This study compared the expression levels of AGR3, BCHE, CBY1, CHRM3, DDHD1, DMPK, EDEM3, EDN1, HSPA2, KPNA2, LGALS3, MAOB, PIK3CA, PURA, and TMCC1 between COPD and control groups and evaluated their predictive abilities. The gene discussed is TMCC1; the disease is chronic obstructive pulmonary disease.