IL17A Gene

HGNC Family Interleukins (IL)
Name interleukin 17A
Description This gene is a member of the IL-17 receptor family which includes five members (IL-17RA-E) and the encoded protein is a proinflammatory cytokine produced by activated T cells. IL-17A-mediated downstream pathways induce the production of inflammatory molecules, chemokines, antimicrobial peptides, and remodeling proteins. The encoded protein elicits crucial impacts on host defense, cell trafficking, immune modulation, and tissue repair, with a key role in the induction of innate immune defenses. This cytokine stimulates non-hematopoietic cells and promotes chemokine production thereby attracting myeloid cells to inflammatory sites. This cytokine also regulates the activities of NF-kappaB and mitogen-activated protein kinases and can stimulate the expression of IL6 and cyclooxygenase-2 (PTGS2/COX-2), as well as enhance the production of nitric oxide (NO). IL-17A plays a pivotal role in various infectious diseases, inflammatory and autoimmune disorders, and cancer. High levels of this cytokine are associated with several chronic inflammatory diseases including rheumatoid arthritis, psoriasis and multiple sclerosis. The lung damage induced by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is to a large extent, a result of the inflammatory response promoted by cytokines such as IL17A. [provided by RefSeq, Sep 2020]
Summary
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In addition, defects in IL‐17A production—as observed in patients with hyper-IgE syndrome harboring STAT3 mutations—underscore its critical role in host defense and immunoregulation."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "10"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nBeyond its role in adaptive immunity, IL‐17A orchestrates responses at epithelial and stromal interfaces by inducing chemokine and cytokine production that mobilizes neutrophils and other innate effectors. In the skin, for instance, IL‐17A produced by various cell types—including dermal γδ T cells, mast cells, and even innate lymphocytes—drives the production of CCL20 and other inflammatory mediators that sustain chronic conditions like psoriasis. Similar mechanisms are implicated in other inflammatory settings, such as severe asthma, where IL‐17A contributes to neutrophilic infiltration and steroid resistance, and studies further reveal that IL‐17 signaling is tightly regulated by both activating and inhibitory pathways."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "11", "end_ref": "17"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIL‐17A also occupies a dual role in host defense and disease pathology. While it enhances antimicrobial responses by promoting neutrophil recruitment—thereby accelerating clearance of pathogens such as pneumococci—it can also drive collateral tissue damage in chronic conditions including rheumatoid arthritis, atherosclerosis, and even certain cancers. In the tumor microenvironment, for example, IL‐17A released from stromal or immune cells contributes to the maintenance of cancer-initiating cell niches and the recruitment of myeloid cells, thereby indirectly promoting tumor progression. Similarly, in conditions like alcoholic liver disease and other inflammatory pathologies, aberrant IL‐17A signaling leads to uncontrolled cytokine cascades and tissue injury."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "18", "end_ref": "28"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Eva V Acosta-Rodriguez, Laura Rivino, Jens Geginat, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "Chemotherapy activates cancer-associated fibroblasts to maintain colorectal cancer-initiating cells by IL-17A."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Exp Med (2013)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1084/jem.20131195"}], "href": "https://doi.org/10.1084/jem.20131195"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "24323355"}], "href": "https://pubmed.ncbi.nlm.nih.gov/24323355"}]}, {"type": "r", "ref": 28, "children": [{"type": "t", "text": "Julie Chesné, Faouzi Braza, Guillaume Mahay, et al. "}, {"type": "b", "children": [{"type": "t", "text": "IL-17 in severe asthma. Where do we stand?"}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Am J Respir Crit Care Med (2014)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1164/rccm.201405-0859PP"}], "href": "https://doi.org/10.1164/rccm.201405-0859PP"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "25162311"}], "href": "https://pubmed.ncbi.nlm.nih.gov/25162311"}]}]}]}
Synonyms CTLA8, IL-17, IL17, IL-17A, CTLA-8
Proteins IL17_HUMAN
NCBI Gene ID 3605
API
Download Associations
Predicted Functions View IL17A's ARCHS4 Predicted Functions.
