CCL2 and Duchenne muscular dystrophy: To confirm this finding, the same set of pre- and post-GC treated DMD patients (n = 11, age range 4–10 years old) used for the SomaScan® study were tested for longitudinal changes in the circulating levels of CXCL10, CCL2, and CCL18 using the standardized MSD ELISA assay herein.