Concerns about the efficacy of high-dose methotrexate (HD-MTX) in preventing CNS recurrence in large B-cell lymphomas (LBCL) are based on studies with interpretation biases and incomplete information about HD-MTX dosing schedule and CNS events. We evaluated a pharmacokinetic-informed, CNS-directed HD-MTX protocol (3 g/m2 over 3 h, preceded by a bolus) in 336 LBCL patients achieving CMR after RCHOP or derivatives. HD-MTX use was based on institutional risk scores. In this study, CNS risk was reassessed using updated criteria: CNS-IPI ≥ 4, ≥ 3 extranodal sites, or involvement of testis, kidney, adrenal gland, uterus, or breast. According to these criteria, risk was low in 228 (68%) patients and high in 108 (32%); HD-MTX was given to 20 (9%) and 49 (45%), respectively. HD-MTX was well tolerated: 96% completed therapy. After a median follow-up of 77 months, 13 (4%) patients experienced CNS relapse, always as isolated events. Among high-risk patients, CNS relapse occurred in 19% (11/59) without HD-MTX versus 0% (0/49) with HD-MTX (p = 0.0009); significant reductions were seen in patients with high-risk organ involvement (32% to 0%, p = 0.002) or ≥ 3 extranodal sites (18% to 0%, p = 0.04). HD-MTX was independently associated with improved PFS and OS in high-risk patients, likely due to reduced CNS relapses (0% vs. 19%; p = 0.0009), whereas rates of unrelated deaths (8% vs. 15%; p = 0.26) and systemic relapses (18% vs. 22%; p = 0.81) were similar. In conclusion, HD-MTX, administered via a pharmacokinetic-informed, CNS-directed schedule, with or without intrathecal chemotherapy, significantly reduces CNS relapses and improves outcomes in high-risk LBCL patients in CMR. Trial Registration: ClinicalTrials.gov Identifier: NCT07181785.
{"title":"Three-Hour Infusion of Methotrexate at 3 g/m2 With or Without Intrathecal Chemotherapy Significantly Reduces CNS Relapses and Improves Survival in Patients With Large B-Cell Lymphomas at Increased CNS Risk.","authors":"Andrés J M Ferreri,Federico Erbella,Piera Angelillo,Lorenza Pecciarini,Lucia Bongiovanni,Alessandro Nonis,Maria Giulia Cangi,Maddalena V Ponti,Luca Saliani,Paolo Fiore,Marta Bruno-Ventre,Stefania Girlanda,Fabrizio Marino,Elena Flospergher,Giulio Cassanello,Fanny Palumbo,Teresa Calimeri,Maurilio Ponzoni","doi":"10.1002/ajh.70283","DOIUrl":"https://doi.org/10.1002/ajh.70283","url":null,"abstract":"Concerns about the efficacy of high-dose methotrexate (HD-MTX) in preventing CNS recurrence in large B-cell lymphomas (LBCL) are based on studies with interpretation biases and incomplete information about HD-MTX dosing schedule and CNS events. We evaluated a pharmacokinetic-informed, CNS-directed HD-MTX protocol (3 g/m2 over 3 h, preceded by a bolus) in 336 LBCL patients achieving CMR after RCHOP or derivatives. HD-MTX use was based on institutional risk scores. In this study, CNS risk was reassessed using updated criteria: CNS-IPI ≥ 4, ≥ 3 extranodal sites, or involvement of testis, kidney, adrenal gland, uterus, or breast. According to these criteria, risk was low in 228 (68%) patients and high in 108 (32%); HD-MTX was given to 20 (9%) and 49 (45%), respectively. HD-MTX was well tolerated: 96% completed therapy. After a median follow-up of 77 months, 13 (4%) patients experienced CNS relapse, always as isolated events. Among high-risk patients, CNS relapse occurred in 19% (11/59) without HD-MTX versus 0% (0/49) with HD-MTX (p = 0.0009); significant reductions were seen in patients with high-risk organ involvement (32% to 0%, p = 0.002) or ≥ 3 extranodal sites (18% to 0%, p = 0.04). HD-MTX was independently associated with improved PFS and OS in high-risk patients, likely due to reduced CNS relapses (0% vs. 19%; p = 0.0009), whereas rates of unrelated deaths (8% vs. 15%; p = 0.26) and systemic relapses (18% vs. 22%; p = 0.81) were similar. In conclusion, HD-MTX, administered via a pharmacokinetic-informed, CNS-directed schedule, with or without intrathecal chemotherapy, significantly reduces CNS relapses and improves outcomes in high-risk LBCL patients in CMR. Trial Registration: ClinicalTrials.gov Identifier: NCT07181785.","PeriodicalId":7724,"journal":{"name":"American Journal of Hematology","volume":"2 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147454345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jorge J. Castillo, Andrew R. Branagan, Alberto Guijosa, Gottfried von Keudell, Andres Ramirez‐Gamero, Hannah Chory, Margaret Kobs, Nina Budano, Julia Nguyen, Alexandra Eurell, Courtney Boyajian, Kirsten Meid, Maria Luisa Guerrera, Amanda Kofides, Shirong Liu, Xia Liu, Nicholas Tsakmaklis, Zachary R. Hunter, Christopher J. Patterson, Steven P. Treon, Shayna Sarosiek
