10 results on '"Menke-van der Houven van Oordt, C. Willemien"'
Search Results
2. Non-specific irreversible 89Zr-mAb uptake in tumours: evidence from biopsy-proven target-negative tumours using 89Zr-immuno-PET.
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Wijngaarden, Jessica E., Jauw, Yvonne W. S., Zwezerijnen, Gerben J. C., de Wit-van der Veen, Berlinda J., Vugts, Daniëlle J., Zijlstra, Josée M., van Dongen, Guus A. M. S., Boellaard, Ronald, Menke-van der Houven van Oordt, C. Willemien, and Huisman, Marc C.
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TUMORS ,POSITRON emission tomography - Abstract
Background: Distribution of mAbs into tumour tissue may occur via different processes contributing differently to the
89 Zr-mAb uptake on PET. Target-specific binding in tumours is of main interest; however, non-specific irreversible uptake may also be present, which influences quantification. The aim was to investigate the presence of non-specific irreversible uptake in tumour tissue using Patlak linearization on89 Zr-immuno-PET data of biopsy-proven target-negative tumours. Data of two studies, including target status obtained from biopsies, were retrospectively analysed, and Patlak linearization provided the net rate of irreversible uptake (Ki ). Results: Two tumours were classified as CD20-negative and two as CD20-positive. Four tumours were classified as CEA-negative and nine as CEA-positive. Ki values of CD20-negative (0.43 µL/g/h and 0.92 µL/g/h) and CEA-negative tumours (mdn = 1.97 µL/g/h, interquartile range (IQR) = 1.50–2.39) were higher than zero. Median Ki values of target-negative tumours were lower than CD20-positive (1.87 µL/g/h and 1.90 µL/g/h) and CEA-positive tumours (mdn = 2.77 µL/g/h, IQR = 2.11–3.65). Conclusion: Biopsy-proven target-negative tumours showed irreversible uptake of89 Zr-mAbs measured in vivo using89 Zr-immuno-PET data, which suggests the presence of non-specific irreversible uptake in tumours. Consequently, for89 Zr-immuno-PET, even if the target is absent, a tumour-to-plasma ratio always increases over time. [ABSTRACT FROM AUTHOR]- Published
- 2024
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3. How to obtain the image-derived blood concentration from 89Zr-immuno-PET scans.
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Wijngaarden, Jessica E., Ahbari, Amina, Pouw, Johanna E. E., Greuter, Henri N. J. M., Bahce, Idris, Zwezerijnen, Gerben J. C., Vugts, Daniëlle J., van Dongen, Guus A. M. S., Boellaard, Ronald, Menke-van der Houven van Oordt, C. Willemien, and Huisman, Marc C.
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POSITRON emission tomography ,THORACIC aorta ,MONOCLONAL antibodies ,BLOOD sampling ,AORTA ,STANDARD operating procedure - Abstract
Background: PET scans using zirconium-89 labelled monoclonal antibodies (
89 Zr-mAbs), known as89 Zr-immuno-PET, are made to measure uptake in tumour and organ tissue. Uptake is related to the supply of89 Zr-mAbs in the blood. Measuring activity concentrations in blood, however, requires invasive blood sampling. This study aims to identify the best delineation strategy to obtain the image-derived blood concentration (IDBC) from89 Zr-immuno-PET scans. Methods: PET imaging and blood sampling of two89 Zr-mAbs were included,89 Zr-cetuximab and89 Zr-durvalumab. For seven patients receiving89 Zr-cetuximab, PET scans on 1–2 h, 2 and 6 days post-injection (p.i.) were analysed. Five patients received three injections of89 Zr-durvalumab. The scanning protocol for the first two injections consisted of PET scanning on 2, 5 and 7 days p.i. and for the third injection only on 7 days p.i. Blood samples were drawn with every PET scan and the sample-derived blood concentration (SDBC) was used as gold standard for the IDBC. According to an in-house developed standard operating procedure, the aortic arch, ascending aorta, descending aorta and left ventricle were delineated. Bland–Altman analyses were performed to assess the bias (mean difference) and variability (1.96 times the standard deviation of the differences) between IDBC and SDBC. Results: Overall, the activity concentration obtained from the IDBC was lower than from the SDBC. When comparing IDBC with SDBC, variability was smallest for the ascending aorta (20.3% and 17.0% for89 Zr-cetuximab and89 Zr-durvalumab, respectively). Variability for the other regions ranged between 17.9 and 30.8%. Bias for the ascending aorta was − 10.9% and − 11.4% for89 Zr-cetuximab and89 Zr-durvalumab, respectively. Conclusions: Image-derived blood concentrations should be obtained from delineating the ascending aorta in89 Zr-immuno-PET scans, as this results in the lowest variability with respect to sample-derived blood concentrations. [ABSTRACT FROM AUTHOR]- Published
- 2024
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4. 89 Zr-Immuno-PET with Immune Checkpoint Inhibitors: Measuring Target Engagement in Healthy Organs.
