SNHG5 and chronic obstructive pulmonary disease: lncRNA SNHG5, located on chromosome 6q14.3, was reported to regulate progression of colorectal cancer [14–16], nasopharyngeal carcinoma [17], ovarian cancer [18], breast cancer [19], glioma [20], and COPD [21], etc. What’s more, SNHG5 was down-regulated in colitis samples according to bioinformatic analysis [22].