ClinicalTrials.gg
Not yet recruitingNCT07931313Updated Nov 12, 2026

PDS Versus NACT-IDS in AI-Selected Advanced Epithelial Ovarian Cancer

A Phase 2/3 interventional study of Upfront cytoreductive surgery and Interval debulking surgery in Epithelial Ovarian Cancer, Fallopian Tube Cancers and Primary Peritoneal Cancer, sponsored by Shanghai Gynecologic Oncology Group. Not yet recruiting at 2 sites in China. Open to female participants aged 18 Years to 79 Years. Per ClinicalTrials.gov, last updated 2026-11-12.

Sponsored by Shanghai Gynecologic Oncology Group · Phase 2/3, Interventional, and Treatment

Updated Nov 12, 2026Newly registeredGo to Updates ↓
Phase
Phase 2/3
Study type
Interventional
Enrollment
534
Allocation
Randomized
Ages
18 Years to 79 Years
Sex
Female
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 71 studies in Carcinoma, Ovarian Epithelial with a site in China — 30 open to participants now, 37 under way, 12 of them phase 3. Carcinoma, Ovarian Epithelial · China.

Planned enrollment
9th of 53
534 · median 94
Started
2026
with 9 others
Phase 2/3
2 of 71
2 open now
Primary completion
2037-02
later than 36 of 36 live
Registered
71st of 71
by date
Lead sponsor
7 of 71
Shanghai Gynecologic Oncology Group

Among the 71 studies in Carcinoma, Ovarian Epithelial with a site in China, this one is the 9th largest by planned enrollment of the 53 interventional ones that give a count, is one of 10 that started in 2026, is one of 2 in phase 2/3, reaches primary completion later than 36 of the 36 other live ones, and was the 71st registered.

Carcinoma, Ovarian Epithelial

798 studies on the registry are indexed under Carcinoma, Ovarian Epithelial; 102 are open to participants now.

Browse Carcinoma, Ovarian Epithelial studies →

Open to participants now

30 of the 71 studies in Carcinoma, Ovarian Epithelial with a site in China are open now. Recruiting first, the newest first:

25 more — sign in →

All 30 open studies →

A study can be open while its sites in China have not opened yet or have stopped. Only those recruiting at a site in China →

Who these studies take

Of the 75 Carcinoma, Ovarian Epithelial studies recruiting now, 50 (67%) set no upper age limit and 12 (16%) stop at 75 or younger; 2 take children under 18; 4 take healthy volunteers.

This study: 18 Years to 79 Years · female · no healthy volunteers.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 71 studies in Carcinoma, Ovarian Epithelial with a site in China, or all of them as a file.
02

Study summary

This multicenter, open-label, randomized phase II/III trial will compare primary debulking surgery (PDS) with neoadjuvant chemotherapy followed by interval debulking surgery (NACT-IDS) in patients with newly diagnosed stage IIIC or IV epithelial ovarian, fallopian tube, or primary peritoneal cancer who are recommended for PDS by the MERITS clinical decision tool and are clinically eligible for either treatment strategy.

Read the detailed description

The optimal timing of cytoreductive surgery in advanced epithelial ovarian cancer remains uncertain. Earlier randomized trials did not clearly identify which patients benefit from PDS rather than NACT-IDS. Using data from 489 participants in the SUNNY trial, the Multi-Endpoint RMST Ensemble for Individualized Treatment Selection (MERITS) model was developed and internally evaluated in the previous SUNNY-AI trial (NCT06839157). The model uses seven pretreatment clinical variable groups: BRCA status, TNM stage, Eastern Cooperative Oncology Group performance status, histologic type, tumor burden, presence of omental metastasis, and age (≤65 vs >65 years). In internal cross-validation, MERITS recommended PDS for 78.1% of patients and achieved a concordance index of 0.63. The current study will prospectively evaluate the clinical utility of feature-based selection and determine whether PDS improves overall survival in the selected population.

All participants must be recommended for PDS by MERITS and judged clinically suitable for both PDS and NACT-IDS. A 20-participant randomized pioneer study will first assess feasibility and early safety. Formal phase II enrollment may begin if major protocol deviations are observed in no more than 4 of 20 participants, 30-day grade ≥3 postoperative complications in no more than 6, 30-day postoperative deaths in no more than 1, at least 18 undergo the planned debulking procedure, and all operated participants have ascertainable 30-day safety outcomes.

The randomized phase II will enroll 100 participants. Phase II will be assessed after the 100th participant has completed 18 months of follow-up and surgical safety data have been verified. The phase II decision is exploratory and does not establish confirmatory noninferiority. The phase III will enroll 414 participants. The final phase III analysis will be performed after at least 247 deaths and at least 60 months of follow-up for the last phase III participant. Overall survival will be compared using a stratified log-rank test, with a stratified Cox model estimating the hazard ratio for PDS versus NACT-IDS and its two-sided 95% confidence interval. Stratification factors are TNM stage, cPCI tumor burden, and BRCA status. PDS will be considered superior only if the estimated hazard ratio is \<1 and the two-sided stratified log-rank P value is \<0.05.

