Multicenter Study of 18F-Labeled NY104 for PET/CT Imaging in Renal Cell Carcinoma

September 15, 2026 updated by: The Affiliated Hospital of Qingdao University
This study aims to evaluate the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of 18F-NY104 PET/CT in detecting primary, recurrent, and metastatic lesions of renal cell carcinoma (RCC), and to explore its potential for imaging and treatment response assessment in other CAIX-positive solid tumors, such as breast cancer and nasopharyngeal carcinoma, where high CAIX expression is associated with poor prognosis. The study will also investigate the effect of oral low-dose acetazolamide on the biodistribution of 18F-NY104, particularly in the stomach and kidneys.

Study Overview

Detailed Description

Kidney disease affects more than 500 million people worldwide, including approximately 120 million individuals in China. Among various kidney diseases, renal cell carcinoma (RCC) represents one of the most serious malignant conditions affecting the kidney and is one of the most common malignancies of the urinary system. The incidence of RCC in China has increased in recent years. Early-stage RCC is often asymptomatic and may be detected incidentally during routine health examinations. However, RCC is an aggressive malignancy, and a substantial proportion of patients present with metastatic disease at initial diagnosis or develop recurrence and metastasis after surgery. Therefore, accurate detection of primary, recurrent, and metastatic lesions is important for diagnosis, staging, restaging, treatment planning, and prognosis assessment.

Carbonic anhydrase IX (CAIX) is a transmembrane glycoprotein of the carbonic anhydrase family and is closely associated with the von Hippel-Lindau (VHL)/hypoxia-inducible factor (HIF) signaling pathway. By regulating intracellular and extracellular pH under hypoxic conditions, CAIX contributes to tumor cell survival, proliferation, invasion, and metastasis. CAIX has limited expression in most normal tissues but is highly expressed in RCC, particularly clear cell RCC, making it an attractive molecular target for tumor imaging and therapy. Moreover, CAIX overexpression is observed in a variety of other solid tumors, including breast cancer and nasopharyngeal carcinoma, and has been associated with tumor hypoxia, aggressive tumor characteristics, and poor prognosis. Thus, non-invasive assessment of CAIX expression may provide clinically relevant information for tumor detection, characterization, prognosis assessment, and treatment response evaluation in RCC and other CAIX-positive solid tumors.

18F-NY104 is a novel CAIX-targeted PET imaging agent with favorable radiochemical and imaging characteristics. Preclinical studies have demonstrated its specific binding to CAIX expressed on tumor cells, as well as favorable pharmacokinetics and imaging performance, supporting its potential for non-invasive, whole-body assessment of CAIX-positive tumors.

This study will evaluate the diagnostic performance of 18F-NY104 PET/CT for detecting primary, recurrent, and metastatic RCC lesions and explore its potential application in other CAIX-positive solid tumors, including breast cancer and nasopharyngeal carcinoma. Its potential value for non-invasive assessment of CAIX expression and treatment response will also be investigated. In addition, the study will evaluate the effect of oral low-dose acetazolamide, a CAIX inhibitor, on the biodistribution of 18F-NY104, particularly physiological uptake in the stomach and kidneys, and its potential impact on lesion visualization and image interpretation.

Study Type

Observational

Enrollment (Estimated)

120

Contacts and Locations

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

Study Contact

Study Locations

    • Shandong
      • Qingdao, Shandong, China
        • Recruiting
        • The Affiliated Hospital of Qingdao University
        • Contact:

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

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

The cohort primarily included patients who were clinically diagnosed with or suspected to have renal cell carcinoma (RCC), those with suspected recurrence or metastasis after treatment of RCC, and patients with CAIX-positive solid tumors, including but not limited to breast cancer and nasopharyngeal carcinoma.

Description

Inclusion Criteria:

  1. Capable of understanding and voluntarily signing the informed consent form; able to complete the trial in accordance with the protocol requirements;
  2. Age 18-75 years; no gender restrictions;
  3. Clinically diagnosed/suspected renal cell carcinoma, clinically diagnosed/suspected recurrence and/or metastasis after treatment of renal cell carcinoma, or CAIX-positive solid tumors, including but not limited to breast cancer and nasopharyngeal carcinoma;
  4. At least 1 measurable solid lesion in the subject, which can be accurately and continuously measured using modified RECIST criteria (version 1.1);
  5. ECOG performance status score of 0-2;
  6. Laboratory parameters must meet:

    1. Hematology: WBC ≥4.0×10⁹/L or neutrophils ≥1.5×10⁹/L, PLT ≥100×10⁹/L, Hb ≥90 g/L; PT or APTT ≤1.5×ULN (upper limit of normal);
    2. Liver and kidney function: T-Bil ≤1.5×ULN, ALT/AST ≤2.5×ULN or ≤5×ULN (for subjects with liver metastasis), ALP ≤2.5×ULN (if bone or liver metastasis is present, ALP ≤4.5×ULN); BUN ≤1.5×ULN, SCr ≤1.5×ULN;
    3. Other routine tests: Within normal ranges or deemed acceptable by the investigator;
  7. Expected survival ≥12 weeks;
  8. Female subjects: Effective contraception (defined as sterilization, intrauterine hormone device, condoms, contraceptives/agents, abstinence, or partner vasectomy) must be used during the study and for 6 months post-study; Male subjects: Agreement to use contraception during the study and for 6 months post-study.

Exclusion Criteria:

  1. Recovery from major trauma (including surgery) within 4 weeks prior to study examination;
  2. Patients with systemic or local severe infections or other serious comorbidities;
  3. Severe hepatic or renal dysfunction;
  4. Refusal to participate in this clinical study;
  5. Patients with a history of allergy to any component of the imaging agent (including antibodies) or allergic constitution;
  6. Childbearing-aged male or female subjects who cannot adopt effective contraception;
  7. Women planning pregnancy, currently pregnant, or lactating;
  8. Patients unable or unwilling to undergo PET/CT scanning;
  9. Other subjects deemed ineligible by the investigator.

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
18F-NY104 PET/CT scan
The radionuclide ¹⁸F will serve as the tracer in this study. NY104 will be labeled with [¹⁸F]AlF to form the ¹⁸F-NY104 injection for use in this research.All participants will undergo ¹⁸F-NY104 PET scan.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
SUV
Time Frame: 2 years
The uptake of the tracer in the primary and metastatic tumor lesions by measuring standardized uptake value (SUV) on PET/CT
2 years

Collaborators and Investigators

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

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

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)

April 12, 2025

Primary Completion (Estimated)

December 1, 2027

Study Completion (Estimated)

December 1, 2027

Study Registration Dates

First Submitted

April 1, 2025

First Submitted That Met QC Criteria

April 1, 2025

First Posted (Actual)

April 8, 2025

Study Record Updates

Last Update Posted (Actual)

September 17, 2026

Last Update Submitted That Met QC Criteria

September 15, 2026

Last Verified

September 1, 2026

More Information

Terms related to this study

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.

Subscribe