Leukemia Research Reports最新文献

{"title":"Tyrosine kinase inhibitors modulate the expression of peroxiredoxins 1 and 2 in chronic myeloid leukemia cells","authors":"Hiroshi Kazama ,&nbsp;Yan-Hua Wang ,&nbsp;Junji Tanaka","doi":"10.1016/j.lrr.2025.100508","DOIUrl":"10.1016/j.lrr.2025.100508","url":null,"abstract":"<div><div>Chronic myeloid leukemia (CML) is characterized by the presence of the BCR::ABL1 fusion protein with active tyrosine kinase activity. The BCR::ABL1 fusion protein induces the production of reactive oxygen species (ROS). DNA damage caused by ROS is involved in the mechanism of CML progression. Antioxidant systems include peroxiredoxins (PRDXs), which play various roles in hematological malignancies. Although tyrosine kinase inhibitors (TKIs) are known to affect ROS production, their effects on the expression of the antioxidants PRDX1 and PRDX2 remain unclear; thus, we aimed to evaluate the effects of TKIs on the expression of these PRDXs and ROS levels in CML cells. We found that TKIs, such as imatinib, nilotinib, and dasatinib, increased the gene expression of <em>PRDX2</em> in K562 cells; however, only dasatinib increased the cytoplasmic protein expression of PRDX2. Additionally, while TKIs reduced the gene expression of <em>PRDX1</em> in contrast to that of <em>PRDX2</em>, dasatinib increased the cytoplasmic protein expression of PRDX1. This discrepancy was linked to post-translational regulation through SUMOylation in cooperation with dasatinib. Our results suggest that the antioxidants PRDX1 and PRDX2 could serve as potential targets for TKIs in the treatment of CML.</div></div>","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"23 ","pages":"Article 100508"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Management of Philadelphia chromosome-positive B-cell acute lymphoblastic leukemia in a Jehovah’s Witness using chemotherapy free regimen: A case report and review of literature","authors":"Muhammad Hassan Raza ,&nbsp;Eiraj Khan ,&nbsp;Alexis M Desjarlais ,&nbsp;Salman Fazal","doi":"10.1016/j.lrr.2025.100517","DOIUrl":"10.1016/j.lrr.2025.100517","url":null,"abstract":"<div><h3>Introduction and Importance</h3><div>Treatment of Philadelphia chromosome-positive acute lymphoblastic leukemia (pH-positive ALL) in Jehovah’s Witness (JW) using chemotherapy agents, opens an ethically and morally challenging paradigm instead of their religious practices.</div></div><div><h3>Case Presentation</h3><div>We present a case of pH-positive B cell ALL in a Jehovah's Witness patient who refused the transfusion of blood as a part of their treatment regimen. We intended to treat this patient using a new “chemotherapy-free” approach and achieved Minimal Residual Disease (MRD) negative state with durable outcomes for the next three years.</div></div><div><h3>Clinical Discussion</h3><div>With “chemotherapy-free” regimen, we achieved complete molecular remission without any significant side effects in our patient.</div></div><div><h3>Conclusion</h3><div>Chemo-free approach is a promising opportunity to treat Jehovah’s witnesses with pH-positive B cell ALL as the haemoglobin and platelets remained above transfusion thresholds. However, further research is required to fully understand and implement this approach. Future clinical trials should consider including this unique patient population to better understand their needs and improve outcomes.</div></div>","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"24 ","pages":"Article 100517"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic and taxonomic challenges in chronic myelomonocytic leukemia with lymph node involvement: A case report and mini-review","authors":"Bhaumik Shah ,&nbsp;Mitra Abdollahi-Neisani ,&nbsp;Pegah Taheri ,&nbsp;Asya Varshavsky ,&nbsp;Reza Nejati ,&nbsp;Nicholas Mackrides","doi":"10.1016/j.lrr.2025.100520","DOIUrl":"10.1016/j.lrr.2025.100520","url":null,"abstract":"<div><div>The WHO and ICC classifications lack standardized terminology to define the disease phase of chronic myeloproliferative neoplasms in extramedullary sites, particularly lymph nodes, when infiltrates resemble extramedullary hematopoiesis (EH). We report a lymph node case of extramedullary chronic myelomonocytic leukemia (CMML) in blast phase mimicking EH. Comprehensive genomic profiling, using chromosomal microarray and NGS-based sequencing, identified copy neutral loss of heterozygosity (cn-LOH), previously unreported in extramedullary CMML. We discuss challenges in determining the CMML disease phase in lymph nodes and review the literature to underscore the need for consensus terminology for cases not meeting myeloid sarcoma criteria.</div></div>","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"24 ","pages":"Article 100520"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Treatment of Vietnamese patients diagnosed with myelodysplastic neoplasms: Practical experience in a developing country","authors":"Quang Hao Nguyen ,&nbsp;Minh Phuong Vu ,&nbsp;Ha Trang Kieu ,&nbsp;Duc Binh Vu ,&nbsp;Ha Thanh Nguyen ,&nbsp;Quoc Khanh Bach","doi":"10.1016/j.lrr.2024.100490","DOIUrl":"10.1016/j.lrr.2024.100490","url":null,"abstract":"<div><h3>Background</h3><div>Treatment of patients diagnosed with myelodysplastic neoplasms (MDS) is difficult and the outcome is still limited, especially in developing countries. We conducted this study in order to share some experience in treating patients diagnosed with MDS in developing countries.