Zhi-Yin Liu, Ze-Ying Yan, Jian-Feng Li, Yong-Mei Zhu, Guang Yang, Hai-Min Sun, Ran An, Jie Tian, Ying Wang, Xiao-Qian Xu, Li Chen, Wei-Ying Bao, Su-Jiang Zhang
{"title":"Differences in response to immunotherapy drugs including blinatumomab and inotuzumab ozogamicin in B-ALL patients.","authors":"Zhi-Yin Liu, Ze-Ying Yan, Jian-Feng Li, Yong-Mei Zhu, Guang Yang, Hai-Min Sun, Ran An, Jie Tian, Ying Wang, Xiao-Qian Xu, Li Chen, Wei-Ying Bao, Su-Jiang Zhang","doi":"10.1007/s12185-025-03983-5","DOIUrl":"10.1007/s12185-025-03983-5","url":null,"abstract":"<p><p>The treatment of B-cell precursor acute lymphoblastic leukemia (B-ALL) has undoubtedly transitioned into the immunotherapy era. We conducted a retrospective study on B-ALL immunotherapy, especially regimens including blinatumomab (Blina) and inotuzumab ozogamicin (InO), at our center. A total of 21 B-ALL patients were involved in this study, including 18 with newly diagnosed (ND) B-ALL and 3 with relapsed B-ALL. RNA sequencing identified a total of five new fusions (ADD1::JAK2, PVT1::IGLL5, PAX5::KANK2, ETV6::BCL2L14, and CDKN2A::TGFBR3) in five different patients. All ND patients can be divided into four groups according to treatment response. Group 1, which included patients with PAX5::KANK2 and CREBBP::ZNF384, responded best to Blina. Group 2, which included one patient with CDKN2A::TGFBR3 fusion and one who was BCR::ABL positive, showed an inferior response to Blina compared with Group 1. Group 3 initially showed no response but subsequently responded very favorably to InO and showed further improvement with Blina. Group 4, which included patients with PVT1::IGLL5 fusion, had the poorest prognosis. In conclusion, Blina and InO showed specific treatment advantages for different patient groups in our cohort that may be attributed to intrinsic genetic characteristics, such as new fusion genes.</p>","PeriodicalId":13992,"journal":{"name":"International Journal of Hematology","volume":" ","pages":"295-300"},"PeriodicalIF":1.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144015347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Distinct impact of letermovir discontinuation on tacrolimus pharmacokinetics based on concomitant azole antifungal agent.","authors":"Sotaro Goto, Daichi Sadato, Takashi Toya, Akihiro Shimizu, Koki Narita, Hiroaki Shimizu, Yuho Najima, Yasuhiko Yamamura, Noriko Doki","doi":"10.1007/s12185-025-04017-w","DOIUrl":"10.1007/s12185-025-04017-w","url":null,"abstract":"<p><p>Letermovir can effectively prevent clinically significant cytomegalovirus infections following allogeneic hematopoietic stem cell transplantation (HCT). Although some antifungal agents influence the pharmacokinetics of tacrolimus after the discontinuation of letermovir, the effect of posaconazole (PSCZ) has not been previously described. This study retrospectively evaluated the association between azole type and tacrolimus pharmacokinetics before and after discontinuation of letermovir prophylaxis. The analysis included 89 patients who underwent HCT at our hospital. In the PSCZ group, the tacrolimus concentration-to-dose (C/D) ratio after letermovir discontinuation was significantly higher than that observed before discontinuation (median 7.91 vs 6.50, P = 0.004). The fold-change in the C/D ratio (post-/pre-discontinuation) was significantly higher in the PSCZ group compared with the fluconazole group (median 1.23 vs 0.83, P = 0.003). These findings suggest that tacrolimus pharmacokinetics after letermovir discontinuation in HCT recipients vary depending on which concomitant azole antifungal agent is used. Furthermore, the tacrolimus C/D ratio could increase following letermovir discontinuation in patients receiving PSCZ. Careful monitoring of tacrolimus concentrations at letermovir discontinuation is crucial to avoid an unexpected reversal of tacrolimus concentrations and prevent adverse events.</p>","PeriodicalId":13992,"journal":{"name":"International Journal of Hematology","volume":" ","pages":"199-205"},"PeriodicalIF":1.