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Neoadjuvant immune checkpoint inhibition in the management of glioblastoma: Exploring a new frontier
Abstract
Brain tumors are one of the leading causes of cancer related death in both the adult and pediatric patient population. Gliomas represent a cohort of brain tumors derived from glial cell lineages which include astrocytomas, oligodendrogliomas and glioblastomas (GBMs). These tumors are known to grow aggressively and have a high lethality with GBM being the most aggressive tumor in this group. Currently, few treatment options exist for GBM outside of surgical resection, radiation therapy and chemotherapy. While these measures have been shown to marginally improve patient survival, patients, especially those diagnosed with GBM, often experience a recurrence of their disease. Following disease recurrence, treatment options become more limited as additional surgical resections can pose life threatening risk to the patient, patients may be ineligible for additional radiation, and the recurrent tumor may be resistant to chemotherapy. Immune checkpoint inhibitors (ICIs) have revolutionized the field of cancer immunotherapy as many patients with cancers residing outside the central nervous system (CNS) have experienced a survival benefit from this treatment modality. It has often been observed that this survival benefit is increased following neoadjuvant administration of immune checkpoint inhibitors as tumor antigen is still present in the patient which enables a more robust anti-tumor immune response. Interestingly, results for ICI-based studies for patients with GBM have been largely disappointing which is a stark contrast from the success this treatment modality has had in non-central nervous system cancers. In this review, we will discuss the various benefits of neoadjuvant immune checkpoint inhibition such as how this approach reduces tumor burden and allows for a greater induction of an anti-tumor immune response. Additionally, we will discuss several non-CNS cancers where neoadjuvant immune checkpoint inhibition has been successful and discuss why we believe this approach may provide a survival benefit for GBM patients. We hope this manuscript will foster future studies aimed at exploring whether this approach may be beneficial for patients diagnosed with GBM.
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“Glioblastoma (GB) is a lethal cancer with complex treatment due to brain and tumor factors like the Blood-brain barrier (BBB), tumor variety, and identified subpopulations with potential changes and different treatment responses [195–197].”
From Emerging role of exosomes in cancer therapy: progress and challenges (2025) · cites this paper as [195]
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Pembrolizumab for Early Triple-Negative Breast Cancer
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“Findings from this study demonstrated that among participants diagnosed with early, untreatable stage 2/3 TNBC, the pCR was significantly higher among participants in the cohort who received neoadjuvant pembrolizumab plus neoadjuvant chemotherapy compared to those who received neoadjuvant chemotherapy plus neoadjuvant…”
ResultPembrolizumab in Microsatellite-Instability-High Advanced Colorectal Cancer
André, T., Shiu, K.-K., Kim, T. W., Jensen, B. V., Jensen, L. H., Punt, C., Smith, D., Garcia-Carbonero, R., Benavides, M., Gibbs, P., et al. (2020) · New England Journal of Medicine · doi:10.1056/nejmoa2017699 · Cited by 3,099
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Forde, P. M., Spicer, J., Lu, S., Provencio, M., Mitsudomi, T., Awad, M. M., Felip, E., Broderick, S. R., Brahmer, J. R., Swanson, S. J., et al. (2022) · New England Journal of Medicine · doi:10.1056/nejmoa2202170 · Cited by 2,825
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“At the time of resection, these tumors also noted a significant increase in tertiary lymphoid structures (TLS), which have been found to harbor most PD-1+ tumor infiltrating lymphocytes (TILs) in lung cancer (69).”
BackgroundIpilimumab in patients with melanoma and brain metastases: an open-label, phase 2 trial
Margolin, K., Ernstoff, M. S., Hamid, O., Lawrence, D., McDermott, D., Puzanov, I., Wolchok, J. D., Clark, J. I., Sznol, M., Logan, T. F., et al. (2012) · The Lancet Oncology · doi:10.1016/s1470-2045(12)70090-6 · Cited by 1,091
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“Findings from this study demonstrated that in patients with previously untreated, diagnosed early-stage TNBC, neoadjuvant treatment with atezolizumab in combination with chemotherapy significantly improved pCR rates compared to patients who received placebo in combination with chemotherapy (62).”
ResultNeoadjuvant checkpoint blockade for cancer immunotherapy
Topalian, S. L., Taube, J. M., & Pardoll, D. M. (2020) · Science · doi:10.1126/science.aax0182 · Cited by 1,001
Provencio, M., Nadal, E., Insa, A., García-Campelo, M. R., Casal-Rubio, J., Dómine, M., Majem, M., Rodríguez-Abreu, D., Martínez-Martí, A., De Castro Carpeño, J., et al. (2020) · The Lancet Oncology · doi:10.1016/s1470-2045(20)30453-8 · Cited by 841
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Nanda, R., Liu, M. C., Yau, C., Shatsky, R., Pusztai, L., Wallace, A., Chien, A. J., Forero-Torres, A., Ellis, E., Han, H., et al. (2020) · JAMA Oncology · doi:10.1001/jamaoncol.2019.6650 · Cited by 710
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Cited by
Sorted by citations
Emerging role of exosomes in cancer therapy: progress and challenges
Li, J., Wang, J., & Chen, Z. (2025) · Molecular Cancer · doi:10.1186/s12943-024-02215-4 · Cited by 297
Metadata
- Authors
- Frederico, S. C., Darling, C., Bielanin, J. P., Dubinsky, A. C., Zhang, X., Hadjipanayis, C. G., & Kohanbash, G.
- Venue
- Frontiers in Immunology
- Publisher
- Frontiers Media SA
- Published
- 2023-02-17
- Volume
- 14
- ISSN
- 1664-3224
- PMC
- PMC9981631
- Cited by
- 15
- References
- 12
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