RETN and obesity due to melanocortin 4 receptor deficiency: In the recent study, adiponectin and resistin levels were compared with in simple obesity, obese OSAS patients, and multiple symmetrical lipomatosis (LBS), and they found no significant differences in serum adiponectin and resistin levels between these groups.[28] In this study, we showed that no significant difference was noted in the levels of resistin in OSAS group compared to controls.