The goal of this observational study or is to explore the correlation between dynamic changes in postoperative circulating tumor DNA (ctDNA) and recurrence risk using a novel, tumor-informed ctDNA detection technique, thus laying the foundation for further promoting ctDNA detection to guide postoperative adjuvant therapy decisions. This study focuses on patients with esophageal squamous cell carcinoma who did not achieve pCR following neoadjuvant therapy combined with surgical resection. The main question it aims to answer is:
Is there a correlation between postoperative ctDNA changes and tumor recurrence?
Participants will be asked to undergo postoperative ctDNA detection.
Eligibility
Sex
ALL
Min age
—
Max age
—
Healthy volunteers
No
Inclusion Criteria:
1. Operable locally advanced esophageal squamous cell carcinoma;
2. Have received neoadjuvant chemoradiotherapy ± immunotherapy and have not achieved pCR after R0 resection;
3. Can tolerate postoperative adjuvant immunotherapy;
4. Sufficient baseline tumor tissue and blood samples available for NGS testing;
5. Eastern Cooperative Oncology Group (ECOG) performance status score of 0-1;
6. Consents to and is capable of complying with the scheduled study visits, treatment plans, laboratory tests, and other study procedures
7. Expected postoperative survival time of ≥ 6 months.
Exclusion Criteria:
1. Concurrent other malignant tumors;
2. Lack of a detailed histopathological diagnostic report for determining the nature of the lesion;
3. Severe and/or poorly controlled medical conditions that, in the investigator's judgment, could affect participation or interfere with study results;
4. Any social/psychological issues that, in the investigator's judgment, make the patient unsuitable for participation;
5. Unable to undergo long-term, regular postoperative follow-up at the current medical institution;
6. Unwilling or unable to comply with the study protocol.
Primary outcome measure(s)
Correlation between the recurrence of patients and the quantitative measurement of circulating tumor DNA (ctDNA) concentration. — 3 years Correlation were evaluated based on the sensitivity and specificity of ctDNA in predicting recurrence.The sensitivity and specificity were determined by evaluating the association between positive ctDNA and tumor recurrence.
Trial sites (1)
Facility
City
Region
Status
Sun Yat-sen University Cancer Center
Guangzhou
Guangdong
Recruiting
More Sun Yat-Sen University Cancer Center trials in China
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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