Gallbladder Disease 4, also known as gbd4, is related to gallbladder disease and sitosterolemia 1. An important gene associated with Gallbladder Disease 4 is ABCG8 (ATP Binding Cassette Subfamily G Member 8), and among its related pathways/superpathways are ESR-mediated signaling and Nuclear receptors meta-pathway. Related phenotype is cholelithiasis.