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Overcoming Immunodeficiency in Chronic Lymphocytic Leukaemia: Current Knowledge and Perspectives 克服慢性淋巴细胞白血病的免疫缺陷:当前的知识和观点
Pub Date : 2014-07-31 DOI: 10.33590/emjhematol/10314061
F. McClanahan, J. Gribben
While the standard of care for chronic lymphocytic leukaemia (CLL) leads to high overall response rates and a long progression-free survival, it can be highly toxic for many patients, particularly in the elderly who often present concurrent diseases with associated morbidities. Treatment-related immune system burden and complications are challenging as most CLL patients already show immunodeficiency and are at high risk of infection. The latter are the main cause for increased morbidity and mortality and are correlated with disease severity and type of therapy. In the last few years, many new approaches and innovative agents such as second-generation anti-CD20 monoclonal antibodies, lenalidomide, B cell receptor signalling inhibitors, and novel cellular therapies have advanced the outlook for CLL management. Indeed, novel therapies could soon be addressing the need to promote immune reactivation and re-sensitise the immune system. By doing so, they could reach two main objectives, namely lowering the high proportion of patients at risk of infection, and acting as effective tools for the immune system to overcome its defects and fight malignant cells.
虽然慢性淋巴细胞白血病(CLL)的标准治疗导致高总体缓解率和较长的无进展生存期,但对许多患者,特别是经常伴有相关疾病的老年人,可能具有高毒性。治疗相关的免疫系统负担和并发症是具有挑战性的,因为大多数CLL患者已经表现出免疫缺陷,并且感染的风险很高。后者是发病率和死亡率增加的主要原因,并与疾病严重程度和治疗类型相关。在过去的几年里,许多新的方法和创新的药物,如第二代抗cd20单克隆抗体、来那度胺、B细胞受体信号抑制剂和新的细胞疗法,都提高了CLL治疗的前景。事实上,新的治疗方法可能很快就能解决促进免疫再激活和免疫系统再敏感的需求。通过这样做,他们可以达到两个主要目标,即降低患者感染风险的高比例,并作为免疫系统克服其缺陷和对抗恶性细胞的有效工具。
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引用次数: 0
The Role of CD49d in Chronic Lymphocytic Leukaemia: Microenvironmental Interactions and Clinical Relevance CD49d在慢性淋巴细胞白血病中的作用:微环境相互作用和临床相关性
Pub Date : 2014-07-31 DOI: 10.33590/emjhematol/10312094
M. Dal Bo, E. Tissino, D. Benedetti, Chiara Caldana, R. Bomben, G. del Poeta, G. Gaidano, F. Rossi, A. Zucchetto, V. Gattei
Chronic lymphocytic leukaemia (CLL) is a clinically heterogeneous disease characterised by the accumulation/expansion of a clonal population of neoplastic cells with the morphological appearance of small mature B lymphocytes in blood, bone marrow, and lymphoid organs. Stimulation through the B cell receptor (BCR) plays a prominent role in the selection and expansion of the malignant clone in CLL. On the other hand, other external signals delivered by several cell types including T lymphocytes, macrophages, stromal cells, endothelial cells, and follicular dendritic cells, operating through either direct BCR-independent cell-cell contact or indirect production of paracrine soluble factors, synergistically cooperate in regulating proliferation and survival of CLL cells. In this context, CD49d is known to play a pivotal role in mediating both cell-cell and cell-matrix interactions in CLL-involved tissues, eventually delivering pro-survival signals and protecting CLL cells from drug-induced damages. In the present review, we focused on functional and physical interactions of CD49d with other microenvironmental receptors, including CD38 and BCR, and other specific CD49d-dependent interactions in lymph node and bone marrow microenvironments responsible for growth and survival-supporting signals, eventually influencing CLL prognosis and therapeutic options.
