Trial reportFrontiers in immunology2025
Intratumoral delivery of PD-1/PD-L1 and CTLA-4 inhibitors for recurrent/refractory solid tumors: a proof-of-concept treatment strategy.
Trial report in Frontiers in immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03755739 (A Phase II/III Trial of Comparison of Benefit of Administration of Checkpoint Inhibitors Plus Chemodrug Via Artery or Fine Needle to Tumor Versus Vein for Immunotherapy of Advanced Solid Tumors), which is not on this map. Cited by 1 paper.
What it found
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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 II/III Trial of Comparison of Benefit of Administration of Checkpoint Inhibitors Plus Chemodrug Via Artery or Fine Needle to Tumor Versus Vein for Immunotherapy of Advanced Solid Tumors
Who cites it
1 citing paper in PubMed.
- Preliminary exploration of the role of CD8Biomedical reports · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
23 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Immune checkpoint inhibitors (ICIs) are a leading immunotherapy. However, their application has not universally translated into significant benefits. A substantial number of patients either show resistance or relapse post-initial response, which emphasizes the need for more sophisticated therapeutic approaches. The drug combination is one promising route. The cancer-immunity cycle reveals the anti-tumor immune-related rate limiting steps of tumors. Theoretically, focusing on different phases of the cancer-immunity cycle can enhance therapeutic results. However, combination therapy includes a higher risk of adverse effects, which demand careful consideration. Methods: In this study, we combined programmed death-1 (PD-1)/ programmed death ligand-1 (PD-L1) and cytotoxic T Lymphocyte antigen 4 (CTLA-4) inhibitors with a reduced dosage but via an intra-tumor drug delivery strategy to treat recurrent/refractory (R/R) advanced solid tumors. Results: Herein, we report four patients with favorable outcomes (complete response for more than 2 years). In our cases, most TRAEs are of grade 1-2. Conclusion: Intratumoral co-delivery of PD-1/PD-L1 and CTLA-4 inhibitors with reduced dosage shows promising efficacy and safety in R/R advanced solid tumors. In addition to reducing drug-related adverse events, this technology has advantages in activating tumor immunity. Clinical Trial Registration: https://clinicaltrials.gov/, identifier: NCT03755739.
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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 Socratic graph.