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Defining pathogenic IL-17 and CSF-1 gene expression signatures in chronic graft-versus-host disease [Naïve]

ABSTRACT: Chronic graft-versus-host disease (cGVHD) remains the leading cause of non-relapse morbidity and mortality after allogeneic hematopoietic cell transplantation (HCT). Effective therapeutics agents targeting dysregulated cytokines including IL-17 and CSF-1 have been defined in preclinical models of cGVHD, and efficacy in subsequent clinical trials has led to their recent FDA approval. Despite this, these agents are effective in only a subset of patients, expensive, difficult to access outside the US, and used in a trial-and-error fashion. The ability to readily discern druggable, dysregulated immunity in these patients is desperately needed to facilitate the selection of appropriate treatment and to potentially identify high-risk individuals for preemptive therapy. We used single cell sequencing-based approaches in our informative preclinical cGVHD models to “reverse engineer” temporal IL-17 and CSF-1 signatures in mouse blood that could be used to interrogate patients. We defined distinct, non-intuitive IL-17 and CSF-1 signatures in mouse blood monocytes that could be identified in relevant monocytes within 70% of patients at diagnosis of cGVHD and in half of patients at day +100 post-HCT who subsequently developed cGVHD. These signatures can now be evaluated prospectively in clinical studies to help delineate potential responder and non-responders to relevant therapeutics targeting these pathways.

ORGANISM(S): Mus musculus

PROVIDER: GSE287420 | GEO | 2025/06/01

REPOSITORIES: GEO

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Defining pathogenic IL-17 and CSF-1 gene expression signatures in chronic graft-versus-host disease [IL-17]

Project description:Chronic graft-versus-host disease (cGVHD) remains the leading cause of non-relapse morbidity and mortality after allogeneic hematopoietic cell transplantation (HCT). Effective therapeutics agents targeting dysregulated cytokines including IL-17 and CSF-1 have been defined in preclinical models of cGVHD, and efficacy in subsequent clinical trials has led to their recent FDA approval. Despite this, these agents are effective in only a subset of patients, expensive, difficult to access outside the US, and used in a trial-and-error fashion. The ability to readily discern druggable, dysregulated immunity in these patients is desperately needed to facilitate the selection of appropriate treatment and to potentially identify high-risk individuals for preemptive therapy. We used single cell sequencing-based approaches in our informative preclinical cGVHD models to “reverse engineer” temporal IL-17 and CSF-1 signatures in mouse blood that could be used to interrogate patients. We defined distinct, non-intuitive IL-17 and CSF-1 signatures in mouse blood monocytes that could be identified in relevant monocytes within 70% of patients at diagnosis of cGVHD and in half of patients at day +100 post-HCT who subsequently developed cGVHD. These signatures can now be evaluated prospectively in clinical studies to help delineate potential responder and non-responders to relevant therapeutics targeting these pathways.

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