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Miedema, Iris H. C., Wijngaarden, Jessica E., Pouw, Johanna E. E., Zwezerijnen, Gerben J. C., Sebus, Hylke J., Smit, Egbert, de Langen, Adrianus J., Bahce, Idris, Thiele, Andrea, Vugts, Daniëlle J., Boellaard, Ronald, Huisman, Marc C., and Menke-van der Houven van Oordt, C. Willemien
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BRAIN ,IMMUNE checkpoint inhibitors ,KIDNEYS ,RADIOISOTOPES ,ORGANS (Anatomy) ,MONOCLONAL antibodies ,IMMUNE system ,BLOOD collection ,POSITRON emission tomography ,RESEARCH funding ,SPLEEN ,BONE marrow - Abstract
Simple Summary: The uptake on a
89 Zr-immuno-PET scan is not just the result of the binding of a radiolabeled antibody with its target (i.e., target engagement) but also includes background factors such as non-specific binding (for example, catabolism of antibodies inside endothelial cells). In this study, we wanted to isolate target engagement. We used data from five previously performed89 Zr-immuno-PET studies with immune-targeting89 Zr-radiolabeled antibodies. First, via Patlak analysis, we separated reversible from irreversible uptake, and by using a baseline of target-negative organs, we further defined target-specific irreversible uptake. Second, we compared different mass doses (ratios of labeled and unlabeled antibody) and looked for saturation effects. Evidence for target engagement was based on the following two things: (1) when the target-specific irreversible uptake exceeded the baseline, and (2) when the signal showed saturation. We found target engagement for the different antibodies in several lymphoid organs, for example, in the spleen, while the brain had close to zero target engagement. We propose a new baseline for bone marrow and brain. In conclusion, we promote the use of Patlak analysis for89 Zr-immuno-PET studies, or similar simplified outcomes such as a tissue-to-blood ratio. Introduction:89 Zr-immuno-PET (positron emission tomography with zirconium-89-labeled monoclonal antibodies ([89 Zr]Zr-mAbs)) can be used to study the biodistribution of mAbs targeting the immune system. The measured uptake consists of target-specific and non-specific components, and it can be influenced by plasma availability of the tracer. To find evidence for target-specific uptake, i.e., target engagement, we studied five immune-checkpoint-targeting [89 Zr]Zr-mAbs to (1) compare the uptake with previously reported baseline values for non-specific organ uptake (ns-baseline) and (2) look for saturation effects of increasing mass doses. Method:89 Zr-immuno-PET data from five [89 Zr]Zr-mAbs, i.e., nivolumab and pembrolizumab (anti-PD-1), durvalumab (anti-PD-L1), BI 754,111 (anti-LAG-3), and ipilimumab (anti-CTLA-4), were analysed. For each mAb, 2–3 different mass doses were evaluated. PET scans and blood samples from at least two time points 24 h post injection were available. In 35 patients, brain, kidneys, liver, spleen, lungs, and bone marrow were delineated. Patlak analysis was used to account for differences in plasma activity concentration and to quantify irreversible uptake (Ki ). To identify target engagement, Ki values were compared to ns-baseline Ki values previously reported, and the effect of increasing mass doses on Ki was investigated. Results: All mAbs, except ipilimumab, showed Ki values in spleen above the ns-baseline for the lowest administered mass dose, in addition to decreasing Ki values with higher mass doses, both indicative of target engagement. For bone marrow, no ns-baseline was established previously, but a similar pattern was observed. For kidneys, most mAbs showed Ki values within the ns-baseline for both low and high mass doses. However, with high mass doses, some saturation effects were seen, suggestive of a lower ns-baseline value. Ki values were near zero in brain tissue for all mass doses of all mAbs. Conclusion: Using Patlak analysis and the established ns-baseline values, evidence for target engagement in (lymphoid) organs for several immune checkpoint inhibitors could be demonstrated. A decrease in the Ki values with increasing mass doses supports the applicability of Patlak analysis for the assessment of target engagement for PET ligands with irreversible uptake behavior. [ABSTRACT FROM AUTHOR]- Published
- 2023
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5. 89Zr-immuno-PET using the anti-LAG-3 tracer [89Zr]Zr-BI 754111: demonstrating target specific binding in NSCLC and HNSCC.