Co-expressed Genes View IL17A's ARCHS4 Predicted Functions.
Expression in Tissues and Cell Lines View IL17A's ARCHS4 Predicted Functions.

Functional Associations

IL17A has 7,936 functional associations with biological entities spanning 8 categories (molecular profile, organism, chemical, functional term, phrase or reference, disease, phenotype or trait, structural feature, cell line, cell type or tissue, gene, protein or microRNA) extracted from 89 datasets.

Click the + buttons to view associations for IL17A from the datasets below.

If available, associations are ranked by standardized value

Dataset Summary
Achilles Cell Line Gene Essentiality Profiles cell lines with fitness changed by IL17A gene knockdown relative to other cell lines from the Achilles Cell Line Gene Essentiality Profiles dataset.
Allen Brain Atlas Adult Human Brain Tissue Gene Expression Profiles tissues with high or low expression of IL17A gene relative to other tissues from the Allen Brain Atlas Adult Human Brain Tissue Gene Expression Profiles dataset.
Allen Brain Atlas Adult Mouse Brain Tissue Gene Expression Profiles tissues with high or low expression of IL17A gene relative to other tissues from the Allen Brain Atlas Adult Mouse Brain Tissue Gene Expression Profiles dataset.
Allen Brain Atlas Developing Human Brain Tissue Gene Expression Profiles by Microarray tissue samples with high or low expression of IL17A gene relative to other tissue samples from the Allen Brain Atlas Developing Human Brain Tissue Gene Expression Profiles by Microarray dataset.
Allen Brain Atlas Prenatal Human Brain Tissue Gene Expression Profiles tissues with high or low expression of IL17A gene relative to other tissues from the Allen Brain Atlas Prenatal Human Brain Tissue Gene Expression Profiles dataset.
BioGPS Cell Line Gene Expression Profiles cell lines with high or low expression of IL17A gene relative to other cell lines from the BioGPS Cell Line Gene Expression Profiles dataset.
BioGPS Human Cell Type and Tissue Gene Expression Profiles cell types and tissues with high or low expression of IL17A gene relative to other cell types and tissues from the BioGPS Human Cell Type and Tissue Gene Expression Profiles dataset.
BioGPS Mouse Cell Type and Tissue Gene Expression Profiles cell types and tissues with high or low expression of IL17A gene relative to other cell types and tissues from the BioGPS Mouse Cell Type and Tissue Gene Expression Profiles dataset.
CCLE Cell Line Gene CNV Profiles cell lines with high or low copy number of IL17A gene relative to other cell lines from the CCLE Cell Line Gene CNV Profiles dataset.
CCLE Cell Line Gene Expression Profiles cell lines with high or low expression of IL17A gene relative to other cell lines from the CCLE Cell Line Gene Expression Profiles dataset.
CellMarker Gene-Cell Type Associations cell types associated with IL17A gene from the CellMarker Gene-Cell Type Associations dataset.
ChEA Transcription Factor Binding Site Profiles transcription factor binding site profiles with transcription factor binding evidence at the promoter of IL17A gene from the CHEA Transcription Factor Binding Site Profiles dataset.
ChEA Transcription Factor Targets transcription factors binding the promoter of IL17A gene in low- or high-throughput transcription factor functional studies from the CHEA Transcription Factor Targets dataset.
ChEA Transcription Factor Targets 2022 transcription factors binding the promoter of IL17A gene in low- or high-throughput transcription factor functional studies from the CHEA Transcription Factor Targets 2022 dataset.
CMAP Signatures of Differentially Expressed Genes for Small Molecules small molecule perturbations changing expression of IL17A gene from the CMAP Signatures of Differentially Expressed Genes for Small Molecules dataset.
COMPARTMENTS Curated Protein Localization Evidence Scores cellular components containing IL17A protein from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset.
