Lung Cancer Clinical Trial
Official title:
Developing Novel Circulating Epigenetic Biomarkers for Early Detection of Lung Cancer
The investigators aim to identify novel circulating methylated biomarkers for early lung cancer detection as well as to develop new technologies that are clinically applicable with high sensitivity and specificity.
Lung cancer is the leading cause of cancer death, accounting for 2.09 million cases in 2018 worldwide. There is a huge demand globally for sensitive and reliable assays to intercept lung cancer at early stages when it can be cured. Past studies have shown that circulating cell-free tumor DNA (ctDNA) shed from tumor cells contains the same mutations and methylation patterns as the original tumor cells. Emerging evidence has indicated the presence of systemic immune dysregulation in cancer patients, and that tumor-reactive T cells carry a distinct molecular profile compared to other bystander cells. Thus, molecular abnormality of ctDNA and tumor-reactive T cells may be one of the early signs that hint the presence of malignancy, and it may serve as a promising target for development of blood-based assays in early lung cancer for its convenience and non-invasiveness as opposed to invasive tumor biopsy, or imaging-based methods that are limited by unsatisfactory sensitivity/specificity. The investigators aim to identify novel markers for early lung cancer detection as well as to develop new technologies that are clinically applicable with high sensitivity and specificity. The objectives of this proposal are multifaceted: (1) The investigators will generate genome-wide methylation atlas of circulating cell free DNA and of circulating T cells in lung cancer patients vs. non-cancer subjects. (2) The investigators will develop an enriched method to enhance the performance of multiplex droplet digital PCR (ddPCR) technology with increased sensitivity and decreased input DNA requirement. (Enriched methylation-specific droplet digital PCR, EMS-ddPCR) (3) The investigators will develop a single-cell, locus-specific DNA methylation detection system that is bisulfite-free and non-PCR-based. The system can be coupled with flow cytometry or mass cytometry to enable cell-type specific methylation detection. (single-cell, locus-specific methylation detection, scLSM-FACS) (4) The investigators will identify a novel methylation signature consisting of tumor-derived and immune-derived biomarkers for early detection of lung cancer. ;
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