Molecular determinants of response to PD-L1 blockade across tumor types

Study ID Alternative Stable ID Type
EGAS00001004343 Other

Study Description

Immune checkpoint inhibitors targeting the PD-1/PD-L1 axis lead to durable clinical responses in subsets of cancer patients across multiple indications, including non-small cell lung cancer (NSCLC), urothelial carcinoma (UC) and renal cell carcinoma (RCC). Herein, we complement PD-L1 immunohistochemistry (IHC) and tumor mutation burden (TMB) with RNA-seq in 366 patients to identify unifying and indication-specific molecular profiles that can predict response to checkpoint blockade across these tumor types. Multiple machine learning approaches failed to identify a baseline transcriptional signature highly predictive of response across these indications. Signatures described previously for immune checkpoint inhibitors also failed to validate. At the pathway level, significant heterogeneity was observed between indications, in particular within the PD-L1+ tumors. mUC and NSCLC were molecularly aligned, with cell cycle and DNA damage repair genes associated with response in PD-L1- tumors. At the gene level, the CDK4/6 inhibitor CDKN2A was identified as a significant transcriptional ... (Show More)

Study Datasets 5 datasets.

Click on a Dataset ID in the table below to learn more, and to find out who to contact about access to these data

Dataset ID Description Technology Samples
Clinical data from IMvigor210, POPLAR, IMmotion150: Clinical data include demographics, tumor type, PD-L1 IHC, tumor mutation burden, objective response rate, overall survival and progression free survival for 611 patients across IMvigor210, POPLAR and IMmotion150. Clinical data from PCD4989g: Clinical data include tumor type, PD-L1 expression and objective response rate for 206 patients from PCD4989g.
RNAseq FASTq files from 817 bulk pre-treatment tumors from three indications (mUC, NSCLC and RCC) across three phase II (IMvigor210, POPLAR, IMmotion150) and a phase I (PCD4989g) clinical trials.
Illumina HiSeq 4000 817
Whole exome sequencing FASTq files from 469 pre-treatment tumors from IMvigor210, POPLAR and IMmotion150, with matched PBMC samples.
Illumina HiSeq 4000 834
Matrices of TPM-normalized counts from RNAseq data for the three phase II clinical trials (IMvigor210, POPLAR, IMmotion150) and the phase I clinical trial PCD4989g.
The file data.RData contains data objects needed to run the .rmd template that generates the manuscript's figures. These include ExpressionSets for the training and test sets, module content and annotations, PCA results, the lasso58 signature with coefficients, and Foundation Medicine CDKN2A copy-number alteration data.

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