COMPARTMENTS Text-mining Protein Localization Evidence Scores cellular components co-occuring with IL17A protein in abstracts of biomedical publications from the COMPARTMENTS Text-mining Protein Localization Evidence Scores dataset.
COSMIC Cell Line Gene CNV Profiles cell lines with high or low copy number of IL17A gene relative to other cell lines from the COSMIC Cell Line Gene CNV Profiles dataset.
COSMIC Cell Line Gene Mutation Profiles cell lines with IL17A gene mutations from the COSMIC Cell Line Gene Mutation Profiles dataset.
CTD Gene-Chemical Interactions chemicals interacting with IL17A gene/protein from the curated CTD Gene-Chemical Interactions dataset.
CTD Gene-Disease Associations diseases associated with IL17A gene/protein from the curated CTD Gene-Disease Associations dataset.
dbGAP Gene-Trait Associations traits associated with IL17A gene in GWAS and other genetic association datasets from the dbGAP Gene-Trait Associations dataset.
DepMap CRISPR Gene Dependency cell lines with fitness changed by IL17A gene knockdown relative to other cell lines from the DepMap CRISPR Gene Dependency dataset.
DISEASES Curated Gene-Disease Association Evidence Scores 2025 diseases involving IL17A gene from the DISEASES Curated Gene-Disease Association Evidence Scores 2025 dataset.
DISEASES Experimental Gene-Disease Association Evidence Scores 2025 diseases associated with IL17A gene in GWAS datasets from the DISEASES Experimental Gene-Disease Assocation Evidence Scores 2025 dataset.
DISEASES Text-mining Gene-Disease Association Evidence Scores diseases co-occuring with IL17A gene in abstracts of biomedical publications from the DISEASES Text-mining Gene-Disease Assocation Evidence Scores dataset.
DISEASES Text-mining Gene-Disease Association Evidence Scores 2025 diseases co-occuring with IL17A gene in abstracts of biomedical publications from the DISEASES Text-mining Gene-Disease Assocation Evidence Scores 2025 dataset.
DisGeNET Gene-Disease Associations diseases associated with IL17A gene in GWAS and other genetic association datasets from the DisGeNET Gene-Disease Associations dataset.
DisGeNET Gene-Phenotype Associations phenotypes associated with IL17A gene in GWAS and other genetic association datasets from the DisGeNET Gene-Phenoptype Associations dataset.
ENCODE Histone Modification Site Profiles histone modification site profiles with high histone modification abundance at IL17A gene from the ENCODE Histone Modification Site Profiles dataset.
ENCODE Transcription Factor Binding Site Profiles transcription factor binding site profiles with transcription factor binding evidence at the promoter of IL17A gene from the ENCODE Transcription Factor Binding Site Profiles dataset.
ENCODE Transcription Factor Targets transcription factors binding the promoter of IL17A gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset.
ESCAPE Omics Signatures of Genes and Proteins for Stem Cells PubMedIDs of publications reporting gene signatures containing IL17A from the ESCAPE Omics Signatures of Genes and Proteins for Stem Cells dataset.
GAD Gene-Disease Associations diseases associated with IL17A gene in GWAS and other genetic association datasets from the GAD Gene-Disease Associations dataset.
GDSC Cell Line Gene Expression Profiles cell lines with high or low expression of IL17A gene relative to other cell lines from the GDSC Cell Line Gene Expression Profiles dataset.
GeneRIF Biological Term Annotations biological terms co-occuring with IL17A gene in literature-supported statements describing functions of genes from the GeneRIF Biological Term Annotations dataset.
GeneSigDB Published Gene Signatures PubMedIDs of publications reporting gene signatures containing IL17A from the GeneSigDB Published Gene Signatures dataset.
GEO Signatures of Differentially Expressed Genes for Diseases disease perturbations changing expression of IL17A gene from the GEO Signatures of Differentially Expressed Genes for Diseases dataset.
GEO Signatures of Differentially Expressed Genes for Gene Perturbations gene perturbations changing expression of IL17A gene from the GEO Signatures of Differentially Expressed Genes for Gene Perturbations dataset.
