Use of Plasma ctDNA Methylation Haplotypes in Detecting Local Residual or Lymph Node Metastasis

Fudan University

Status

Unknown

Conditions

Lymph Node Metastases

Colorectal Cancer

Treatments

Diagnostic Test: Next-generation sequencing (NGS)

Study type

Observational

Funder types

Other

Identifiers

NCT03868215

FDLNM-CGX

Details and patient eligibility

About

This is a prospective, clinical study. This study is to evaluate the sensitivity of plasma ctDNA methylation haplotypes in detecting local residual or lymph node metastasis.

Full description

Colorectal cancer (CRC) is the third most common cancer worldwide, the second deadliest cancer in the United States. DNA methylation is a commonly used biomarker for non-invasive CRC detection in plasma. The low sensitivity of blood-based tests is due to several limitations of detecting ctDNA in early-stage cancer. We developed and validated a high-throughput methylation-based blood test highly sensitive for colorectal cancer and precancerous lesions. This previously established colorectal tumor-specific plasma ctDNA methylation markers (diagnostic model established by next-generation sequencing of 2181 gene loci methylation) had a high sensitivity in CRC patients and a high specificity in healthy individuals in a large retrospective sample study. This prospective, clinical study is to further evaluate the sensitivity of plasma ctDNA methylation haplotypes in detecting local residual or lymph node metastasis.

Enrollment

100 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Patients with endoscopically removed malignant polyps.
Male or female ≥ 18 years of age on the day of signing informed consent.
Patients who received surgical resection following removal of malignant polyps by colonoscopy.
Patients must have a performance status of ≤1 on the ECOG Performance Scale.
Written informed consent must be obtained from patient or patient's legal representative and ability for patient to comply with the requirements of the study

Exclusion criteria

Patients received adjuvant treatment prior to the surgical resection.
Patients received blood transfusion two weeks before or during the surgical resection.
Patients with unresected advanced colorectal adenoma.
Patients who are positive for Human Immunodeficiency Virus (HIV), Hepatitis B or Hepatitis C.
Patients who are pregnant.
Patients who are alcoholic or drug abusers.
Patients with a history or current evidence of any condition or abnormality that might confound the results of the study, interfere with the patient's participation for the full duration of the study, or is not in the best interest of the patient to participate, in the opinion of the Investigator.