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Transplant outcomes of the triple-negative NPM1/FLT3-ITD/CEBPA mutation subgroup are equivalent to those of the favourable ELN risk group, but significantly better than the intermediate-I risk group after allogeneic transplant in normal-karyotype AML.

Abstract：

:The prognostic significance of molecular mutations (FLT3-ITD, NPM1, and CEBPA mutations) was examined in patients with normal-karyotype acute myeloid leukaemia (NK-AML) after allogeneic haematopoietic cell transplantation (HCT). In total, 115 patients received allogeneic HCT for NK-AML and were evaluated for FLT3-ITD, NPM1, and CEBPA mutations in diagnostic samples and for long-term outcomes following HCT, retrospectively. The prevalences of FLT3-ITD(pos), NPM1 (mut), and CEBPA (dm) (double mutations) were 32.2, 43.5, and 24.6 %, respectively. The triple-negative group (NPM1 (wild)/FLT3-ITD(neg)/non-CEBPA (dm)) showed a similar transplant outcome to those in the favourable European LeukemiaNet (ELN) risk group for overall survival (OS) (60.9 vs. 63.7 %; p = 0.810), but a more favourable OS than others in the intermediate-I risk group (40.0 %; p = 0.034). Also, the triple-negative group showed a similar relapse rate at 5 years compared with those in the favourable risk group (9.7 vs. 15.5 %; p = 0.499), but a lower rate of relapse than the others in the intermediate-I risk group (15.5 vs. 48.6 %; p = 0.004). The 5-year relapse incidences were 4.0 % (NPM1 (mut)/FLT3-ITD(neg)), 14.7 % (CEBPA (dm)), 15.5 % (NPM1 (wild)/FLT3-ITD(neg)/non-CEBPA (dm)), 39.1 % (NPM1 (mut)/FLT3-ITD(pos)/non-CEBPA (dm)), and 66.7 % (NPM1 (wild)/FLT3-ITD(pos)/non-CEBPA (dm)). Thus, the triple-negative (NPM1 (wild)/FLT3-ITD(neg)/non-CEBPA (dm)) group showed favourable long-term outcomes after allogeneic HCT in NK-AML, similar to those of the favourable risk group by the ELN risk classification.

journal_name

Ann Hematol

journal_title

Annals of hematology

authors

Ahn JS,Kim HJ,Kim YK,Jung SH,Yang DH,Lee JJ,Kim NY,Choi SH,Jung CW,Jang JH,Kim HJ,Moon JH,Sohn SK,Won JH,Kim SH,Kim DD

doi

10.1007/s00277-015-2580-z

subject

Has Abstract

pub_date

2016-03-01 00:00:00

pages

625-35

issue

eissn

0939-5555

issn

1432-0584

pii

10.1007/s00277-015-2580-z

journal_volume

pub_type

杂志文章

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Transplant outcomes of the triple-negative NPM1/FLT3-ITD/CEBPA mutation subgroup are equivalent to those of the favourable ELN risk group, but significantly better than the intermediate-I risk group after allogeneic transplant in normal-karyotype AML.