In our previous report, we demonstrated that elevated serum myostatin level can be associated with hyperammonemia (correlation coefficients; r = 0.5856 in males and r = 0.3922 in females), hypoalbuminemia (correlation coefficients; r = −0.3844 in males and r = −0.3945 in females), and poor outcomes [58]. The gene discussed is MSTN; the disease is Hyperammonemia.