MSTN and Duchenne muscular dystrophy: In addition, m-calpain from platelets was recently proven useful for identifying true DMD carriers with 90% of informative tests [28], as well as other proteins such as GDF-8 (myostatin), AUC = 0.706 (p = 0.028), and FSTN (follistatin), AUC = 0.877 (p < 0.0001) proposed by our group as biomarkers for carrier detection in DMD [30].