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Solid TumorPhase 2/3NCT06851663

Trop2-targeted immunoPET Imaging of Solid Tumors

A Phase 2/3 study testing [68Ga]Ga-NOTA-T4, [68Ga]Ga-NOTA-RT4 and [18F]F-RESCA-T4 in people with Solid Tumor and Solid Carcinoma, run by RenJi Hospital at 1 site in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This study aims to establish and optimize the trophoblast cell surface antigen 2 (Trop2)-targeted immuno-positron emission tomography/computed tomography (immunoPET/CT) imaging method and its physiological and pathological distribution characteristics, based on which the diagnostic efficacy of the above imaging agents… Read more about this study

Who is it for?
Ages 18 to 75 years
What is being tested?
[68Ga]Ga-NOTA-T4, [68Ga]Ga-NOTA-RT4 and [18F]F-RESCA-T4
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
400 participants
Where
1 siteChina
Study dates
23 Dec 2024to Dec 2027
Phase
Phase 2/3
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 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Aged 18-75 year-old and of either sex
  • Histologically confirmed diagnosis of solid tumors (including uroepithelial cancer, bladder cancer, prostate cancer, lung cancer, nasopharyngeal cancer, liver cancer, cholangiocarcinoma, ovarian cancer, cervical cancer, endometrial cancer, thyroid cancer, head and neck cancer) or suspected solid tumors (including uroepithelial cancer, bladder cancer, prostate cancer, lung cancer, nasopharyngeal cancer, liver cancer, cholangiocarcinoma, ovarian cancer, cervical cancer, endometrial cancer, thyroid cancer, head and neck cancer) by diagnostic imaging;
  • Capable of giving signed informed consent, including compliance with the requirements and restrictions in the informed consent form (ICF) and this protocol.

Who cannot join

  • Pregnancy;
  • Severe hepatic and renal insufficiency;
  • Allergic to single-domain antibody radiopharmaceuticals.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Weijun Wei, Ph.D. & M.D. contact

15000083153

wwei@shsmu.edu.cn

China1 site, 1 recruiting
  • Renji Hospital, School of Medicine, Shanghai Jiao Tong University

    Shanghai, 200127

    Weijun Wei, 15000083153, wwei@shsmu.edu.cn

    Shuxian An, 17717453484, anshuxian@shsmu.edu.cn

    Recruiting

Other trials in China

About this study

This study aims to establish and optimize the trophoblast cell surface antigen 2 (Trop2)-targeted immuno-positron emission tomography/computed tomography (immunoPET/CT) imaging method and its physiological and pathological distribution characteristics, based on which the diagnostic efficacy of the above imaging agents in solid tumors (including uroepithelial cancer, bladder cancer, prostate cancer, lung cancer, nasopharyngeal cancer, liver cancer, cholangiocarcinoma, ovarian cancer, cervical cancer, endometrial cancer, thyroid cancer, head and neck cancer) will be evaluated.

Read the detailed description

Histologically confirmed solid tumors (including uroepithelial cancer, bladder cancer, prostate cancer, lung cancer, nasopharyngeal cancer, liver cancer, cholangiocarcinoma, ovarian cancer, cervical cancer, endometrial cancer, thyroid cancer, head and neck cancer), or patients with suspected solid tumors (including uroepithelial cancer, bladder cancer, prostate cancer, lung cancer, nasopharyngeal cancer, liver cancer, cholangiocarcinoma, ovarian cancer, cervical cancer, endometrial cancer, thyroid cancer, head and neck cancer) indicated by conventional diagnostic imaging will be included. Patients will also be included for routine follow-up, surveillance, and treatment efficacy evaluation.For patients with prostate cancer or suspected prostate cancer, head-to-head comparisons with PSMA PET are still needed.

Enrolled patients will undergo whole-body immunoPET/CT scans 1-2 hours after tracer injection (0.05-0.1 mCi/kg). The uptake of imaging tracers in tumors and normal organs/tissues will be scored visually and quantitatively.

Tumor uptake will be quantified by the maximum standard uptake value (SUVmax). The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy will be calculated to assess the diagnostic efficacy. The correlation between lesion uptake and Trop2 expression level determined by immunohistochemistry staining will be further analyzed. The primary exploration endpoint will be the tracers' imaging feasibility and preliminary diagnostic value compared to conventional imaging approaches like 18F-FDG PET/CT.

