[Cell origin of 18 patients with non-T, non-B acute lymphoblastic leukemia].
Zhonghua zhong liu za zhi [Chinese journal of oncology]
M H Tang
Abstract
Cell surface markers of 18 patients with non-T, non-B acute lymphoblastic leukemia (ALL) were analysed with a panel of monoclonal antibodies (McAbs) by indirect immunofluorescence. The results showed that the cells of 13/18 patients originated from immature B cell or B progenitors. The cells of 12/18 patients expressed B cell antigens (CD 19+ or CDw 40+). It was suggested that antibodies directed to these two surface markers could help each other in the diagnosis of ALL of B cell origin. Diagnosis might be further improved if anti-CD19 and CDw 40 McAb be used at the same time. CD 9 antigen was expressed on immature B cell surface. 13/14 patients with B-CLL did not react with anti-CD 9, but 14/18 with non-T, non-B ALL were positive. Cells of 7/18 patients expressed CALLA (CD 10), HLA-DR and CD 19/CDw 40, but did not express T cell associated antigens (CD1, CD2, CD3, CD7), so CALLA(+)-ALL also belongs to B cell lineage.