Early Prediction of Colorectal Cancer Recurrence Through a Blood Test
- 등록일 : 2025-07-30
2025년 6월 미국 시애틀에서 열린 '2025 암 불평등 해소 서밋(Summit on Cancer Health Disparities)'에서 Fred Hutchinson 암 연구 센터의 Stacey Cohen 박사(워싱턴대 종양내과 부교수)는 대장암 치료 전략 수립에 있어 순환종양 DNA(ctDNA) 기반 미세잔존암(MRD) 검사의 최신 연구 결과와 임상 적용 가능성을 발표했다. 이 서밋은 미국에서 매년 열리는 종양학 분야의 대표 학술 포럼으로 암 치료 형평성과 접근성 향상을 주제로 한다.

At the 2025 Summit on Cancer Health Disparities in Seattle, Dr. Stacey Cohen of Fred Hutch presented new evidence supporting ctDNA-based MRD testing for colorectal cancer. She highlighted ctDNA as a short half-life biomarker that sensitively reflects disease status, especially in colorectal cancer where ctDNA levels are relatively high.
Retrospective studies consistently show that postoperative ctDNA positivity predicts recurrence, while negative results indicate favorable outcomes. In the DYNAMIC trial, giving adjuvant therapy only to ctDNA-positive Stage II patients achieved recurrence-free survival comparable to standard treatment.
Ongoing CIRCULATE-North America research is evaluating de-escalated treatment for ctDNA-negative and intensified therapy for ctDNA-positive Stage III patients. Observational studies, including GALAXY, report that ctDNA detects relapse roughly 5.5 months earlier than imaging.
Guardant Reveal, a tissue-free methylation-based MRD assay, is being used in U.S. clinics for treatment decisions. Dow Biomedica, Guardant’s partner in Korea, expects blood-based MRD testing to support earlier detection and reduce treatment burden for Korean patients.

