We report here that HF1/F13B are proximal to the C4BP/MCP genes.     ///    "In summary, we propose the following gene order: centromere-HF1/F13B-PTPRC-REN-C4BP/MCP-telomere.. "    ///    We also propose that PTPRC and REN genes map to a region of the RCA gene cluster between the HF1/F13B and C4BP/MCP regions. 