Although ≥ 75% EWL was associated with better metabolic syndrome remission 1 year after bariatric surgery [21], there are few published studies regarding predictors of excellence (%EWL ≥ 75%) after bariatric surgery, LCN2 is closely associated with obesity and obesity-related metabolic disorders, but its impact on weight loss after surgery is unknown. This evidence concerns the gene LCN2 and Obesity.