Several genes/loci have been reported more than once in CWP, fibromyalgia, and MCP, including EXD3, SLC39A8, AMIGO3/GMPPB/RNF123, C6orf106, FAF1, SLC24A3, and LINC01065/LINC00558. This evidence concerns the gene SLC39A8 and fibromyalgia.