Elevated plasma big ET-1 is associated with distant failure in patients with advanced-stage nasopharyngeal carcinoma

Cancer
Hai-Qiang MaiMing-Huang Hong

Abstract

Endothelin-1 (ET-1) is a potent vasoactive peptide and a hypoxia-inducible angiogenic growth factor associated with the development and spread of solid tumors. The clinical significance of plasma big ET-1 in patients with advanced-stage nasopharyngeal carcinoma (NPC) is not known. Pretreatment plasma big ET-1 levels were measured in 62 patients with advanced-stage NPC using a sandwich enzyme-linked immunoassay and compared with the levels from a control group (n = 19 participants). The median pretreatment plasma big ET-1 level in patients with advanced-stage NPC was 4.6 pg/mL (range, 1.9-15.2 pg/mL) and was significantly elevated compared with median plasma big ET-1 levels in healthy controls, 2.6 pg/mL (1.6-4.5 pg/mL) (P < .001). Using the upper limit (4.5 pg/mL) of control subjects as the cut-off value, plasma big ET-1 was < or = 4.5 pg/mL in 29 (46.8%) patients and > 4.5 pg/mL in 33 (53.2%) patients. A pretreatment plasma big ET-1 level > 4.5 pg/mL was associated with a significantly poorer 2-year distant metastasis-free survival rate (56.7% vs. 81.1%, P = .031). Multivariate analysis showed that N classification (hazard ratio [HR], 2.416; 95% confidence interval [CI], 1.071-5.447; P = .034) and pretreatment plasma big ET-1 ...Continue Reading

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Citations

Mar 2, 2013·Indian Journal of Hematology & Blood Transfusion : an Official Journal of Indian Society of Hematology and Blood Transfusion·Göksel LeblebisatanYurdanur Kilinç
Jan 4, 2007·Molecular Cancer·William Chi-Shing Cho
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