Karger Publishers, Nephron, 3(141), p. 156-165, 2018
DOI: 10.1159/000494391
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<b><i>Aim:</i></b> Aim of this study was to investigate the association of genetic variants of functional polymorphisms of matrix metalloproteinase and Cubilin (CUBN) with diabetic nephropathy (DN), end-stage renal disease (ESRD), and risk of cardiovascular disease (CVD) in Caucasian type 2 diabetes (T2D) patients. <b><i>Methods:</i></b> 472 T2D-patients were genotyped for 3 single-nucleotide polymorphisms (SNPs; MMP-2 [rs2285053], MMP-9 [rs17576] and CUBN [rs1801239]). Genotyping was carried out by allelic discrimination using TaqMan SNP-genotyping-assay. <b><i>Results:</i></b> MMP-9 (<i>Gln</i>279<i>Arg)</i> AA-genotype (OR 0.17 [0.04–0.62, <i>p</i> = 0.008]) and the time elapsed since diagnosis of T2D without onset of proteinuria (OR 0.87 [0.79–0.97, <i>p</i> = 0.008]) were found to be independently associated with reduced risk of susceptibility to DN. On the contrary higher stages of chronic kidney disease (OR 1.93 [1.15–3.23], <i>p</i> = 0.012) and the presence of MMP-9 GG-genotype were independently associated with DN (OR 6.07 [1.60–22.99], <i>p</i> = 0.008). The CUBN CC or C-risk-allele of rs1801239 was associated with ESRD (OR 2.04 [1.07–3.87], <i>p</i> = 0.03) and peripheral artery disease (OR 2.08 [1.12–3.88], <i>p</i> = 0.021). We could not find an association with MMP-2, MMP-9, or CUBN with CVD in a composite clinical endpoint model. <b><i>Conclusions:</i></b> This study highlights that MMP-9 or CUBN-SNPs may exert effects on risk of susceptibility to DN or ESRD. We provide novel evidence on genetic susceptibility for macroangiopathy in patients with a missense variant of CUBN (<i>Ile</i>2984<i>Val</i>) in patients with T2D.