慢性淋巴细胞白血病(CLL)是一种临床异质性疾病,其特征是肿瘤细胞克隆群的积累/扩增,在血液、骨髓和淋巴器官中具有小成熟B淋巴细胞的形态外观。通过B细胞受体(BCR)的刺激在CLL恶性克隆的选择和扩增中起着突出的作用。另一方面,包括T淋巴细胞、巨噬细胞、基质细胞、内皮细胞和滤泡树突状细胞在内的几种细胞类型所传递的其他外部信号,或通过bcr非依赖性细胞间的直接接触,或间接产生旁分泌可溶性因子,协同合作调节CLL细胞的增殖和存活。在这种情况下,CD49d已知在介导CLL相关组织中的细胞-细胞和细胞-基质相互作用中发挥关键作用,最终传递促生存信号并保护CLL细胞免受药物诱导的损伤。在本综述中,我们重点关注CD49d与其他微环境受体(包括CD38和BCR)的功能和物理相互作用,以及淋巴结和骨髓微环境中其他特异性CD49d依赖的相互作用,这些相互作用负责生长和生存支持信号,最终影响CLL预后和治疗选择。
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引用次数: 1
Autologous Stem Cell Transplantation In Multiple Myeloma: Is It Still The Right Choice? 自体干细胞移植治疗多发性骨髓瘤:仍然是正确的选择吗?
Pub Date : 2014-07-31 DOI: 10.33590/emjhematol/10311182
P. Tosi
Autologous stem cell transplantation (ASCT) is considered the standard of care for multiple myeloma patients aged <65 years with no relevant comorbidities. The addition of proteasome inhibitors and/or immunomodulatory drugs has significantly increased the percentage of patients achieving a complete remission after induction therapy, and these results are maintained after high-dose melphalan (Alkeran®), leading to a prolonged disease control. Studies are being carried out in order to evaluate whether short- term consolidation or long-term maintenance therapy can result in disease eradication at the molecular level, thus also increasing patient survival. The efficacy of these new drugs has raised the issue of deferring the transplant after achieving a second response upon relapse. Another controversial point is the optimal treatment strategy for high-risk patients, that do not benefit from ASCT, and for whom the efficacy of new drugs is still matter of debate.
自体干细胞移植(ASCT)被认为是65岁以下无相关合并症的多发性骨髓瘤患者的标准治疗方法。添加蛋白酶体抑制剂和/或免疫调节药物显著增加了诱导治疗后患者完全缓解的百分比,并且这些结果在大剂量melphalan (Alkeran®)后保持不变,从而延长了疾病控制。目前正在进行研究,以评估短期巩固或长期维持治疗是否能在分子水平上根除疾病,从而提高患者的生存率。这些新药的疗效提出了在复发后获得第二次反应后推迟移植的问题。另一个有争议的问题是高风险患者的最佳治疗策略,这些患者不能从ASCT中获益,对他们来说,新药的疗效仍然是一个有争议的问题。
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引用次数: 1
Current Developments and Perspectives in Multiple Myeloma 多发性骨髓瘤的最新进展和展望
Pub Date : 2014-07-31 DOI: 10.33590/emjhematol/10311247
M. Delforge, S. Knop, M. Mohty
In the last decades, advances in the therapeutic management of multiple myeloma (MM) with new drug armamentarium and strategies have significantly improved the outcome and survival of newly diagnosed and relapsed patients. However, the continuing challenges physicians are facing within specific clinical settings and patient subpopulations, whose prognosis with current strategies is extremely poor, call for a paradigm change. New immunomodulators, proteasome inhibitors, histone deacetylase inhibitors, and monoclonal antibodies are being explored to improve first-line outcomes so that a smaller proportion of patients relapse early or fail to respond to induction treatment. Moreover, recent advances and clinical evidence with novel therapies seem to provide patients with relapsed or refractory MM additional survival benefits. Improving clinical outcomes and refining standard of care should help clinicians reduce the burden of multiple and toxic therapy; quality of life (QoL) should be at the core of MM management. Patient selection and stratification needs to be reinforced with the help of comprehensive knowledge on conventional risk factors, and supplemented by molecular pathways in the near future in order to provide tailored options and strategies to patients, including the use of monoclonal antibodies. Numerous drugs are on the horizon and the next few years should witness marked improvements in survival, QoL, and safety of MM management.
