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Small number of HTLV-1-positive cells frequently remains during complete remission after allogeneic hematopoietic stem cell transplantation that are heterogeneous in origin among cases with adult T-cell leukemia/lymphoma.
- Source :
-
Leukemia (08876924) . Jun2007, Vol. 21 Issue 6, p1212-1217. 6p. 2 Diagrams, 5 Charts, 1 Graph. - Publication Year :
- 2007
-
Abstract
- Allogeneic hematopoietic stem cell transplantation (allo-HSCT) can provide long-term remission for patients with adult T-cell leukemia/lymphoma (ATLL) caused by human retrovirus, human T-lymphocyte virus (HTLV-1). To understand how HTLV-1-positive cells including ATLL cells were suppressed by allo-HSCT, we examined HTLV-1 provirus load and residual ATLL cells in peripheral blood of transplant recipients using PCR-based tests. We found that the copy number of HTLV-1 genome, called provirus, became very small in number after allo-HSCT; however, in most cases, provirus did not disappear even among long-term survivors. Tumor-specific PCR tests demonstrated that most of HTLV-1-positive cells that remained long after transplantation were not primary ATLL cells but donor-derived HTLV-1-positive cells. We also found a case having very low amount of residual disease in peripheral blood even long after transplantation. There was only one recipient in whom we failed to show the presence of HTLV-1 genome and antibody against HTLV-1 even with an extensive search, which strongly suggested the elimination of HTLV-1 after allo-HSCT. These results demonstrated that after allo-HSCT the small amount of residual HTLV-1-positive cells were heterogeneous in origin and that long-term disease control for ATLL could be obtained without the complete elimination of HTLV-1.Leukemia (2007) 21, 1212–1217. doi:10.1038/sj.leu.2404678; published online 5 April 2007 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08876924
- Volume :
- 21
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Leukemia (08876924)
- Publication Type :
- Academic Journal
- Accession number :
- 25149342
- Full Text :
- https://doi.org/10.1038/sj.leu.2404678