{"id":1583,"date":"2025-06-05T11:18:01","date_gmt":"2025-06-05T09:18:01","guid":{"rendered":"https:\/\/mvz-tuebingen.de\/?p=1583"},"modified":"2025-08-14T12:14:00","modified_gmt":"2025-08-14T10:14:00","slug":"in-depth-characterization-of-vaccine-induced-neoantigen-specific-t-cells-in-patients-with-idh1-mutant-glioma-undergoing-personalized-peptide-vaccination","status":"publish","type":"post","link":"https:\/\/mvz-tuebingen.de\/en\/in-depth-characterization-of-vaccine-induced-neoantigen-specific-t-cells-in-patients-with-idh1-mutant-glioma-undergoing-personalized-peptide-vaccination\/","title":{"rendered":"In-depth characterization of vaccine-induced neoantigen-specific T cells in patients with IDH1-mutant glioma undergoing personalized peptide vaccination"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1323px;margin-left: calc(-5% \/ 2 );margin-right: calc(-5% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.375%;--awb-margin-bottom-large:30px;--awb-spacing-left-large:2.375%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:2.375%;--awb-spacing-left-medium:2.375%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:2.375%;--awb-spacing-left-small:2.375%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\" style=\"--awb-content-alignment:justify;\"><p>Henning Zelba<sup>1<\/sup>, Borong Shao<sup>1<\/sup>, Armin Rabsteyn<sup>1<\/sup>, Annekathrin Reinhardt<sup>1<\/sup>, Carsten Greve<sup>1<\/sup>, Lisa Oenning<sup>1<\/sup>, Simone Kayser<sup>1<\/sup>, Christina Kyzirakos<sup>1<\/sup>, Pauline Latzer<sup>1<\/sup>, Tabea Riedlinger<sup>1<\/sup>, Oliver Bartsch<sup>1<\/sup>, Julian W\u00fcnsche<sup>2<\/sup>, Johannes Harter<sup>3<\/sup>, Magdalena Feldhahn<sup>3<\/sup>, Yannick Bantel<sup>3<\/sup>, Janina Joh\u00e4nning<sup>3<\/sup>, Jiri K\u00f6dding<sup>3<\/sup>, Dirk Hadaschik<sup>4<\/sup>, Martin Schulze<sup>1<\/sup>, Florian Battke<sup>3<\/sup>, Olga Maksimovic<sup>2<\/sup>, Veit Scheble<sup>2<\/sup>, Alexandra M Miller<sup>5<\/sup>, Michael Castro<sup>6 7<\/sup>, Deborah T Blumenthal<sup>8<\/sup>, Martin Glas<sup>9<\/sup>, David Reardon<sup>10<\/sup> and Saskia Biskup<sup>1 2 3 4<\/sup><\/p>\n<\/div><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;text-transform:uppercase;--fontSize:20;--minFontSize:20;line-height:var(--awb-typography1-line-height);\">Abstract<\/h3><\/div><div class=\"fusion-text fusion-text-2\" style=\"--awb-content-alignment:justify;\"><p>Isocitrate dehydrogenase (IDH) mutant glioma is a malignant primary brain tumor diagnosed in adults. In recent years, there has been significant progress in understanding the molecular pathogenesis and biology of these tumors. The first targeted IDH-inhibitor was approved by the US Food and Drug Administration in August 2024 for grade 2 gliomas, in light of results of a phase III trial which showed significant advantages in progression-free survival. However, biologic therapy is not curative, and subsequent treatment options offer only limited clinical benefit and often result in long-term toxicities. In addition, targeted treatment options for grade 3 and grade 4 IDH-mutant gliomas are still missing. In this study, we present n=52 patients with glioma (grade 2, 3 and 4) with confirmed IDH1 mutation (mutIDH1) in the newly diagnosed and recurrent setting who, in addition to standard-of- care, received a personalized neoantigen-targeting peptide vaccine. Each tumor was initially analyzed for somatic mutations by whole exome sequencing, and a peptide vaccine containing potential neoepitopes was designed, manufactured and vaccinated. Each vaccine consisted of peptides derived from numerous somatic mutations, including at least one peptide targeting the mutIDH1. Vaccine immunogenicity was determined by intracellular cytokine staining and simultaneous measurement of four T-cell activation markers (Interferon-\u03b3, Tumor Necrosis Factor, Interleukin-2, CD154) after 12-day in vitro expansion of pre and post vaccination peripheral blood mononuclear cells. Extracellular CD154 staining was used to sort mutIDH1-specific CD4+T cells. Immunomonitoring revealed that the vaccines were immunogenic and induced mainly CD4 but also CD8 T cell responses. Vaccine-induced immune responses were robust and polyfunctional. Immunogenicity against mutIDH1 was high (89%). We implemented an assay which allowed us to isolate functional antigen-specific CD4+T cells in an HLA-independent manner. Subsequent T cell receptor (TCR) repertoire sequencing revealed that CD4+T cells reacting on mutIDH1 stimulation were polyclonal. Strikingly, we detected two mutIDH1-specific TCR\u03b2 candidate sequences in three different patients. These three patients had the same human leukocyte antigen (HLA) DQA-DQB alleles. The obtained TCR\u03b2 sequences could be tracked in autologous ex-vivo single-cell transcriptomic data. Our results provide a rationale for pursuing vaccination and T cell transfer strategies targeting IDH1. Furthermore, our findings indicate that personalized neoantigen-targeting vaccines might be considered for the treatment of IDH1-mutant gliomas.