Peritoneal CarcinomatosisPhase 2NCT06504147
A Study of Radspherin® in Patients With Primary Advanced Epithelial Cancer, With Peritoneal Metastasis That Are Homologous Recombination Proficient Scheduled to Undergo Neoadjuvant Chemotherapy and Interval Debulking Surgery
A Phase 2 study testing Radspherin in people with Peritoneal Carcinomatosis and Ovarian Cancer, run by Oncoinvent Solutions AS at 10 sites in 6 countries.
Trial summary
This is a Phase 2, controlled, randomised, parallel assignment, open label, multicentre study to evaluate efficacy and safety of a single intraperitoneal injection of Radspherin® in patients with primary advanced high-grade serous or high-grade endometrioid epithelial ovarian cancer, fallopian tube, or primary… Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Peritoneal Carcinomatosis, Ovarian Cancer
- What is being tested?
- Radspherin
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 114 participants
- Where
- 10 sitesin 6 countries
- Study dates
- 15 Jun 2024to 28 Feb 2031
- Phase
- Phase 2
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Able and willing to provide written informed consent and to comply with the clinical study protocol (CSP).
- Female of age ≥ 18 years.
- Patients with primary advanced high-grade serous or high-grade endometrioid epithelial ovarian, fallopian tube, or primary peritoneal cancer (FIGO Stage IIIB/C or IV).
- Peritoneal and other metastases eligible for IDS to no residual tumour.
- Adverse events recovered to at least Grade 1 from the effects (excluding alopecia) of any prior medical therapy for malignancy.
- Confirmed HR proficient tumour.
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- Received NACT (numbers of cycles as per investigator's discretion) with regress or stable disease on diagnostic imaging and assessed to be operable to R0 pre-surgery.
- Eastern Cooperative Oncology Group (ECOG) Performance Status Score of 0 to 2 and patient fit enough to undergo IDS and further treatment according to standard of care.
- Adequate renal function:
- Calculated creatinine clearance using the Cockcroft-Gault formula ≥ 40 ml/min or measured creatinine clearance ≥ 40 ml/min.
- Adequate hepatic function:
- Serum bilirubin < 1.5 x upper limit of normal (ULN), and
- Aspartate transaminase and alanine transaminase ≤ 3 x ULN.
- Adequate bone marrow function:
- Absolute neutrophil count ≥ 1.0 x 10^9/l, and
- Platelets ≥ 100 x 10^9/l, and
- Haemoglobin ≥ 9 g/dL.
- For females of childbearing potential, a negative pregnancy test must be documented prior to enrolment.
- For females of childbearing potential agreement to use at least one of the following highly effective (failure rate < 1%) methods of contraception during the treatment period and for at least 9 months if they receive Radspherin®, unless hysterectomy or oophorectomy is performed during IDS.
- Total abstinence (when this is in line with the preferred and usual lifestyle of the patient), periodic abstinence (e.g. calendar, ovulation, symptothermal, post ovulation methods) and withdrawal are not acceptable methods of contraception.
- Female sterilisation (have had surgical bilateral oophorectomy with or without hysterectomy), total hysterectomy, or tubal ligation at least 6 weeks before enrolment. In case of oophorectomy alone, only when the reproductive status of the woman has been confirmed by follow up hormone level assessment.
- Use of oral (oestrogen and progesterone), injected or implanted hormonal methods of contraception or placement of an intrauterine device or intrauterine system, or other forms of hormonal contraception that have comparable efficacy (failure rate < 1%), for example hormone vaginal ring or transdermal hormone contraception. In case of use of oral contraception women should have been stable on the same pill for a minimum of 3 months before taking study treatment.
- Note: In addition to the use of one highly effective method of contraception as listed above, a condom is required for all male partners during the treatment period and for at least 9 months after the dose of IMP, unless vasectomised at least 6 months prior to enrolment.
Who cannot join
- Known somatic or germline BRCA1 or BRCA2 mutations or confirmed HR deficient.
- Suspicion of peritoneal leak, shunt, or otherwise suspected atypical target compartment pharmacokinetics, based on investigator's judgement, patient history and diagnostic images.
- Epithelial borderline tumours, ovarian clear cell carcinoma, mucinous ovarian carcinoma, malignant Brenner tumours, non-epithelial ovarian malignancies, carcinosarcoma and neuroendocrine tumours or recurrent ovarian cancer.
- Symptomatic central nervous system metastasis.
- Another primary malignancy within the past 3 years (except for non melanoma skin cancer, cutaneous melanoma stage 1, cervical cancer in situ or FIGO 2023 Stage IA1 or IA3 prior or synchronous endometrial cancer).
- Prior abdominal/pelvic radiotherapy.
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- Disease progression during NACT.
- Pregnant or lactating (nursing) women.