在过去的几十年里,在多发性骨髓瘤(MM)的治疗管理方面,新的药物装备和策略的进展显著改善了新诊断和复发患者的预后和生存。然而,在特定的临床环境和患者亚群中,医生面临着持续的挑战,他们的预后与当前的策略非常差,要求范式改变。正在探索新的免疫调节剂、蛋白酶体抑制剂、组蛋白去乙酰化酶抑制剂和单克隆抗体,以改善一线结果,从而减少早期复发或对诱导治疗无效的患者比例。此外,新疗法的最新进展和临床证据似乎为复发或难治性MM患者提供了额外的生存益处。改善临床结果和完善护理标准应有助于临床医生减轻多重治疗和毒性治疗的负担;生命质量(QoL)应成为MM管理的核心。在对常规危险因素的全面了解的帮助下,需要加强患者的选择和分层,并在不久的将来辅以分子途径,以便为患者提供量身定制的选择和策略,包括使用单克隆抗体。许多药物即将问世,未来几年将见证MM治疗在生存、生活质量和安全性方面的显著改善。
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引用次数: 0
Calreticulin in Myeloproliferative Neoplasms: The Other Side of the Alice Mirror 钙网蛋白在骨髓增生性肿瘤中的作用:爱丽丝镜的另一面
Pub Date : 2014-07-31 DOI: 10.33590/emjhematol/10313345
L. Varricchio, A. Migliaccio
Calreticulin (CALR), a Ca2+ binding protein mostly localised in the endoplasmic reticulum, regulates Ca2+ homeostasis, chaperones, and other proteins to the nucleus and other cellular compartments. CALR has been implicated in several cellular processes including: signalling, regulation of gene expression, cell adhesion, apoptosis, autoimmunity, and, when expressed on the cell surface, induction of phagocytosis by macrophages. Reports indicating over-expression of CALR in cancer cells suggest that modulation of CALR expression may be exploited to increase their clearance by the immune system. In the hematopoietic system, CALR has been implicated in the activation of the stress pathway as an obligatory partner of the glucocorticoid receptor. More recently, somatic loss-of-function mutations in the CALR gene were discovered in a significant proportion of patients with Philadelphia-negative myeloproliferative neoplasms (MPN) who did not harbour gain-of-function mutations in Janus kinase 2 (JAK2), the first signalling element of cytokine receptors, and myeloproliferative leukaemia virus oncogene (MPL), the thrombopoietin receptor, usually associated with these diseases. This review will summarise current knowledge on the biological activity of CALR and MPL/JAK2 in hematopoiesis, delineate a unifying pathway for the pathogenesis of MPN, and discuss how this pathway may be exploited for therapy.
钙网蛋白(CALR)是一种Ca2+结合蛋白,主要定位于内质网,调节Ca2+稳态、伴侣蛋白和其他蛋白到细胞核和其他细胞室。CALR参与多种细胞过程,包括:信号传导、基因表达调节、细胞粘附、细胞凋亡、自身免疫,以及当在细胞表面表达时,诱导巨噬细胞吞噬。CALR在癌细胞中过度表达的报道表明,CALR表达的调节可能被利用来增加免疫系统对CALR的清除。在造血系统中,CALR作为糖皮质激素受体的强制性伙伴参与应激途径的激活。最近,在很大比例的费城阴性骨髓增殖性肿瘤(MPN)患者中发现了CALR基因的体细胞功能丧失突变,这些患者的Janus激酶2 (JAK2)(细胞因子受体的第一个信号元件)和骨髓增殖性白血病病毒癌基因(MPL)(血小板生成素受体)的功能获得突变通常与这些疾病相关。本文将总结目前关于CALR和MPL/JAK2在造血中的生物活性的知识,描绘MPN发病机制的统一途径,并讨论如何利用这一途径进行治疗。
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引用次数: 2
The Role of JAK2 Mutation in Thrombotic Complications of Chronic Myeloproliferative Neoplasms JAK2突变在慢性骨髓增殖性肿瘤血栓并发症中的作用
Pub Date : 2014-07-31 DOI: 10.33590/emjhematol/10311605
V. Popov, M. Onisâi, A. Vlădăreanu
Patients diagnosed with myeloproliferative neoplasms (MPNs) often develop thrombotic events as an onset of symptoms or in evolution. The pathogenesis of thrombosis in patients with MPN is multifactorial. There are multiple prognostic score systems, but the presence of JAK2V617F (JAK2) mutation is an independent and strong thrombosis risk factor. Patients with MPN and JAK mutational status usually associate thrombocytosis, increased immature circulating platelets, and leukocytosis, with increased expression of CD62P and CD14, increased levels of circulating microparticles and leuko-platelet microaggregates, and altered endothelial function. This review aims to discuss different factors contributing to the increased thrombotic risk in association with JAK2 mutational status. Also, recent reports incriminate this mutation to have a possible role in spontaneous loss of pregnancy.
