{"title":"Histological confirmation and radiotherapy facilitate continuation of epcoritamab in a patient with tumor flare reaction.","authors":"Mai Fujita, Sho Okamoto, Kazuki Jinnouchi, Keita Kai, Tatsuya Mihashi, Keisuke Kidoguchi, Kana Kusaba, Haruhiko Sano, Hidekazu Itamura, Mariko Yoshimura, Hiroo Katsuya, Toshihiko Ando, Shinya Kimura","doi":"10.1007/s12185-025-03979-1","DOIUrl":null,"url":null,"abstract":"<p><p>Epcoritamab, a CD3 × CD20 bispecific antibody, has been approved as salvage therapy for patients with relapsed/refractory large B-cell lymphoma. However, immunotherapeutic agents have been linked to tumor flare reaction (TFR), which is characterized by rapid tumor proliferation associated with the immune response. This report describes the case of a 71-year-old man with relapsed/refractory diffuse large B-cell lymphoma who developed TFR in the cervical lymph nodes during treatment with epcoritamab. Prompt biopsy upon detection of tumor enlargement led to an accurate diagnosis of TFR and informed therapeutic strategies. Subsequent radiotherapy (RT) effectively controlled local lesions while preserving the systemic immune response, suggesting that RT may be an option to prevent the recurrence and progression of TFR and help to avoid discontinuation of effective therapy.</p>","PeriodicalId":13992,"journal":{"name":"International Journal of Hematology","volume":" ","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Hematology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s12185-025-03979-1","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"HEMATOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Epcoritamab, a CD3 × CD20 bispecific antibody, has been approved as salvage therapy for patients with relapsed/refractory large B-cell lymphoma. However, immunotherapeutic agents have been linked to tumor flare reaction (TFR), which is characterized by rapid tumor proliferation associated with the immune response. This report describes the case of a 71-year-old man with relapsed/refractory diffuse large B-cell lymphoma who developed TFR in the cervical lymph nodes during treatment with epcoritamab. Prompt biopsy upon detection of tumor enlargement led to an accurate diagnosis of TFR and informed therapeutic strategies. Subsequent radiotherapy (RT) effectively controlled local lesions while preserving the systemic immune response, suggesting that RT may be an option to prevent the recurrence and progression of TFR and help to avoid discontinuation of effective therapy.
期刊介绍：
The International Journal of Hematology, the official journal of the Japanese Society of Hematology, has a long history of publishing leading research in hematology. The journal comprises articles that contribute to progress in research not only in basic hematology but also in clinical hematology, aiming to cover all aspects of this field, namely, erythrocytes, leukocytes and hematopoiesis, hemostasis, thrombosis and vascular biology, hematological malignancies, transplantation, and cell therapy. The expanded [Progress in Hematology] section integrates such relevant fields as the cell biology of stem cells and cancer cells, and clinical research in inflammation, cancer, and thrombosis. Reports on results of clinical trials are also included, thus contributing to the aim of fostering communication among researchers in the growing field of modern hematology. The journal provides the best of up-to-date information on modern hematology, presenting readers with high-impact, original work focusing on pivotal issues.
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