The first GWAS for BA in Chinese population identified the top associated SNP rs17095355 located in the intergenic region between Adducin 3 (ADD3) and X-prolyl aminopeptidase 1 (XPNPEP1); subsequent fine-mapping and expression analysis revealed ADD3 as the susceptibility gene [10,11]. The gene discussed is XPNPEP1; the disease is breast angiosarcoma.