RBP4 and obesity due to melanocortin 4 receptor deficiency: In contrast, SM (OH)s, SM (2OH)s, and GSLs exhibited favorable correlations with obesity (rs = −0.07 to −0.19), triglycerides/HDL-cholesterol (rs = −0.08 to −0.20), CRP (rs = −0.08 to −0.14), adiponectin (rs = 0.06 to 0.15), and RBP4 (rs = −0.06 to −0.15) (Figure S3).