Clinical trial Recruiting at 103 sites Phase 3 Interventional Ages 20 and up Women only

Comparing chemotherapy and observation for early-stage ovarian cancer after surgery

Official title: Randomized Phase III Trial of the Need for Adjuvant Chemotherapy in Stage I Epithelial Ovarian Cancer After Comprehensive Staging Surgery

Run by Japanese Gynecologic Oncology Group · NCT04063527 · Data updated 2026-11-12

This study is testing whether giving chemotherapy after surgery helps women with early-stage ovarian cancer live longer compared to just monitoring their condition.

More Epithelial Ovarian Cancer trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages20 Years and up
SexWomen only
Enrollment360 (estimated)
SponsorJapanese Gynecologic Oncology Group
Academic / other
Drugs / interventionschemotherapy, radiation
Locations103 sites (Nagakute-shi, Aichi-ken and 102 other locations)
StatusRecruiting
StartedJuly 20, 2012
Main results expectedOctober 1, 2029
Study endsFebruary 1, 2030
Registry record updatedAugust 30, 2019
Trial IDNCT04063527 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include patients diagnosed with histopathologically confirmed stage I epithelial ovarian cancer who have undergone comprehensive staging surgery.

Probably not a fit

Patients with advanced-stage ovarian cancer or those who have not undergone the required surgical procedures may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This phase III trial aims to evaluate the overall survival of patients with stage I epithelial ovarian cancer who have undergone comprehensive staging surgery. Participants will be randomly assigned to receive either adjuvant chemotherapy or be placed in an observation group. The chemotherapy regimen may include combinations of Paclitaxel and Carboplatin or Docetaxel and Carboplatin, with treatment cycles determined by the participating facility's policy. The study will also consider various histologic types and staging factors to ensure appropriate patient stratification.

Why it matters

Potential benefit: If successful, this study could provide insights into the effectiveness of adjuvant chemotherapy in improving survival rates for patients with early-stage ovarian cancer.

How similar studies have gone: Previous studies have shown promising results with adjuvant chemotherapy in ovarian cancer, making this approach both relevant and potentially impactful.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Patients with a diagnosis of histopathologically epithelial ovarian cancer
2. FIGO Stages Ia(Grade2/3, clear cell carcinoma), Ib(Grade2/3, clear cell carcinoma) and Ic(b)(all degree of differentiation and all histologic type)
3. Patients with a diagnosis of advanced stage by comprehensive staging or restaging laparotomy.
4. Patients who received comprehensive staging surgery (basic surgical techniques (total hysterectomy, bilateral salpingo-oophorectomy, and omentectomy) as well as peritoneal cytology, multiple biopsies of the peritoneum (\[Peritoneal biopsy\] see details below), retroperitoneal lymph node dissection (see details below \[Retroperitoneal lymph node dissection\]).

   However, for the following cases, it is eligible as a condition to record on the official document.
   * Peritoneal biopsy: peritoneal metastasis is not recognized by macroscopic and palpation in the stipulated site, and the case that biopsy has not been performed.
   * Retroperitoneal lymph node dissection: the case that lymph nodes of the stipulated range has been dissected however the prescribed number has not been reached.
5. Age: 20 or older
6. Performance status (PS):0-1
7. Case with initial therapy for postoperative primary lesion
8. Patient possible to receive the first study treatment within 8 weeks after the comprehensive staging surgery
9. Reasonable organ function
10. Patient must have signed informed consent.

Exclusion Criteria:

1. FIGO Stages Ic(a), Ic(1) and Ic(2)
2. Patients containing sarcoma elements
3. Patients with any signs of interstitial pneumonia or pulmonary fibrosis by chest radiography and CT
4. Patients with serious complications
5. Patients with active infection
6. Patients with intestinal paralysis or intestinal obstruction
7. Patients who have a synchronous malignancy or who have been progression-free less than 5 years for a metachronous malignancy
8. Patients with previous chemotherapy or radiation therapy
9. Patients with serious drug hypersensitivity
10. Patients with peripheral motor/sensory neuropathy \[grade2,3,4 Common Terminology Criteria for Adverse Events (CTCAE) 4.0\]
11. Patients who have had a hypersensitivity reaction to polyoxyethylated or hydrogenated castor oil
12. Patients with positive HBsAg. Patients with more than 2.1 log/copies ml based on fixed Hepatitis B virus (HBV)-DNA who are positive with either antigen-positive Hepatitis B (HBs), anti-hepatitis B core antigen or anti-hepatitis B surface antigen.
13. Patients who are inappropriate to enter this study with any safety reasons, judged by the treating physician

