CCBE1 (Collagen And Calcium Binding EGF Domains 1): CCBE1 is essential for lymphangiogenesis, the formation of lymphatic vessels. It plays a role in the regulation of vascular endothelial growth factor C (VEGF-C), which is critical for the development of the lymphatic system. Mutations in CCBE1 can lead to Hennekam syndrome, a condition characterized by lymphedema, lymphangiectasia, and intellectual disability....