This study examines circulating tumor DNA (ctDNA) as a biomarker for early detection of recurrence in high-risk patients, following treatment of primary melanoma. The hypothesis is that ctDNA can provide accurate detection of recurrence or metastasis, at the time of or earlier than current methods, leading to improved management and hopefully prognosis, based on earlier detection.
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Sensitivity of ctDNA for detection of metastatic disease
Timeframe: From enrollment to end of 5-year follow-up
Specificity of ctDNA for detection of metastatic disease
Timeframe: From enrollment to end of 5-year follow-up