LINC00622 and melanoma: We further checked such two LncRNAs expression status by interrogating the Cancer Genome Atlas Program (TCGA) database containing 461 melanoma tumor tissues and 558 normal cutaneous tissues, and confirmed LINC00622 is consistently to be significantly higher-expressed in melanoma relative to normal cutaneous tissues while LINC00691 is inconsistently lower-expressed in melanoma (Fig. 1A).