RAB39B (RAB39B, Member RAS Oncogene Family) is a Protein Coding gene. Diseases associated with RAB39B include Waisman Syndrome and X-Linked Non-Specific Intellectual Disability. Among its related pathways are RAB geranylgeranylation and RAB GEFs exchange GTP for GDP on RABs. RAB39B encodes a member of the Rab family of proteins. Rab proteins are small GTPases that are involved in vesicular trafficking. Mutations in RAB39B are associated with X-linked cognitive disability.