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Miedema, Iris H.C., Huisman, Marc C., Zwezerijnen, Gerben J.C., Grempler, Rolf, Pitarch, Alejandro Perez, Thiele, Andrea, Hesse, Raphael, Elgadi, Mabrouk, Peltzer, Alexander, Vugts, Danielle J., van Dongen, Guus A.M.S., de Gruijl, Tanja D., Menke-van der Houven van Oordt, C. Willemien, and Bahce, Idris
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POSITRON emission tomography ,LYMPHOCYTE transformation ,NON-small-cell lung carcinoma ,RNA sequencing ,ANTINEOPLASTIC agents ,PROGRAMMED cell death 1 receptors - Abstract
Purpose: Although lymphocyte activation gene-3 (LAG-3) directed therapies demonstrate promising clinical anti-cancer activity, only a subset of patients seems to benefit and predictive biomarkers are lacking. Here, we explored the potential use of the anti-LAG-3 antibody tracer [
89 Zr]Zr-BI 754111 as a predictive imaging biomarker and investigated its target specific uptake as well as the correlation of its tumor uptake and the tumor immune infiltration. Methods: Patients with head and neck (N = 2) or lung cancer (N = 4) were included in an imaging substudy of a phase 1 trial with BI 754091 (anti-PD-1) and BI 754111 (anti-LAG-3). After baseline tumor biopsy and [18 F]FDG-PET, patients were given 240 mg of BI 754091, followed 8 days later by administration of [89 Zr]Zr-BI 754111 (37 MBq, 4 mg). PET scans were performed 2 h, 96 h, and 144 h post-injection. To investigate target specificity, a second tracer administration was given two weeks later, this time with pre-administration of 40 (N = 3) or 600 mg (N = 3) unlabeled BI 754111, followed by PET scans at 96 h and 144 h post-injection. Tumor immune cell infiltration was assessed by immunohistochemistry and RNA sequencing. Results: Tracer uptake in tumors was clearly visible at the 4-mg mass dose (tumor-to-plasma ratio 1.63 [IQR 0.37-2.89]) and could be saturated by increasing mass doses (44 mg: 0.67 [IQR 0.50–0.85]; 604 mg: 0.56 [IQR 0.42–0.75]), demonstrating target specificity. Tumor uptake correlated to immune cell-derived RNA signatures. Conclusions: [89 Zr]Zr-BI-754111 PET imaging shows favorable technical and biological characteristics for developing a potential predictive imaging biomarker for LAG-3-directed therapies. Trial registration: ClinicalTrials.gov, NCT03780725. Registered 19 December 2018 [ABSTRACT FROM AUTHOR]- Published
- 2023
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6. Validation of simplified uptake measures against dynamic Patlak Ki for quantification of lesional 89Zr-Immuno-PET antibody uptake.
