Jennifer E. Bruno, Christine A. Herne, Andrea M. Baran, Karl R. VanDerMeid, Paul M. Barr, Alyssa R. Williams, Sally A. Quataert, Tim R. Mosmann, Clive S. Zent, Charles C. Chu
{"title":"PI3Kδ抑制剂和抗cd20抗体治疗复发/难治性CLL患者可迅速降低肿瘤负荷,但可能引起耐药性","authors":"Jennifer E. Bruno, Christine A. Herne, Andrea M. Baran, Karl R. VanDerMeid, Paul M. Barr, Alyssa R. Williams, Sally A. Quataert, Tim R. Mosmann, Clive S. Zent, Charles C. Chu","doi":"10.1002/ajh.27569","DOIUrl":null,"url":null,"abstract":"<p>Multi-drug combination strategy targeting three different molecules involved in different pathways to overcome single-agent resistance in relapsed/refractory CLL patients. The clinical trial utilized 1)a therapeutic anti-CD20 monoclonal antibody (mAb), ublituximab, which destroys CLL cells by an antibody-dependent cellular phagocytosis (ADCP) mechanism; 2)a B cell receptor (BCR) signaling inhibitor, umbralisib, which blocks PI3Kẟ; 3)and an anti-apoptosis inhibitor, venetoclax, which blocks cell survival promoted by BCL-2 that stops mitochondria from initiating apoptosis. Our correlative study focused on the first two treatments prior to venetoclax addition. We found that patients respond to anti-CD20 antibody and BCR signaling inhibition with rapid reductions in CLL cell counts and CD20 levels. Standard high dose (375 mg/m2) anti-CD20 antibody treatment significantly decreased CLL surface CD20 levels, potentially limiting treatment efficacy. Anti-CD20 antibody plus B cell receptor signaling inhibition reduced CLL cell counts and lymph node tumors, enabling BCL-2 inhibitor treatment to avoid tumor lysis syndrome.\n <figure>\n <div><picture>\n <source></source></picture><p></p>\n </div>\n </figure>\n </p>","PeriodicalId":7724,"journal":{"name":"American Journal of Hematology","volume":"100 3","pages":"523-526"},"PeriodicalIF":9.9000,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajh.27569","citationCount":"0","resultStr":"{\"title\":\"Treatment of Relapsed/Refractory CLL Patients With PI3Kδ Inhibitor and Anti-CD20 Antibody Rapidly Decreases Tumor Burden but Could Induce Resistance\",\"authors\":\"Jennifer E. Bruno, Christine A. Herne, Andrea M. Baran, Karl R. VanDerMeid, Paul M. Barr, Alyssa R. Williams, Sally A. Quataert, Tim R. Mosmann, Clive S. Zent, Charles C. Chu\",\"doi\":\"10.1002/ajh.27569\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Multi-drug combination strategy targeting three different molecules involved in different pathways to overcome single-agent resistance in relapsed/refractory CLL patients. The clinical trial utilized 1)a therapeutic anti-CD20 monoclonal antibody (mAb), ublituximab, which destroys CLL cells by an antibody-dependent cellular phagocytosis (ADCP) mechanism; 2)a B cell receptor (BCR) signaling inhibitor, umbralisib, which blocks PI3Kẟ; 3)and an anti-apoptosis inhibitor, venetoclax, which blocks cell survival promoted by BCL-2 that stops mitochondria from initiating apoptosis. Our correlative study focused on the first two treatments prior to venetoclax addition. We found that patients respond to anti-CD20 antibody and BCR signaling inhibition with rapid reductions in CLL cell counts and CD20 levels. Standard high dose (375 mg/m2) anti-CD20 antibody treatment significantly decreased CLL surface CD20 levels, potentially limiting treatment efficacy. Anti-CD20 antibody plus B cell receptor signaling inhibition reduced CLL cell counts and lymph node tumors, enabling BCL-2 inhibitor treatment to avoid tumor lysis syndrome.\\n <figure>\\n <div><picture>\\n <source></source></picture><p></p>\\n </div>\\n </figure>\\n </p>\",\"PeriodicalId\":7724,\"journal\":{\"name\":\"American Journal of Hematology\",\"volume\":\"100 3\",\"pages\":\"523-526\"},\"PeriodicalIF\":9.9000,\"publicationDate\":\"2025-01-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajh.27569\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"American Journal of Hematology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/ajh.27569\",\"RegionNum\":1,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"HEMATOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Journal of Hematology","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ajh.27569","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"HEMATOLOGY","Score":null,"Total":0}
Treatment of Relapsed/Refractory CLL Patients With PI3Kδ Inhibitor and Anti-CD20 Antibody Rapidly Decreases Tumor Burden but Could Induce Resistance
Multi-drug combination strategy targeting three different molecules involved in different pathways to overcome single-agent resistance in relapsed/refractory CLL patients. The clinical trial utilized 1)a therapeutic anti-CD20 monoclonal antibody (mAb), ublituximab, which destroys CLL cells by an antibody-dependent cellular phagocytosis (ADCP) mechanism; 2)a B cell receptor (BCR) signaling inhibitor, umbralisib, which blocks PI3Kẟ; 3)and an anti-apoptosis inhibitor, venetoclax, which blocks cell survival promoted by BCL-2 that stops mitochondria from initiating apoptosis. Our correlative study focused on the first two treatments prior to venetoclax addition. We found that patients respond to anti-CD20 antibody and BCR signaling inhibition with rapid reductions in CLL cell counts and CD20 levels. Standard high dose (375 mg/m2) anti-CD20 antibody treatment significantly decreased CLL surface CD20 levels, potentially limiting treatment efficacy. Anti-CD20 antibody plus B cell receptor signaling inhibition reduced CLL cell counts and lymph node tumors, enabling BCL-2 inhibitor treatment to avoid tumor lysis syndrome.
期刊介绍:
The American Journal of Hematology offers extensive coverage of experimental and clinical aspects of blood diseases in humans and animal models. The journal publishes original contributions in both non-malignant and malignant hematological diseases, encompassing clinical and basic studies in areas such as hemostasis, thrombosis, immunology, blood banking, and stem cell biology. Clinical translational reports highlighting innovative therapeutic approaches for the diagnosis and treatment of hematological diseases are actively encouraged.The American Journal of Hematology features regular original laboratory and clinical research articles, brief research reports, critical reviews, images in hematology, as well as letters and correspondence.