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Lookup NU author(s): Dr Michael Reid, Professor Andrew Pearson, Professor Stephen Proctor, Dr Peter Hamilton, Dr Andrew Hall
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Immunocytochemistry was used to assess bcl-2 expression in blasts obtained from the bone marrow of 28 patients with acute lymphoblastic leukaemia (ALL) (16 children and six adults at presentation and three children and three adults on relapse) and 20 with acute myeloid leukaemia (AML) (19 adults and one child, 13 with de novo AML, 11 at presentation and two on relapse, and seven secondary to myelodysplasia or chronic myeloid leukaemia). Slides were examined both for the percentage of positive cells and for the intensity of staining using a five-point scale. There was a statistically significant increase in both the percentage of positive cells seen (P < 0.002) and the intensity of staining (P < 0.01) between samples obtained at relapse and those at presentation in ALL. There was a significantly greater intensity of staining in cells from patients with ALL (P < 0.05) and AML (P < 0.05) who failed to achieve remission after chemotherapy than in those who responded. The intensity of staining in cases of secondary AML was lower than that in de novo disease (P < 0.01). These results suggest that expression of bcl-2 may be an important prognostic feature in both de novo AML and in ALL, but not in secondary AML.
Author(s): Maung, Z. T., MacLean, F. R., Reid, M. M., Pearson, A. D. J., Proctor, S. J., Hamilton, P. J., Hall, A. G.
Publication type: Article
Publication status: Published
Journal: British Journal of Haematology
Year: 1994
Volume: 88
Issue: 1
Pages: 105-109
Print publication date: 01/09/1994
ISSN (print): 0007-1048
ISSN (electronic): 1365-2141
URL: http://dx.doi.org/10.1111/j.1365-2141.1994.tb04984.x
DOI: 10.1111/j.1365-2141.1994.tb04984.x
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