Moreover, urinary TUG1 level significantly correlated with eGFR in patients with pure class V lupus nephritis (r = 0.706, p = 0.01) and those with primary membranous nephropathy (r = 0.771, p = 0.001), though it did not correlate with minimal change nephropathy (Figure 5). This evidence concerns the gene TUG1 and membranous glomerulonephritis.