Being tested
[68Ga]Ga-NOTA-T4, [68Ga]Ga-NOTA-RT4, [18F]F-RESCA-T4, [18F]F-RESCA-RT4
Keywords
Trophoblast cell surface antigen 2 (Trop2), ImmunoPET, Solid Tumor
Medical subject headings
Carcinoma, Transitional Cell, Urinary Bladder Neoplasms, Prostatic Neoplasms, Lung Neoplasms, Nasopharyngeal Neoplasms, Liver Neoplasms, Cholangiocarcinoma, Ovarian Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • [68Ga]Ga-NOTA-T4Drug

    Also called [68Ga]T4

    Enrolled patients will receive 0.05-0.1 mCi/kg of [68Ga]Ga-NOTA-T4. ImmunoPET/CT imaging will be acquired 1-2 hours after [68Ga]Ga-NOTA-T4 injection.

  • [68Ga]Ga-NOTA-RT4Drug

    Also called [68Ga]RT4

    Enrolled patients will receive 0.05-0.1 mCi/kg of [68Ga]Ga-NOTA-RT4. ImmunoPET/CT imaging will be acquired 1-2 hours after [68Ga]Ga-NOTA-RT4 injection.

  • [18F]F-RESCA-T4Drug

    Also called [18F]T4

    Enrolled patients will receive 0.05-0.1 mCi/kg of [18F]F-RESCA-T4. ImmunoPET/CT imaging will be acquired 1-2 hours after [18F]F-RESCA-T4 injection.

  • [18F]F-RESCA-RT4Drug

    Also called [18F]RT4

    Enrolled patients will receive 0.05-0.1 mCi/kg of [18F]F-RESCA-RT4. ImmunoPET/CT imaging will be acquired 1-2 hours after [18F]F-RESCA-RT4 injection.

Study groups in NCT06851663
Study groupRoleWhat they receive
Trop2-targeted immunoPET imagingExperimentalEnrolled patients will undergo a Trop2-targeted immunoPET/CT scanning.
Receives: Drug: [68Ga]Ga-NOTA-T4; Drug: [68Ga]Ga-NOTA-RT4; Drug: [18F]F-RESCA-T4; Drug: [18F]F-RESCA-RT4

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Biodistribution-Standardized uptake value (SUV) of normal tissues and organs.

    Measurement of the overall biodistribution of the above tracers in normal tissues and organs (bladder (after voiding), background (pelvic fat), blood, brain, salivary and lacrimal glands, lung, liver, spleen, pancreas, small intestine, and kidneys). To calculate the SUV, circular regions of interest were drawn around the area of focally increased uptake in the transaxial slices and automatically fitted to a three-dimensional volume of interest.

    Measured: 1 day from injection of the tracers

  2. SUV of tumors

    The SUV of the above tracers in the primary and/or metastatic lesions of the included subjects. To calculate the SUV, circular regions of interest were drawn around the area of focally increased uptake in the transaxial slices and automatically fitted to a three-dimensional volume of interest.

    Measured: 1 day from injection of the tracers

  3. Radiation dosimetry of tissues/organs

    Measurement of absorbed radiation doses (Gy/MBq) to tissues/organs. The following tissues were included: adrenals, brain, breasts, gallbladder, small intestine, upper and lower large intestine, stomach, heart contents, heart muscle, kidney, liver, lung, muscle, ovaries, pancreas, red marrow, trabecular and cortical bone, spleen, testes, thymus, thyroid, urinary bladder, and uterus. Dynamic imaging within one hour will be performed for this purpose.

    Measured: 1 day from injection of the tracers

  4. Radiation dosimetry of tumors

    Measurement of absorbed radiation doses (Gy/MBq) to tumors. Dynamic imaging within one hour will be performed for this purpose.

    Measured: 1 day from injection of the tracers

  5. Radiation dosimetry of whole-body

    Whole-body activity was measured using a large volume of interest (VOI) covering the entire subject.

    Measured: 1 day from injection of the tracers

  6. Diagnostic sensitivity

    Sensitivity = (True Positives) / (True Positives + False Negatives). The diagnostic value of Trop2 immunoPET/CT will be compared with that of conventional imaging approaches, including 18F-FDG PET/CT, CT, and MRI.

