Serum levels of CA3 and MYL3 ranged between 360 and 10, 257 ng/ml and 5.7 and 708.9 ng/ml in DMD patients and between 16.5 and 397.6 ng/ml and 3.6 ng/ml and 45.3 ng/ml in healthy individuals. This evidence concerns the gene MYL3 and Duchenne muscular dystrophy.