- Active infections requiring antibiotics, and/or physician monitoring, or recurrent fever > 38.0⁰C associated with a clinical diagnosis of active infection.
- Active liver disease with positive serology for active hepatitis B, hepatitis C or known human immunodeficiency virus (HIV).
- Concurrent congestive heart failure or prior history of New York Heart Association (NYHA) class III/IV cardiac disease.
- Any condition or illness that, in the opinion of the investigator or the medical monitor, would compromise the safety of the patients or interfere with the evaluation of the safety of the investigational medicinal product.
- In the investigator's opinion not able to comply with study procedures. Any medical or psychological condition that would preclude participation in the study or compromise the ability to give informed consent.
- Administration of an investigational medicinal product within 4 weeks, or at least 5 times the half life, prior to enrolment.
- Concurrent administration of any cancer therapy other than planned study treatment within 4 weeks prior to, and up to 4 weeks after the surgery.
- Treatment with bevacizumab within 5 weeks prior to IDS.
- Known hypersensitivity to any of the excipients of the study drug.
Trial locations and contacts
10 sites in 6 countries. Contact the study team or a site near you to ask about taking part.
10 sites in 6 countries
Spain4 sites, 4 recruiting
- Recruiting
Hospital Universitari de Bellvitge
Barcelona
Jordi Ponce, MD, PhD
- Recruiting
Clinica Universidad de Navarra
Madrid
Luis M Chiva, MD, PhD
- Recruiting
Clinica Universidad de Navarra
Pamplona
Luis M Chiva, MD, PhD
- Recruiting
Hospital Universitari i Politècnic La Fe
Valencia
Victor Lago Leal, MD, PhD
United Kingdom2 sites, 2 recruiting
- Recruiting
Imperial College Healthcare NHS Trust
London
Christina Fotopoulou, MD, PhD
- Recruiting
University Hospital Southampton NHS Foundation Trust
Southampton
David Constable-Phelps, MD, PhD
United States1 site, 1 recruiting
- Recruiting
Moffitt Cancer Center
Tampa, Florida, 33612
Hye Sook Chon, MD, PhD
Belgium1 site, 1 recruiting
- Recruiting
UZ Leuven
Leuven
Els Van Nieuwenhuysen, MD, PhD
Italy1 site, 1 recruiting
- Recruiting
Fondazione Policlinico Universitario A. Gemelli IRCCS
Roma
Anna Fagotti, MD, PhD
Norway1 site, 1 recruiting
- Recruiting
The Norwegian Radiumhospital
Oslo
Yun Wang, MD, PhD
About this study
Official title: A Phase 2, Randomised, Open Label, Multicentre Study of an Intraperitoneal α-emitting Radionuclide Therapy (Radspherin®) in Patients With Primary Advanced High-grade Serous or High-grade Endometrioid Epithelial Ovarian, Fallopian Tube, or Primary Peritoneal Cancer, With Peritoneal Metastasis That Are Homologous Recombination Proficient and Scheduled to Undergo Neoadjuvant Chemotherapy and Interval Debulking Surgery
This is a Phase 2, controlled, randomised, parallel assignment, open label, multicentre study to evaluate efficacy and safety of a single intraperitoneal injection of Radspherin® in patients with primary advanced high-grade serous or high-grade endometrioid epithelial ovarian cancer, fallopian tube, or primary peritoneal cancer, with peritoneal metastasis that are HR proficient and scheduled to undergo NACT and IDS. The study will be conducted in 2 parts; first, a Safety Lead-in Cohort will be recruited followed by the randomised part of the study. For both parts of the study, patients must be scheduled to undergo NACT and IDS and complete resection to no residual tumour (R0) should be deemed to be achievable during diagnostic work-up. Patients in both parts of the study will undergo the same procedures and assessments.
- Conditions
- Peritoneal Carcinomatosis, Ovarian Cancer
- Being tested
- Radspherin
- Medical subject headings
- Peritoneal Neoplasms, Ovarian Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
RadspherinDrug
Radspherin® suspension consists of bio-degradable calcium carbonate micro particles with the α-emitting radionuclide 224Ra in suspension. 224Ra has a physical half-life of 3.6 days.
| Study group | Role | What they receive |
|---|---|---|
| Radspherin | Experimental | Not described Receives: Drug: Radspherin |
| Control | No intervention | Not described |
What is being measured
The primary outcome is the main question the study is designed to answer.
Progression free survival
To compare PFS in patients with primary advanced high-grade serous or high-grade endometrioid epithelial ovarian, fallopian tube, or primary peritoneal cancer1 with peritoneal metastasis that are HR proficient following Radspherin® treatment versus no treatment.
