And Kyn/Trp ratio (95%CI 0.673–0.949, P = 0.002), D-dimer (95%CI 0.612–0.899, P = 0.010) and CRP (95%CI 0.674–0.977, P = 0.001) had much higher AUC for predicting death of AIDS-PCP patients. Here, CRP is linked to pneumocystosis.