JAMA Oncology:依鲁替尼胶囊在治疗慢性淋巴细胞白血病(CLL)终止的原因

2015-03-02 崔倩译 MedSci原创

根据在线发表在JAMA肿瘤学的研究显示,由于疾病在临床试验中的进展,约有10%的患有慢性淋巴细胞白血病(CLL)的患者终止了应用布鲁顿酪氨酸激酶(BTK)抑制剂药物依鲁替尼胶囊的治疗。       CLL是成人中最常见的白血病,它不被认为是可固化的不同种异体(供体)干细胞移植。然而,根据这项研究的背景,治疗已经取得了进展,特别是激酶抑制剂

根据在线发表在JAMA肿瘤学的研究显示,由于疾病在临床试验中的进展,约有10%的患有慢性淋巴细胞白血病(CLL)的患者终止了应用布鲁顿酪氨酸激酶(BTK)抑制剂药物依鲁替尼胶囊的治疗。
      
CLL是成人中最常见的白血病,它不被认为是可固化的不同种异体(供体)干细胞移植。然而,根据这项研究的背景,治疗已经取得了进展,特别是激酶抑制剂在疾病复发患者中的出现。
       
依鲁替尼胶囊是第一种被设计为靶向布鲁顿酪氨酸激酶的药物,该激酶是CLL细胞存活和增殖所必需的蛋白质。该药物是由美国食品药品监督管理局批准的应用于慢性淋巴细胞白血病和套细胞淋巴瘤中。由美国俄亥俄州立大学综合癌症中心的科学家- 亚瑟G.詹姆斯肿瘤医院和Richard J. Solove研究所(OSUCCC - 詹姆斯)进行的许多临床和基础科学的研究,使得依鲁替尼胶囊成为治疗CLL的药物。
      
血液学家医学博士Kami和医学博士Jennifer和同事们在James癌症医院的308名患者进行了4组临床试验,描述了终止使用依鲁替尼胶囊患者的特点和他们所得到的结果。
       
研究结果表明,通过中位数为20个月的随访,232例患者(75%)仍然在接受治疗,31例患者(10%)由于疾病的发展而终止了治疗,45例患者由于其他的原因(28例患者由于感染,8例患者由于其他原因,9例患者由于其他医疗事件)终止了治疗。
    
疾病的进展,包括李希特变换(当癌症成为一种侵袭性淋巴瘤)或渐进性慢性淋巴细胞性白血病。李希特的转变在早期和CLL进展后期出现。结果表明,在CLL进展中李希特转化中位数为3.5个月和17.6个月。
      
这项研究的资深作者Woyach说:“这些数据提高了我们对患者长期服用依鲁替尼胶囊会怎样以及哪些患者会倾向于复发的认识。我们知道许多服用依鲁替尼胶囊的患者会有持久的缓解,并了解哪些患者有更高的风险有助于我们选择谁将受益于临床试验研究其他新的药物和组合治疗,而不是依鲁替尼胶囊本身。我们已经证实了复发患者的特定的基因突变,在这些情况下,这给了我们使用其他药物可能会有效的想法。”
      
James癌症医院的研究人员得出结论,第一次这些数据证实了依鲁替尼胶囊作为有效治疗和识别停用依鲁替尼胶囊相关的基线因素。
     
马克多斯补充说:“结果数据显示,停药后预后差,特别是对那些李希特转变的患者。无论是渐进的淋巴细胞白血病或李希特式症患者往往需要停用依鲁替尼胶囊后迅速治疗,所以计划局部替代治疗是必要的。这些服用依鲁替尼胶囊并复发的患者仍然是确定新目标和新方法的研究重点,在James癌症医院我们有多项研究正在进行来帮助这些患者。”

原始出处

Kami J. Maddocks, Amy S. Ruppert, Gerard Lozanski, Nyla A. Heerema, Weiqiang Zhao, Lynne Abruzzo, Arletta Lozanski, Melanie Davis, Amber Gordon, Lisa L. Smith, Rose Mantel, Jeffrey A. Jones, Joseph M. Flynn, Samantha M. Jaglowski, Leslie A. Andritsos, Farrukh Awan, Kristie A. Blum, Michael R. Grever, Amy J. Johnson, John C. Byrd, Jennifer A. Woyach. Etiology of Ibrutinib Therapy Discontinuation and Outcomes in Patients With Chronic Lymphocytic Leukemia. JAMA Oncology, 2015;

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    2015-03-06 minlingfeng
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    2015-03-03 hbwang006

    分子水平

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