We also examined the expressions of those lncRNAs on IDD tissues using RT-qPCR, and the results showed that GRAMD1B expression was upregulated, while the levels of DLEU1, ARMCX4, AC019205.1, DGCR5 were downregulated in IDD tissues (Figure S2). Here, DGCR5 is linked to intervertebral disk degenerative disorder.