For classes 1 versus class 2, representing moderate versus severe ME/CFS symptoms, ALP, MCH, lymphocytes and serum urea ranked higher on both the Gini Index and Importance scale than urinary creatinine excretion and activin B, inverting the ranking observed for comparisons against class 0 (AUC = 0.704) (Results not shown). The gene discussed is PMCH; the disease is myalgic encephalomeyelitis/chronic fatigue syndrome.