Pairwise comparison of mean (SD) difference of serum lysozyme level between AS and BD was −0.247 (1.033), between AS and presumed latent TB was −0.863 (1.085), between AS and presumed latent syphilis was 0.144 (2.020), between BD and presumed latent TB was −0.616 (1.124), between BD and presumed latent syphilis was 0.391 (2.031), and between presumed latent TB and presumed latent syphilis was 1.007 (2.047) (Table 5). Here, LYZ is linked to Behcet disease.