Programmed Death-Ligand 1 Heterogeneity and Its Impact on Benefit From Immune Checkpoint Inhibitors in NSCLC

Programmed death-ligand 1 (PD-L1) expression may vary in different disease sites and at different time points of the disease course. We aimed to investigate PD-L1 heterogeneity and its usefulness as a predictive value for immune checkpoint inhibitor (ICI) therapy in patients with NSCLC. PD-L1 expres...

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Published in:Journal of thoracic oncology 2020-09, Vol.15 (9), p.1449-1459
Main Authors: Hong, Lingzhi, Negrao, Marcelo V., Dibaj, Seyedeh S., Chen, Runzhe, Reuben, Alexandre, Bohac, Jadi M., Liu, Xiaoke, Skoulidis, Ferdinandos, Gay, Carl M., Cascone, Tina, Mitchell, Kyle G., Tran, Hai T., Le, Xiuning, Byers, Lauren A., Sepesi, Boris, Altan, Mehmet, Elamin, Yasir Y., Fossella, Frank V., Kurie, Jonathan M., Lu, Charles, Mott, Frank E., Tsao, Anne S., Rinsurongkawong, Waree, Lewis, Jeff, Gibbons, Don L., Glisson, Bonnie S., Blumenschein, George R., Roarty, Emily B., Futreal, P. Andrew, Wistuba, Ignacio I., Roth, Jack A., Swisher, Stephen G., Papadimitrakopoulou, Vassiliki A., Heymach, John V., Lee, J. Jack, Simon, George R., Zhang, Jianjun
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Language:eng
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Summary:Programmed death-ligand 1 (PD-L1) expression may vary in different disease sites and at different time points of the disease course. We aimed to investigate PD-L1 heterogeneity and its usefulness as a predictive value for immune checkpoint inhibitor (ICI) therapy in patients with NSCLC. PD-L1 expression was analyzed in 1398 patients with NSCLC. The predictive value of PD-L1 for ICIs in 398 patients with metastatic NSCLC was assessed. PD-L1 was significantly associated with biopsy sites (p = 0.004). Adrenal, liver, and lymph node (LN) metastases had the highest PD-L1 expression as a continuous variable and at 1% or 50% cutoff. PD-L1 expression was lower in bone and brain metastases. Among 112 patients with two specimens tested, 55 (49%) had major changes in PD-L1 falling into different clinically relevant categories (
ISSN:1556-0864
1556-1380