I've been sorting through the rare results of ME/CFS patients here with 23andMe results, based on what has been filtered out by the rare gene analyzer at https://sourceforge.net/projects/analyzemygenes/ (10% file is at https://sourceforge.net/projects/analyzemygenes/files/Databases/ ). There have been some false positives, but something which looked like it was homozygous in only three out of the seven of us turned out to be heterozygous for the rest of us. 10% of the population is heterozygous, and only 1% is homozygous - so this may be very significant. The rsID is rs952061, which can be viewed in your 23andMe files at https://www.23andme.com/you/explorer/snp/?snp_name=rs952061 . The rare allele is T. Thus far we have homozygous results for allyb, GypsyA, roxie60, and heterozygous results for nandixon, Sea, Valentijn, and presumably for GypsyA's daughter, who must have gotten at least one copy from GypsaA but didn't get flagged as having two copies. I'd appreciate it if other users with ME/CFS could look up their result for that gene, and let me know if they have CC, CT, or TT. More info in following posts.