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Expert Rev. Mol. Diagn. · Jan 2016
EditorialCompanion diagnostic assays for PD-1/PD-L1 checkpoint inhibitors in NSCLC.
- Jan Trøst Jørgensen.
- a Dx-Rx Institute , Fredensborg , Denmark.
- Expert Rev. Mol. Diagn. 2016 Jan 1; 16 (2): 131-3.
AbstractThe immune checkpoint inhibitors pembrolizumab and nivolumab together with their diagnostic assays have recently been granted market authorization for treatment of advanced non-small-cell lung cancer in the USA. The two assays, PD-L1 IHC 22C3 pharmDx and PD-L1 IHC 28-8 pharmDx (both by Dako, Glostrup, Denmark), are the first PD-L1 IHC assays to obtain regulatory approval through the Premarket Approval process. This approval is supported by recent clinical studies that have shown a positive correlation between PD-L1 expression and the outcome following treatment with different PD-1/PD-L1 checkpoint inhibitors. These diagnostic assays are able to identify the group of non-small-cell lung cancer patients who will benefit most from treatment with the immune checkpoint inhibitors. However, so far, it is only the PD-L1 IHC 22C3 pharmDx assay, which is linked to the use of pembrolizumab, that has obtained regulatory status as a companion diagnostic.
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