In addition to CDH1, the proteins SVEP1, THBS4, and MSLN also effectively differentiated the cancerous-PEs from all three groups of infectious PEs (vs. TB, other-infectious, and all-infectious; AUCs: 0.705–0.777), but they were either not significant (SVEP1) or not as highly significant versus the benign-PEs. Here, MSLN is linked to tuberculosis.