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Recruiting Phase 1, Phase 2 NCT05773859

NCT05773859 NEOadjuvant Dendritic Cell Vaccination for Ovarian Cancer

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Clinical Trial Summary
NCT ID NCT05773859
Status Recruiting
Phase Phase 1, Phase 2
Sponsor Radboud University Medical Center
Condition Epithelial Ovarian Cancer
Study Type INTERVENTIONAL
Enrollment 10 participants
Start Date 2023-03-17
Primary Completion 2026-03

Eligibility & Interventions

Sex Female only
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
XP-DC vaccinations

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

Phase 1 is the earliest stage of human testing — safety and dosage are the primary focus. Visits are frequent and medical supervision is intensive. You will be among the first people to receive this treatment.

This trial targets 10 participants in total. It began in 2023-03-17 with a primary completion date of 2026-03.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

This goal of this single arm, single center, exploratory phase I/II clinical trial is to learn more about the immunological efficacy, safety and feasibility of an autologous tumor lysate-loaded autologous XP-DC (cDC1)-based vaccine in patients with ovarian cancer.

Eligibility Criteria

Inclusion criteria * Women over 18 years old with histologically confirmed primary epithelial ovarian cancer. * Not amenable by primary debulking surgery and in need of neoadjuvant chemotherapy and interval debulking * High-grade or low grade serous histology * FIGO stage IIIb, IIIc, IVa or IVb if only lymph nodes ≤ 1cm above the diaphragm or in the groins * Extensive abdominal spread of tumor * WHO/ECOG performance status 0-1 * Neutrophils \>1.5x 109/L, platelets \>100x 109/L, hemoglobin \>5,6 mmol/L (9.0 g/dl), estimated glomerular filtration rate \> 45 ml/min/1.73m2 , AST/ALT \<3 x ULN, serum bilirubin \<1.5 x ULN (exception: Gilbert's syndrome is permitted) * Expected adequacy of follow-up * Postmenopausal or evidence of non-childbearing status or for women of childbearing potential: negative urine or serum pregnancy test, within 28 days of study treatment and confirmed prior to treatment on day 1. Postmenopausal is defined as: * Amenorrhoeic for 1 year or more following cessation of exogenous hormonal treatments; * or surgical sterilisation (bilateral oophorectomy or hysterectomy). * Informed consent Exclusion criteria * Recurrent ovarian cancer * Histologies other than high grade serous ovarian cancer such as, but not restricted to, endometrioid, mucinous, clear cell or carcinosarcoma * Unable and/or unwilling to undergo standard chemotherapy and interval debulking surgery * FIGO stage I-IIb, IIIa or IVb with liver, spleen or lung metastases or lymph nodes above the diaphragm or in the groins \> 1 cm * History of any second malignancy, with the exception of adequately treated basal cell carcinoma, cervical cancer \> 5 years ago or early stage breast cancer \>10 years ago. * Any serious clinical condition that may interfere with the safe administration of DC vaccinations * Heart failure (NYHA class III/IV) * Any uncontrolled co-morbidity, e.g. psychiatric or social conditions interfering which participation * Unable to undergo a tumor biopsy * Pregnancy or insufficient anti-conception if reproduction is still possible * Active infection of Hepatitis B, C, HIV and syphilis * Serious other active infections * Known allergy to shell fish * Auto immune disease (exception: vitiligo is permitted) * History of organ allografts * Chronic treatment with systemic immunosuppressive drugs (i.e. more than 10 mg prednisolone equivalent)

Contact & Investigator

Central Contact

Bouke Koeneman, MD

✉ bouke.koeneman@radboudumc.nl

📞 +31 (0)24 361 76 00

Principal Investigator

Nelleke Ottevanger, MD/PhD

PRINCIPAL INVESTIGATOR

Radboud University Medical Center

Frequently Asked Questions

Who can join the NCT05773859 clinical trial?

This trial is open to female participants only, aged 18 Years or older, studying Epithelial Ovarian Cancer. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT05773859 trial and what does that mean for participants?

Phase 1 trials are the first stage of human testing. The primary goal is to assess safety and determine appropriate dosage levels. Participants are closely monitored. These trials typically involve a small number of volunteers.

Is NCT05773859 currently recruiting?

Yes, NCT05773859 is actively recruiting participants. Contact the research team at bouke.koeneman@radboudumc.nl for enrollment information.

Where is the NCT05773859 trial being conducted?

This trial is being conducted at Nijmegen, Netherlands.

Who is sponsoring the NCT05773859 clinical trial?

NCT05773859 is sponsored by Radboud University Medical Center. The principal investigator is Nelleke Ottevanger, MD/PhD at Radboud University Medical Center. The trial plans to enroll 10 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: September 2026  ·  Data Methodology