Where it's running

  • Aichi Medical University Hospital
    Nagakute-shi, Aichi-ken, Japan
    Recruiting
  • Tosei General Hospital
    Seto-shi, Aichi-ken, Japan
    Recruiting
  • Fujita Health University Hospital
    Toyoake-shi, Aichi-ken, Japan
    Recruiting
  • Hirosaki University School of Medicine & Hospital
    Hirosaki-shi, Aomori, Japan
    Recruiting
  • The Jikei University School of Medicine Kashiwa Hospital
    Kashiwa-shi, Chiba, Japan
    Recruiting
  • National Cancer Center Hospital East
    Kashiwa-shi, Chiba, Japan
    Recruiting
Show 44 more locations
  • Ehime University Hospital
    Onsen-gun, Ehime, Japan
    Recruiting
  • Kyusyu Medical Center
    Fukuoka, Fukuoka, Japan
    Recruiting
  • Kyusyu Cancer Center
    Fukuoka, Fukuoka, Japan
    Recruiting
  • Kyushu University Hospital
    Fukuoka, Fukuoka, Japan
    Recruiting
  • Kurume University Hospital
    Kurume-shi, Fukuoka, Japan
    Recruiting
  • Gifu University Hospital
    Gifu, Gifu, Japan
    Recruiting
  • Gunma University Hospital
    Maebashi, Gunma, Japan
    Recruiting
  • Gunma Prefectural Cancer Center
    Ōta, Gunma, Japan
    Recruiting
  • JA Hiroshima General Hospital
    Hatsukaichi-shi, Hiroshima, Japan
    Recruiting
  • Hiroshima City Hiroshima Citizens Hospital
    Hiroshima, Hiroshima, Japan
    Recruiting
  • Hiroshima Prefectural Hospital
    Hiroshima, Hiroshima, Japan
    Recruiting
  • Miyoshi Central Hospital
    Miyoshi-shi, Hiroshima, Japan
    Recruiting
  • Hospital Hakodate Hokkaido
    Hakodate-shi, Hokkaido, Japan
    Recruiting
  • JA Sapporo-Kosei general Hospital
    Sapporo, Hokkaido, Japan
    Recruiting
  • Hokkaido University Hospita
    Sapporo, Hokkaido, Japan
    Recruiting
  • Hyogo Cancer Center
    Akashi-shi, Hyōgo, Japan
    Recruiting
  • Kansai Rosai Hospital
    Amagasaki-shi, Hyōgo, Japan
    Recruiting
  • Japanese Red Cross Society Himeji Hospital
    Himeji-shi, Hyōgo, Japan
    Recruiting
  • University of Tsukuba Hospital
    Tsukuba, Ibaraki, Japan
    Recruiting
  • Iwate Medical University Hospital
    Morioka, Iwate, Japan
    Recruiting
  • Kagoshima University Medical And Dental Hospital
    Kagoshima, Kagoshima-ken, Japan
    Recruiting
  • Kagoshima City Hospital
    Kagoshima, Kagoshima-ken, Japan
    Recruiting
  • Tokai University Hospital
    Isehara-shi, Kanagawa, Japan
    Recruiting
  • St.Marianna University School of Medicine Hospital
    Kawasaki-shi, Kanagawa, Japan
    Recruiting
  • Kitasato University Hospital
    Sagamihara, Kanagawa, Japan
    Recruiting
  • Yokohama City University Hospital
    Yokohama, Kanagawa, Japan
    Recruiting
  • Yokohama Minami Kyosai Hospital
    Yokohama, Kanagawa, Japan
    Recruiting
  • Yokohama Municipal Citizen's Hospital
    Yokohama, Kanagawa, Japan
    Recruiting
  • Kanagawa Cancer Center
    Yokohama, Kanagawa, Japan
    Recruiting
  • Kobe City Medical Center General Hospital
    Kobe, Kobe, Japan
    Recruiting
  • Kumamoto University Hospital
    Kumamoto, Kumamoto, Japan
    Recruiting
  • Japanese Red Cross Kyoto Daiichi Hospital
    Kyoto, Kyoto, Japan
    Recruiting
  • Ise Red Cross Hospital
    Ise-shi, Mie-ken, Japan
    Recruiting
  • JA Matsuzaka Central Hospital
    Matsuzaka, Mie-ken, Japan
    Recruiting
  • Mie University Hospital
    Tsu, Mie-ken, Japan
    Recruiting
  • Tohoku University Hospital
    Sendai, Miyagi, Japan
    Recruiting
  • Shinshu University Hospital
    Matsumoto-shi, Nagano, Japan
    Recruiting
  • Nagasaki University Hospital
    Nagasaki, Nagasaki, Japan
    Recruiting
  • Aichi Cancer Center
    Nagoya, Nagoya, Japan
    Recruiting
  • Nara Prefecture General Medical Center
    Nara, Nara, Japan
    Recruiting
  • Niigata University Medical and Dental Hospital
    Niigata, Niigata, Japan
    Recruiting
  • Niigata Cancer Center Hospital
    Niigata, Niigata, Japan
    Recruiting
  • Oita University Hospital
    Yufu, Oita Prefecture, Japan
    Recruiting
  • Hospital University of the Ryukyus
    Nakagami-gun, Okinawa, Japan
    Recruiting

+53 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.