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Radioactive injection shrinks brain cysts without surgery

NCT ID NCT02081768

Disease control Sponsor: David Clarke Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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 Results may not be published yet.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
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This status has not been confirmed recently, so it may be out of date.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 tests a treatment for people with fluid-filled cysts in the pituitary area of the brain. Instead of surgery, doctors inject a radioactive substance called 90yttrium colloid directly into the cyst to shrink it and relieve symptoms. The goal is to see if this less invasive approach works better than current options like waiting, draining, or removing the cyst.

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 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

About 40 people

The number the study aims to enrol. It can still change while the study runs.

Start date

Jun 2014

Expected to finish

Oct 2031

An estimate. End dates often move.

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

17 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.

Criteria Ages Eligible for Study: 17 years of age or older Genders Eligible for Study: Both Accepts Healthy Volunteers: No Inclusion Criteria Patients who meet all of the following criteria are eligible for enrollment as study participants: 1. Patients 17 years of age or older. 2. Cystic sellar, suprasellar, parasellar or intrasellar masses diagnosed by histology, cytology or neuroimaging. 3. Tumour measurements and/or tumour volume can be calculated. 4. Patients who require surgical intervention as determined by the treating neurosurgeon. 5. Being a patient managed in the Halifax Neuropituitary Program surgical clinic. 6. Willingness to undergo surgery and give informed surgical consent. 7. Willingness to provide informed consent for study participation. Exclusion Criteria Patients who meet any of these criteria are not eligible for enrollment as study participants: 1. Neurosurgeon's assessment that surgical procedures hold unacceptable operative risk. 2. Having a solid tumour. 3. Pregnant or breast feeding at time of surgical consent and/or surgery. 4. Hypersensitivity, allergies or contraindication to the used radiopharmaceutical agent (90yttrium colloid).

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Conditions

The condition(s) this trial relates to.

central nervous system cyst sella turcica neoplasm

As listed by the trial registrant

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

Cystic tumors of the sellar/parasellar region

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Halifax Infirmary

    RECRUITING

    Halifax, Nova Scotia, B3H 3A7, Canada