RETN and atherosclerosis: Atherosclerosis markers that were examined only in one study and therefore could not be meta-analyzed included resistin (−4.00 [−15.84, 7.84]; P = 0.51) ng/ml16, endothelin (0.11 [−0.03, 0.25]; P = 0.12) ng/ml16, pentraxin-3 (0.50 [−0.42, 1.41]; P = 0.29)28, c-peptide (−0.54 [−1.59, 0.52]; P = 0.32)28, and leptin (−1.67 [−2.64, −0.70]; P = 0.0007) μg/L16 (Mean differences [95% CI] in the changes from baseline between GLP-1-based therapy and control patients).