The BTK inhibitor ibrutinib and the BCL‐2 antagonist venetoclax are active therapies as single agents in Waldenström macroglobulinemia (WM). In this phase 2 study, we sought to investigate the combination of ibrutinib and venetoclax as a 2‐year fixed‐duration, oral‐based, chemotherapy‐free regimen in symptomatic, treatment‐naive WM patients. All patients had MYD88 mutations, 17 (38%) had CXCR4 mutations, and 4 (9%) had TP53 alterations. Following enrollment of 45 patients, treatment and enrollment were stopped due to the occurrence of ventricular arrhythmias in 4 (9%), which included two grade 5 events. The median treatment time was 10 cycles, each lasting 28 days. Follow‐up continued after protocol treatment was terminated. The very good partial response/complete response (VGPR/CR) rate was 42%, and it was lower in patients with CXCR4 (29% vs. 50%) or TP53 (25% vs. 44%) mutations. With a median follow‐up of 49 months, the median progression‐free survival (PFS) was 36 months (range 28–42). The median treatment‐free survival (TFS) and overall survival (OS) were not reached, and the 4‐year TFS and OS rates were 73% and 91%, respectively. The median PFS after end of therapy (PFS‐EOT) was 29 months. TP53 mutations were associated with inferior PFS, TFS, and PFS‐EOT, while CXCR4 mutations did not adversely impact these outcomes. Given the deep and durable responses seen in this study, concurrent BTK and BCL‐2 inhibition warrants further development in WM. TP53 mutations emerged as an adverse factor in WM in this combination study.
{"title":"Final Report of a Phase II Study of Ibrutinib and Venetoclax in Previously Untreated Waldenström Macroglobulinemia","authors":"Jorge J. Castillo, Andrew R. Branagan, Alberto Guijosa, Gottfried von Keudell, Andres Ramirez‐Gamero, Hannah Chory, Margaret Kobs, Nina Budano, Julia Nguyen, Alexandra Eurell, Courtney Boyajian, Kirsten Meid, Maria Luisa Guerrera, Amanda Kofides, Shirong Liu, Xia Liu, Nicholas Tsakmaklis, Zachary R. Hunter, Christopher J. Patterson, Steven P. Treon, Shayna Sarosiek","doi":"10.1002/ajh.70285","DOIUrl":"https://doi.org/10.1002/ajh.70285","url":null,"abstract":"The BTK inhibitor ibrutinib and the BCL‐2 antagonist venetoclax are active therapies as single agents in Waldenström macroglobulinemia (WM). In this phase 2 study, we sought to investigate the combination of ibrutinib and venetoclax as a 2‐year fixed‐duration, oral‐based, chemotherapy‐free regimen in symptomatic, treatment‐naive WM patients. All patients had <jats:italic>MYD88</jats:italic> mutations, 17 (38%) had <jats:italic>CXCR4</jats:italic> mutations, and 4 (9%) had <jats:italic>TP53</jats:italic> alterations. Following enrollment of 45 patients, treatment and enrollment were stopped due to the occurrence of ventricular arrhythmias in 4 (9%), which included two grade 5 events. The median treatment time was 10 cycles, each lasting 28 days. Follow‐up continued after protocol treatment was terminated. The very good partial response/complete response (VGPR/CR) rate was 42%, and it was lower in patients with <jats:italic>CXCR4</jats:italic> (29% vs. 50%) or <jats:italic>TP53</jats:italic> (25% vs. 44%) mutations. With a median follow‐up of 49 months, the median progression‐free survival (PFS) was 36 months (range 28–42). The median treatment‐free survival (TFS) and overall survival (OS) were not reached, and the 4‐year TFS and OS rates were 73% and 91%, respectively. The median PFS after end of therapy (PFS‐EOT) was 29 months. <jats:italic>TP53</jats:italic> mutations were associated with inferior PFS, TFS, and PFS‐EOT, while <jats:italic>CXCR4</jats:italic> mutations did not adversely impact these outcomes. Given the deep and durable responses seen in this study, concurrent BTK and BCL‐2 inhibition warrants further development in WM. <jats:italic>TP53</jats:italic> mutations emerged as an adverse factor in WM in this combination study.","PeriodicalId":7724,"journal":{"name":"American Journal of Hematology","volume":"2 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147454684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Adetola A. Kassim, Alexis A. Thompson, Punam Malik
