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Combination therapy with immune checkpoint inhibitors (ICIs); a new frontier
Somayeh Vafaei1, Angelina O Zekiy2, Ramadhan Ado Khanamir3
1Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.
Immune checkpoint inhibitors (ICIs) show promise but face resistance and toxicity. Combining ICIs with other therapies may overcome resistance and improve anti-tumor effects in cancer treatment.
Area of Science:
- Oncology
- Immunotherapy
Background:
- Immune checkpoint inhibitors (ICIs) offer durable anti-tumor effects but face challenges with resistance and toxicity.
- Approximately 60-70% of patients with melanoma and lung cancer do not respond to ICIs.
- Tumor microenvironment alterations contribute to ICI resistance by promoting angiogenesis and inhibiting anti-tumor immunity.
Purpose of the Study:
- To review the therapeutic benefits of ICIs in cancer immunotherapy.
- To explore the impact of combining ICIs with other treatment modalities to overcome resistance.
Main Methods:
- Literature review of studies on ICIs and combination therapies.
- Analysis of mechanisms underlying ICI resistance, focusing on the tumor microenvironment.
Main Results:
- ICIs represent a significant advancement in cancer immunotherapy.
- Combination strategies involving ICIs with chemoradiotherapy, targeted therapies, or cancer vaccines show potential to enhance efficacy.
- Addressing tumor microenvironment-mediated resistance is crucial for improving ICI response rates.
Conclusions:
- Combination therapy holds promise for overcoming ICI resistance and improving patient outcomes.
- Further research into optimizing combination strategies is warranted to maximize the clinical utility of ICIs.
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