PPARG and obesity due to melanocortin 4 receptor deficiency: The polymorphism PPARG Pro12Ala (rs1801282) has been studied indifferent populations with contradictory results; in some studies Ala allele wasassociated with obesity (Bhatt et al.,2012; Morini et al.,2008), whereas in a Chinese population, it was reported as a protecting factor(Wang et al., 2013).