ATG5 and myeloid sarcoma: Serum concentrations of ATG-5 were more elevated in Gd+ MS (mean ± standard deviation (SD) 40.41 ± 11.49 ng/ml) than in Gd− MS patients (mean ± SD 16.53 ± 6.80 ng/ml) (unpaired t test; p < 0.0001) (Fig. 2a).