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144302026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Treatment of post-transplant lymphoproliferative disorders in kidney transplant recipients: a single-center retrospective analysis.","authors":"Futoshi Yoshino, Daisuke Kaji, Otoya Watanabe, Kyosuke Yamaguchi, Kosei Kageyama, Yuki Taya, Aya Nishida, Kazuya Ishiwata, Shinsuke Takagi, Hisashi Yamamoto, Yuki Asano-Mori, Naoyuki Uchida, Atsushi Wake, Go Yamamoto","doi":"10.1007/s12185-025-04039-4","DOIUrl":"https://doi.org/10.1007/s12185-025-04039-4","url":null,"abstract":"<p><p>Post-transplant lymphoproliferative disorder (PTLD) is a significant complication of immunosuppression after kidney transplantation and has no established standard therapy. Achieving favorable treatment outcomes and preserving renal function in patients with PTLD remains challenging, particularly when the central nervous system (CNS) is involved. Here we describe our experience with 8 patients who developed PTLD after kidney transplantation at our institution. Diffuse large B-cell lymphoma was the most common histological subtype, observed in 5 patients (62.5%). Epstein-Barr Virus infections were observed in 7 patients (87.5%), CNS involvement in 5 patients (62.5%) and gastrointestinal tract involvement in 3 patients (37.5%). With a median follow-up of 55.3 months, the 4-year overall survival rate was 72.9%. Seven patients (87.5%) achieved complete remission (CR), and 5 maintained CR as of the last follow-up visit. In the CNS involvement group, patients treated with aggressive chemotherapy died of sepsis, and those treated with a combination of rituximab, whole-brain radiation therapy, and reduction of immunosuppression achieved long-term progression-free survival without reinstitution of dialysis or neurological toxicity. The clinical courses of these 8 kidney transplant recipients who developed PTLD, most of whom had CNS involvement, suggest that long-term remission may be achievable without systemic chemotherapy.</p>","PeriodicalId":13992,"journal":{"name":"International Journal of Hematology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144730309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Humoral immunity after hematopoietic stem cell transplantation: evaluation by B-cell receptor repertoire analysis.","authors":"Sakuya Matsumoto, Yohei Funakoshi, Kimikazu Yakushijin, Takaji Matsutani, Yuri Okazoe-Hirakawa, Goh Ohji, Taiji Koyama, Yoshiaki Nagatani, Keiji Kurata, Shiro Kimbara, Naomi Kiyota, Hironobu Minami","doi":"10.1007/s12185-025-04042-9","DOIUrl":"https://doi.org/10.1007/s12185-025-04042-9","url":null,"abstract":"<p><p>Immunity acquired before hematopoietic stem cell transplantation (HSCT) may decrease or disappear following HSCT, and it is unclear whether the first vaccination after HSCT in patients with an antigen exposure history before HSCT elicits a primary or secondary immune response. The Quantification of Antigen-Specific Antibody Sequence (QASAS) method enables real-time assessment of responses to SARS-CoV-2 antigen exposure through B-cell receptor (BCR) repertoire analysis. Using this method, we evaluated the disappearance of immunological memory after HSCT. First, in individuals without hematologic disorders, primary SARS-CoV-2 antigen exposure elicited no immune response at 7 days post-exposure but demonstrated activation between 14 to 21 days. In contrast, repeated exposure elicited early responses (secondary immune responses) at 7 days post-exposure. We then enrolled HSCT patients with pre-HSCT SARS-CoV-2 antigen exposure history and collected samples before and after vaccination. Despite prior exposure history, patients receiving their first vaccination after HSCT showed no response around 7 days post-exposure but responded at 14 days. In conclusion, even with pre-HSCT antigen exposure, the first vaccination after HSCT induced a primary immune response. This demonstrates that first vaccination after HSCT should be considered to induce a primary immune response, regardless of previous infection or vaccination history.</p>","PeriodicalId":13992,"journal":{"name":"International Journal of Hematology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144707432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Expression profiling of Epstein-Barr virus-derived microRNA in systemic chronic active EBV disease.","authors":"Mayumi Yoshimori, Miwako Nishio, Ayaka Ohashi, Yuri Maekawa, Runa Shimomaki, Morito Kurata, Kotaro Yoshioka, Takanori Yokota, Ryusuke Nabeshima, Ayako Arai","doi":"10.1007/s12185-025-04040-x","DOIUrl":"https://doi.org/10.1007/s12185-025-04040-x","url":null,"abstract":"<p><p>Systemic chronic active Epstein-Barr virus disease (sCAEBV) is an intractable disorder characterized by clonal proliferation of EBV-infected T- and NK-cells, leading to persistent systemic inflammation and progression to hemophagocytic lymphohistiocytosis (HLH). The EBV genome encodes 40 mature microRNAs known as miR-BARTs. The expression of miR-BARTs has been reported in other EBV-positive diseases and is associated with tumorigenesis. In this study, we investigated the expression of miR-BARTs in sCAEBV. Expression of miR-BARTs was highly abundant