ArticleNeuro-oncology2024
Indoximod-based chemo-immunotherapy for pediatric brain tumors: A first-in-children phase I trial.
Article in Neuro-oncology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 40 papers, 2 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.
A Phase I Trial of Indoximod and Temozolomide-Based Therapy for Children With Progressive Primary Brain Tumors
Phase 2 Trial of Indoximod With Chemotherapy and Radiation for Children With Progressive Brain Tumors or Newly Diagnosed DIPG
Repurposing Ibrutinib for Chemo-Immunotherapy in a Phase 1b Study of Ibrutinib With Indoximod Plus Metronomic Cyclophosphamide and Etoposide for Pediatric Patients With Brain Cancer
Who cites it
40 citing papers in PubMed, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.
- Outcomes of immunotherapy in medulloblastoma: a systematic review.The oncologist · 2026Pooled it
- Biological function of d-tryptophan: a bibliometric analysis and review.Frontiers in microbiology · 2024Pooled it
- Metabolic immune checkpoints (MICs) in cancer: from molecular mechanisms to challenges and opportunities in clinical translation.Signal transduction and targeted therapy · 2026Review
- Phase 1 study of KHK2455, a long-acting, potent and selective IDO1 inhibitor, in combination with avelumab in patients with locally advanced or metastatic urothelial carcinoma.Journal for immunotherapy of cancer · 2026Article
- Immunotherapy for Glioma: A compartmental framework for resistance and rational combination design.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026Review
- Review
- Kynurenine Pathway, Nrf2 and NF-κB Cross-Regulation in the CNS: An Overview.Molecular neurobiology · 2026Review
- Review
- Nexus of IDO1/Kynurenine Pathway to T-Cell Exhaustion: Hypoxia-Induced Tryptophan Metabolism in Glioblastoma.Metabolites · 2026Review
- Immune checkpoint inhibitors in pediatric central nervous system tumors: biology, clinical experience, and translational pathways to precision immunotherapy.Journal of neuro-oncology · 2026Review
- Targeting Tryptophan Metabolism for Tuberculosis Biomarkers and Host-Directed Therapy.The Journal of infectious diseases · 2026Review
- Modulation of the Kynurenine Pathway: A New Approach for Treating Neurodegeneration.Life (Basel, Switzerland) · 2026Review
- The tumor microenvironment of medulloblastoma: from emerging biological insights to novel therapeutic targeting.Frontiers in oncology · 2026Review
- Recent advances in tumor-activated prodrug nanoparticles for cancer immunotherapy.Frontiers in immunology · 2026Review
- Metabolic reprogramming and immune evasion interaction in the tumor microenvironment promote tumor progression.Frontiers in oncology · 2026Review
- Myeloid-Derived Suppressor Cells and Radiotherapy: Regulation and Clinical Implications.Journal of Cancer · 2026Review
- One-carbon metabolism in cancer: moonlighting functions of metabolic enzymes and anti-tumor therapy.Cancer metastasis reviews · 2025Review
- Role of Tryptophan Metabolism in Cancer.Cancer innovation · 2025Review
- Therapeutic approaches for targeting the pediatric brain tumor microenvironment.Drug delivery and translational research · 2025Review
- Metabolites as agents and targets for cancer immunotherapy.Nature reviews. Drug discovery · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
38 authors at 8 institutions in 2 countries.
Funding
Abstract
backgroundRecurrent brain tumors are the leading cause of cancer death in children. Indoleamine 2,3-dioxygenase (IDO) is a targetable metabolic checkpoint that, in preclinical models, inhibits anti-tumor immunity following chemotherapy.
methodsWe conducted a phase I trial (NCT02502708) of the oral IDO-pathway inhibitor indoximod in children with recurrent brain tumors or newly diagnosed diffuse intrinsic pontine glioma (DIPG). Separate dose-finding arms were performed for indoximod in combination with oral temozolomide (200 mg/m2/day x 5 days in 28-day cycles), or with palliative conformal radiation. Blood samples were collected at baseline and monthly for single-cell RNA-sequencing with paired single-cell T cell receptor sequencing.
resultsEighty-one patients were treated with indoximod-based combination therapy. Median follow-up was 52 months (range 39-77 months). Maximum tolerated dose was not reached, and the pediatric dose of indoximod was determined as 19.2 mg/kg/dose, twice daily. Median overall survival was 13.3 months (n = 68, range 0.2-62.7) for all patients with recurrent disease and 14.4 months (n = 13, range 4.7-29.7) for DIPG. The subset of n = 26 patients who showed evidence of objective response (even a partial or mixed response) had over 3-fold longer median OS (25.2 months, range 5.4-61.9, p = 0.006) compared to n = 37 nonresponders (7.3 months, range 0.2-62.7). Four patients remain free of active disease longer than 36 months. Single-cell sequencing confirmed emergence of new circulating CD8 T cell clonotypes with late effector phenotype.
conclusionsIndoximod was well tolerated and could be safely combined with chemotherapy and radiation. Encouraging preliminary evidence of efficacy supports advancing to Phase II/III trials for pediatric brain tumors.
Indexed as
Identifiers
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.