Academic literature on the topic 'Leucemia linfocítica - Prognóstico'
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Journal articles on the topic "Leucemia linfocítica - Prognóstico"
Vasconcelos, Yuri. "Marcadores de prognóstico na leucemia linfocítica crônica." Revista Brasileira de Hematologia e Hemoterapia 27, no. 4 (December 2005). http://dx.doi.org/10.1590/s1516-84842005000400007.
Full textBorim, Leila N. B., Milton A. Ruiz, Agnes C. F. Conte, and Beatriz Camargo. "Estado nutricional como fator prognóstico em crianças portadoras de Leucemia Linfocítica Aguda." Revista Brasileira de Hematologia e Hemoterapia 22, no. 1 (April 2000). http://dx.doi.org/10.1590/s1516-84842000000100007.
Full textDissertations / Theses on the topic "Leucemia linfocítica - Prognóstico"
Dametto, Ana Paula Fortunato. "Expressão de ZAP 70 e relação com a expressão de CD 38, ploidia e índice de fase S em pacientes com lucemia linfocítica crônica /." Botucatu :, 2014. http://hdl.handle.net/11449/108696.
Full textCoorientador: Maura Rosane Valério Ikoma
Banca: Mihoko Yamamoto
Banca: Paula de Oliveira Montandon Hokama
Resumo: A Leucemia Linfocítica Crônica (LLC) é uma neoplasia de linfócitos B maduros, de curso clínico heterogêneo, com alguns pacientes necessitando de tratamento imediato e outros vivendo sem tratamento por décadas. Por essa característica, se faz necessária a identificação de marcadores prognósticos acessíveis e de valor clínico. O objetivo principal foi avaliar retrospectivamente os indicativos prognósticos de progressão da doença (ZAP-70, CD38, ploidia de DNA e Fase S) em pacientes portadores de LLC, frente a sua evolução clínica. Como objetivos secundários, foram comparadas as metodologias de análise de ZAP-70 por citometria de fluxo(CF) ISO Método e Análise em Tubo Único, assim como as técnicas de análise de conteúdo de DNA pelo modelo matemático (ModFit LT™) e estratégia de gating boleano (Infinicyt™). Na cauística foram incluídos 27 pacientes que possuíam disponíveis os dados clínicos e laboratoriais em estudo e que concordaram e preencheram o termo de consentimento livre e esclarecido. A avaliação da situação clínica foi feita uma única vez, e assim como os resultados das expressões de CD 38 e ZAP 70, foi realizada através de revisão de prontuário médico. A análise do conteúdo de DNA por CF foi avaliada pelos dois métodos supracitados, a partir de arquivos do laboratório de citometria de fluxo da instituição. Como resultados, não se observou relação das expressões de ZAP-70 e CD38 com o estado clínico dos pacientes. Em relação à análise de índice de DNA e Fase S, não houve diferença estatística (p=0,69 e p=0,08 respectivamente utilizando-se os softwares ModFit LT™ e Infinicyt™). Também foi encontrado que os dados obtidos na análise de DNA indicam a possibilidade de utilização da Fase S na avaliação prognóstica dessa série de pacientes. Todos os três fatores estudados são considerados prognósticos. Não houve relação dos marcadores estudados com a evolução ...
Abstract: The Chronic Lymphocytic Leukemia (CLL) is a mature B lymphocytes malignancy, on heterogeneous clinical course, where some patients require immediate treatment and others live for decades without treatment. For this peculiarity, it's required the identification of prognostic markers and clinical value. The main objective was to retrospectively, evaluate the prognostic indicator of the disease progression (ZAP- 70, CD38, DNA ploidy and S phase) in patients under CLL, facing the clinical evolution. As secondary purposes, methodologies were compared to ZAP- 70 analysis by flow cytometry (FC) ISO Method and Single-Tube Analysis, as well as technical analysis of DNA content by the mathematical model (ModFit LT ™) and boolean gating principle (Infinicyt ™ ). On the registration of the cases observed, there were included 27 patients under the clinical and laboratory data who had available and filled in the term consenting agreement. The evaluation of the clinical situation was made only once, and the results of expressions and CD38 and ZAP 70, were held by reviewing medical records. The analysis of DNA content by CF was evaluated by the above two methods files from a laboratorial flow cytometry institution. As a result, no relation of the expressions of CD38 and ZAP- 70 with the clinical status of the patients was observed. Concerning the analysis of DNA index and S phase, there wasn't any statistical difference (p = 0.69 and p = 0.08 respectively using the ModFit LT ™ and Infinicyt ™ software ). It was also found that the data obtained in the analysis of DNA indicates the possibility of using the S phase in the prognostic evaluation of those patients. Conclusion: all the three factors studied are considered prognostic. There was no relation of the markers studied to the clinical course of patients. To correlate these data with clinical follow-up of those patients, it is necessary a longer period of time
Mestre
Fernandes, Margareth. ""Expressão de Zap-70 e CD38 em leucemia linfocítica crônica (LLC) e sua correlação com prognóstico"." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/5/5136/tde-30052006-160411/.