in 4 sCAEBV-derived EBV-positive T- or NK-cell lines and in EBV-infected T- or NK-cells from 23 sCAEBV patients. The highest expression levels were observed for miR-BART7-3p. Sequence analysis revealed no deletions in the EBV genome encoding miR-BARTs. Inhibition of miR-BART7-3p altered the expression of immune-related genes in sCAEBV-derived cell lines. Abundant miR-BART expression was also observed in patients' plasma, with miR-BART7-3p showing the highest levels. Notably, miR-BART7-3p expression was detected in macrophages within the spleen of an sCAEBV patient with HLH. These findings suggest that miR-BARTs are highly expressed and secreted by EBV-infected cells in sCAEBV. We hypothesize that secreted miR-BARTs may be taken up by monocytes, potentially regulating their functions and contributing to inflammation in sCAEBV. Further studies are needed to elucidate these mechanisms.</p>","PeriodicalId":13992,"journal":{"name":"International Journal of Hematology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144707431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cardiovascular toxicity from tyrosine kinase inhibitors in chronic myeloid leukemia with severe dilated cardiomyopathy.","authors":"Kenta Hayashino, Naoya Mochizuki, Akihiro Kawatsuki, Yuki Fujiwara, Hiroki Kobayashi, Tomoko Yamasaki, Takeru Asano, Shiro Kubonishi, Yasushi Hiramatsu","doi":"10.1007/s12185-025-04041-w","DOIUrl":"https://doi.org/10.1007/s12185-025-04041-w","url":null,"abstract":"<p><p>Tyrosine kinase inhibitors (TKIs) have significantly improved the prognosis of patients with chronic myeloid leukemia (CML). However, few patients maintain remission after discontinuing TKIs, and most require long-term treatment. Prolonged use of TKIs is associated with an increased risk of cardiovascular events (CVEs), particularly in patients with pre-existing cardiovascular comorbidities. We present the case of a 37-year-old man with a decade-long history of severe dilated cardiomyopathy that responded inadequately to standard pharmacologic management, who was under consideration for heart transplantation. Following a diagnosis of CML, the patient experienced various CVEs with TKIs, including dasatinib, bosutinib, imatinib, and nilotinib. These agents were discontinued, and treatment was switched to asciminib, a novel agent that targets the myristoyl pocket of the BCR::ABL1 protein distinct from the ATP-binding site targeted by conventional TKIs. This treatment was well tolerated without any CVEs. Given its minimal off-target activity and lower reported incidence of CVEs, asciminib may offer a viable and safer therapeutic option for CML patients with advanced cardiovascular comorbidities, including those awaiting heart transplantation.</p>","PeriodicalId":13992,"journal":{"name":"International Journal of Hematology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144690134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maria Assunta Limongiello, Elisabetta Metafuni, Sabrina Giammarco, Eugenio Galli, Federica Sorà, Francesco Autore, Silvia Baroni, Patrizia Chiusolo, Simona Sica
{"title":"High-dose thiotepa may induce inappropriate secretion of antidiuretic hormone syndrome (SIADH) during conditioning treatment for allogeneic stem cell transplantation.","authors":"Maria Assunta Limongiello, Elisabetta Metafuni, Sabrina Giammarco, Eugenio Galli, Federica Sorà, Francesco Autore, Silvia Baroni, Patrizia Chiusolo, Simona Sica","doi":"10.1007/s12185-025-04032-x","DOIUrl":"https://doi.org/10.1007/s12185-025-04032-x","url":null,"abstract":"<p><p>We conducted a retrospective, single-center, observational cohort study in patients with inappropriate secretion of antidiuretic hormone syndrome (SIADH) induced by high-dose thiotepa during conditioning for allogeneic stem cell transplantation (allo-HSCT). Between May 2018 and December 2023, 431 patients underwent allo-HSCT. All patients who developed SIADH had received TBF conditioning, and the incidence of SIADH among TBF-treated patients was 7.3%. Despite its limitations as a retrospective study, this real-life analysis shows that hyponatremia with corresponding serum hypo-osmolality and persistent urinary sodium excretion is compatible with a diagnosis of SIADH in the presence of normovolemia. Fluid balance and electrolyte levels should be closely monitored during conditioning to ensure prompt detection of SIADH promptly and enable immediate treatment.</p>","PeriodicalId":13992,"journal":{"name":"International Journal of Hematology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144636978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}