    Measured: 30 days

  7. Diagnostic specificity

    Specificity = (True Negatives) / (True Negatives + False Positives). The diagnostic value of Trop2 immunoPET/CT will be compared with that of conventional imaging approaches, including 18F-FDG PET/CT, CT, and MRI.

    Measured: 30 days

  8. Accuracy

    Accuracy = (True Positives + True Negatives) / (Total Tests). The diagnostic value of Trop2 immunoPET/CT will be compared with that of conventional imaging approaches, including 18F-FDG PET/CT, CT, and MRI.

    Measured: 30 days

  9. Positive Predictive Value (PPV)

    PPV = (True Positives) / (True Positives + False Positives). The diagnostic value of Trop2 immunoPET/CT will be compared with that of conventional imaging approaches, including 18F-FDG PET/CT, CT, and MRI.

    Measured: 30 days

  10. Negative Predictive Value (NPV)

    NPV = (True Negatives) / (True Negatives + False Negatives). The diagnostic value of Trop2 immunoPET/CT will be compared with that of conventional imaging approaches, including 18F-FDG PET/CT, CT, and MRI.

    Measured: 30 days

Secondary outcomes (5)
  1. Trop2 immunoPET/CT in altering initial staging for patients with solid tumors

    Assess the role of Trop2 immunoPET/CT in initial staging in terms of the number of metastases.

    Measured: 3-6 months

  2. Trop2 immunoPET/CT for postoperative surveillance for patients with solid tumors

    Assess the role of Trop2 immunoPET/CT in surveillance in terms of the number of metastases, Trop2-derived tumor volume (Trop2-TV), and total lesion Trop2 uptake (Trop2-TLU).

    Measured: 3-6 months

  3. Trop2 immunoPET/CT for restaging for patients with solid tumors

    Assess the role of Trop2 immunoPET/CT in restaging in terms of the number of metastases, Trop2-TV, and Trop2-TLU.

    Measured: 3-6 months

  4. Trop2 immunoPET/CT in evaluating treatment responses

    We will also investigate the role of Trop2 immunoPET/CT in predicting and evaluating the treatment efficacy in patients with solid tumors (including uroepithelial cancer, bladder cancer, prostate cancer, lung cancer, nasopharyngeal cancer, liver cancer, cholangiocarcinoma, ovarian cancer, cervical cancer, endometrial cancer, thyroid cancer, head and neck cancer). The treatment regimens vary for different tumor types but involve chemotherapy, molecularly targeted therapies, immunotherapies (e.g. PD-1/PD-L1 inhibitors), and cell therapies.

    Measured: 1-2 years

  5. Whole-body tumor burden(Trop2/PSMA-TV and TL-Trop2/PSMA)

    For patients with prostate cancer or suspected prostate cancer, we will investigate the association between Trop2-derived and PSMA-derived volumetric parameters by correlating their respective values obtained from [18F]AlF-RESCA-RT4 and PSMA PET

    Measured: 30 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted28 Feb 2025
  2. Study start23 Dec 2024
  3. Primary completionDec 2027 (estimated)
  4. Study completionDec 2027 (estimated)

Resources

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 2/3
Primary purpose
Diagnosis
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
400 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06851663
Sponsor's protocol ID
LY2024-307-A
Status last verified
May 2026
First submitted
24 Feb 2025
Last updated
29 May 2026
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Long X, An S, Nian X, Xu D, Wei W, Lan X, Dong L, Jiang D. Trop2 immuno-PET/CT imaging of prostate cancer: a proof-of-concept translational study. BMC Med. 2025 Dec 31;24(1):66. doi: 10.1186/s12916-025-04589-8.

    PubMed 41469668

Questions about this trial

What is this clinical trial studying?

A Phase 2/3 study testing [68Ga]Ga-NOTA-T4, [68Ga]Ga-NOTA-RT4 and [18F]F-RESCA-T4 in people with Solid Tumor and Solid Carcinoma, run by RenJi Hospital at 1 site in China.

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 3 inclusion and 3 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 29 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 1 site in China. 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 combined 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.

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

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 Weijun Wei, Ph.D. & M.D. (15000083153, wwei@shsmu.edu.cn), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Biodistribution-Standardized uptake value (SUV) of normal tissues and organs. (time frame: 1 day from injection of the tracers). The study lists 10 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06851663, which also lists 1 linked publication.

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 29 May 2026.

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