To compare symptoms and blood test results prior to cancer diagnosis in individuals who developed lung cancer and those who did not. Nested case-control study, lung cancer patients were matched to up four controls with no record of cancer. Differences in symptoms and blood test results were investigated in the 2-year period prior to diagnosis. 26,379 lung cancer patients were matched to 92,125 controls. Elevated C-reactive protein (CRP) was independently predictive of lung cancer at every 2-month interval 12 months prior to diagnosis. Elevated CRP in conjunction with at least one symptom was associated with greater than fourfold higher odds of lung cancer. CRP may be a prediagnostic marker for lung cancer, and when present with other symptoms could facilitate the investigation of high-risk individuals.

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http://dx.doi.org/10.2217/fon-2019-0442DOI Listing

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