LUCAT1[16] expression levels are correlated with inflammation in COPD patients, and circRNA0001859,[17]hsa-miR-664a-3p,[18] lncRNA small nucleolar RNA host gene 5 (SNHG5),[19] and CASC2[9] are correlated with airflow limitation severity. This evidence concerns the gene LUCAT1 and chronic obstructive pulmonary disease.