Abstract
PD-L1 immunohistochemistry correlates only moderately with patient survival and response to PD-(L)1 treatment. Heterogeneity of tumor PD-L1 expression might limit the predictive value of small biopsies. Here we show that tumor PD-L1 and PD-1 expression can be quantified non-invasively using PET-CT in patients with non-small-cell lung cancer. Whole body PD-(L)1 PET-CT reveals significant tumor tracer uptake heterogeneity both between patients, as well as within patients between different tumor lesions.
MeSH terms
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B7-H1 Antigen / metabolism*
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Carcinoma, Non-Small-Cell Lung / diagnostic imaging*
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Carcinoma, Non-Small-Cell Lung / drug therapy
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Humans
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Lung Neoplasms / diagnostic imaging*
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Lung Neoplasms / drug therapy
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Nivolumab / pharmacokinetics
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Positron-Emission Tomography*
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Programmed Cell Death 1 Receptor / metabolism*
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Radiopharmaceuticals / pharmacokinetics
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Tissue Distribution
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Treatment Outcome
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Whole Body Imaging*
Substances
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B7-H1 Antigen
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CD274 protein, human
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PDCD1 protein, human
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Programmed Cell Death 1 Receptor
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Radiopharmaceuticals
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Nivolumab