22, p = 0.04 and r 0.22, p = 0.04, respectively), and CTX correlated negatively with serum 24.25(OH)2D and 25(OH)D (r −0.31, p < 0.01 and r −0.23, p = 0.03, respectively) in MS patients. Here, FGF23 is linked to myeloid sarcoma.