PD-1 and PD-L1 in Cancer Immunotherapy

A special issue of Current Oncology (ISSN 1718-7729).

Deadline for manuscript submissions: 30 June 2026 | Viewed by 1257

Special Issue Editor


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Guest Editor
Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
Interests: cancer immunotherapy; immunologic resistance; drug-combination therapies

Special Issue Information

Dear Colleagues,

The PD-1/PD-L1 axis has emerged as a critical pathway in cancer immunotherapy, revolutionizing the treatment landscape for numerous malignancies. Immune checkpoint inhibitors targeting PD-1 and PD-L1 have demonstrated remarkable clinical efficacy across a wide range of tumor types. However, significant challenges remain, including understanding the mechanisms of resistance, identifying predictive biomarkers, and optimizing combination therapies to enhance therapeutic outcomes.

This Special Issue aims to highlight cutting-edge research and advancements in the field of PD-1/PD-L1 immunotherapy. We welcome original research articles and reviews that explore the molecular mechanisms of PD-1/PD-L1 signaling, the development of novel therapeutic strategies, and the integration of single-cell and spatial omics technologies to unravel the complexities of tumor–immune interactions. Contributions addressing the clinical challenges of resistance, toxicity management, and patient stratification are also encouraged.

We look forward to receiving your contributions.

Dr. Aleksandar Obradovic
Guest Editor

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Keywords

  • PD-1
  • PD-L1
  • cancer immunotherapy
  • immune checkpoint inhibitors
  • resistance mechanisms
  • combination therapies

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Published Papers (1 paper)

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Research

12 pages, 781 KB  
Article
Re-Exposure of a PD-1 Inhibitor After Previous Immune-Related Adverse Events
by Jana Burghaus-Zhang, Carsten Schulz, Egle Ramelyte, Joanna Mangana, Deniz Özistanbullu, Johannes Kleemann, Alexander Enk and Jessica C. Hassel
Curr. Oncol. 2026, 33(4), 180; https://doi.org/10.3390/curroncol33040180 - 24 Mar 2026
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Abstract
Background: Programmed cell death protein (ligand) 1 (PD-(L)1) inhibitors are well established in the treatment of dermatological tumors. Mostly, they are well tolerated, but in about 9–21% of patients, grade 3/4 immune-related adverse events (irAEs) occur. As treatment options are limited, it is [...] Read more.
Background: Programmed cell death protein (ligand) 1 (PD-(L)1) inhibitors are well established in the treatment of dermatological tumors. Mostly, they are well tolerated, but in about 9–21% of patients, grade 3/4 immune-related adverse events (irAEs) occur. As treatment options are limited, it is of interest to determine whether readministration of another or the same PD-(L)1 inhibitor is safe. Methods: This is a multicenter, retrospective study on patients with metastasized dermatological tumors who were retreated with either the same or a different PD-(L)1 inhibitor after the development of irAEs. The study was conducted at centers in Heidelberg, Zurich, and Frankfurt. Results: 22 patients were included between April 2020 and December 2022 with a median age of 71 years. A total of 13 (59%) patients were re-exposed with the same antibody and nine (41%) received a different PD-(L)1 inhibitor. Six (46%) of the patients who were re-exposed to the same antibody had an irAE, of which 67% were identical with the first. In patients receiving a different PD-(L)1 inhibitor, four (44%) developed an irAE, of which 75% were identical with the first. Conclusions: Both an intraclass switch of PD-(L)1 inhibitor treatment and re-exposure with the same antibody after an irAE can be considered as options with a fair chance of improving therapy tolerance. Full article
(This article belongs to the Special Issue PD-1 and PD-L1 in Cancer Immunotherapy)
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