Brazilian Journal of Medical and Biological Research (May 2018)

Detection of sputum cofilin-1 as indicator of malignancy

  • M.P. Rangel,
  • L. Antonangelo,
  • M.M.P. Acencio,
  • C.S. Faria,
  • V.K. de Sá,
  • P.S. Leão,
  • C. Farhat,
  • A.T. Fabro,
  • A. Longatto Filho,
  • R.M. Reis,
  • T. Takagaki,
  • V.L. Capelozzi

DOI
https://doi.org/10.1590/1414-431x20187138
Journal volume & issue
Vol. 51, no. 8

Abstract

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Cofilin-1 (CFL1), a small protein of 18 kDa, has been studied as a biomarker due to its involvement in tumor cell migration and invasion. Our aim was to evaluate CFL1 as an indicator of malignancy and aggressiveness in sputum samples. CFL1 was analyzed by ELISA immunoassay in the sputum of 73 lung cancer patients, 13 cancer-free patients, and 6 healthy volunteers. Statistical analyses included ANOVA, ROC curves, Spearman correlation, and logistic regression. Sputum CFL1 levels were increased in cancer patients compared to cancer-free patients and volunteers (P1.475 pg/mL showed augmented chance of death, suggesting lung cancer aggressiveness. CFL1 presented diagnostic value in detecting lung cancer and was associated to tumor aggressiveness.

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