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  • 1.

    【2hr】The NOTCH signaling pathway: role in the pathogenesis of T-cell acute lymphoblastic leukemia and implication for therapy

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    机译 NOTCH信号通路：在T细胞急性淋巴细胞白血病的发病机理中的作用及其治疗意义
    摘要：T-cell acute lymphoblastic leukemia/lymphoma (T-ALL) is characterized by aberrant activation of NOTCH1 in over 60% of T-ALL cases. The high prevalence of activating NOTCH1 mutations highlights the critical role of NOTCH signaling in the pathogenesis of this disease and has prompted the development of therapeutic approaches targeting the NOTCH signaling pathway. Small molecule gamma secretase inhibitors (GSIs) can effectively inhibit oncogenic NOTCH1 and are in clinical testing for the treatment of T-ALL. Treatment with GSIs and glucocorticoids are strongly synergistic and may overcome the gastrointestinal toxicity associated with systemic inhibition of the NOTCH pathway. In addition, emerging new anti-NOTCH1 therapies include selective inhibition of NOTCH1 with anti-NOTCH1 antibodies and stapled peptides targeting the NOTCH transcriptional complex in the nucleus.
  • 2.

    【2hr】Editorial

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    机译 社论
    • 作者：Jason Gotlib
    • 刊名：Therapeutic Advances in Hematology
    • 2013年第4期
    摘要：
  • 3.

    【2hr】Pomalidomide and its clinical potential for relapsed or refractory multiple myeloma: an update for the hematologist

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    机译 Pomalidomide及其在复发或难治性多发性骨髓瘤中的临床潜力：血液科医生的最新进展
    摘要：Multiple myeloma is a common plasma cell neoplasm that is incurable with conventional therapy. The treatment paradigm of multiple myeloma is not standardized and is evolving. The advent of novel drugs, including the proteasome inhibitor bortezomib and the immunomodulatory agents, has resulted in increased median survival. Unfortunately, all patients eventually relapse and require further therapy. Pomalidomide is the newest immunomodulatory drug, created by chemical modification of thalidomide with the intention of increasing therapeutic activity while limiting toxicity. Its mechanism of action is incompletely understood but involves anti-angiogenic effects, immunomodulation, an effect on the myeloma tumor microenvironment, and the protein cereblon. It is more potent than thalidomide and lenalidomide. In phase II studies, it has shown significant activity in patients with relapsed and refractory multiple myeloma, including patients who are heavily pretreated, have disease refractory to lenalidomide and bortezomib, and those with high-risk cytogenetic or molecular markers. It is generally well tolerated, with adverse effects including fatigue, neutropenia, neuropathy, and thromboembolic disease. Pomalidomide is a promising new agent in the expanding arsenal of antimyeloma drugs. In this review, we discuss the clinical experience to date with pomalidomide in multiple myeloma.
  • 4.

    【2hr】Inherited predisposition to myeloproliferative neoplasms

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    机译 骨髓增生性肿瘤的遗传易感性
    摘要：Myeloproliferative neoplasms (MPNs) are haematological disorders characterized by an overproduction of mature myeloid cells with a tendency to transform to acute myeloid leukaemia. Clonal proliferation of myeloid progenitor cells is driven by somatically acquired mutations, most notably JAK2 V617F, but there are important features relating to pathogenesis and phenotypic diversity that cannot be explained by acquired mutations alone. In this review we consider what is currently known about the role that inherited factors play in the development and biology of both sporadic and familial forms of MPN. Although most MPN cases appear to be sporadic, familial predisposition has been recognized for many years in a subset of cases and epidemiological studies have indicated the presence of common susceptibility alleles. Currently the JAK2 46/1 haplotype (also referred to as ‘GGCC’) is the strongest known predisposition factor for sporadic MPNs carrying a JAK2 V617F mutation, explaining a large proportion of the heritability of this disorder. Less is known about what genetic variants predispose to MPNs that lack JAK2 V617F, but there have been recent reports of interesting associations in biologically plausible candidates, and more loci are set to emerge with the application of systematic genome-wide association methodologies. Several highly penetrant predisposition variants that affect erythropoietin signalling, thrombopoietin signalling or oxygen sensing have been characterized in families with nonclonal hereditary erythrocytosis or thrombocytosis, but much less is known about familial predisposition to true clonal MPN. The heterogeneous pattern of inheritance and presumed genetic heterogeneity in these families makes analysis difficult, but whole exome or genome sequencing should provide novel insights into these elusive disorders.
  • 5.

