Pairwise comparison of the serum lysozyme levels between patients with presumed sarcoidosis and presumed latent TB revealed a statistically significant difference for sarcoidosis with the p value 0.001 which was greater than the p value of pairwise comparison of the serum ACE levels between patients with presumed sarcoidosis and presumed latent TB. The gene discussed is LYZ; the disease is sarcoidosis.