Journal
LUNG CANCER
Volume 41, Issue 2, Pages 171-177Publisher
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/S0169-5002(03)00196-X
Keywords
lung cancer; syndecan; prognosis; cisplatin; carboplatin
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Syndecan-1 is a multifunctional transmembrane heparan sulphate proteoglycan (HSPG) that is present on a variety of cell types. The extracellular syndecan domains can be shed from the cell surface in a highly regulated process called ectodomain shedding. We studied the influence of soluble syndecan-1 on outcome in 88 small cell lung cancer (SCLC) patients treated within the context of two randomised clinical trials with platinum-based therapy. Serum syndecan-1 concentrations were determined using enzyme-linked immunosorbent assay (ELISA) from sera taken prior to initiation of chemotherapy. Patients with the serum syndecan-1 Level within the highest tertile (> 212 mug/l) had only 38% 1-year and 3% 2-year survival, whereas 58% of those with a lower serum level survived for 1 year and 25% for 2 years following the diagnosis (P = 0.0034). A high serum syndecan-1 level (> 212 mug/l) was associated with a high pretreatment lactate dehydrogenase (LDH) level (P = 0.0024) and a poor Karnofsky's performance status (P = 0.021), but not with the clinical stage or the presence of distant metastases at diagnosis. A high serum syndecan-1 level had independent influence on survival also in a multivariate analysis (the relative risk, RR, 1.68; 95% CI, 1.02-2.77; P = 0.044) together with the clinical stage (RR, 1.72; 95% CI, 1.05-2.82; P = 0.032). We conclude that high pretreatment serum syndecan-1 level is associated with poor prognosis in SCLC treated with platinum-based chemotherapy. (C) 2003 Elsevier Science Ireland Ltd. All rights reserved.
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