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"D (double) - O"study: A prospective observational study on the use of exosome technology based OCS (Ovarian Cancer Score) combined with O-RADS (Ovarian-Adnexal Reporting and Data System) for differential diagnosis benign from malignant in adnexal masses of unknown nature identified by TVU (Transvaginal Ultrasound).

"D (double) - O"study: A prospective observational study on the use of exosome technology based OCS (Ovarian Cancer Score) combined with O-RADS (Ovarian-Adnexal Reporting and Data System) for differential diagnosis benign from malignant in adnexal masses of unknown nature identified by TVU (Transvaginal Ultrasound).

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2500109256
Enrollment
Unknown
Registered
2025-09-16
Start date
2025-09-30
Completion date
Unknown
Last updated
2025-09-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

adnexal mass

Interventions

Gold Standard: pathological diagnosis. If no surgery is performed by the end of the one-year follow-up period, the final diagnosis will be completed via transvaginal ultrasound (TVU) reexamination.
Index test:Ovarian Cancer Score(OCS)

Sponsors

The Obstetrics & Gynecology Hospital of Fudan University
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1.Female aged >= 18 years; 2.Transvaginal ultrasound (TVU) indicates adnexal masses of unknown nature (O-RADS Category 3 + 4), and the masses are presumed to be of gynecological origin; 3.Patients who do not meet the surgical indications agree to receive follow-up observation for one year; 4.Sufficient samples are available for serological marker testing; 5.oluntarily participate in this study and sign the informed consent form.

Exclusion criteria

Exclusion criteria: 1.Pregnant and lactating women; 2.Cysts considered obviously physiological with a maximum diameter of less than 3 cm do not meet the inclusion criteria; 3.Patients diagnosed with ovarian cancer who have undergone surgery and obtained histopathological examination results; 4.Patients with recurrent ovarian cancer as confirmed by researchers, or ovarian cancer patients who have received chemotherapy and/or surgical treatment; 5.Patients who have received chemotherapy or pelvic radiotherapy within 6 months before sample collection; 6.Patients with other primary malignant tumors; 7.Patients with contraindications to surgical evaluation and those for whom ovarian pathology or surgical pathology information cannot be obtained; 8.Samples that do not meet the collection and storage requirements for the reagents used in the evaluation; 9.Contaminated or suspected contaminated samples; 10.Samples with missing, incomplete, or untraceable clinical data of the corresponding patients; 11.Patients with severe systemic diseases; 12.Patients with ovarian endometrioid cysts or inflammatory cysts (e.g., tubo-ovarian abscesses) clearly diagnosed by ultrasound; 13.Patients with pathologically confirmed non-epithelial ovarian malignant tumors (e.g., sarcomas, germ cell tumors) after surgery. Note: If imaging suggests a non-epithelial origin but postoperative pathology confirms epithelial ovarian cancer, the patient will still be included in the analysis; if postoperative pathology confirms a non-epithelial malignant tumor, the patient will be excluded.

Design outcomes

Primary

MeasureTime frame
Sensitivity;Specificity;Receiver Operating Characteristic Curve;

Secondary

MeasureTime frame
Positive Predictive Value;Negative Predictive Value;

Countries

China

Contacts

Public ContactMo Chen

The Obstetrics & Gynecology Hospital of Fudan University

chenmo_nicy@163.com+86 150 0216 4790

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026