This is an exploratory, ctDNA-guided, multi-stage clinical study designed to evaluate the clinical value of treatment decision-making based on circulating tumor DNA (ctDNA) variant allele frequency (VAF) dynamics in patients with HER2-negative metastatic breast cancer. All enrolled patients will receive antibody-drug conjugate (ADC) therapy for two cycles in Stage 1, with serial ctDNA assessments performed prior to Cycle 1 and Cycle 2. In Stage 2, patients without disease progression will be assigned to different treatment strategies based on the percentage reduction in mean ctDNA VAF. The study aims to assess whether ctDNA VAF dynamics can serve as an early biomarker to guide treatment intensification and improve clinical outcomes in metastatic breast cancer.
ADC
1 clinical trials involving this therapy/drug
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Descriptions are automatically translated with AI assistance. Always verify details in the original on ClinicalTrials.gov and consult your treating physician.
NCT07394218ClinicalTrials.gov ↗
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