The practical aspects of developing curative treatments for sickle cell disease (SCD) in Africa, such as gene therapy and hematopoietic stem cell transplantation, involve strengthening healthcare infrastructure, training healthcare professionals, establishing regional treatment centers, and creating national SCD programs. The costs associated with gene therapy and stem cell transplants can be prohibitive, especially in low‐ and middle‐income countries. Strategies to address affordability, including local manufacturing, government funding, and partnerships with global health agencies, are essential to ensure equitable access. Establishing ethical and regulatory guidelines while raising awareness among patients and communities is critical. Early diagnosis through newborn screening and adequate clinical care programs are vital for identifying individuals with SCD who could benefit from curative therapies and other interventions. Addressing cultural beliefs and promoting positive attitudes toward SCD and its management is essential. While curative therapies offer hope, hydroxyurea and other disease‐modifying therapies with established clinical benefits are more accessible in many settings. Prioritizing these medications ensures that patients with SCD are medically prepared to receive curative therapies while simultaneously building capacity for advanced treatments, thus creating a pragmatic approach. Lastly, international collaboration and partnerships among researchers, global health agencies, and local organizations are vital for sharing knowledge, resources, and best practices in SCD management.
{"title":"Exploring Affordable Curative Therapy for Sickle Cell Disease in Africa: A Comprehensive Overview","authors":"Adetola A. Kassim, Alexis A. Thompson, Punam Malik","doi":"10.1002/ajh.70221","DOIUrl":"https://doi.org/10.1002/ajh.70221","url":null,"abstract":"The practical aspects of developing curative treatments for sickle cell disease (SCD) in Africa, such as gene therapy and hematopoietic stem cell transplantation, involve strengthening healthcare infrastructure, training healthcare professionals, establishing regional treatment centers, and creating national SCD programs. The costs associated with gene therapy and stem cell transplants can be prohibitive, especially in low‐ and middle‐income countries. Strategies to address affordability, including local manufacturing, government funding, and partnerships with global health agencies, are essential to ensure equitable access. Establishing ethical and regulatory guidelines while raising awareness among patients and communities is critical. Early diagnosis through newborn screening and adequate clinical care programs are vital for identifying individuals with SCD who could benefit from curative therapies and other interventions. Addressing cultural beliefs and promoting positive attitudes toward SCD and its management is essential. While curative therapies offer hope, hydroxyurea and other disease‐modifying therapies with established clinical benefits are more accessible in many settings. Prioritizing these medications ensures that patients with SCD are medically prepared to receive curative therapies while simultaneously building capacity for advanced treatments, thus creating a pragmatic approach. Lastly, international collaboration and partnerships among researchers, global health agencies, and local organizations are vital for sharing knowledge, resources, and best practices in SCD management.","PeriodicalId":7724,"journal":{"name":"American Journal of Hematology","volume":"8 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2026-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147447217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}