Finally, the great upregulation of thrombospondin 2 (THBS2), a pro-fibrotic and anti-angiogenic matricellular protein, in both SM and WB, corroborates previous findings of Che et al. [3] in these two myopathies as well as those of Brothers et al. [13] in male broilers affected by WB. Here, THBS2 is linked to myopathy.