Evaluating the Prognostic Value of MRD Detection in Ovarian Cancer Patients with Low CA125 Levels

A Study for Assessing the Value of Minimal Residual Disease Detection in Disease Monitoring of CA125 Non-sensitive Ovarian Cancer Patients

Observational West China Second University Hospital · NCT06182917

This study is testing if checking for tiny amounts of cancer DNA in the blood can help predict the risk of ovarian cancer coming back in patients with low CA125 levels.

Quick facts

Study typeObservational
Enrollment35 (estimated)
SexFemale
SponsorWest China Second University Hospital Academic / other
Locations1 site (Chengdu, Sichuan)
Trial IDNCT06182917 on ClinicalTrials.gov

What this trial studies

This observational study investigates the prognostic significance of minimal residual disease (MRD) detection in patients with ovarian cancer who have low levels of the tumor marker CA125. It aims to assess the risk of recurrence in these patients by utilizing liquid biopsy techniques to detect circulating tumor DNA (ctDNA). The study focuses on patients who have been pathologically confirmed to have ovarian cancer and have a CA125 level of 200 U/ml or less at diagnosis or recurrence. By combining MRD detection with traditional monitoring methods, the study seeks to improve risk assessment for this specific patient population.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18-75 with pathologically confirmed ovarian cancer and low CA125 levels.

Not a fit: Patients who are unable to provide sufficient tissue or blood samples for analysis or those with other significant health issues may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved monitoring and management strategies for ovarian cancer patients who are currently underserved by traditional CA125 testing.

How similar studies have performed: While the use of MRD detection in cancer prognosis is an emerging field, this specific approach in CA125 non-sensitive ovarian cancer patients is relatively novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18-75;
* Pathologically confirmed ovarian cancer;
* CA125 ≤200U/ml at first diagnosis or recurrence;
* Physical condition score PS ≤ 2 points;
* Enough tumor samples for WES detection;
* Patients and their families can understand and are willing to participate in this study and provide written informed consent.

Exclusion Criteria:

* Patients unable to provide sufficient tissue / blood samples for research detection;
* Pregnant or lactating women;
* Other diseases considered by the research doctor to affect the prognosis and survival;

Where this trial is running

Chengdu, Sichuan

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Ovarian Cancer
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.