诊断为骨髓增殖性肿瘤(mpn)的患者通常在发病或发展过程中出现血栓形成事件。MPN患者血栓形成的发病机制是多因素的。有多种预后评分系统,但JAK2V617F (JAK2)突变的存在是一个独立的、强烈的血栓形成危险因素。MPN和JAK突变状态的患者通常伴有血小板增多、未成熟循环血小板增多、白细胞增多、CD62P和CD14表达增加、循环微粒和白细胞-血小板微聚集体水平增加以及内皮功能改变。本综述旨在讨论与JAK2突变状态相关的导致血栓形成风险增加的不同因素。此外,最近的报道表明这种突变可能在自发性流产中起作用。
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引用次数: 3
Next Steps in Front-Line Treatment of Lymphoma: The Road Ahead 淋巴瘤一线治疗的下一步:前进的道路
Pub Date : 2014-07-31 DOI: 10.33590/emjhematol/10313844
J. Bell
Prof Zelenetz opened the symposium on the evolving front-line treatment options for follicular lymphoma (FL) and discussed the potential of novel agents to replace chemotherapy. Prof Zelenetz presented the heterogeneity of diffuse large B cell non-Hodgkin’s lymphoma (DLBCL) with regard to the diagnosis and subtypes of DLBCL to describe the specificity of new agents towards certain DLBCL subgroups, whilst Prof Dreyling spoke about the current diagnosis and treatment pathways for mantle cell lymphoma (MCL), and briefly described recent trial results. The final presenter, Prof Coiffier, discussed the lack of efficacy of front-line chemotherapy regimens for peripheral T cell lymphoma (PTCL), and highlighted potential new treatments based upon CHOP (cyclophosphamide, hydroxydaunorubicin, vincristine, prednisone). He then addressed the use of transplantation for first-line and refractory disease, and called for research to optimise therapy using existing agents.
Zelenetz教授在研讨会上以滤泡性淋巴瘤(FL)的前沿治疗方案为开场,并讨论了替代化疗的新药物的潜力。Zelenetz教授介绍了弥漫性大B细胞非霍奇金淋巴瘤(DLBCL)在诊断和亚型方面的异质性,以描述新药物对某些DLBCL亚组的特异性,而Dreyling教授则谈到了套细胞淋巴瘤(MCL)的当前诊断和治疗途径,并简要描述了最近的试验结果。最后一位主讲人Coiffier教授讨论了外周T细胞淋巴瘤(PTCL)一线化疗方案缺乏疗效,并强调了基于CHOP(环磷酰胺、羟基柔红霉素、长春新碱、强的松)的潜在新疗法。然后,他谈到了移植在一线和难治性疾病中的应用,并呼吁研究利用现有药物优化治疗。
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引用次数: 0
The Multiple Facets of Thrombotic Microangiopathies 血栓性微血管病变的多个方面
Pub Date : 2014-07-31 DOI: 10.33590/emjhematol/10310448
Saroshi Amirthalingam
The Alexion satellite symposium was introduced by Prof Pier Mannuccio Mannucci who provided an introduction to the history of thrombotic microangiopathies (TMAs). Prof Paul Coppo gave an overview of TMAs and the differential diagnosis of atypical hemolytic-uraemic syndrome (aHUS) and thrombotic thrombocytopaenic purpura (TTP). He emphasised the importance of a suitable differential diagnosis in order to initiate an appropriate treatment as soon as possible, eventually allowing better patient outcomes. Prof Javier de la Rubia discussed the role of the complement pathway and how genetic abnormalities can lead to dysregulation in aHUS. Prof Thorsten Feldkamp concluded by giving an overview of the latest clinical trial data on the efficacy and safety of eculizumab in the management of aHUS.
