Clinical Evaluation of [68Ga]Ga-NOTA-RF PET Imaging Targeting RFVT3 in Patients With Pituitary Tumors

November 19, 2025 updated by: Xianzhong Zhang, Peking Union Medical College Hospital
This study aims to evaluate the clinical application value of [68Ga]Ga-NOTA-RF, a novel PET molecular probe targeting riboflavin transporter 3 (RFVT3), in patients with pituitary adenomas. It will observe the probe's imaging characteristics, distribution signs, and the relationships between these factors, tumor differentiation degree, and radiotracer uptake. Additionally, the study will explore the diagnostic advantages of [68Ga]Ga-NOTA-RF in patients with pituitary adenomas and its potential value in precise typing.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Enrolling by invitation

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study aims to evaluate the potential clinical application of [68Ga]Ga-NOTA-RF in pituitary adenomas. Such tumors are characterized by variable degrees of differentiation, subtle early morphological changes, complex metabolic states, and a strong dependence on mitochondrial activity. Existing imaging modalities have limited performance in detecting and characterizing these lesions, highlighting the need for novel metabolic imaging tools. This study will systematically investigate the biodistribution and imaging characteristics of [68Ga]Ga-NOTA-RF in pituitary adenomas, as well as its correlation with RFVT3 expression, to explore its potential value in early tumor detection, metabolic subtype differentiation, and molecular classification.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Early Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
      • Beijing, China
        • Peking Union Medical College Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  1. Age between 18 and 80 years, male or female.
  2. Able to understand and sign written informed consent, willing to follow pre-injection preparation requirements (adequate hydration and avoidance of high-dose riboflavin supplements), and to complete all study procedures.
  3. Recurrent invasive pituitary adenoma within 6 months after surgery, without intracranial or distant metastasis. The postoperative pathological Ki-67 index of the previous pituitary tumor is ≥3%, and tumor growth cannot be controlled by standard medical therapy and radiotherapy.
  4. Radiological and clinical evidence indicates residual or recurrent pituitary adenoma requiring treatment or follow-up management.
  5. At least one measurable and resectable lesion suitable for correlation with PET imaging evaluation; vital signs are stable, and the participant is able to lie supine and cooperate during a 30-60 minute PET scan.

Exclusion Criteria:

  1. Pregnant or planning to become pregnant, or breastfeeding women.
  2. Known history of severe allergic or anaphylactoid reactions to any component of the investigational tracer (riboflavin derivatives, NOTA chelator, or formulation excipients).
  3. Presence of severe or uncontrolled medical conditions (e.g., decompensated heart failure, active infection, myocardial infarction or stroke within the past 4 weeks) that, in the opinion of the investigator, make the participant unsuitable for PET imaging.
  4. Concomitant severe systemic diseases such as cardiac, pulmonary, hepatic, or renal failure.
  5. Pituitary adenoma patients who underwent surgery less than 4 weeks prior to enrollment or completed radiotherapy to the sellar region within the past 3 months.
  6. Participation in another interventional clinical trial within the past 4 weeks, or cumulative radiation exposure from prior research procedures within the past 12 months that may exceed the ethical safety limit.
  7. Severe claustrophobia unrelieved by sedation, or any other condition that would prevent completion of the PET scan.
  8. Poor compliance or any factor judged by the investigator to affect the participant's safety or the quality of study data.
  9. Any other condition that, in the judgment of the investigator, makes the participant unsuitable for study participation.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Pituitary Neoplasms
Participants with pituitary neoplasms will undergo [68Ga]Ga-NOTA-RF PET/CT imaging to evaluate tracer uptake, biodistribution, and safety.
Drug: [68Ga]Ga-NOTA-RF
Administer the [68Ga]Ga-NOTA-RF radiotracer via injection.
Other Names:
  • [68Ga]Ga-RF PET tracer

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
SUVmax
Time Frame: After the completion of the PET examination.
The tumor uptake capacity (expressed as SUV values) of [68Ga]Ga-NOTA-RF PET imaging in intracranial tumors.
After the completion of the PET examination.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Peking Union Medical College Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Xianzhong Zhang, Peking Union Medical College Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 17, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 13, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 13, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 19, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 19, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 28, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 28, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 19, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PUMCH-RFVT3

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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