When comparing the entire sarcoidosis cohort with the healthy cohort, the values for all markers (SAA, CCL18, CA15.3, CXCL9, CXCL10, and CTO) statistically significantly differ (p-values ≤ 0.001), except for SP-D (p-value = 0.23). The gene discussed is CXCL9; the disease is sarcoidosis.