In addition, a study involving 31 participants, including 21 type-1 diabetes mellitus patients, Mamilly et al. [50] observed a negative correlation between urinary neutrophil gelatinase-associated lipocalin-to-creatinine ratio (uNGAL/Cr) and nocturnal SBP dipping (r = −0.47; 95% CI, −0.76 to −0.03; p < 0.05). This evidence concerns the gene MMP2 and diabetes mellitus.