SET-NUP214 is a recurrent γδ lineage-specific fusion transcript associated with corticosteroid/chemotherapy resistance in adult T-ALL
Open Access
- 20 March 2014
- journal article
- Published by American Society of Hematology in Blood
- Vol. 123 (12), 1860-1863
- https://doi.org/10.1182/blood-2013-08-521518
Abstract
The SET-NUP214 (TAF1/CAN) fusion gene is a rare genetic event in T-cell acute lymphoblastic leukemia (T-ALL). Eleven (6%) of 196 T-ALL patients enrolled in the French Group for Research on Adult Acute Lymphoblastic Leukemia (GRAALL) 2003 and 2005 trials harbored a SET-NUP214 transcript. SET-NUP214–positive patients were predominantly (10 [91%] of 11) T-cell receptor (TCR)–negative and strikingly associated with TCRγδ lineage T-ALLs, as defined by expression of TCRγδ, TCRδ and/or TCRγ rearrangements but no complete TCRβ variable diversity joining rearrangement in surface CD3/TCR-negative cases. When compared with SET-NUP214–negative patients, SET-NUP214–positive patients showed a significantly higher rate of corticosteroid resistance (91% vs 44%; P = .003) and chemotherapy resistance (100% vs 44%; P = .0001). All SET-NUP214–positive patients but one achieved complete remission, and 9 were allografted. Despite the poor early-treatment sensitivity, the outcome of SET-NUP214–positive patients was similar to that of SET-NUP214-negative patients.Keywords
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