Abstract
Liquid biopsy has played a unique role in long-term surveillance of brain metastasis in non-small cell lung cancer (NSCLC), due to the inaccessibility of solid metastatic biopsies. T cell-mediated immunity is critical in the oncogenesis and metastasis of NSCLC, and sequencing in T cell receptor (TCR) provides a robust method to quantify T cell diversity. Therefore, we aimed to explore the alteration of TCR through liquid biopsy before and after radiotherapy of NSCLC brain metastases.
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