    【2hr】Voriconazole and its clinical potential in the prophylaxis of systemic fungal infection in patients with hematologic malignancies: a perspective review

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    机译 伏立康唑及其在预防血液系统恶性肿瘤系统性真菌感染中的临床潜力
    摘要：Invasive fungal infections (IFIs) have become high prevalence in patients with hematologic malignancies. Drug-based strategies for IFIs include various approaches such as prophylactic, empiric, preemptive, and directed treatment. Prophylaxis is an attractive strategy in high-risk patients, given the lack of reliable diagnostics and the high mortality rate associated with IFIs. Prophylaxis includes the use of antifungal drugs in all patients at risk. An ideal antifungal compound for prophylaxis should have a potent and broad activity, be available both orally and intravenously, and have a low toxicity profile. Voriconazole fulfills all these criteria. The clinical efficacy of voriconazole against the majority of fungal pathogens makes it potentially very useful for the prevention of IFIs in patients with hematologic malignancies. Voriconazole appears to be very effective for the primary and secondary prevention of IFIs in these patients and recipients of allogeneic hematopoietic stem-cell transplantation. Randomized controlled trials evaluating voriconazole as primary antifungal prophylaxis in patients with neutropenia treated for a variety of hematologic malignancies have been performed, confirming its value as a prophylactic agent. Voriconazole is generally safe and well tolerated; however, its use is also associated with a number of concerns. In most patients with hematologic malignancies there is the potential for pharmacokinetic drug–drug interactions given that voriconazole is metabolized through the P450 cytochrome system.
  • 6.

    【2hr】Recognizing familial myeloid leukemia in adults

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    机译 认识成人家族性粒细胞白血病
    摘要：Germline testing for familial cases of myeloid leukemia in adults is becoming more common with the recognition of multiple genetic syndromes predisposing people to bone marrow disease. Currently, Clinical Laboratory Improvement Amendments approved testing exists for several myeloid leukemia predisposition syndromes: familial platelet disorder with propensity to acute myeloid leukemia (FPD/AML), caused by mutations in RUNX1; familial AML with mutated CEBPA; familial myelodysplastic syndrome and acute leukemia with mutated GATA2; and the inherited bone marrow failure syndromes, including dyskeratosis congenita, a disease of abnormal telomere maintenance. With the recognition of additional families with a genetic component to their leukemia, new predisposition alleles will likely be identified. We highlight how to recognize and manage these cases as well as outline the characteristics of the major known syndromes. We look forward to future research increasing our understanding of the scope of inherited myeloid leukemia syndromes.
  • 7.

    【2hr】Genetic predispositions to childhood leukemia

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    机译 儿童白血病的遗传易感性
    摘要：While the majority of leukemia cases occur in the absence of any known predisposing factor, there are germline mutations that significantly increase the risk of developing hematopoietic malignancies in childhood. In this review article, we describe a number of these mutations and their clinical features. These predispositions can be broadly classified as those leading to bone marrow failure, those involving tumor suppressor genes, DNA repair defects, immunodeficiencies or other congenital syndromes associated with transient myeloid disorders. While leukemia can develop as a secondary event in the aforementioned syndromes, there are also several syndromes that specifically lead to the development of leukemia as their primary phenotype. Many of the genes discussed in this review can also be somatically mutated in other cancers, highlighting the importance of understanding shared alterations and mechanisms underpinning syndromic and sporadic leukemia.
  • 8.

