Soluble angiopoietin-2/sTie2 receptor ratio is an independent prognostic marker in adult acute myeloid leukemia.

Angiogenesis is the formation of new blood vessels from preexisting one. The angiopoietins act a central role in these process. The aim of the present study is to the assess the impact of the circulating levels of angiopoietin-1 (Angi-1), Angiopoietin-2 (Angi-2), soluble Tie2 receptor (sTie2), and calculated Angi-2/sTie2 ratio on overall survival in 71 acute myeloid leukemia patients and 19 normal controls.
Ang-2, and calculated angi-2/sTie values were significantly higher in AML patients as compared to healthy volunteer (P= 0.002, 0.015 respectively) on the other hand Angi-1 was not significantly different in patients and control.
In univariate Cox proportional hazards model Angi-2, sTie2, angi-2/sTie2 ratio were predictive of poor survival. In multivariate analysis the calculated angi-2/sTie2 ratio is independent prognostic factor, with relative risk of 3.939, with 95% confidence interval 0.002-0.001.
The calculated angiopoietin-2/sTie2 ratio represent an independent prognostic factor in AML and its value should be considered when considering anti angiogenic therapy.
AuthorsSalah Aref, Nadia El Menshawy, Emaad Azmy, Mohamed El-Refaie
JournalIndian journal of hematology & blood transfusion : an official journal of Indian Society of Hematology and Blood Transfusion (Indian J Hematol Blood Transfus) Vol. 25 Issue 1 Pg. 17-22 (Mar 2009) ISSN: 0971-4502 [Print] India
PMID23100966 (Publication Type: Journal Article)

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