Examples of these types of syndromes are Prader-Willi syndrome (PWS), Bardet-Biedl syndrome (BBS), Albright hereditary osteodistrophy (PHP1A), Alstrom syndrome (ALMS), Cohen syndrome (COH1), Fragile X syndrome (FXS), Borjeson–Forssman–Lehmann syndrome (BFLS), Simpson-Golabi-Behmel type 2 syndrome (BFLS) and others. This evidence concerns the gene VPS13B and Prader-Willi syndrome.