    【2hr】Inherited predisposition to multiple myeloma

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    机译 遗传性多发性骨髓瘤的易感性
    摘要：Multiple myeloma (MM) is the second most common hematologic malignancy in the United States, after non-Hodgkin lymphoma. Family pedigree analyses of high-risk families, case-control studies and racial disparities in disease incidence all point to a potential inherited predisposition to MM. Genome-wide association studies (GWASs) have identified susceptibility loci in a number of cancers and such studies are currently underway in MM. To date, GWASs in MM have identified several potential regions of interest for further study on chromosomes 3p22, 7p15.3, 8q24 and 2p23.3. In addition, several targets of paraproteins (so called ‘paratargs’) in MM have been identified. Hyperphosphorylation of the paratarg protein, which is inherited in an autosomal dominant manner, appears a common mechanism underlying the antigenicity of these proteins. One particular protein, hyperphosphorylated paratarg-7 (pP-7) is a common target in persons with myeloma and has also been identified in affected members of several high-risk MM families. It appears that the frequency of pP-7 as an antigenic target may be particularly high in African American patients with MM, which could be part of the explanation for observed racial disparities in the incidence of MM. In this review we focus on available data in the area of inherited predisposition to MM, and highlight future research directions.
  • 9.

    【2hr】Inherited susceptibility to chronic lymphocytic leukemia: evidence and prospects for the future

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    机译 对慢性淋巴细胞性白血病的遗传易感性：未来的证据和前景
    • 作者：Jennifer R. Brown
    • 刊名：Therapeutic Advances in Hematology
    • 2013年第4期
    摘要：Chronic lymphocytic leukemia (CLL) is the most common leukemia in the United States and one of the most heritable cancers. A family history of the disease is perhaps the best defined risk factor, and approximately 15–20% of CLL patients have a family member with CLL or a related lymphoproliferative disorder. Much effort has been devoted to trying to elucidate the mechanisms underlying this genetic risk. Familial CLL appears to be clinically and biologically similar to sporadic CLL, and most if not all CLL appears to be preceded by monoclonal B-cell lymphocytosis (MBL), which does appear to occur at higher frequency in relatives in families with CLL. Neither linkage studies nor candidate gene association studies have proven particularly informative in CLL, but genomewide association studies have identified multiple low-risk variants that together explain about 16% of the familial risk of CLL. Studies of individual families have identified higher-risk single nucleotide polymorphisms or copy number variants associated with disease risk in those families. Current efforts to identify additional risk loci are focused on applying next-generation sequencing to the germline of informative CLL families as well as individuals with sporadic CLL.
  • 10.

    【2hr】Editorial

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    机译 社论
    • 作者：Michael J. Mauro
    • 刊名：Therapeutic Advances in Hematology
    • 2013年第1期
    摘要：
  • 11.

    【2hr】Clofarabine in the treatment of acute myeloid leukemia in older adults

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    机译 氯法拉滨治疗老年人急性髓细胞性白血病
    摘要：Objective:To review the literature evaluating the efficacy and tolerability of clofarabine as a single agent and in combination therapy for older patients with acute myeloid leukemia (AML).
  • 12.

    【2hr】Comprehensive review of JAK inhibitors in myeloproliferative neoplasms

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    机译 JAK抑制剂在骨髓增生性肿瘤中的综述。
    摘要：Myeloproliferative neoplasms (MPNs) are clonal hematopoietic stem-cell disorders, characterized phenotypically by the abnormal accumulation of mature-appearing myeloid cells. Polycythemia vera, essential thrombocythemia, primary myelofibrosis (also known as ‘BCR-ABL1-negative’ MPNs), and chronic myeloid leukemia (CML) are the primary types of MPNs. After the discovery of the BCR-ABL1 fusion protein in CML, several oncogenic tyrosine kinases have been identified in ‘BCR-ABL1-negative’ MPNs, most importantly, JAK2V617F mutation. The similarity in the clinical characteristics of the BCR-ABL1-negative MPN patients along with the prevalence of the Janus kinase mutation in this patient population provided a strong rationale for the development of a new class of pharmacologic inhibitors that target this pathway. The first of its class, ruxolitinib, has now been approved by the food and drug administration (FDA) for the management of patients with intermediate- to high-risk myelofibrosis. Ruxolitinib provides significant and sustained improvements in spleen related and constitutional symptoms secondary to the disease. Although noncurative, ruxolitinib represents a milestone in the treatment of myelofibrosis patients. Other types of JAK2 inhibitors are being tested in various clinical trials at this point and may provide better efficacy data and safety profile than its predecessor. In this article, we comprehensively reviewed and summarized the available preclinical and clinical trials pertaining to JAK inhibitors.
  • 13.

