{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T13:31:22Z","timestamp":1787232682205,"version":"build-2736575974"},"reference-count":62,"publisher":"BMJ","issue":"8","license":[{"start":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T00:00:00Z","timestamp":1787184000000},"content-version":"unspecified","delay-in-days":19,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"name":"Research Facility Data Analytics from the Leiden University Medical Center","award":["N\/A"],"award-info":[{"award-number":["N\/A"]}]},{"DOI":"10.13039\/501100004622","name":"Dutch Cancer Society","doi-asserted-by":"crossref","award":["10713"],"award-info":[{"award-number":["10713"]}],"id":[{"id":"10.13039\/501100004622","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["J Immunother Cancer"],"accepted":{"date-parts":[[2026,8,2]]},"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Allogeneic hematopoietic stem cell transplantation (alloHSCT) can be a curative treatment for hematological diseases. After HLA-matched alloHSCT, donor T cells may recognize minor histocompatibility antigens (MiHAs), which are polymorphic HLA-binding peptides on patient cells that are absent from donor cells due to genetic differences. Donor T cells can induce beneficial anti-tumor effects if MiHAs are targeted on malignant hematopoietic cells in the patient, while graft-versus-host disease (GvHD) may develop if MiHAs are targeted on patients\u2019 healthy non-hematopoietic tissues.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We previously isolated T-cell clones from patients responding to donor lymphocyte infusions (DLIs) after HLA-matched alloHSCT, and identified HLA class I-restricted MiHAs. To investigate MiHA-specific T-cell responses in patients, we here sequenced the T-cell receptors (TCRs) of MiHA-specific T-cell clones and identified 394 distinct TCRs against 122 MiHAs. We used the collection of identified TCRs to measure frequencies of matched MiHA-specific TCRs in 39 patients responding to DLI with antitumor responses accompanied with no (n=9), limited (n=8) or severe (n=22) GvHD.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The data showed higher MiHA-specific TCR frequencies in patients with severe GvHD, which were mainly driven by clonal expansion. Moreover, within the diverse MiHA-specific TCR repertoires in these patients, we identified five public TCRs against four MiHAs with identical CDR3 regions and several TCRs targeting MiHAs with similar, but not identical, CDR3 regions.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Patients with severe GvHD have high MiHA-TCR frequencies mainly driven by clonal expansion, and that MiHA-specific TCR repertoires in patients responding to DLI after alloHSCT are highly diverse with a few public clonotypes.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/jitc-2026-015350","type":"journal-article","created":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T13:15:14Z","timestamp":1787231714000},"page":"e015350","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["T-cell receptor repertoires against HLA 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