03

Conditions studied

  • Epithelial Ovarian Cancer
  • Fallopian Tube Cancers
  • Primary Peritoneal Cancer

Keywords

  • Advanced Ovarian Cancer
  • Primary Debulking Surgery
  • Neoadjuvant Chemotherapy
  • Interval Debulking Surgery
  • Feature-Based Decision Model
04

Who can participate

Ages eligible
18 Years to 79 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Female, aged ≥18 and \<80 years.
  • Newly diagnosed, confirmed stage IIIC or IV primary epithelial ovarian cancer, fallopian tube cancer, or primary peritoneal carcinoma. Diagnostic surgery, core-needle , or a pleural/ascitic fluid cell block may be used for confirmation as specified in the protocol.
  • PET-CT based TNM clinical stage and cPCI tumor burden determined by multidisciplinary assessment.
  • performance status 0-2.
  • Frailty index \<0.15.
  • Known BRCA1/2 status.
  • MERITS recommendation for PDS and clinical eligibility for both randomized treatment strategies.
  • Adequate bone marrow, renal, hepatic, and nutritional function to undergo chemotherapy and surgery: white blood cell count >3,000/µL; ≥1,500/µL; ≥100,000/µL; ≥9 g/dL; serum creatinine \<1.25 × or ≥60 mL/min; total \<1.25 × upper limit of normal; and AST \<2.5 × upper limit of normal; and serum albumin >3.5 g/dL.
  • Ability and willingness to comply with protocol treatment and scheduled follow-up.
  • Written .

Exclusion criteria

Exclusion Criteria:

  • Low-grade ovarian carcinoma, mucinous ovarian carcinoma, or clear cell carcinoma.
  • Non-epithelial ovarian or borderline ovarian tumor.
  • Prior chemotherapy, targeted therapy, immunotherapy, or other systemic anticancer therapy for the current disease.
  • Concurrent or uncontrolled malignancy diagnosed within the previous 5 years.
  • Severe systemic disease precluding surgery, including poorly controlled diabetes or hypertension, , implanted cardiac pacemaker with comorbidity, moderately reduced cardiac , end-stage renal disease, myocardial infarction, cerebrovascular accident, uncontrolled infection, coagulation disorder, or another condition judged to make surgery or chemotherapy unsafe.
  • Inability to complete the planned treatment course or follow-up.
  • Religious, psychological, or other circumstances that could interfere with , protocol adherence, or follow-up.
Terms in these criteria, in plain language(16)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Adjuvant and neoadjuvant

Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
534 participants (estimated)

Study arms

  • Experimental
    Primary Debulking Surgery

    Maximal-effort cytoreductive surgery will be completed within 3 weeks after pathologic diagnosis, followed by 6 cycles of first-line chemotherapy. The interval from surgery to the first postoperative chemotherapy cycle should not exceed 8 weeks unless medically necessary.

    Procedure: Upfront cytoreductive surgery · Drug: Platinum-based chemotherapy

  • Active comparator
    Neoadjuvant Chemotherapy Followed by Interval Debulking Surgery

    Participants will receive 3 cycles of neoadjuvant chemotherapy, undergo interval debulking surgery with maximal-effort cytoreduction, and then receive 3 additional cycles of chemotherapy. The interval from surgery to the first postoperative chemotherapy cycle should not exceed 8 weeks unless medically necessary.

    Procedure: Interval debulking surgery · Drug: Platinum-based chemotherapy

Interventions

  • ProcedureUpfront cytoreductive surgery

    Upfront cytoreductive surgery with a maximum cytoreduction, then followed by 6 cycles of Paclitaxel 175mg/m2 or Docetaxel 60-75 mg/m2 plus Carboplatin AUC (area under the curve) 5

  • ProcedureInterval debulking surgery

    3 cycles of Paclitaxel 175mg/m2 or Docetaxel 60-75 mg/m2 plus Carboplatin AUC (area under the curve) 5, Interval debulking surgery with a maximal cytoreduction of complete gross resection, then followed by another 3 cycles of chemotherapy

  • DrugPlatinum-based chemotherapy

    Paclitaxel 175mg/m2 or Docetaxel 60-75 mg/m2 plus Carboplatin AUC (area under the curve) 5

06

What researchers measure

Primary outcomes

  1. Overall survival

    Time from randomization to death from any cause; participants alive will be censored at the last date known alive.

    Time frame: 60 months since randomization

Secondary outcomes

  1. Progression-free survival

    Time from randomization to first disease progression or death from any cause, whichever occurs first.

    Time frame: 60 months since randomization

  2. Postoperative complications within 30 days after surgery

    The surgical complications will be evaluated at 30-day after upfront cytoreductive surgery or interval debulking surgery, graded using CTCAE version 5.03

    Time frame: Through 30 days after the planned debulking procedure

  3. Quality of life assessments

    Quality of life measured with EORTC QLQ-C30

    Time frame: At baseline, 6 months, 12 months, and 5 years after randomization.

  4. Pattern of first relapse

    The number and sites of the first relapse, including pelvic, abdominal, retroperitoneal lymph nodes, distant metastases and ascites will be compared between the two groups.

    Time frame: 60 months since randomization

  5. The rate of 3-year progression-free survival

    The rate of the patients without progression or recurrence or death at 3 years.

    Time frame: 36 months since randomization

  6. The rate of 5-year progression-free survival

    The rate of the patients without progression or recurrence or death at 5 years.

    Time frame: 60 months since randomization

07

Study locations

2 sites
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Dec 2026; primary completion for Feb 2037, 121 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 6, 2026
First posted
Nov 12, 2026
StartEst.
Dec 31, 2026
Primary completionEst.
Feb 28, 2037
CompletionEst.
Feb 28, 2037
Last update
Nov 12, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Registered
First appeared on the registry. No changes since
Nov 12, 2026
Show all 1 update
  1. Nov 12, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07931313
Lead sponsor
Shanghai Gynecologic Oncology Group
Responsible party
Sponsor
First posted
Nov 12, 2026
Start date
Dec 31, 2026 (estimated)
Primary completion
Feb 28, 2037 (estimated)
Completion
Feb 28, 2037 (estimated)
Last update
Nov 12, 2026

Study contacts

Yulian Chen, MD
Contact
emma_serendipity@163.com
86 21 64041990

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Nov 2026. You cannot join it, but the record below documents what was studied.

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