AUROC curves for the ability of GDF-15 to predict malnutrition according to the PNI and CONUT score were not significant (AUROC: 0.428; 95% CI: 0.3390.517; p = 0.117 and AUC: 0.433; 95% CI: 0.3440.523; 0.149, respectively). The gene discussed is GDF15; the disease is malnutrition.