Number of variants located in the X chromosome retained after each filter step.

Abbreviations: SNPs, single nucleotide variants/polymorphisms; INDELs, insertions and deletions; MAF, minor allele frequency; GoNL, Genome of the Netherlands project database, 498 unrelated Dutch individuals; EA, NHLBI Exome Sequencing Project database, 4,300 European-American unrelated individuals; 1000G, 1000 Genomes Project, 2,500 individuals from about 25 populations around the world.

缩写说明如下：单核苷酸变异/多态性（single nucleotide variants/polymorphisms, SNPs）、插入缺失（insertions and deletions, INDELs）、次要等位基因频率（minor allele frequency, MAF）；荷兰基因组计划数据库（Genome of the Netherlands project database, GoNL），纳入498名无关荷兰个体；美国国立心肺血液研究所外显子组测序计划数据库（NHLBI Exome Sequencing Project database, EA），纳入4300名无关欧裔美国个体；千人基因组计划（1000 Genomes Project, 1000G），涵盖来自全球约25个人群的2500名个体。