FCM scoring from CD34, CD19, CD38, CD117 and CD7 was defined as advanced scoring because these antigens were frequently abnormal in high-grade MDS, and FCM scoring from CD15, CD11b, CD4 and CD56 was defined as early scoring because these antigens were frequently abnormal in low-grade MDS. The gene discussed is NCAM1; the disease is myelodysplastic syndrome.