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Radioactive microparticles injected into pancreatic tumors: a new hope?

NCT ID NCT05131776

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early This study
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study aimed to see if injecting radioactive particles (OncoSil) directly into pancreatic tumors during an endoscopic ultrasound, combined with chemotherapy, could safely shrink tumors and improve survival. It was designed for people with advanced pancreatic cancer that could not be removed by surgery. However, the study was stopped early after enrolling only 2 participants, so no clear conclusions can be drawn.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

2 people

The number who actually took part.

Started

Nov 2021

Finished

Dec 2023

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Study participants are ≥ 18 years of age at screening. 2. Histologically or cytologically proven adenocarcinoma of the pancreas. 3. Unresectable locally advanced pancreatic carcinoma. Patients with technically resectable tumours (T1-T3) will also be eligible, if they are deemed unresectable due to medical comorbidities or refusal of surgery. 4. Pancreatic target tumour diameter ≥ 2.0 cm (shortest axis) to ≤ 6.0 cm (longest axis) 5. An ECOG Performance Status of 0 to 1 and Karnofsky Performance Status of 80 - 100. 6. Willing and able to complete study procedures within the study timelines. 7. Adequate renal function: serum creatinine less than 1.5 x upper limit of normal (ULN). 8. Adequate liver function: Serum SGOT/AST and serum SGPT/SLT \< 3 times ULN and serum bilirubin \<1.5 times the ULN unless the patient is known to have prior Gilbert's Syndrome. 9. Adequate bone marrow function: white blood cells (WBCs) ≥ 3,000/mm3, absolute neutrophil count (ANC) ≥ 1,500/mm3, haemoglobin ≥ 9 g/dL, and platelets ≥ 100,000/mm3. 10. Life expectancy of at least 3 months at the time of screening as judged by the investigator. 11. Not pregnant, and if of childbearing potential, agrees to use adequate birth control (hormonal or barrier method of birth control or abstinence) prior to study entry and during the study and agrees not to donate sperm or ova, for the duration of the study and 12 months post implantation of the investigational device. 12. Provide signed Informed Consent. 13. Technically feasible - tumour must be within reach of the EUS probe for fine needle Injection. Exclusion Criteria: 1. More than one primary lesion. 2. Any prior radiotherapy or chemotherapy for pancreatic cancer. 3. Use of other investigational agent at the time of screening, or within 30 days or five half-lives of Screening Visit 1, whichever is longer. 4. History of malignancy, treated or untreated, within the past five years whether or not there is evidence of local recurrence or metastases, with the exception of basal cell carcinoma of the skin and cervical carcinoma in situ. 5. Evidence of tumour invasion into stomach, duodenum or peritoneum 6. In the opinion of the investigator, EUS directed implantation posing undue study participant risk. This includes: 1. Where previous EUS-FNA was considered technically too difficult to perform; 2. Imaging demonstrates multiple collateral vessels surrounding or adjacent to the target tumour within the pancreas; 3. Presence (or significant risk) of varices near to the target tumour. 7. A known allergy or history of hypersensitivity to silicon, Phosphorus or any of the OncoSil™ components. 8. Patients who do not consent to chemotherapy 9. Actively on medication that increase bleeding risk (i.e. aspirin, clopidogrel, warfarin, NOAC). 10. Any other health condition that would preclude participation in the study in the judgment of the investigator.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Department of Surgery, Prince of Wales Hospital

    Hong Kong, Hong Kong

More trials for these conditions

Other studies related to the condition(s) this trial covers.