</div></div><div><h3>Methods</h3><div>This was a retrospective study that included 32 patients with newly MDS. 13 lower-risk patients, including 2 patients with MDS 5q- were treated with erythropoiesis stimulating agent (ESA). 19 patients with higher risk were treated with hypomethylating agent (HMA), which was decitabine.</div></div><div><h3>Results</h3><div>In the ESA treatment group, the rate of hematologic improvement-erythroid was 69.2 %, the rate of total hematologic improvement (with 3 lineages improvement) was 61.5 %. In the HMA treatment group, the overall response rate was 52.6 %. The follow-up times were 42 months. The overall survival (OS), leukemic transformation-free survival (LFS), and progression-free survival (PFS) of the ESA treatment group were 30.44, 28.91, and 28.29 months; respectively. The OS, LFS, and PFS of the HMA treatment group were 34.27, 31.45, and 26.83 months; respectively<strong>.</strong></div></div><div><h3>Conclusions</h3><div>Patients with lower risk MDS, including MDS 5q-, may benefit from treatment with erythropoiesis stimulating agent (ESA). Patients with higher risk MDS may have a favorable outcome with decitabine (HMA) treatment.</div></div>","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"23 ","pages":"Article 100490"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A rare case of CD38-negative abdominal multiple extramedullary plasmacytoma and literature review","authors":"XS Bao,&nbsp;DH Gong,&nbsp;KG Zhou,&nbsp;W Huang","doi":"10.1016/j.lrr.2024.100493","DOIUrl":"10.1016/j.lrr.2024.100493","url":null,"abstract":"<div><div>Abdominal multiple extramedullary plasmacytoma (EMP) is a rare disease. CD38-negative relapsed/refractory EMP after treatment with daratumumab has never been reported. In 2020, a patient with jaundice was diagnosed with plasmacytoma in another hospital, which progressed one year after receiving multiline therapy. In July 2021, he was admitted to our hospital and showed CD38-pogative plasmacytoma. The patient received 2 cycles of treatment including daratumumab, venetoclax and DCEP chemotherapy and achieved partial remission. However, he developed ascites and eventually died. Our case indicated that multiple EMP has much lower incidence and far worse prognosis than solitary EMP.</div></div>","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"23 ","pages":"Article 100493"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11731487/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142984853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Management of relapsed acute lymphoblastic leukemia in a patient with down syndrome: A case report","authors":"Eman Almatar,&nbsp;Sondus Alsharidah,&nbsp;Omnia A. Hashem","doi":"10.1016/j.lrr.2025.100543","DOIUrl":"10.1016/j.lrr.2025.100543","url":null,"abstract":"<div><div>Children with Down syndrome (DS) have a 10–20-fold increased risk of acute lymphoblastic leukemia (ALL) and heightened chemotherapy toxicity. Blinatumomab, a bispecific CD19 × CD3 T-cell engager, offers targeted immunotherapy with reduced myelotoxicity. We describe a 9-year-old girl with DS diagnosed with B-cell precursor ALL in early 2021 who relapsed during maintenance in September 2023. After reinduction, she received two 28-day blinatumomab cycles: the first resulted in &lt;5 % blasts and undetectable minimal residual disease (MRD), and the second was well tolerated. She remains in remission pending allogeneic hematopoietic stem cell transplantation, highlighting blinatumomab’s efficacy and safety as a bridge to transplantation.</div></div>","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"24 ","pages":"Article 100543"},"PeriodicalIF":0.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145094825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Real-world management of blastic plasmacytoid dendritic cell neoplasm at an academic center with a broad regional referral base","authors":"Nathan M. Krah ,&nbsp;Rasmus Hoeg ,&nbsp;Paul J. Shami ,&nbsp;Shannon E. Elf ,&nbsp;Lauren E. Lee ,&nbsp;Naveen Pemmaraju ,&nbsp;Ami B. Patel","doi":"10.1016/j.lrr.2025.100541","DOIUrl":"10.1016/j.lrr.2025.100541","url":null,"abstract":"<div><div>BPDCN is an aggressive myeloid malignancy characterized by unique expression of CD123, CD4, CD56, CD303, CD304, TCL1 and TCF4. The development of tagraxofusp, a CD123-directed cytotoxin, has revolutionized BPDCN treatment, especially for patients unfit for chemotherapy. While most patients respond to frontline tagraxofusp, there are challenges associated with treatment. In this case series, we describe our institutional experience treating BPDCN both pre- and post-tagraxofusp approval. We summarize six cases, the majority of which occurred in elderly patients, and highlight unique challenges of treating BPDCN at a center that serves a large rural/frontier area with variable access to specialty care.