ArticleClinical cancer research : an official journal of the American Association for Cancer Research2022
ImmunoPET Imaging with 89Zr-Labeled Atezolizumab Enables In Vivo Evaluation of PD-L1 in Tumorgraft Models of Renal Cell Carcinoma.
Article in Clinical cancer research : an official journal of the American Association for Cancer Research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04006522 (An Exploratory Study of 89Zr-DFO-Atezolizumab ImmunoPET/CT in Patients With Locally Advanced or Metastatic Renal Cell Carcinoma), which is not on this map. Cited by 13 papers.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
An Exploratory Study of 89Zr-DFO-Atezolizumab ImmunoPET/CT in Patients With Locally Advanced or Metastatic Renal Cell Carcinoma
Who cites it
13 citing papers in PubMed, 22 citations in OpenAlex.
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- Advances in PD-L1 Targeted Molecular Imaging Radiotracers Research: From Preclinical Exploration to Clinical Application.Molecular imaging and biology · 2026Review
- Core regulatory mechanisms of the PD-L1 axis and clinical strategies for immune escape and immunotherapy response in nasopharyngeal carcinoma.Translational oncology · 2026Review
- Nuclear medicine in predicting hepatocellular carcinoma response.Nuclear medicine communications · 2026Review
- Radioligand-Antibody Conjugates: Integrating Antibody Engineering, Chelator Chemistry, and Radioligands for Precision Theranosis.Molecular diagnosis & therapy · 2026Review
- 68Ga-NK224 PET/CT for Noninvasive Evaluation of PD-L1 Expression and Intertumor Heterogeneity: A Translational Exploratory Study.Clinical cancer research : an official journal of the American Association for Cancer Research · 2025Article
- The Role of Nuclear Medicine in Predicting Treatment Response to Immunotherapy and Targeted Therapy in Hepatocellular Carcinoma: A Narrative Review.Journal of hepatocellular carcinoma · 2025Review
- PET Imaging of Peptide Probe Al[Molecular pharmaceutics · 2024Article
- Inspired by novel radiopharmaceuticals: Rush hour of nuclear medicine.Chinese journal of cancer research = Chung-kuo yen cheng yen chiu · 2023Article
- Deciphering transcriptomic determinants of the divergent link between PD-L1 and immunotherapy efficacy.NPJ precision oncology · 2023Article
- Scandium-44: Diagnostic Feasibility in Tumor-Related Angiogenesis.International journal of molecular sciences · 2023Review
- Current and potential roles of immuno-PET/-SPECT in CAR T-cell therapy.Frontiers in medicine · 2023Review
- Positron Emission Tomography (PET)/Computed Tomography (CT) Imaging in Radiation Therapy Treatment Planning: A Review of PET Imaging Tracers and Methods to Incorporate PET/CT.Advances in radiation oncologyReview
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Authors and funding
14 authors at 2 institutions in 1 country.
Funding
Abstract
purposeImmune checkpoint inhibitors (ICI) targeting the programmed cell death protein 1 and its ligand (PD-1/PD-L1) have transformed the treatment paradigm for metastatic renal cell carcinoma (RCC). However, response rates to ICIs as single agents or in combination vary widely and predictive biomarkers are lacking. Possibly related to the heterogeneity and dynamic nature of PD-L1 expression, tissue-based methods have shown limited value. Immuno-positron emission tomography (immunoPET) may enable noninvasive, comprehensive, and real-time PD-L1 detection. Herein, we systematically examined the performance of immunoPET for PD-L1 detection relative to IHC in an RCC patient-derived tumorgraft (TG) platform. EXPERIMENTAL
designEight independent RCC TGs with a wide range of PD-L1 expression (0%-85%) were evaluated by immunoPET. Uptake of 89Zr-labeled atezolizumab ([89Zr]Zr-DFO-ATZ) was compared with PD-L1 expression in tumors by IHC through double-blind analyses. Clinical outcomes of ICI-treated patients whose TGs were examined were analyzed to evaluate the clinical role of immunoPET in RCC.
resultsImmunoPET with [89Zr]Zr-DFO-ATZ (day 6/7 postinjection) revealed a statistically significant association with PD-L1 IHC assays (P = 0.0014; correlation ρXY = 0.78). Furthermore, immunoPET can be used to assess the heterogeneous distribution of PD-L1 expression. Finally, studies in the corresponding patients (n = 4) suggest that PD-L1 signal may influence ICI responsiveness.
conclusionsImmunoPET with [89Zr]Zr-DFO-ATZ may enable a thorough and dynamic assessment of PD-L1 across sites of disease. The power of immunoPET to predict ICI response in RCC is being explored in an ongoing clinical trial (NCT04006522).
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