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Wijngaarden, Jessica E., Huisman, Marc C., Jauw, Yvonne W. S., van Dongen, Guus A. M. S., Greuter, Henri N. J. M., Schuit, Robert C., Cleveland, Matthew, Gootjes, Elske C., Vugts, Daniëlle J., Menke-van der Houven van Oordt, C. Willemien, and Boellaard, Ronald
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POSITRON emission tomography ,MONOCLONAL antibodies ,IMMUNOGLOBULINS - Abstract
Purpose: Positron emission tomography imaging of zirconium-89-labelled monoclonal antibodies (
89 Zr-Immuno-PET) allows for visualisation and quantification of antibody uptake in tumours in vivo. Patlak linearization provides distribution volume (VT ) and nett influx rate (Ki ) values, representing reversible and irreversible uptake, respectively. Standardised uptake value (SUV) and tumour-to-plasma/tumour-to-blood ratio (TPR/TBR) are often used, but their validity depends on the comparability of plasma kinetics and clearances. This study assesses the validity of SUV, TPR and TBR against Patlak Ki for quantifying irreversible89 Zr-Immuno-PET uptake in tumours. Methods: Ten patients received 37 MBq 10 mg89 Zr-anti-EGFR with 500 mg/m2 unlabelled mAbs. Five patients received two doses of 37 MBq89 Zr-anti-HER3: 8–24 mg for the first administration and 24 mg–30 mg/kg for the second. Seven tumours from four patients showed89 Zr-anti-EGFR uptake, and 18 tumours from five patients showed89 Zr-anti-HER3 uptake. SUVpeak, TPRpeak and TBRpeak values were obtained from one to six days p.i. Patlak linearization was applied to tumour time activity curves and plasma samples to obtain Ki . Results: For89 Zr-anti-EGFR, there was a small variability along the linear regression line between SUV (− 0.51–0.57), TPR (− 0.06‒0.11) and TBR (− 0.13‒0.16) on day 6 versus Ki . Similar doses of89 Zr-anti-HER3 showed similar variability for SUV (− 1.3‒1.0), TPR (− 1.1‒0.53) and TBR (− 1.5‒0.72) on day 5 versus Ki . However, for the second administration of89 Zr-anti-HER3 with a large variability in administered mass doses, SUV showed a larger variability (− 1.4‒2.3) along the regression line with Ki , which improved when using TPR (− 0.38–0.32) or TBR (− 0.56‒0.46). Conclusion: SUV, TPR and TBR at late time points were valid for quantifying irreversible lesional89 Zr-Immuno-PET uptake when constant mass doses were administered. However, for variable mass doses, only TPR and TBR provided reliable values for irreversible uptake, but not SUV, because SUV does not take patient and mass dose-specific plasma clearance into account. [ABSTRACT FROM AUTHOR]- Published
- 2023
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7. Molecular imaging of targeted therapies with positron emission tomography: the visualization of personalized cancer care
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Mammatas, Lemonitsa H., Verheul, Henk M. W., Hendrikse, N. Harry, Yaqub, Maqsood, Lammertsma, Adriaan A., and Menke-van der Houven van Oordt, C. Willemien
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- 2015
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8. Optimal imaging time points considering accuracy and precision of Patlak linearization for 89Zr-immuno-PET: a simulation study.
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Wijngaarden, Jessica E., Huisman, Marc C., Pouw, Johanna E. E., Menke-van der Houven van Oordt, C. Willemien, Jauw, Yvonne W. S., and Boellaard, Ronald
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POSITRON emission tomography ,REFERENCE values ,MONOCLONAL antibodies ,BLOOD sampling - Abstract
Purpose: Zirconium-89-immuno-positron emission tomography (
89 Zr-immuno-PET) has enabled visualization of zirconium-89 labelled monoclonal antibody (89 Zr-mAb) uptake in organs and tumors in vivo. Patlak linearization of89 Zr-immuno-PET quantification data allows for separation of reversible and irreversible uptake, by combining multiple blood samples and PET images at different days. As one can obtain only a limited number of blood samples and scans per patient, choosing the optimal time points is important. Tissue activity concentration curves were simulated to evaluate the effect of imaging time points on Patlak results, considering different time points, input functions, noise levels and levels of reversible and irreversible uptake. Methods: Based on89 Zr-mAb input functions and reference values for reversible (VT ) and irreversible (Ki ) uptake from literature, multiple tissue activity curves were simulated. Three different89 Zr-mAb input functions, five time points between 24 and 192 h p.i., noise levels of 5, 10 and 15%, and three reference Ki and VT values were considered. Simulated Ki and VT were calculated (Patlak linearization) for a thousand repetitions. Accuracy and precision of Patlak linearization were evaluated by comparing simulated Ki and VT with reference values. Results: Simulations showed that Ki is always underestimated. Inclusion of time point 24 h p.i. reduced bias and variability in VT , and slightly reduced bias and variability in Ki , as compared to combinations of three later time points. After inclusion of 24 h p.i., minimal differences were found in bias and variability between different combinations of later imaging time points, despite different input functions, noise levels and reference values. Conclusion: Inclusion of a blood sample and PET scan at 24 h p.i. improves accuracy and precision of Patlak results for89 Zr-immuno-PET; the exact timing of the two later time points is not critical. [ABSTRACT FROM AUTHOR]- Published
- 2022
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9. Early 18F-FDG PET/CT Evaluation Shows Heterogeneous Metabolic Responses to Anti-EGFR Therapy in Patients with Metastatic Colorectal Cancer.