GEO Signatures of Differentially Expressed Genes for Kinase Perturbations kinase perturbations changing expression of IL17A gene from the GEO Signatures of Differentially Expressed Genes for Kinase Perturbations dataset.
GEO Signatures of Differentially Expressed Genes for Small Molecules small molecule perturbations changing expression of IL17A gene from the GEO Signatures of Differentially Expressed Genes for Small Molecules dataset.
GEO Signatures of Differentially Expressed Genes for Transcription Factor Perturbations transcription factor perturbations changing expression of IL17A gene from the GEO Signatures of Differentially Expressed Genes for Transcription Factor Perturbations dataset.
GEO Signatures of Differentially Expressed Genes for Viral Infections virus perturbations changing expression of IL17A gene from the GEO Signatures of Differentially Expressed Genes for Viral Infections dataset.
GO Biological Process Annotations 2015 biological processes involving IL17A gene from the curated GO Biological Process Annotations 2015 dataset.
GO Biological Process Annotations 2023 biological processes involving IL17A gene from the curated GO Biological Process Annotations 2023 dataset.
GO Cellular Component Annotations 2015 cellular components containing IL17A protein from the curated GO Cellular Component Annotations 2015 dataset.
GO Molecular Function Annotations 2015 molecular functions performed by IL17A gene from the curated GO Molecular Function Annotations 2015 dataset.
GO Molecular Function Annotations 2023 molecular functions performed by IL17A gene from the curated GO Molecular Function Annotations 2023 dataset.
GTEx Tissue Gene Expression Profiles tissues with high or low expression of IL17A gene relative to other tissues from the GTEx Tissue Gene Expression Profiles dataset.
GTEx Tissue Gene Expression Profiles 2023 tissues with high or low expression of IL17A gene relative to other tissues from the GTEx Tissue Gene Expression Profiles 2023 dataset.
GWASdb SNP-Disease Associations diseases associated with IL17A gene in GWAS and other genetic association datasets from the GWASdb SNP-Disease Associations dataset.
GWASdb SNP-Phenotype Associations phenotypes associated with IL17A gene in GWAS datasets from the GWASdb SNP-Phenotype Associations dataset.
Heiser et al., PNAS, 2011 Cell Line Gene Expression Profiles cell lines with high or low expression of IL17A gene relative to other cell lines from the Heiser et al., PNAS, 2011 Cell Line Gene Expression Profiles dataset.
HPA Tissue Gene Expression Profiles tissues with high or low expression of IL17A gene relative to other tissues from the HPA Tissue Gene Expression Profiles dataset.
HPA Tissue Protein Expression Profiles tissues with high or low expression of IL17A protein relative to other tissues from the HPA Tissue Protein Expression Profiles dataset.
Hub Proteins Protein-Protein Interactions interacting hub proteins for IL17A from the curated Hub Proteins Protein-Protein Interactions dataset.
HuGE Navigator Gene-Phenotype Associations phenotypes associated with IL17A gene by text-mining GWAS publications from the HuGE Navigator Gene-Phenotype Associations dataset.
IMPC Knockout Mouse Phenotypes phenotypes of mice caused by IL17A gene knockout from the IMPC Knockout Mouse Phenotypes dataset.
InterPro Predicted Protein Domain Annotations protein domains predicted for IL17A protein from the InterPro Predicted Protein Domain Annotations dataset.
JASPAR Predicted Transcription Factor Targets transcription factors regulating expression of IL17A gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Transcription Factor Targets dataset.
KEGG Pathways pathways involving IL17A protein from the KEGG Pathways dataset.
Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles cell lines with high or low copy number of IL17A gene relative to other cell lines from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles dataset.
Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene Mutation Profiles cell lines with IL17A gene mutations from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene Mutation Profiles dataset.
KnockTF Gene Expression Profiles with Transcription Factor Perturbations transcription factor perturbations changing expression of IL17A gene from the KnockTF Gene Expression Profiles with Transcription Factor Perturbations dataset.