    【2hr】Serum free light-chain assay for the detection and monitoring of multiple myeloma and related conditions

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    机译 无血清轻链测定法可检测和监测多发性骨髓瘤及相关疾病
    摘要：Diagnosis and monitoring of multiple myeloma (MM) and related conditions are usually carried out by means of serum and urine protein electrophoresis and immunofixation. In the early 2000s, an assay aimed at evaluating serum free light chains (sFLCs) was made available and subsequently tested in different plasma cell disorders. Several reports have demonstrated the usefulness of the assay for the diagnosis and monitoring of oligosecretory MM, nonsecretory MM, Bence Jones MM, and amyloid light-chain amyloidosis. Furthermore, a prognostic role for an abnormal sFLC κ/λ ratio has been observed in the case of monoclonal gammopathy of unknown significance, smoldering MM, solitary plasmacytomas, and in newly diagnosed symptomatic MM secreting intact monoclonal immunoglobulins. In conclusion, according to present data, the sFLC assay can be considered reliable for the diagnosis, monitoring, and prognosis of different plasma cell disorders, and recently studies have been carried out to test a possible role of an sFLC evaluation in other B-cell lymphoproliferative malignancies.
  • 14.

    【2hr】Using biologic predictive factors to direct therapy of diffuse large B-cell lymphoma

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    机译 利用生物学预测因素直接治疗弥漫性大B细胞淋巴瘤
    摘要：While diffuse large B-cell lymphoma (DLBCL) was once considered to be a single disease entity, recent biological insights have demonstrated that it can be divided up into at least three molecular subtypes. Gene expression profiling has revealed that DLBCL consists of a germinal center B-cell like subtype (GCB), an activated B-cell like subtype (ABC) and a primary mediastinal B-cell lymphoma subtype (PMBL). These three entities arise from different stages of B-cell differentiation and are characterized by distinct mechanisms of oncogenic activation. In GCB DLBCL, the BCL6 transcription factor may play an important role in tumor survival and treatment resistance and strategies that target this are under investigation. ABC DLBCL is characterized by high expression of target genes of the nuclear factor kappa B (NF-κB)/Rel family of transcription factors and strategies that target NF-κB are in clinical trials. PMBL is a distinct clinicopathologic entity that shares many molecular features with nodular sclerosis Hodgkin lymphoma (HL) and may benefit from dose intensity approaches and inhibition of the Janus kinases. Other biologic predictive factors such as MYC and BCL2 may be overexpressed in both the GCB and ABC subtypes and strategies that target these complexes are also being tested.
  • 15.

    【2hr】Factor VIII inhibitors in hemophilia A: rationale and latest evidence

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    机译 血友病A因子VIII抑制剂：基本原理和最新证据
    摘要：Factor VIII (FVIII) replacement therapy is the foundation of treatment in hemophilia A and is effective unless a patient develops an alloantibody (inhibitor) against exogenous FVIII. Inhibitor development is currently the most significant treatment complication seen in patients with hemophilia and is associated with considerable morbidity and a decreased quality of life. The development of an inhibitor is the result of a complex interaction between a patient’s immune system and genetic and environmental risk factors. The mainstay of treatment is the eradication of the inhibitor through immune tolerance. This review summarizes the current evidence regarding inhibitor risk factors, eradication, and hemostatic bypassing agents.
  • 16.

    【2hr】Editorial

    包量

    机译 社论
    • 作者：Michael J. Mauro
    • 刊名：Therapeutic Advances in Hematology
    • 2013年第2期
    摘要：
  • 17.

    【2hr】Epigenetic therapy of hematological malignancies: where are we now?

