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Cancer regression in patients after transfer of genetically engineered lymphocytes

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TLDR
The ability to specifically confer tumor recognition by autologous lymphocytes from peripheral blood by using a retrovirus that encodes a T cell receptor is reported.
Abstract
Through the adoptive transfer of lymphocytes after host immunodepletion, it is possible to mediate objective cancer regression in human patients with metastatic melanoma. However, the generation of tumor-specific T cells in this mode of immunotherapy is often limiting. Here we report the ability to specifically confer tumor recognition by autologous lymphocytes from peripheral blood by using a retrovirus that encodes a T cell receptor. Adoptive transfer of these transduced cells in 15 patients resulted in durable engraftment at levels exceeding 10% of peripheral blood lymphocytes for at least 2 months after the infusion. We observed high sustained levels of circulating, engineered cells at 1 year after infusion in two patients who both demonstrated objective regression of metastatic melanoma lesions. This study suggests the therapeutic potential of genetically engineered cells for the biologic therapy of cancer.

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Primary, Adaptive, and Acquired Resistance to Cancer Immunotherapy.

TL;DR: As the molecular mechanisms of resistance to immunotherapy are elucidated, actionable strategies to prevent or treat them may be derived to improve clinical outcomes for patients.
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Case report of a serious adverse event following the administration of T cells transduced with a chimeric antigen receptor recognizing ERBB2

TL;DR: It is speculated that the large number of administered cells localized to the lung immediately following infusion and were triggered to release cytokine by the recognition of low levels of ERBB2 on lung epithelial cells, consistent with a cytokine storm.
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Taking dendritic cells into medicine

TL;DR: Some medical implications of DC biology that account for illness and provide opportunities for prevention and therapy are presented.
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Adoptive cell transfer as personalized immunotherapy for human cancer.

TL;DR: The ability to genetically engineer lymphocytes to express conventional T cell receptors or chimeric antigen receptors has further extended the successful application of ACT for cancer treatment.
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Natural Innate and Adaptive Immunity to Cancer

TL;DR: Current experimental and human clinical data supporting a cancer immunoediting process that provide the fundamental basis for further study of immunity to cancer and for the rational design of immunotherapies against cancer are discussed.
References
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Journal ArticleDOI

New Guidelines to Evaluate the Response to Treatment in Solid Tumors

TL;DR: A model by which a combined assessment of all existing lesions, characterized by target lesions and nontarget lesions, is used to extrapolate an overall response to treatment is proposed, which is largely validated by the Response Evaluation Criteria in Solid Tumors Group and integrated into the present guidelines.
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Cancer Regression and Autoimmunity in Patients After Clonal Repopulation with Antitumor Lymphocytes

TL;DR: The adoptive transfer of highly selected tumor-reactive T cells directed against overexpressed self-derived differentiation antigens after a nonmyeloablative conditioning regimen resulted in the persistent clonal repopulation of T cells in cancer patients, leading to regression of the patients' metastatic melanoma as well as to the onset of autoimmune melanocyte destruction.
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A new approach to the adoptive immunotherapy of cancer with tumor-infiltrating lymphocytes

TL;DR: The adoptive transfer of tumor-infiltrating lymphocytes (TIL) expanded in interleukin-2 (IL-2) to mice bearing micrometastases from various types of tumors showed that TIL are 50 to 100 times more effective in their therapeutic potency than are lymphokine-activated killer cells.
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Removal of homeostatic cytokine sinks by lymphodepletion enhances the efficacy of adoptively transferred tumor-specific CD8+ T cells

TL;DR: It is found that even in the genetic absence of T reg cells, a nonmyeloablative regimen substantially augmented CD8+ T cell reactivity to self-tissue and tumor, and the restricted availability of homeostatic cytokines can be a contributing factor to peripheral tolerance, as well as a limiting resource for the effectiveness of tumor-specific T cells.
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