期刊
BRITISH JOURNAL OF HAEMATOLOGY
卷 156, 期 3, 页码 358-365出版社
WILEY
DOI: 10.1111/j.1365-2141.2011.08955.x
关键词
acute lymphoblastic leukaemia; childhood; Early T-cell precursor; cell marker profile; allogeneic stem cell transplantation
类别
资金
- Children's Cancer Association of Japan
- Grants-in-Aid for Scientific Research [22659196, 21390316, 23591560, 22591171, 24390268] Funding Source: KAKEN
Early T-cell precursor acute lymphoblastic leukaemia (ETP-ALL) is a recently identified subtype of T-ALL with distinctive gene expression and cell marker profiles, poor response to chemotherapy and a very high risk of relapse. We determined the reliability of restricted panel of cell markers to identify EPT-ALL using a previously classified cohort. Then, we applied the cell marker profile that best discriminated ETP-ALL to a cohort of 91 patients with T-ALL enrolled in the Tokyo Childrens Cancer Study Group L99-15 study, which included allogeneic stem cell transplantation (allo-SCT) for patients with poor prednisone response. Five of the 91 patients (5.5%) met the ETP-ALL criteria. There were no significant differences in presenting clinical features between these and the remaining 86 patients. Response to early remission induction therapy was inferior in ETP-ALL as compared with T-ALL. The ETP-ALL subgroup showed a significantly poorer event-free survival (4-year rate; 40%) than the T-ALL subgroup (70%, P = 0.014). Of note, three of four relapsed ETP-ALL patients survived after allo-SCT, indicating that allo-SCT can be effective for this drug-resistant subtype of T-ALL.
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