Volume 171, Issue 1 pp. 91-99
Research Paper

TP53 overexpression is an independent adverse prognostic factor in de novo myelodysplastic syndromes with fibrosis

Sanam Loghavi

Sanam Loghavi

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Alyaa Al-Ibraheemi

Alyaa Al-Ibraheemi

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Zhuang Zuo

Zhuang Zuo

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Guillermo Garcia-Manero

Guillermo Garcia-Manero

Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Mariko Yabe

Mariko Yabe

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Sa A. Wang

Sa A. Wang

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Hagop M. Kantarjian

Hagop M. Kantarjian

Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Cameron C. Yin

Cameron C. Yin

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Roberto N. Miranda

Roberto N. Miranda

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Raja Luthra

Raja Luthra

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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L. Jeffrey Medeiros

L. Jeffrey Medeiros

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Carlos E. Bueso-Ramos

Carlos E. Bueso-Ramos

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

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Joseph D. Khoury

Corresponding Author

Joseph D. Khoury

Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA

Correspondence: Joseph D. Khoury, MD, Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, MS-072, Houston, Texas 77030, USA.

E-mail: [email protected]

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First published: 30 June 2015
Citations: 43

Summary

Bone marrow (BM) fibrosis is associated with poor prognosis in patients with de novo myelodysplastic syndromes (MDS). TP53 mutations and TP53 (p53) overexpression in MDS are also associated with poor patient outcomes. The prevalence and significance of TP53 mutations and TP53 overexpression in MDS with fibrosis are unknown. We studied 67 patients with de novo MDS demonstrating moderate to severe reticulin fibrosis (MDS-F). Expression of TP53 was evaluated in BM core biopsy specimens using dual-colour CD34/TP53 immunohistochemistry with computer-assisted image analysis. Mutation analysis was performed using next-generation sequencing, or Sanger sequencing methods. TP53 mutations were present in 47·1% of cases. TP53 mutation was significantly associated with TP53 expression (= 0·0294). High levels of TP53 expression (3 +  in ≥10% cells) were associated with higher BM blast counts (= 0·0149); alterations of chromosomes 5 (= 0·0009) or 7 (= 0·0141); complex karyotype (= 0·0002); high- and very-high risk IPSS-R groups (= 0·009); and TP53 mutations (P = 0·0003). High TP53 expression independently predicted shorter overall survival (OS) by multivariate analysis (P = <0·001). Expression of TP53 by CD34-positive cells was associated with shorter OS and leukaemia-free survival (P = 0·0428). TP53 overexpression is a predictor of poor outcome in patients with MDS-F.

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