ReviewCellular & molecular immunology2018
IDO1 in cancer: a Gemini of immune checkpoints.
Review in Cellular & molecular immunology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 274 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
274 citing papers in PubMed, 3 syntheses or guidelines pooled it, 455 citations in OpenAlex.
- Exercise-induced adaptations in the kynurenine pathway: implications for health and disease management.Frontiers in sports and active living · 2025Pooled it
- Prognostic role of indoleamine 2,3-dioxygenase 1 expression in solid tumors: A systematic review and meta-analysis.Frontiers in oncology · 2022Pooled it
- Non-Coding RNAs Implicated in the Tumor Microenvironment of Colorectal Cancer: Roles, Mechanisms and Clinical Study.Frontiers in oncology · 2022Pooled it
- Integrative Immune Signature of Complementary Circulating and Tumoral Biomarkers Maximizes the Predictive Power of Adjuvant Immunotherapeutic Benefits in High-risk Melanoma.Clinical cancer research : an official journal of the American Association for Cancer Research · 2025Trial
- Phase I/II sequencing study of azacitidine, epacadostat, and pembrolizumab in advanced solid tumors.British journal of cancer · 2023Trial
- Targeting the Tumor Microenvironment Network to Overcome Immunotherapy Resistance in Non-Small Cell Lung Cancer: Mechanisms to Clinical Translation.Cancer medicine · 2026Review
- Myeloid-derived suppressor cells in cancer: biology, regulatory networks and theranostic prospects.Signal transduction and targeted therapy · 2026Review
- Spatial habitat radiomics predicts tertiary lymphoid structure status and identifies an IDO1Journal for immunotherapy of cancer · 2026Article
- Phase I Evaluation of Patients with Newly Diagnosed Glioblastoma Treated with Radiation, Nivolumab, and IDO1 Enzyme Inhibitor BMS-986205.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026Article
- Proteogenomic characterization of pulmonary large-cell neuroendocrine carcinoma identifies molecular features and therapeutic strategy.Science advances · 2026Article
- Article
- IDO1 Silencing Enhances Cisplatin Sensitivity in Gastric Cancer Cells via Modulation of Apoptosis and Oxidative Stress.Current issues in molecular biology · 2026Article
- scRNA-seq and genomics analyses reveal key mechanisms of inverted papilloma-associated sinonasal squamous cell carcinoma malignant transformation.bioRxiv : the preprint server for biology · 2026Article
- A novel photosensitizer-based photodynamic therapy reprograms the Kynurenine-AhR axis to boost antitumor immunity in breast cancer.Redox biology · 2026Article
- HCellular & molecular biology letters · 2026Article
- Metabolic pattern changes of macrophages during cancer development and progression.Journal of translational medicine · 2026Review
- Tumor Anti-Angiogenesis Therapy and Its Influence on Immune Cell Function in the Tumor Microenvironment.Cancer medicine · 2026Review
- TOPK Inhibition Promotes Anti-Tumor Immunity Via eIF4F Complex Mediated STAT1 Translation in Gastric Cancer.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Mechanisms of Metabolic Reprogramming Regulating Immunosuppression in the Gastric Cancer Tumor Microenvironment.Biomolecules · 2026Review
- Metabolic characteristics in hepatocellular carcinoma: amino acid metabolic reprogramming.Molecular cancer · 2026Review
214 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 2 institutions in 1 country.
Funding
Abstract
Indoleamine 2, 3-dioxygenase 1 (IDO1) is a rate-limiting metabolic enzyme that converts the essential amino acid tryptophan (Trp) into downstream catabolites known as kynurenines. Coincidently, numerous studies have demonstrated that IDO1 is highly expressed in multiple types of human cancer. Preclinical studies have further introduced an interesting paradox: while single-agent treatment with IDO1 enzyme inhibitor has a negligible effect on decreasing the established cancer burden, approaches combining select therapies with IDO1 blockade tend to yield a synergistic benefit against tumor growth and/or animal subject survival. Given the high expression of IDO1 among multiple cancer types along with the lack of monotherapeutic efficacy, these data suggest that there is a more complex mechanism of action than previously appreciated. Similar to the dual faces of the astrological Gemini, we highlight the multiple roles of IDO1 and review its canonical association with IDO1-dependent tryptophan metabolism, as well as documented evidence confirming the dispensability of enzyme activity for its immunosuppressive effects. The gene transcript levels for IDO1 highlight its strong association with T-cell infiltration, but the lack of a universal prognostic significance among all cancer subtypes. Finally, ongoing clinical trials are discussed with consideration of IDO1-targeting strategies that enhance the efficacy of immunotherapy for cancer patients.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.