Volume 166, Issue 4 pp. 540-549
Research Paper

Prognostic impact of KMT2E transcript levels on outcome of patients with acute promyelocytic leukaemia treated with all-trans retinoic acid and anthracycline-based chemotherapy: an International Consortium on Acute Promyelocytic Leukaemia study

Antonio R. Lucena-Araujo

Antonio R. Lucena-Araujo

Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil

Centre for Cell Based Therapy, University of São Paulo, Ribeirão Preto, Brazil

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Haesook T. Kim

Haesook T. Kim

Dana-Farber Cancer Institute, Boston, MA, USA

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Rafael H. Jacomo

Rafael H. Jacomo

Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil

Centre for Cell Based Therapy, University of São Paulo, Ribeirão Preto, Brazil

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Raul A. Melo

Raul A. Melo

Fundação HEMOPE, Recife, Brazil

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Rosane Bittencourt

Rosane Bittencourt

Federal University of Rio Grande do Sul, Porto Alegre, Brazil

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Ricardo Pasquini

Ricardo Pasquini

Federal University of Paraná, Curitiba, Brazil

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Katia Pagnano

Katia Pagnano

University of Campinas, Campinas, Brazil

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Evandro M. Fagundes

Evandro M. Fagundes

Federal University of Minas Gerais, Belo Horizonte, Brazil

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Maria de Lourdes Chauffaille

Maria de Lourdes Chauffaille

Federal University of Sao Paulo, Sao Paulo, Brazil

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Carlos S. Chiattone

Carlos S. Chiattone

Santa Casa Medical School, Sao Paulo, Brazil

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Ana S. Lima

Ana S. Lima

Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil

Centre for Cell Based Therapy, University of São Paulo, Ribeirão Preto, Brazil

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Hau C. Kwaan

Hau C. Kwaan

Northwestern University Feinberg School of Medicine, Chicago, IL, USA

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Robert Gallagher

Robert Gallagher

Albert Einstein Cancer Center, New York, NY, USA

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Charlotte M. Niemeyer

Charlotte M. Niemeyer

University Medical Centre, Freiburg, Germany

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Stanley L. Schrier

Stanley L. Schrier

Stanford University, Stanford, CA, USA

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Martin S. Tallman

Martin S. Tallman

Memorial Sloan-Kettering Cancer Center/Weill Cornell Medical College, New York, NY, USA

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David Grimwade

David Grimwade

King's College London School of Medicine, London, UK

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Arnold Ganser

Arnold Ganser

Hannover Medical School, Hannover, Germany

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Nancy Berliner

Nancy Berliner

Harvard Medical School, Boston, MA, USA

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Raul C. Ribeiro

Raul C. Ribeiro

St. Jude Children's Research Hospital, Memphis, TN, USA

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Francesco Lo-Coco

Francesco Lo-Coco

Department of Biomedicine and Prevention, University Tor Vergata, Rome, Italy

Santa Lucia Foundation, Rome, Italy

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Bob Löwenberg

Bob Löwenberg

Erasmus University Medical Centre, Rotterdam, The Netherlands

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Miguel A. Sanz

Miguel A. Sanz

Valencia University Medical School, Valencia, Spain

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Eduardo M. Rego

Corresponding Author

Eduardo M. Rego

Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil

Centre for Cell Based Therapy, University of São Paulo, Ribeirão Preto, Brazil

Correspondence: Eduardo M. Rego, MD, PhD, Medical School of Ribeirão Preto, University of São Paulo. Av. Bandeirantes, 3900, Ribeirao Preto, SP 14048-900, Brazil.

E-mail: [email protected]

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First published: 03 May 2014
Citations: 10

Summary

The KMT2E (MLL5) gene encodes a histone methyltransferase implicated in the positive control of genes related to haematopoiesis. Its close relationship with retinoic acid–induced granulopoiesis suggests that the deregulated expression of KMT2E might lead acute promyelocytic leukaemia (APL) blasts to become less susceptible to the conventional treatment protocols. Here, we assessed the impact of KMT2E expression on the prognosis of 121 APL patients treated with ATRA and anthracycline-based chemotherapy. Univariate analysis showed that complete remission (= 0·006), 2-year overall survival (OS) (= 0·005) and 2-year disease-free survival (DFS) rates (= 0·037) were significantly lower in patients with low KMT2E expression; additionally, the 2-year cumulative incidence of relapse was higher in patients with low KMT2E expression (= 0·04). Multivariate analysis revealed that low KMT2E expression was independently associated with lower remission rate (odds ratio [OR]: 7·18, 95% confidence interval [CI]: 1·71–30·1; = 0·007) and shorter OS (hazard ratio [HR]: 0·27, 95% CI: 0·08–0·87; = 0·029). Evaluated as a continuous variable, KMT2E expression retained association with poor remission rate (OR: 10·3, 95% CI: 2·49–43·2; = 0·001) and shorter survival (HR: 0·17, 95% IC: 0·05–0·53; = 0·002), while the association with DFS was of marginal significance (HR: 1·01; 95% CI: 0·99–1·02; = 0·06). In summary, low KMT2E expression may predict poor outcome in APL patients.

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