High throughput sequencing data of 4 healthy Chinese peripheral B cells (Accession number: SRX5274837, SRX5274838, SRX5274839, SRX5274840; corresponding sample number: SAMN10786579, SAMN10786580, SAMN10786581, SAMN10786582) and another 90 sets of BCR sequencing data of healthy individuals (SRP188918 and SRP152068) of different populations including Asians and Caucasians were downloaded from the SRA database; 334 sets of BCR sequence data of the MS patients were also downloaded from the SRA database (SRP186647 and SRP042205). The gene discussed is BCR; the disease is myeloid sarcoma.