LEP and obesity due to melanocortin 4 receptor deficiency: ApoB minisatellite, LPL (Lipoprotein lipase) and Leptin tetranucleotide loci are good candidates for association studies as there are several reports showing that the alleles at these loci may be associated with hypertension, obesity and coronary heart diseases [1-7] The characteristic of ApoB minisatellite, LPL and Leptin tetranucleotides is given in table 1.