We analysed which parameter had the greatest effect on all-cause mortality in AAV patients among the three variables constituting the formula of the BARD score: AST/ALT ratio ≥ 0.8, BMI ≥ 28 kg/m2, and the presence of T2DM, using the Kaplan–Meier survival analysis with the log-rank test. This evidence concerns the gene GPT and type 2 diabetes mellitus.