Indicators with meaningful differences between the two groups in the univariate analysis were selected, which included the number of episodes of pancreatitis, abdominal pain score, mental, behavioural or psychiatric abnormalities, P, R, WBC, Hb, HCT, PLT, number of items meeting the diagnostic criteria for SIRS, AMY, LPS, ALBMin, dALB, TBIL, AST, TG, TCHOL, GLU, LDH, Cr, HCO3−, Ca2+, CRP, D-D, PCT, presence of SIRS and pleural and abdominal effusion, and the Balthazar classification. The gene discussed is GSTM1; the disease is systemic inflammatory response syndrome.