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Can a radioactive tracer reveal whether immunotherapy is working?

NCT ID NCT07724535

Diagnosis Sponsor: Peking University Cancer Hospital & Institute 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 24, 2026 · Last updated Jul 31, 2026 · Updated 1 time

Summary

This trial is investigating whether a new radioactive tracer called 18F-grazy-02, used with PET/CT scans, can safely and effectively monitor how well immunotherapy is working in people with lymphoma or solid tumors. The tracer targets granzyme B, a protein released by immune cells when they attack cancer. By measuring tracer uptake in tumors, doctors hope to see early signs of treatment response. The study includes 30 participants and will also track any side effects from the tracer itself.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
a radioactive tracer called 18F-grazy-02, used for PET/CT imaging
What this could lead to
If successful, this imaging method could help doctors see early whether immunotherapy is working, potentially guiding treatment decisions without invasive biopsies.
What could go wrong
This is an early-phase trial with only 30 participants, so the tracer's accuracy and safety are still being tested. It may not reliably predict treatment response in all patients.

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 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

About 30 people

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

Started

Jun 2026

Expected to finish

Dec 2028

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

18 to 75 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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. 18-75 years old; 2. ECOG score 0 or 1 point; 3. Participants with suspected or confirmed non-small cell lung cancer or melanoma who are suggested by the clinicians to conduct PET/CT imaging for tumor diagnosis or staging. Exclusion Criteria: 1. Pregnant or nursing; 2. Severe hepatic or renal dysfunction; 3. Low WBC (less than 3 x 10\^9/L); 4. Unable to comply with the PET/CT imaging procedures.

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Conditions

The condition(s) this trial relates to.

cancer melanoma neoplasm non-small cell lung carcinoma

As listed by the trial registrant

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

Cancer

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

  • Peking University Cancer Hospital & Institute

    RECRUITING

    Beijing, Beijing Municipality, 100142, China

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