CCL2 and Duchenne muscular dystrophy: The exception was CCL2, which showed a significant negative correlation with the four steps climbing velocity in GC naïve DMD and neared a significant negative correlation with NeuroQOL in the BMD group, exhibiting a heterogeneous degree of severity; this means that patients with elevated levels of circulating CCL2 fare better in the climb test velocity and NeuroQOL than patients with low levels of circulating CCL2.