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A 17-gene stemness score for rapid determination of risk in acute leukaemia.

Abstract：

:Refractoriness to induction chemotherapy and relapse after achievement of remission are the main obstacles to cure in acute myeloid leukaemia (AML). After standard induction chemotherapy, patients are assigned to different post-remission strategies on the basis of cytogenetic and molecular abnormalities that broadly define adverse, intermediate and favourable risk categories. However, some patients do not respond to induction therapy and another subset will eventually relapse despite the lack of adverse risk factors. There is an urgent need for better biomarkers to identify these high-risk patients before starting induction chemotherapy, to enable testing of alternative induction strategies in clinical trials. The high rate of relapse in AML has been attributed to the persistence of leukaemia stem cells (LSCs), which possess a number of stem cell properties, including quiescence, that are linked to therapy resistance. Here, to develop predictive and/or prognostic biomarkers related to stemness, we generated a list of genes that are differentially expressed between 138 LSC+ and 89 LSC- cell fractions from 78 AML patients validated by xenotransplantation. To extract the core transcriptional components of stemness relevant to clinical outcomes, we performed sparse regression analysis of LSC gene expression against survival in a large training cohort, generating a 17-gene LSC score (LSC17). The LSC17 score was highly prognostic in five independent cohorts comprising patients of diverse AML subtypes (n = 908) and contributed greatly to accurate prediction of initial therapy resistance. Patients with high LSC17 scores had poor outcomes with current treatments including allogeneic stem cell transplantation. The LSC17 score provides clinicians with a rapid and powerful tool to identify AML patients who do not benefit from standard therapy and who should be enrolled in trials evaluating novel upfront or post-remission strategies.

journal_name

Nature

journal_title

Nature

authors

Ng SW,Mitchell A,Kennedy JA,Chen WC,McLeod J,Ibrahimova N,Arruda A,Popescu A,Gupta V,Schimmer AD,Schuh AC,Yee KW,Bullinger L,Herold T,Görlich D,Büchner T,Hiddemann W,Berdel WE,Wörmann B,Cheok M,Preudhomme C,Domb

doi

10.1038/nature20598

subject

Has Abstract

pub_date

2016-12-15 00:00:00

pages

433-437

issue

7633

eissn

0028-0836

issn

1476-4687

pii

nature20598

journal_volume

540

pub_type

杂志文章

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