</div></div>","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"24 ","pages":"Article 100541"},"PeriodicalIF":0.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144906947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isolated bone marrow gamma/delta T-cell lymphoma: A difficult case to classify according to the current WHO classification of lymphoid malignancies","authors":"Hideto Hyuuga ,&nbsp;Naoki Oishi ,&nbsp;Takuma Kumagai ,&nbsp;Minori Matuura ,&nbsp;Ayato Nakadate ,&nbsp;Yuma Sakamoto ,&nbsp;Jun Suzuki ,&nbsp;Megumi Suzuki ,&nbsp;Megumi Koshiisi ,&nbsp;Ichiro Kawashima ,&nbsp;Takeo Yamamoto ,&nbsp;Kei Nakajima ,&nbsp;Masaru Tanaka ,&nbsp;Tetuso Kondo ,&nbsp;Keita Kirito","doi":"10.1016/j.lrr.2025.100539","DOIUrl":"10.1016/j.lrr.2025.100539","url":null,"abstract":"","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"24 ","pages":"Article 100539"},"PeriodicalIF":0.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"BCR::ABL1 kinase domain mutations and their predictive value for treatment outcomes in patients with chronic myeloid leukemia treated with first-line imatinib in a low-income setting: Experience from Côte d’Ivoire","authors":"Kouassi Gustave Koffi ,&nbsp;Sara Akou Bognini ,&nbsp;Dohoma Alexis Silué ,&nbsp;Ismael Kamara ,&nbsp;Ines Kouakou ,&nbsp;Ruth Dieket ,&nbsp;Emeraude N’dhatz ,&nbsp;Boidy Kouakou ,&nbsp;Danho Clotaire Nanho ,&nbsp;Yannick Kouassi ,&nbsp;David Tea Okou","doi":"10.1016/j.lrr.2025.100544","DOIUrl":"10.1016/j.lrr.2025.100544","url":null,"abstract":"<div><h3>Background</h3><div>We aimed to analyse the incidence of BCR::ABL1 kinase domain mutations in patients newly diagnosed with or undergoing treatment for chronic myeloid leukemia (CML) in Côte d’Ivoire, as well as to evaluate the predictive factors associated with treatment outcomes.</div></div><div><h3>Methods</h3><div>We evaluated 42 patients with suboptimal molecular response who underwent BCR::ABL1 kinase domain mutation screening. Sequencing was performed in collaboration with the Fred Hutchinson Cancer Research Center, Seattle, USA.</div></div><div><h3>Results</h3><div>Among the 42 patients, 16 (38.1%) were found to have known BCR::ABL1 point mutations. A total of nine distinct mutations were identified, with T315I being the most common (5). Three patients harbored compound mutations: one had T315I + M244V, another had G250E + E459K, and the third had H396P + E459K. The 5-year overall survival (OS) rate was significantly lower in patients with BCR::ABL1 mutations (85%; 95 % CI: 51.0%–96.1%) compared to those without mutations (100%). However, there was no statistically significant difference in OS between patients with T315I mutations (83.3 %; 95 % CI: 27.4%–97.5%) and those without T315I (83.3%; 95% CI: 5.9%–98.8%). Being in the chronic phase of the disease and having a low-risk ELTS score were identified as protective factors against the development of mutations.</div></div><div><h3>Conclusion</h3><div>Our findings support the recommendation for BCR::ABL1 mutation screening in CML patients with an inadequate initial response or evidence of loss of response. Screening is also advised at progression to the accelerated or blast phase, and in patients with high-risk ELTS scores, and mutation profiles may serve as important prognostic indicators.</div></div>","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"24 ","pages":"Article 100544"},"PeriodicalIF":0.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catastrophic asparaginase-induced cerebral and systemic thrombosis in a young female with T-cell lymphoblastic lymphoma: A case report & literature review","authors":"Shihab Ahmed Ibrahim Ahmed,&nbsp;Amr Suliman AlHanbali","doi":"10.1016/j.lrr.2025.100526","DOIUrl":"10.1016/j.lrr.2025.100526","url":null,"abstract":"<div><div>Asparaginase is a cornerstone in the treatment of acute lymphoblastic leukemia (ALL) and its variant, T-cell lymphoblastic lymphoma (T-LBL), particularly in adolescents and young adults (AYA). However, its use is associated with a significant risk of thrombotic complications due to its profound effects on coagulation pathways. We report a catastrophic case of asparaginase-induced cerebral and systemic thrombosis in a previously healthy 20-year-old female with T-LBL. Despite prophylactic anticoagulation, the patient developed extensive cerebral venous sinus thrombosis, deep vein thrombosis, and pulmonary embolism, necessitating mechanical thrombectomy, Argatroban therapy, and long-term anticoagulation. This case underscores the multifactorial pathophysiology of asparaginase-associated thrombosis and highlights the need for individualized risk assessment, vigilant monitoring, and dynamic anticoagulation strategies. A comprehensive literature review is provided to contextualize the epidemiology, mechanisms, risk factors, prevention, and management of this life-threatening complication, with practical recommendations for optimizing care in high-risk patients.</div></div>","PeriodicalId":38435,"journal":{"name":"Leukemia Research Reports","volume":"24 ","pages":"Article 100526"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}