Measured: 24 months
Secondary outcomes (1)
Peritoneal progression free survival
To compare peritoneal PFS (PPFS) in patients with primary advanced epithelial cancer with peritoneal metastasis that are HR proficient following Radspherin® treatment versus no treatment.
Measured: 24 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Jul 2024
- Study start15 Jun 2024
- Primary completion29 Feb 2028 (estimated)
- Study completion28 Feb 2031 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Peritoneal CarcinomatosisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 114 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Oncoinvent Solutions AS
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06504147
- Sponsor's protocol ID
- RAD-18-003
- Status last verified
- May 2026
- First submitted
- 10 Jul 2024
- Last updated
- 20 May 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 2, Randomised, Open Label, Multicentre Study of an Intraperitoneal α-emitting Radionuclide Therapy (Radspherin®) in Patients With Primary Advanced High-grade Serous or High-grade Endometrioid Epithelial Ovarian, Fallopian Tube, or Primary Peritoneal Cancer, With Peritoneal Metastasis That Are Homologous Recombination Proficient and Scheduled to Undergo Neoadjuvant Chemotherapy and Interval Debulking Surgery
- ClinicalTrials.gov ID
- NCT06504147
- Acronym / sponsor ID
- RAD-18-003
- Conditions
- Peritoneal Carcinomatosis, Ovarian Cancer
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 114 participants (estimated)
- Lead sponsor
- Oncoinvent Solutions ASIndustry (pharma, biotech, devices)
- Study start
- 15 Jun 2024 (actual)
- Primary completion
- 29 Feb 2028 (estimated)
- Study completion
- 28 Feb 2031 (estimated)
- First posted
- 16 Jul 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a Phase 2, controlled, randomised, parallel assignment, open label, multicentre study to evaluate efficacy and safety of a single intraperitoneal injection of Radspherin® in patients with primary advanced high-grade serous or high-grade endometrioid epithelial ovarian cancer, fallopian tube, or primary peritoneal cancer, with peritoneal metastasis that are HR proficient and scheduled to undergo NACT and IDS. The study will be conducted in 2 parts; first, a Safety Lead-in Cohort will be recruited followed by the randomised part of the study. For both parts of the study, patients must be scheduled to undergo NACT and IDS and complete resection to no residual tumour (R0) should be deemed to be achievable during diagnostic work-up. Patients in both parts of the study will undergo the same procedures and assessments.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Radspherin | Experimental | Drug: Radspherin |
| Control | No intervention | – |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (23 listed)
- Able and willing to provide written informed consent and to comply with the clinical study protocol (CSP).
- Female of age ≥ 18 years.
- Patients with primary advanced high-grade serous or high-grade endometrioid epithelial ovarian, fallopian tube, or primary peritoneal cancer (FIGO Stage IIIB/C or IV).
- Peritoneal and other metastases eligible for IDS to no residual tumour.
- Adverse events recovered to at least Grade 1 from the effects (excluding alopecia) of any prior medical therapy for malignancy.
Key exclusion criteria (17 listed)
- Known somatic or germline BRCA1 or BRCA2 mutations or confirmed HR deficient.
- Suspicion of peritoneal leak, shunt, or otherwise suspected atypical target compartment pharmacokinetics, based on investigator's judgement, patient history and diagnostic images.
- Epithelial borderline tumours, ovarian clear cell carcinoma, mucinous ovarian carcinoma, malignant Brenner tumours, non-epithelial ovarian malignancies, carcinosarcoma and neuroendocrine tumours or recurrent ovarian cancer.
- Symptomatic central nervous system metastasis.
- Another primary malignancy within the past 3 years (except for non melanoma skin cancer, cutaneous melanoma stage 1, cervical cancer in situ or FIGO 2023 Stage IA1 or IA3 prior or synchronous endometrial cancer).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| RadspherinRadspherin® suspension consists of bio-degradable calcium carbonate micro particles with the α-emitting radionuclide 224Ra in suspension. 224Ra has a physical half-life of 3.6 days. | Drug | Radspherin |
Primary outcome
Progression free survival
Time frame: 24 months
To compare PFS in patients with primary advanced high-grade serous or high-grade endometrioid epithelial ovarian, fallopian tube, or primary peritoneal cancer1 with peritoneal metastasis that are HR proficient following Radspherin® treatment versus no treatment.
1 secondary outcome
Peritoneal progression free survival
Time frame: 24 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 May 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
10 sites in 6 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Radspherin in people with Peritoneal Carcinomatosis and Ovarian Cancer, run by Oncoinvent Solutions AS at 10 sites in 6 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 23 inclusion and 17 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 20 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 10 sites in Spain, United Kingdom, United States, Belgium, Italy and 1 more country. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Anne-Kirsti Aksnes, PhD (004722183305, aksnes@oncoinvent.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Progression free survival (time frame: 24 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 May 2026.