Full textActually, chronic lymphocytic leukemia (CLL) can be divided in two subsets: one with somatically mutated immunoglobulin heavy-chain variable-region genes (MIgVH) and other with unmutated sequences. (UMIgVH). Some studies have shown that CD38 expression in CLL cells are correlated with IgVH mutational status. However, the value of CD38 as surrogate IgVH mutational status is controversial. Recent studies, have found that Zap-70 protein tyrosine kinase expression is strongly associated with the mutational status IgVH. The aim of this study was to evaluate the Zap-70 and CD38 expression, for flow cytometry, in CD19+ LLC cells and correlate with the Binets staging system, treatment-free survival (TFS) and a overall survival (OS). Zap-70 and CD38 was evaluated, in 144 CLL patients that was classified in A, B and C Binets staging system: 59 (41%) in stage A, 38 (26%) in B and 47 (33%) in C. We observed low Zap-70 and CD38 expression in stage A patients than in stage B and C cases. When we analyzed the TFS in stage A patients Zap-70+ and CD38+ patients showed shorter TFS than Zap-70- and CD38-. Then we observed that the OS of Zap-70+ and CD38+ patients was, also, shorter than Zap-70- and CD38- cases. However, statistical differences was not found when Zap-70 and CD38 expression was correlated with stage A, B or C Binets staging system. To understand the associated Zap-70 and CD38 expression, we divided the CLL patients in two subgroups (Zap-70-/CD38 - and Zap-70+ or CD38+). We observed that CD38+ or Zap-70+ was associated Binets staging system, once most of stage B (74%) and C (66%) patients are Zap-70+ or CD38+. However, stage A patients, Zap-70+ or CD38+, showed shorter OS than Zap-70-/CD38-. These differences were not observed in stage B and C patients. Shorter TFS was also observed in the Zap-70+ or CD38+ stage A patients. These results suggest that combined analysis of Zap-70 and CD38 can be used to evaluate stage A patients to observe the clinical evolution of the disease. Nevertheless, other studies must be carried to confirm the clinical use of these markers.
Chiarelli, Maria Catarina Silveira. "Perfil clínico-laboratorial e associação com fatores prognósticos de pacientes com leucemia linfocítica crônica." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/5964.
Full textA Leucemia Linfocítica Crônica é a principal neoplasia linfóide em adultos e se manifeta principalmente em indivíduos idosos. Por ser uma doença heterogênea, desperta grande interesse quanto ao seu prognóstico. Rai e Binet desenvolveram sistemas de estadiamento capazes de prever a evolução da doença e atualmente, a análise da expressão de CD38 e Zap- 70 tem sido investigada como fator prognóstico por indicar presença ou ausência da mutação no gene IgVH, assim, o objetivo deste estudo foi analisar o perfil clínico-laboratorial dos pacientes com Leucema Linfocítica Crônica, tomando como referência os estadiamentos clínicos de Rai e Binet e a quantificação da expressão de CD38 e Zap-70 como fatores prognóstico. Foram pesquisados 64 prontuários médicos de pacientes atendidos no Hospital Universitário de Santa Maria e as variáveis consideradas foram aumento de linfonodos, presença ou ausência de hepatomegalia e/ou esplenomegalia, avaliação hematológica de sangue periférico e imunofenótipo. Os dados obtidos foram correlacionados com o estadiamento de Rai (1975) e Binet (1981), a expressão de CD38 e Zap-70 com o estádio clínico de Binet. Os resultados demonstraram que não há associação entre o estadiamento de Raí e Binet e a expressão de CD38, Zap-70 com o estadiamento clínico de Binet.
Duarte, Pollyanna Domeny. "Leucemia linfóide crônica : análise clínico-morfológica e imuno-histoquímica e correlação com fatores prognósticos clínicos /." Botucatu : [s.n.], 2009. http://hdl.handle.net/11449/88087.
