PMID- 31589347 OWN - NLM STAT- MEDLINE DCOM- 20191209 LR - 20200108 IS - 1365-3083 (Electronic) IS - 0300-9475 (Linking) VI - 90 IP - 6 DP - 2019 Dec TI - Exploiting autoimmunity unleashed by low-dose immune checkpoint blockade to treat advanced cancer. PG - e12821 LID - 10.1111/sji.12821 [doi] AB - As a result of the cancer immunotherapy revolution, more than 2000 immuno-oncology agents are currently being tested or are in use to improve responses. Not unexpectedly, the 2018 Nobel Prize in Physiology or Medicine was awarded to James P. Allison and Tasuku Honjo for their development of cancer therapy by the blockade of co-inhibitory signals. Unfortunately, manipulation of the co-inhibitory receptors has also resulted in a safety issue: widespread iatrogenic immune-related adverse events (irAEs). Autoimmunity is emerging as the nemesis of immunotherapy. Originally, it was assumed that CTLA-4 blockade selectively targets T cells relevant to the antitumour immune response. However, an uncontrolled pan T cell activation was induced compromising tolerance to healthy self-tissues. The irAEs are very similar to that of a chronic graft-versus-host-disease (GVHD) reaction following allogeneic bone marrow transplantation (BMT). We hypothesized that ipilimumab induced a graft-versus-malignancy (GVM) effect, which eradicated metastatic melanoma in a minority of patients, but also involved an auto-GVHD reaction that resulted in widespread autoimmunity in the majority. Therefore, we argued for a profound theoretical point against the consensus of experts. The task is not to desperately put the genie back in the bottle by immune-suppressive treatments, but instead to harness the autoimmune forces. In this way, the same goal could be achieved by an antibody as by the adoptive transfer of alloreactive donor lymphocytes, but without severe GVHD. The proof-of-principle of a low-dose-combination immune checkpoint therapy, consisting only of approved drugs and treatments, was demonstrated in 111 stage IV cancer patients. CI - (c) 2019 The Scandinavian Foundation for Immunology. FAU - Bakacs, Tibor AU - Bakacs T AUID- ORCID: 0000-0002-9145-9276 AD - PRET Therapeutics Ltd., Budapest, Hungary. FAU - Moss, Ralph W AU - Moss RW AD - Moss Reports, Blue Hill, Maine. FAU - Kleef, Ralf AU - Kleef R AD - Immunology & Integrative Oncology, Kleef Hyperthermie, Vienna, Austria. FAU - Szasz, Marcell A AU - Szasz MA AD - Cancer Centre, Semmelweis University, Budapest, Hungary. FAU - Anderson, Colin C AU - Anderson CC AD - Departments of Surgery and Medical Microbiology & Immunology, Alberta Diabetes Institute, Alberta Transplant Institute, University of Alberta, Edmonton, Alberta, Canada. LA - eng PT - Journal Article PT - Review DEP - 20191007 PL - England TA - Scand J Immunol JT - Scandinavian journal of immunology JID - 0323767 RN - 0 (Antineoplastic Agents, Immunological) RN - 0 (Biomarkers, Tumor) RN - 0 (CTLA-4 Antigen) RN - 0 (CTLA4 protein, human) SB - IM MH - Antineoplastic Agents, Immunological/administration & dosage/adverse effects/*therapeutic use MH - Autoimmunity/*drug effects MH - Biomarkers, Tumor/*antagonists & inhibitors MH - CTLA-4 Antigen/antagonists & inhibitors/genetics/metabolism MH - Humans MH - Lymphocyte Activation/drug effects/immunology MH - *Molecular Targeted Therapy MH - Neoplasm Metastasis MH - Neoplasm Staging MH - Neoplasms/*drug therapy/genetics/*immunology/pathology MH - Off-Label Use MH - Proof of Concept Study MH - Signal Transduction/drug effects MH - T-Lymphocytes/drug effects/immunology/metabolism MH - Treatment Outcome OTO - NOTNLM OT - hyperthermia OT - immune checkpoint inhibitors OT - immune-related adverse events OT - interleukin-2 OT - ipilimumab OT - low-dose-combination therapy OT - nivolumab OT - tolerance EDAT- 2019/10/08 06:00 MHDA- 2019/12/18 06:00 CRDT- 2019/10/08 06:00 PHST- 2019/07/03 00:00 [received] PHST- 2019/07/31 00:00 [revised] PHST- 2019/08/26 00:00 [accepted] PHST- 2019/10/08 06:00 [pubmed] PHST- 2019/12/18 06:00 [medline] PHST- 2019/10/08 06:00 [entrez] AID - 10.1111/sji.12821 [doi] PST - ppublish SO - Scand J Immunol. 2019 Dec;90(6):e12821. doi: 10.1111/sji.12821. Epub 2019 Oct 7.