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van Helden, Erik J., Hoekstra, Otto S., Boellaard, Ronald, Roth, Chantal, Mulder, Emma R., Verheul, Henk M. W., and Menke-van der Houven van Oordt, C. Willemien
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COLON cancer treatment ,EPIDERMAL growth factor receptors ,METASTASIS ,CETUXIMAB ,TREATMENT duration ,THERAPEUTICS - Abstract
Objective: The aim of this pilot study was to explore intrapatient mixed metabolic response and early
18 F-FDG PET response evaluation using predefined quantification strategies in patients with advanced KRAS wild-type colorectal adenocarcinoma (mCRC) treated with cetuximab. Methods: A18 F-FDG PET was performed at baseline and after 2 cycles of cetuximab. Metabolic response was categorized using thresholds suggested in PERCIST. Quantitative analysis was done for the sum of all target lesions, ≤ 5 lesions and the metabolically most active lesion per PET. Quantitative data were correlated with clinical benefit, according to RECIST v1.1, after two months of treatment. Results: In nine evaluable patients the total number of target lesions was 34 (1–8 per patient). Mixed metabolic response was observed in three out of seven patients with multiple target lesions, using TLG. Dichotomised metabolic data of the sum of all or ≤ 5 lesions had a concordance with clinical benefit of 89% using SULmax or SULpeak, and 100% using TLG. Evaluating the metabolically most active lesion, concordance was 89% for all three units. Additionally, the decrease in TLG was significantly correlated with PFS for all three quantification strategies. Conclusion: Mixed metabolic response was observed in nearly half of the patients with advanced KRAS wild-type mCRC treated with cetuximab. If ≤ 5 target lesions were evaluated using TLG clinical benefit was predicted correctly for all patients. Moreover, decrease in TLG is significantly correlated with the duration of PFS. Validation of these promising preliminary results in a larger cohort is currently on-going. Trial Registration: ClinicalTrials.gov [ABSTRACT FROM AUTHOR]- Published
- 2016
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10. Current state and upcoming opportunities for immunoPET biomarkers in lung cancer.
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Slebe, Maarten, Pouw, Johanna E.E., Hashemi, Sayed M.S., Menke-van der Houven van Oordt, C. Willemien, Yaqub, Maqsood M., and Bahce, Idris
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TUMOR markers , *LUNG cancer , *NON-small-cell lung carcinoma , *POSITRON emission tomography , *TUMOR microenvironment - Abstract
• An overview of relevant PET imaging targets in the tumor microenvironment. • Features and clinical validation of immunoPET tracers in NSCLC. • Challenges and upcoming opportunities for immunoPET. Immune oncology therapy (IO) has now become an important treatment option for patients with a non-small cell lung cancer (NSCLC). However, a substantial proportion of patients still fails to benefit from IO. Predictive biomarkers and biomarkers that provide insights in the biological processes at the tumor microenvironment (TME) level could enhance the beneficial impact of IO, and lead to improved drug development strategies. Immune positron emission tomography (immunoPET) has the potential to provide such biomarkers, by using highly-specific, radiolabeled tracers to investigate key targets in the TME with PET imaging. This review will highlight developments in immunoPET biomarkers, and the corresponding tracers and radionuclides used in cancer, and more specifically NSCLC. We will focus on available clinical tracers as well as those under development, providing an overview of each TME target, and the available clinical validation. Recent advances that could improve immunoPET in the upcoming years will be discussed. [ABSTRACT FROM AUTHOR]
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- 2022
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