<\/p>\n<p><strong>Keywords:<\/strong> T cell; T cell Receptor &#8211; TCR; Vaccine.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:4.75%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:4.75%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:2.375%;--awb-spacing-left-medium:2.375%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:2.375%;--awb-spacing-left-small:2.375%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;text-transform:uppercase;--fontSize:20;--minFontSize:20;line-height:var(--awb-typography1-line-height);\">Authors<\/h3><\/div><div class=\"fusion-text fusion-text-3\" style=\"--awb-content-alignment:justify;\"><ol>\n<li>Zentrum f\u00fcr Humangenetik T\u00fcbingen, T\u00fcbingen, Germany<\/li>\n<li>MVZ f\u00fcr Diagnostik, Pr\u00e4vention, Onkologie und Gastroenterologie T\u00fcbingen GmbH, T\u00fcbingen, Germany<\/li>\n<li>CeGaT GmbH, Tubingen, Germany<\/li>\n<li>cecava GmbH, T\u00fcbingen, Germany<\/li>\n<li>NYU Langone Health Perlmutter Cancer Center, New York, New York, USA<\/li>\n<li>Cellworks Group Inc, South San Francisco, California, USA<\/li>\n<li>Personalized Cancer Medicine, PLLC, Santa Monica, California, USA<\/li>\n<li>Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel<\/li>\n<li>Division of Clinical Neurooncology, University Hospital Essen Department of Neurology, Essen, Germany<\/li>\n<li>Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA<\/li>\n<\/ol>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-padding-left:30px;--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:4.75%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:4.75%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:2.375%;--awb-spacing-left-medium:2.375%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:2.375%;--awb-spacing-left-small:2.375%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-3 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;text-transform:uppercase;--fontSize:20;--minFontSize:20;line-height:var(--awb-typography1-line-height);\">References<\/h3><\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"--awb-flex-grow:0;--awb-flex-grow-medium:0;--awb-flex-grow-small:0;--awb-flex-shrink:0;--awb-flex-shrink-medium:0;--awb-flex-shrink-small:0;width:105% !important;max-width:105% !important;margin-left: calc(-5% \/ 2 );margin-right: calc(-5% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-0 fusion_builder_column_inner_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:4.75%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:4.75%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:2.375%;--awb-spacing-left-medium:2.375%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:2.375%;--awb-spacing-left-small:2.375%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-row\"><div class=\"fusion-image-element \" style=\"--awb-max-width:200px;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none\"><a class=\"fusion-no-lightbox\" href=\"\/web\/wp-content\/uploads\/2025\/08\/Publication_Personalized_Peptide_Vaccination.pdf\" target=\"_blank\" aria-label=\"MVZ_Icon_Formular\" rel=\"noopener noreferrer\"><img decoding=\"async\" width=\"301\" height=\"301\" src=\"https:\/\/mvz-tuebingen.de\/web\/wp-content\/uploads\/2024\/08\/MVZ_Icon_Formular.png\" 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publication<\/a><\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-1 fusion_builder_column_inner_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:4.75%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:4.75%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:2.375%;--awb-spacing-left-medium:2.375%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:2.375%;--awb-spacing-left-small:2.375%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-row\"><div class=\"fusion-image-element \" 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NCBI<\/a><\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":3,"featured_media":1112,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-1583","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publication"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>In-depth characterization of vaccine-induced neoantigen-specific T cells in patients with IDH1-mutant glioma undergoing personalized peptide vaccination - MVZ T\u00fcbingen<\/title>\n<meta name=\"description\" content=\"Find out more about this publication on the topic of in-depth characterization of vaccine-induced neoantigen-specific T cells.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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