LINCS L1000 CMAP Chemical Perturbation Consensus Signatures small molecule perturbations changing expression of IL17A gene from the LINCS L1000 CMAP Chemical Perturbations Consensus Signatures dataset.
LOCATE Predicted Protein Localization Annotations cellular components predicted to contain IL17A protein from the LOCATE Predicted Protein Localization Annotations dataset.
MGI Mouse Phenotype Associations 2023 phenotypes of transgenic mice caused by IL17A gene mutations from the MGI Mouse Phenotype Associations 2023 dataset.
MiRTarBase microRNA Targets microRNAs targeting IL17A gene in low- or high-throughput microRNA targeting studies from the MiRTarBase microRNA Targets dataset.
MotifMap Predicted Transcription Factor Targets transcription factors regulating expression of IL17A gene predicted using known transcription factor binding site motifs from the MotifMap Predicted Transcription Factor Targets dataset.
MPO Gene-Phenotype Associations phenotypes of transgenic mice caused by IL17A gene mutations from the MPO Gene-Phenotype Associations dataset.
MSigDB Signatures of Differentially Expressed Genes for Cancer Gene Perturbations gene perturbations changing expression of IL17A gene from the MSigDB Signatures of Differentially Expressed Genes for Cancer Gene Perturbations dataset.
PANTHER Pathways pathways involving IL17A protein from the PANTHER Pathways dataset.
Pathway Commons Protein-Protein Interactions interacting proteins for IL17A from the Pathway Commons Protein-Protein Interactions dataset.
PerturbAtlas Signatures of Differentially Expressed Genes for Mouse Gene Perturbations gene perturbations changing expression of IL17A gene from the PerturbAtlas Signatures of Differentially Expressed Genes for Gene Perturbations dataset.
PFOCR Pathway Figure Associations 2023 pathways involving IL17A protein from the PFOCR Pathway Figure Associations 2023 dataset.
PFOCR Pathway Figure Associations 2024 pathways involving IL17A protein from the Wikipathways PFOCR 2024 dataset.
PID Pathways pathways involving IL17A protein from the PID Pathways dataset.
Reactome Pathways 2024 pathways involving IL17A protein from the Reactome Pathways 2024 dataset.
Roadmap Epigenomics Histone Modification Site Profiles histone modification site profiles with high histone modification abundance at IL17A gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset.
RummaGEO Drug Perturbation Signatures drug perturbations changing expression of IL17A gene from the RummaGEO Drug Perturbation Signatures dataset.
RummaGEO Gene Perturbation Signatures gene perturbations changing expression of IL17A gene from the RummaGEO Gene Perturbation Signatures dataset.
Tabula Sapiens Gene-Cell Associations cell types with high or low expression of IL17A gene relative to other cell types from the Tabula Sapiens Gene-Cell Associations dataset.
TargetScan Predicted Conserved microRNA Targets microRNAs regulating expression of IL17A gene predicted using conserved miRNA seed sequences from the TargetScan Predicted Conserved microRNA Targets dataset.
TargetScan Predicted Nonconserved microRNA Targets microRNAs regulating expression of IL17A gene predicted using nonconserved miRNA seed sequences from the TargetScan Predicted Nonconserved microRNA Targets dataset.
TCGA Signatures of Differentially Expressed Genes for Tumors tissue samples with high or low expression of IL17A gene relative to other tissue samples from the TCGA Signatures of Differentially Expressed Genes for Tumors dataset.
TISSUES Curated Tissue Protein Expression Evidence Scores tissues with high expression of IL17A protein from the TISSUES Curated Tissue Protein Expression Evidence Scores dataset.
TISSUES Text-mining Tissue Protein Expression Evidence Scores tissues co-occuring with IL17A protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores dataset.
WikiPathways Pathways 2014 pathways involving IL17A protein from the Wikipathways Pathways 2014 dataset.
WikiPathways Pathways 2024 pathways involving IL17A protein from the WikiPathways Pathways 2024 dataset.