Biomarkers Associated with Beneficial PD-1 Checkpoint Blockade in Non-Small Cell Lung Cancer (NSCLC) Identified Using High-Plex Digital Spatial Profiling
- PMID: 32253229
- PMCID: PMC7442721
- DOI: 10.1158/1078-0432.CCR-20-0175
Biomarkers Associated with Beneficial PD-1 Checkpoint Blockade in Non-Small Cell Lung Cancer (NSCLC) Identified Using High-Plex Digital Spatial Profiling
Abstract
Purpose: Only a minority of patients with advanced non-small cell lung cancer (NSCLC) truly benefits from single-agent PD-1 checkpoint blockade, and more robust predictive biomarkers are needed.
Experimental design: We assessed tumor samples from 67 immunotherapy-treated NSCLC cases represented in a tissue microarray, 53 of whom had pretreatment samples and received monotherapy. Using GeoMx Digital Spatial Profiling System (NanoString Technologies), we quantified 39 immune parameters simultaneously in four tissue compartments defined by fluorescence colocalization [tumor (panCK+), leucocytes (CD45+), macrophages (CD68+), and nonimmune stroma].
Results: A total of 156 protein variables were generated per case. In the univariate unadjusted analysis, we found 18 markers associated with outcome in spatial context, five of which remained significant after multiplicity adjustment. In the multivariate analysis, high levels of CD56 and CD4 measured in the CD45 compartment were the only markers that were predictive for all clinical outcomes, including progression-free survival (PFS, HR: 0.24, P = 0.006; and HR: 0.31, P = 0.011, respectively), and overall survival (OS, HR: 0.26, P = 0.014; and HR: 0.23, P = 0.007, respectively). Then, using an orthogonal method based on multiplex immunofluorescence and cell counting (inForm), we validated that high CD56+ immune cell counts in the stroma were associated with PFS and OS in the same cohort.
Conclusions: This pilot scale discovery study shows the potential of the digital spatial profiling technology in the identification of spatially informed biomarkers of response to PD-1 checkpoint blockade in NSCLC. We identified a number of relevant candidate immune predictors in spatial context that deserve validation in larger independent cohorts.
©2020 American Association for Cancer Research.
Conflict of interest statement
Potential conflict of interest statement
J. Zugazagoitia has received consulting honoraria from Guardant Health, speaker fees from Roche, Pfizer, Guardant Health, and NanoString, and travel fees from Roche.
Kit Fuhrman is NanoString employee.
Roy Herbst has served as a consultant for Abbvie Pharmaceuticals, AstraZeneca, Biodesix, Bristol-Myers Squibb, Eli Lilly and Company, EMD Serrano, Genentech/Roche, Heat Biologics, Loxo Oncology, Merck and Company, Nektar, NextCure, Novartis, Pfizer, Sanofi, Seattle Genetics, Shire PLC, Spectrum Pharmaceuticals, Symphogen, and Tesaro. He has received research support from AstraZeneca, Eli Lilly and Company, and Merck and Company
Kurt Schalper has served as a consultant, advisor or served on a Scientific Advisory Board for Clinical Alemana de Santiago, Celgene, Moderna Therapeutics and Shattuck Labs, Agenus, Torque Therapeutics, Pierre-Fabre, Dynamo Therapeutics, EMD Serono, Astra Zeneca. He has received research funding from Genoptix/Navigate (Novartis), Vasculox/Tioma, Tesaro, Onkaido Therapeutics, Takeda Pharmaceuticals, Surface Oncology, Pierre-Fabre Research Institute, Merck, Bristol-Myers Squibb, Astra Zeneca, Eli Lilly.
David Rimm has served as a consultant, advisor or served on a Scientific Advisory Board for Amgen, Astra Zeneca, Agendia, Biocept, BMS, Cell Signaling Technology, Cepheid, Daiichi Sankyo, GSK, Lilly, Merck, NanoString, Perkin Elmer, PAIGE, Ventana and Ultivue. He has received research funding or instrument support from Astra Zeneca, Cepheid, NanoString, Navigate/Novartis, NextCure, Lilly, Ultivue, and Perkin Elmer.
The remaining authors declare no conflicts of interest.
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