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Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
Published on: January 7, 2019
Clinical Application of Oncolytic Viruses: A Systematic Review
Mary Cook1, Aman Chauhan2,3
1Department of Internal Medicine, Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland Medical Center, 22 S. Greene Street, Baltimore, MD 21201, USA.
Abstract:
Leveraging the immune system to thwart cancer is not a novel strategy and has been explored via cancer vaccines and use of immunomodulators like interferons. However, it was not until the introduction of immune checkpoint inhibitors that we realized the true potential of immunotherapy in combating cancer. Oncolytic viruses are one such immunotherapeutic tool that is currently being explored in cancer therapeutics. We present the most comprehensive systematic review of all oncolytic viruses in Phase 1, 2, and 3 clinical trials published to date. We performed a systematic review of all published clinical trials indexed in PubMed that utilized oncolytic viruses. Trials were reviewed for type of oncolytic virus used, method of administration, study design, disease type, primary outcome, and relevant adverse effects. A total of 120 trials were found; 86 trials were available for our review. Included were 60 phase I trials, five phase I/II combination trials, 19 phase II trials, and two phase III clinical trials. Oncolytic viruses are feverously being evaluated in oncology with over 30 different types of oncolytic viruses being explored either as a single agent or in combination with other antitumor agents. To date, only one oncolytic virus therapy has received an FDA approval but advances in bioengineering techniques and our understanding of immunomodulation to heighten oncolytic virus replication and improve tumor kill raises optimism for its future drug development.
Insights
Oncolytic viruses are promising cancer immunotherapies. This systematic review of clinical trials shows over 30 types are being investigated, highlighting their potential in oncology drug development.
Area of Science:
- Oncology
- Immunotherapy
- Virology
Background:
- Cancer immunotherapy has evolved significantly, with immune checkpoint inhibitors revolutionizing treatment.
- Oncolytic viruses represent a novel class of immunotherapeutic agents for cancer treatment.
Purpose of the Study:
- To conduct a comprehensive systematic review of all published clinical trials involving oncolytic viruses.
- To analyze the landscape of oncolytic virus research in clinical development.
Main Methods:
- Systematic literature search of PubMed for clinical trials utilizing oncolytic viruses.
- Review of 86 trials (60 Phase I, 19 Phase II, 2 Phase III) for virus type, administration, design, disease, outcomes, and adverse effects.
Main Results:
- Over 30 different oncolytic viruses are under investigation as single agents or in combination therapies.
- The review identified 86 eligible clinical trials, predominantly in early phases (Phase I and II).
- Currently, only one oncolytic virus therapy has received FDA approval.
Conclusions:
- Oncolytic viruses are a rapidly advancing area in oncology, with extensive ongoing clinical evaluation.
- Advances in bioengineering and understanding of immunomodulation offer optimism for future oncolytic virus drug development.
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