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89Zr-Girentuximab

Phase 3

Clear Cell Renal Cell Carcinoma | Monoclonal antibody | Oncology |Telix Pharmaceuticals Limited|Last Updated: May 17, 2024

Development status

Highest phase Phase 3
Registered trials 6 across 4 sponsors since Feb 2019

Target and mechanism

Molecular targetCA9
Target classOther
ModalityMonoclonal antibody

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials2
Total Enrollment310

FDA Designations

No designations recorded

Clinical trial landscape

89Zr-Girentuximab · 4 trials · 5 indications

Phase 3 1Phase 1 3
NCT0384911889Zr-TLX250 for PET/CT Imaging of ccRCC- ZIRCON StudyClear Cell Renal Cell Carcinoma
COMPLETED300 Analytics
PHASE3COMPLETED
89Zr-TLX250 for PET/CT Imaging of ccRCC- ZIRCON Study
Clear Cell Renal Cell CarcinomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Sensitivity and Specificity of Qualitative Assessment of PET/CT Imaging With 89Zr-TLX250 to Noninvasively Detect ccRCC in Patients With Indeterminate Renal Masses, Using Histology as Standard of Truth.
Diagnostic PET/CT scan on Day 5 ± 2 days post 89Zr-TLX250 administration. Histological confirmation of the material from nephrectomy conducted within 90 days post 89Zr-TLX250 administration served as standard of truth.

This outcome was evaluated on all patients by using a PET/CT machine to determine the uptake of the Zr89 radiotracer within the renal lesion. This was compared against the histological determination of the lesion type following resection of the lesion

Comparison of the sensitivity and specificity of 89Zr-girentuximab PET with FDG PET
Day 1 - Day 90

Sensitivity and specificity will be established following histological confirmation

Safety parameter Physical Examination
9 days

Frequency of occurrence and severity of abnormal findings in safety investigations regarding the physical examination.

Safety parameter Vital Signs
9 days

Frequency of occurrence and severity of abnormal findings in safety investigations regarding the Vital signs

Safety parameter Laboratory examinations
9 days

Frequency of occurrence and severity of abnormal findings in safety investigations regarding Laboratory examinations.

Safety parameter concomitant medications
9 days

Frequency of occurrence and severity of abnormal findings in safety investigations regarding concomitant medications.

Safety parameter ECG
9 days

Frequency of occurrence and severity of abnormal findings in the 12-lead ECG (ECG QT Interval)

Incidence of Treatment-Emergent Adverse events [Safety and Tolerability]
90 days

Incidence of abnormal laboratory test results and abnormal vital signs

Determination of the sensitivity and specificity of 89Zr-TLX250 to detect clear cell renal cell carcinoma
90 days

The sensitivity and specificity of 89Zr-TLX250 to detect renal cell carcinoma will be established by a diagnostic scan after administration of the investigational product followed by surgery of the indeterminate mass. After surgical removal of the kidney mass , diagnostic histology of the mass will be conducted and used as the "standard of truth" comparator.

Secondary Endpoints

To evaluate the correlation between 89Zr-girentuximab SUV's and degree of urinary carbonic anhydrase IX excretion (cytology and CA-IX via PCR).
Day 1
Number of participants with treatment related adverse events related to 89Zr-girentuximab administration
Day 1 to Day 90
To quantify the correlation between tumour volume using MIM quantitative software and histopathological findings
Day 1 - Day 90
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeDIAGNOSTIC

Treatment Arms

ArmTypeDescription
89Zr-girentuximabEXPERIMENTALA single administration of 37 Megabecquerel (MBq) (±10%) 89Zr-girentuximab, containing a mass dose of 10 mg of girentuximab, followed by a diagnostic scan on Day 5 ± 2 days after administration.
Administration of 89Zr-GirentuximabOTHERAdministration of 89Zr-Girentuximab as per protocol

Interventions

NameTypeDescription
89Zr-girentuximabDIAGNOSTIC_TESTSingle IV administration on Day 0, followed by diagnostic scan on Day 5 +/- 2 days.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites31

Inclusion Criteria: 1. Written and voluntarily given Informed Consent 2. Male or female ≥18 years of age 3. Imaging evidence of a single indeterminate renal mass of ≤7cm in largest diameter (tumour stage cT1) , on CT or MRI with and without contrast agent, suspicious for ccRCC 4. Scheduled for lesi...

Countries:United StatesAustraliaBelgiumCanadaFranceNetherlandsTurkey (Türkiye)United KingdomChinaJapan
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Frequently asked questions about 89Zr-Girentuximab

What is 89Zr-Girentuximab?

89Zr-Girentuximab is an investigational PET imaging agent being developed by Telix Pharmaceuticals Limited for use in oncology. It is designed to help visualize certain cancers, including clear cell renal cell carcinoma and urothelial carcinoma, during PET/CT imaging procedures. It combines the radionuclide zirconium-89 with the antibody girentuximab.

What does 89Zr-Girentuximab target?

89Zr-Girentuximab targets CA9, also known as carbonic anhydrase IX. CA9 is a protein frequently expressed in clear cell renal cell carcinoma and other tumor types. By binding CA9, the zirconium-89 labeled antibody allows PET imaging to detect cells expressing this target, supporting diagnostic evaluation of renal masses and urothelial carcinoma.

Who is developing 89Zr-Girentuximab?

Telix Pharmaceuticals Limited is developing 89Zr-Girentuximab. Telix Pharmaceuticals trades under the ticker TLX. The company is advancing the agent as a PET/CT imaging product for oncology indications, including clear cell renal cell carcinoma and urothelial carcinoma.

What phase is 89Zr-Girentuximab in?

89Zr-Girentuximab is in clinical development, with Phase 1 studies completed. It is investigational and has not been approved by the FDA. A larger Phase 3 study, the ZIRCON study, has also been completed. The program includes completed trials in renal cell carcinoma and urothelial carcinoma.

What clinical trials is 89Zr-Girentuximab in?

Completed clinical trials of 89Zr-Girentuximab include NCT03849118, the Phase 3 ZIRCON study in clear cell renal cell carcinoma, and Phase 1 studies NCT05861778 in Chinese patients with indeterminate renal masses or suspected recurrent clear cell renal cell carcinoma, NCT05046665 in urothelial carcinoma, and NCT04496089 in renal cell carcinoma in Japan.

What is 89Zr-Girentuximab used for?

89Zr-Girentuximab is being studied for PET/CT imaging in oncology, specifically for clear cell renal cell carcinoma and urothelial carcinoma. It is intended to help evaluate indeterminate renal masses and suspected recurrent disease. It is an investigational imaging agent and is not approved for clinical use.