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Leuk Lymphoma. 2018 Dec;59(12):2929-2940. doi: 10.1080/10428194.2018.1459615. Epub 2018 May 30.

EVI1 expression predicts outcome in higher-risk myelodysplastic syndrome patients.

Author information

1
a Department of Hematology, Key Laboratory of Cancer Prevention and Therapy , Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Clinical Research Center for Cancer , Tianjin , PR China.
2
b Department of Oncology , Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin , PR China.
3
c Department of Hematology , First Affiliated Hospital of Chongqing Medical University , Chongqing , PR China.
4
d Department of Hematology , The Union Hospital of Tongji Medical College of Huazhong University of Science and Technology , Wuhan , PR China.
5
e Department of Hematology , Tianjin Medical University General Hospital , Tianjin , PR China.

Abstract

The clinical impact of ecotropic viral integration site 1 (EVI1) expression status in myelodysplastic syndromes (MDS) is poorly defined. Here, we investigate the expression of EVI1 and its associated clinical and cytogenetic characteristics in 398 MDS patients. High EVI1 levels (EVI1high) were found more frequently in Higher-risk MDS patients. Other cytogenetic abnormalities over-represented among EVI1high cases included complex karyotype, del(5q), monosomy 7, and 12q-compared with EVI1low MDS. No specific gene mutation was found different between EVI1high and EVI1low patients, except for a high proportion of TP53 mutation in the EVI1high group. For EVIhigh patients, mean number of gene mutations was higher than that in EVI1low patients. No definite correlation was found between EVI1 expression and MDS prognosis. However, for Higher-risk MDS patients, EVI1high patients have poorer survival rate compared with EVI1low patients. Moreover, EVI1high was an adverse prognostic marker for MDS with excess blasts subtype. The addition of EVI1 could deteriorate the survival of MDS patients with chromosome 3 abnormalities, del(5q-) or monosomy 7. Taken together, EVI1 overexpression is a poor prognostic marker for higher-risk MDS group and could be included in risk stratification for MDS patients.

KEYWORDS:

EVI1; higher-risk; myelodysplastic syndrome; prognostic

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