Liquid Biopsies in Head and Neck Cancer: Current State and Future Challenges.

Cancers (Basel) · 2021 · PMC8070729 · PMID 33919778

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a clear trendno p-value reported

By comparing patients with metastatic cancer versus nonmetastatic cancer patients, there was a clear trend with regards to metastatic stage of disease and increased ctDNA quantity [ 48 ].

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