{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T21:23:49Z","timestamp":1790717029908,"version":"4.1.0"},"reference-count":93,"publisher":"American Society of Clinical Oncology (ASCO)","issue":"42","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American Society of Clinical Oncology Educational Book"],"published-print":{"date-parts":[[2022,7]]},"abstract":"<jats:p> The role of immune checkpoint inhibitors (ICIs) in the treatment of pediatric cancers continues to evolve. Such therapies function by augmenting existing antitumor T-cell responses that have been rendered ineffective by inhibitory pathways. Although ICIs have proven highly effective for adult cancers, initial phase I\/II clinical trials using single-agent ICIs against unselected pediatric cancers have been overall disappointing. With the exception of pediatric classic Hodgkin lymphoma, responses to ICIs have been infrequent, likely stemming from an inherent difference in the immunogenicity of childhood cancers, which, on average, have far fewer neoantigens than adult cancers. Recently, however, hope has reemerged that certain subsets of children with cancer may benefit from ICI therapies. In preliminary studies, patients with both pediatric hypermutated and SMARCB1-deficient cancers have had impressive responses to ICI therapies, likely as a result of underlying biologies that enhance neoantigen expression and tumoral inflammation. Dedicated trials are ongoing to fully evaluate the efficacy of ICIs for patients with these subsets of pediatric cancer. <\/jats:p>","DOI":"10.1200\/edbk_349799","type":"journal-article","created":{"date-parts":[[2022,5,17]],"date-time":"2022-05-17T19:59:30Z","timestamp":1652817570000},"page":"781-794","source":"Crossref","is-referenced-by-count":35,"title":["Checkpoint Immunotherapy in Pediatrics: Here, Gone, and Back Again"],"prefix":"10.1200","author":[{"given":"Adrienne H.","family":"Long","sequence":"first","affiliation":[{"name":"Division of Hematology, Oncology, and Stem Cell Transplant, Department of Pediatrics, Stanford University, Stanford, CA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel A.","family":"Morgenstern","sequence":"additional","affiliation":[{"name":"Division of Haematology\/Oncology, Department of Paediatrics, Hospital for Sick Children and University of Toronto, Toronto, Ontario, 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