There was a significant difference between GGT levels in U/L (18.34 ± 7.77 vs. 26.17 ± 17.43; p = 0.020) in obese children with vs. without metabolic syndrome; on the other hand, there were no significant differences in leptin levels in ng/mL (32.42 ± 21.39 vs. 28.40 ± 14.58; p = 0.400), adiponectin in μg/mL (28.00 ± 19.98 vs. 31.42 ± 28.34; p = 0.580), IL-6 in pg/mL (5.53 ± 4.90 vs. 4.59 ± 3.45; p = 0.400), or TNF-α in pg/mL (6.71 ± 4.15 vs. 6.55 ± 3.04; p = 0.870) between the groups (Table 4). This evidence concerns the gene TNF and metabolic syndrome.