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Abstract 3691: Collagen 1 fiber content may predict for recurrence in non-small cell lung cancer

Non-small cell lung carcinoma (NSCLC) comprises 85% of all lung cancers. Approximately 30-50% of NSCLC recur despite curative resection. There is a major unmet need to identify NSCLC that are likely to recur so that these patients may be treated with more aggressive therapies. Collagen 1 (Col1) fibers are a major structural component of the extracellular matrix (ECM) of tumors. While increased Col1 fibers have been associated with increased metastasis in breast cancer, the role of Col1 in NSCLC and its relationship to recurrence has not been previously examined. We performed a blinded second harmonic generation (SHG) microscopy study on tumor tissue obtained from 5 patients with nonrecurrent NSCLC and 5 patients with recurrent NSCLC. Col1 fibers were detected with SHG microscopy that detects an intrinsic signal derived from the noncentrosymmetric molecular structure of Col1 fibers. SHG microscopy of tumor regions was performed on the HE 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 3691.