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JOURNAL ARTICLE
REVIEW
Chimeric Antigen Receptor T-Cell Therapy: A Beacon of Hope in the Fight Against Cancer.
Curēus 2018 October 24
Despite significant advancements, relapses, and persistent malignancies are still a major challenge faced by the oncologists. Immunotherapy has shown remarkable potential in induction of sustained remission in refractory malignancies. Chimeric antigen receptor T-cell (CAR-T) therapy is a newer treatment methodology approved by the Food and Drug Administration (FDA). The chimeric pairing of an antigen receptor with the T-cell receptor (TCR) intracellular signaling domain allows cluster of designation 8 (CD8) cytotoxic T-cells to target cell surface makers independent of major histocompatibility complex (MHC) activation. Another essential feature which contributes to the broad applicability of CARs and expanding their potential targets is their ability to bind not only to proteins but also to carbohydrate and glycolipid structures. Their antigen-specific and targeted immune responses have shown promising outcomes in clinical trials particularly involving B-cell malignancies and solid tumors. High remission rates and low percentages of relapses have caused a paradigm shift in the treatment of relapsed or refractory cancers. Challenges include side effects such as cytokine release syndrome, on-target off-tumor toxicities, and replication of its success in treating solid tumors. The burden of side effects and hefty cost of treatment are major obstacles which could hinder its progress globally. Nevertheless, ongoing research would only result in a maximized therapeutic potential in addition to more patient- and cost-friendly treatment. In this review, we aim to provide the readers an overview of chimeric antigen receptor T-cell therapy, a relatively new advancement in the world of immuno-oncology and thereby also discussing its advantages, side effects and future challenges.
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