Full textAbstract: Chronic lymphocytic leukemia (CLL) is a malignant neoplasm consisting of mature monomorphic B lymphocytes that accumulate in secondary lymphoid tissues, bone marrow and peripheral blood. Diagnosis is based on clinical, morphological and immunophenotypic findings. CLL patients are categorized according to clinical aspects for treatment management and currently, certain tools, such as prognostic marker ZAP- 70, have determined new treatment perspectives, especially for patients in early stages. The study aimed to evaluate the efficiency of ZAP-70 investigation in bone marrow biopsies (BMBs) and inclusion coagulate using immunohistochemistry; identify possible correlations of this marker in clinical evolution and risk of progression; correlate the immunoexpression of ZAP-70 with BMB reticulin network; evaluate whether this network correlates with disease prognosis and; outline an epidemiological profile of patients with CLL attended in the Clinics Hospital of Botucatu Faculty of Medicine (FMB). The sample consisted of 153 CLL patients attended at hematology outpatient clinic of the FMB-UNESP, from 1980 to 2008, and 9 CLL patients attended at the oncohematology service of the Amaral Carvalho Hospital, Jaú, from 2000 to 2008, totaling 162 cases. In 79 cases, medical records including BMB and bone marrow aspirate (BMA) morphological data were reviewed. Immunohistochemistry for ZAP-70 was conducted on paraffinated samples of BMB and inclusion coagulate. Observation revealed that: 55.7% were male, 86.1% white, with a median age of 65 years-old; 40.5% of cases were diagnosed by incidental findings in routine blood smears; 73.4% were diagnosed with peripheral adenomegaly on admission. 17.2% were diagnosed in the early stages and 15% of cases showed prolonged remission. BMB and BMA morphology revealed that 94.8% of patients presented increased cellularity... (Complete abstract click electronic access below)
Orientador: Lígia Niéro-Melo
Coorientador: Maria Aparecida Custódio Domingues
Banca: Lucilene Silva Ruiz e Resende
Banca: Lisandro Ferreria Lopes
Mestre
Machado, Rosângela Pinheiro Gonçalves. "Perfil clínico dos pacientes com LLC-B do Ambulatório do Hospital Universitário Walter Cantídio/Hemoce : corelação com marcadores biológicos de prognóstico." reponame:Repositório Institucional da UFC, 2009. http://www.repositorio.ufc.br/handle/riufc/1906.
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Introduction: Chronic lymphocytic leukemia (CLL) is a neoplasm characterized by clonal proliferation of lymphocytes of mature appearance. Clinically and prognostic heterogeneous. Rai and Binet established clinical prognostic systems that classify LLC in low, intermediate and high risk. Soon, the biological markers of prognosis that increased the predictive power of the LLC. Objective: To characterize the clinical and biological markers of pognóstico of patients with CLL the outpatient department of a university hospital (HUWC) / Center for Hematology and Hemotherapy Ceará / HEMOCE). Methodology: This is a retrospective, cross-sectional and observational 43 patients LLC, recruited so randomisation, from August 2007 to June 2009. We collected patient data from medical records, interview and three samples with 5.0 ml of peripheral venous blood in ethylenediaminetetraacetic acid (EDTA) for blood, for automated methodology CellDyn ® equipment, model 3500, measurement of ß2-microglobulin (ß2 - M) serum by automated quantitative test on the device MINI-VIDAS (BioMérieux ®) and immunophenotyping on flow cytometry Beckman Coulter ® EPICS XL-MCL (Coulter). Then collect the puncture of bone marrow aspirate and bone marrow examination for 4 to 5 ml in 2 ml of heparin for cytogenetic evaluation by Banda - G. Data analysis was performed using the statistical programs Biostat 4.0 and GraphPad Prism (version 5.00), the Phi coefficient test and the test coefficient Contingency C. The Fisher and chi-square test with significance level α = 5%. Kaplan-Meier survival function and log rank test. The results were generated using the free software R, version 2.7. Results: The patients (74.42%) were aged over 60 years, 58.14% 41.86% men and women, the majority (32.56%) worked in agriculture; brown (74.42%), coming the capital (53.49%), family history of unknown LLC (46.51%), symptomatic at diagnosis (53.49%), with comorbidity (arterial hypertension and Diabetes Mellitus) (51.16%), stage 0 ( 34.89%), I and II (51.16%), III and IV (13.95%) Rai, A (44.19%), B (44.19%) and C (11.62%) of Binet, lymphocyte doubling time (SRT) absent (81.40%), bone marrow biopsy with non-diffuse pattern (57.14%), lactate dehydrogenase (LDH) normal (83.72%), valued at diagnosis. The tests obtained during the course of the patients showed an immunophenotypic profile of classic B-CLL with expression of CD5 +, CD19 +, CD23 + surface immunoglobulin and low-expression, most with Zap-70 negative (77.50%); expression CD38 negative (73.81%), beta-2 microglobulin increased (55.81%), normal karyotype (44.4%) and genetic alterations in 11, 11% by classical cytogenetics. Survival curves of patients with Zap-70 negative and CD38 showed longer survival free of treatment. Conclusion: The patients studied were elderly, to encourage improve with late diagnosis due to the socioeconomic context, LLC indolent presented by classical staging criteria (Rai, Binet, TDL, standard bone marrow histology, LDH) and biological (the expression of Zap -70 and CD38), except for beta-2 microglobulin, but without statistical significance. Those with Zap-70 and CD38 negative had higher survival free of treatment. Male patients showed progress and prognosis similar to female. The prevalent treatment was associated with chlorambucil prednisone and did not lead patients to clinical remission or hematologic. The prognostic markers of the correlation tended to identify patients within the subgroups of risk.