Alexion卫星研讨会由Pier Mannuccio Mannucci教授介绍,他介绍了血栓性微血管病变(TMAs)的历史。Paul Coppo教授概述了TMAs和非典型溶血性尿毒综合征(aHUS)和血栓性血小板减少性紫癜(TTP)的鉴别诊断。他强调了适当的鉴别诊断的重要性,以便尽快开始适当的治疗,最终使患者获得更好的结果。Javier de la Rubia教授讨论了补体途径的作用以及遗传异常如何导致aHUS的失调。Thorsten Feldkamp教授总结了eculizumab在aHUS治疗中的有效性和安全性的最新临床试验数据。
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引用次数: 0
The Standard of Care in Relapsed Refractory CD30+ Lymphoma 复发难治性CD30+淋巴瘤的护理标准
Pub Date : 2014-07-31 DOI: 10.33590/emjhematol/10314573
M. Hutchings
CD30-positive (CD30+) lymphomas are a heterogeneous group of hematological malignancies that share the same antigen. Over recent decades, advances in therapeutic management of these diseases have considerably improved clinical outcomes. Overall, the two main CD30+ lymphomas – Hodgkin’s lymphoma and systemic anaplastic large cell lymphoma – are associated with a favourable prognosis after first-line therapy. Nevertheless, optimal therapeutic strategies are needed to manage relapsed or refractory CD30+ lymphomas. The introduction of novel targeted approaches, such as brentuximab vedotin (BV), expands the therapeutic armamentarium and provides new perspectives in terms of clinical efficacy despite heavily pretreated disease, with reasonable toxicity to patients whose quality of life is often impaired by the disease and repeated treatments. The standard of care (SoC) for these malignancies is being refined and will be clarified with results from ongoing and upcoming Phase II/III clinical trials. Clinical studies are currently assessing the use of BV in a broad range of CD30+ lymphomas. Over time, frontline strategies and SoC will be refined in order to improve outcomes for patients with relapsed disease, while allowing clinicians to expand patient selection and provide long-term remission in a wide variety of clinical settings.
CD30阳性(CD30+)淋巴瘤是一种异质性的血液系统恶性肿瘤,具有相同的抗原。近几十年来,这些疾病的治疗管理取得了进展,大大改善了临床结果。总的来说,两种主要的CD30阳性淋巴瘤-霍奇金淋巴瘤和全身性间变性大细胞淋巴瘤-在一线治疗后预后良好。然而,需要最佳的治疗策略来治疗复发或难治性CD30+淋巴瘤。引入新的靶向治疗方法,如brentuximab vedotin (BV),扩大了治疗手段,并在临床疗效方面提供了新的视角,尽管疾病进行了大量的预先治疗,但对生活质量经常因疾病和重复治疗而受损的患者具有合理的毒性。这些恶性肿瘤的护理标准(SoC)正在完善,并将随着正在进行和即将进行的II/III期临床试验的结果而明确。临床研究目前正在评估BV在多种CD30阳性淋巴瘤中的应用。随着时间的推移,一线策略和SoC将得到完善,以改善复发疾病患者的预后,同时允许临床医生扩大患者选择范围,并在各种临床环境中提供长期缓解。
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引用次数: 1
Acute Liver Failure: A Dangerous and Challenging Syndrome 急性肝衰竭:一种危险和具有挑战性的综合征
Pub Date : 2014-05-27 DOI: 10.33590/emjhepatol/10310152
A. Canbay, G. Gerken
Despite progress in understanding the underlying mechanisms, acute liver failure (ALF) is still one of the major clinical challenges in hepatology. A wide variety of aetiologies, and similarly, variable courses of the disease, make it crucial to identify the cause of ALF in each individual patient. Conservative therapy is only available for some patients; for many others, liver transplantation remains the only curative option for ALF. Thus, early evaluation and prognostication of the ALF syndrome is warranted for a timely decision to list a patient for transplantation or even as high urgency. This review aims to compose our current knowledge on epidemiology, mechanisms, and prognosis in ALF, and to give a perspective for future studies in this field.
尽管在了解潜在机制方面取得了进展,但急性肝衰竭(ALF)仍然是肝病学的主要临床挑战之一。各种各样的病因,同样,疾病的变化过程,使得确定每个患者的ALF病因至关重要。保守疗法仅适用于部分患者;对于其他许多人来说,肝移植仍然是ALF的唯一治疗选择。因此,早期评估和预测ALF综合征是必要的,以便及时决定将患者列入移植名单,甚至列为高度紧急情况。本文旨在对ALF的流行病学、发病机制和预后进行综述,并对该领域未来的研究进行展望。
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引用次数: 0
期刊
EMJ Hematology
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