USP30 and type 2 diabetes mellitus: Upon assessing the expression levels of the selected five T2D-related lncRNAs (ENSG00000272512, ENSG00000285040, ENSG00000289327, USP30-AS1, and KCNJ2-AS1) (Figure 4B), all of them were found to be highly up-regulated in pro-inflammatory cells compared to M (-) cells, although only USP30-AS1 exhibited statistically significant differences.