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High serum concentration of YKL-40 is associated with short survival in patients with acute myeloid leukemia.

Authors: Bergmann, OJ  Johansen, JS  Klausen, TW  Mylin, AK  Kristensen, JS  Kjeldsen, E  Johnsen, HE 
Citation: Bergmann OJ, etal., Clin Cancer Res. 2005 Dec 15;11(24 Pt 1):8644-52.
Pubmed: (View Article at PubMed) PMID:16361549
DOI: Full-text: DOI:10.1158/1078-0432.CCR-05-1317

PURPOSE: YKL-40 is secreted by cancer cells, macrophages, and neutrophils. It may be a growth or differentiation factor, play a role in angiogenesis, or protect against apoptosis. High serum YKL-40 is associated with poor prognosis in solid carcinomas. The aim was to examine serum YKL-40 in patients with acute myeloid leukemia (AML). EXPERIMENTAL DESIGN: YKL-40 was measured by ELISA in serum from 77 patients recently diagnosed with AML before and during the first month of chemotherapy. RESULTS: Forty (52%) of the AML patients had elevated serum YKL-40 (compared with age-matched healthy subjects) and their survival was shorter than in patients with normal serum YKL-40 (median, 128 days; interquartile range, 18-629 days versus 386 days; interquartile range, 180-901; P=0.018 Mann-Whitney test). Univariate analysis of serum YKL-40 (logarithmically transformed and treated as a continuous covariate) showed significant association with survival within the first month after start of chemotherapy [hazard ratio (HR), 1.7; 95% confidence interval (CI), 1.2-2.4; P=0.002], first 12 months (HR, 1.6; 95% CI, 1.2-2.0; P=0.0002), and overall survival (HR, 1.3; 95% CI, 1.1-1.6; P=0.003). Multivariate Cox analysis showed that serum YKL-40 was an independent prognostic variable for survival (first month: HR, 1.7; P=0.011; 12 months: HR, 1.6; P=0.0002; overall survival: HR, 1.4; P=0.002). High serum YKL-40 at start of chemotherapy was a risk factor for pneumonia within the first month, and serum YKL-40 increased (P=0.002) at time of pneumonia and was unchanged in patients without infections. CONCLUSIONS: Serum YKL-40 is a prognostic biomarker of survival in AML patients. Its role in AML and infections needs to be determined.

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RGD Object Information
RGD ID: 4892644
Created: 2011-02-28
Species: All species
Last Modified: 2011-02-28
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.