Moreover, a cluster of genes in the BTA21 (GABRG3, MAGEL2, MKRN3, NDN, SNRPN, and SNURF) was significantly associated (FDR = 1.07 × 10−6) with the Prader-Willi and Angelman syndromes pathway in the PPI analysis. This evidence concerns the gene MAGEL2 and Angelman syndrome.