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    机译 血液恶性肿瘤的表观遗传学治疗：我们现在在哪里？
    摘要：A growing amount of evidence points towards alterations in epigenetic machinery as a leading cause in disease initiation and progression. Like genetic alterations, misregulation of the epigenetic regulators can lead to abnormal gene expression. However, unlike genetic events, the epigenetic machinery may be targeted pharmacologically, potentially resulting in the reversal of a particular epigenetic state. The success of DNA methyltransferase and histone deacetylase inhibitors represents a proof of concept for the use of therapies intended to target the epigenome in the treatment of hematological malignancies. Nevertheless, the molecular mechanisms underlying the efficacy of these agents have not been completely elucidated. Recently, a large number of studies sequencing cancer cell genomes identified recurring mutations of epigenetic regulators, providing new insights into the molecular underpinnings of cancer. Consequently, the efforts to identify specific epigenetic inhibitors have been expanded in order to target particular subsets of patients. This review will summarize the progress made using the currently available epigenetic therapies and discuss some of the more recently identified targets whose inhibition may present potential avenues for the treatment of hematologic malignancies.
  • 18.

    【2hr】Safety and efficacy of deferasirox in the management of transfusion-dependent patients with myelodysplastic syndrome and aplastic anaemia: a perspective review

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    机译 Deferasirox在输血依赖性骨髓增生异常综合症和再生障碍性贫血患者中的安全性和有效性：观点回顾
    摘要：Deferasirox is an orally administered, once-daily iron chelator with a generally good safety and efficacy profile. Reported adverse events in the older myelodysplastic population are somewhat different to the more intensively investigated and younger thalassaemic population. Renal impairment is the most concerning adverse event, but this is reversible if identified and the drug is withdrawn early. Gastrointestinal effects, particularly diarrhoea, can be troublesome for older patients, but can be minimized with tailored therapy. Negative iron balance can be achieved in most patients with a median dose of 20 mg/kg/day, and doses up to 40 mg/kg are possible in patients with severe iron overload, who are at risk of cardiac decompensation.
  • 19.

    【2hr】Management of imatinib-resistant patients with chronic myeloid leukemia

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    机译 伊马替尼耐药的慢性粒细胞白血病患者的治疗
    摘要：Since its approval in 2001 for frontline management of chronic myelogenous leukemia (CML), imatinib has proven to be very effective in achieving high remission rates and improving prognosis. However, up to 33% of patients will not achieve optimal response. This has led researchers to develop new second- and third-generation tyrosine kinase inhibitors. In this article, we review the mechanisms of resistance, recommendations for monitoring, assessment of milestones, and management options for patients with CML who are resistant to imatinib therapy. We further explain the potential pitfalls that can lead to unnecessary discontinuation, the prognosis of patients whose condition fails to respond to treatment, and the upcoming therapies.
  • 20.

    【2hr】The pathobiology of the oncogenic tyrosine kinase NPM-ALK: a brief update

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    机译 致癌酪氨酸激酶NPM-ALK的病理生物学：简要更新
    摘要：Extensive research has been carried out in the past two decades to study the pathobiology of nucleophosmin-anaplastic lymphoma kinase (NPM-ALK), which is an oncogenic fusion protein found exclusively in a specific type of T-cell lymphoid malignancy, namely ALK-positive anaplastic large cell lymphoma. Results from these studies have provided highly useful insights into the mechanisms by which a constitutively tyrosine kinase, such as NPM-ALK, promotes tumorigenesis. Several previous publications have comprehensively summarized the advances in this field. In this review, we provide readers with a brief update on specific areas of NPM-ALK pathobiology. In the first part, the NPM-ALK/signal transducer and activator of transcription 3 (STAT3) signaling axis is discussed, with an emphasis on the existence of multiple biochemical defects that have been shown to amplify the oncogenic effects of this signaling axis. Specifically, findings regarding JAK3, SHP1 and the stimulatory effects of several cytokines including interleukin (IL)-9, IL-21 and IL-22 are summarized. New concepts stemming from recent observations regarding the functional interactions among the NPM-ALK/STAT3 axis, β catenin and glycogen synthase kinase 3β will be postulated. Lastly, new mechanisms by which the NPM-ALK/STAT3 axis promotes tumorigenesis, such as its modulations of Twist1, hypoxia-induced factor 1α, CD274, will be described. In the second part, we summarize recent data generated by mass spectrometry studies of NPM-ALK, and use MSH2 and heat shock proteins as examples to illustrate the use of mass spectrometry data in stimulating new research in this field. In the third part, the evolving field of microRNA in the context of NPM-ALK biology is discussed.
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