Introdução: A Leucemia Linfocítica Crônica (LLC) é uma neoplasia caracterizada pela proliferação clonal de linfócitos de aspecto maduro. Apresenta curso clínico e prognóstico heterogêneo. Rai e Binet criaram sistemas de prognósticos clínicos que classificam a LLC em baixo, intermediário e alto risco. Surgiram os marcadores biológicos de prognóstico que aumentaram o poder preditivo na LLC. Objetivo:Caracterizar os marcadores clínicos e biológicos de pognóstico dos pacientes com LLC do ambulatório do Hospital Universitário Walter Cantídio (HUWC)/Centro de Hematologia e Hemoterapia do Ceará/HEMOCE. Metodologia: Trata-se de um estudo retrospectivo, transversal e observacional com 43 pacientes portadores de LLC, recrutados de forma randomisada, no período de agosto de 2007 a Junho de 2009. Foram coletados dos pacientes dados nos prontuários, entrevista e três amostras com 5,0 ml de sangue venoso periférico em ácido etilenodiaminotetraacético (EDTA) para o hemograma, por metodologia automatizada no equipamento CellDyn®, modelo 3.500; dosagem da ß2-microglobulina (ß2-M) sérica pelo teste quantitativo automatizado no aparelho MINI- VIDAS (BioMérieux®) e imunofenotipagem em citômetro de fluxo Beckman Coulter® EPICS XL-MCL (Coulter). Em seguida, foi coletado pela punção da medula óssea o aspirado para o mielograma e 4 a 5 ml, em 2 ml de heparina, para a avaliação citogenética por banda–G. A análise dos dados foi realizada utilizando os programas estatísticos Biostat 4.0 e GraphPad Prism (versão 5.0), o teste Coeficiente de Phi e o teste Coeficiente de Contingencia C. Os testes de Fisher e Qui-quadrado com índice de significância α = 5%. Kaplan-Meier para função de sobrevivência e o teste log rank. Os resultados foram gerados usando o software livre R, versão 2.7. Resultados: Os pacientes (74,42%) tinham idade acima de 60 anos; 58,14% homens e 41,86% mulheres; a maioria (32,56%) trabalhava na agricultura; pardos (74,42%), procedentes da capital (53,49%); história familiar de LLC desconhecida (46,51%); sintomáticos ao diagnóstico (53,49%); com comorbidades (hipertenção arterial e Diabetes Melitus) (51,16%); estágio 0 (34,89%), I e II (51,16%), III e IV (13,95%) de Rai; A (44,19%), B (44,19%) e C (11,62%) de Binet ; tempo de duplicação linfocitára (TDL) ausente (81,40%); biópsia da medula óssea com padrão não difuso (57,14%); a desidrogenase láctica (LDH) normal (83,72%), avaliados ao diagnóstico. Os exames obtidos durante a evolução dos pacientes revelaram um perfil imunofenotípico clássico de LLC- B, com expressão de CD5+, CD19+, CD23+ e imunoglobulina de superfície de baixa expressão; a maioria com Zap-70 negativa (77,50%); expressão de CD38 negativa (73,81%); ß2-M aumentada (55,81%); cariótipo normal (44,4%) e alterações genéticas em 11, 11% pela citogenética clássica. As curvas de sobrevidas dos pacientes com Zap-70 e CD38 negativos apresentaram maior tempo de sobrevida livre de tratamento. Conclusão:Os pacientes avaliados eram idosos, com tendêndia ao diagnostico tardio decorrente do contexto socioeconômico; apresentaram LLC indolente, pelos critérios de estadiamentos clássicos (Rai, Binet, TDL, padrão da histologia da medula óssea, LDH) e biológicos (as expressões da Zap-70 e CD38), exceção à ß2-M, porém, sem significância. Aqueles com Zap-70 e CD38 negativos apresentaram maior sobrevida livre de tratamento. Pacientes do sexo masculino apresentaram evolução e prognóstico semelhantes ao feminino. O tratamento prevalente foi clorambucil associado à prednisona e não levou os pacientes à remissão clínica ou hematológica. Os marcadores de prognósticos tenderam à correlação na identificação dos pacientes dentro dos subgrupos de riscos.
Júnior, Edilson Diógenes Pinheiro. "Experiência do Serviço de Hematologia do Hospital das Clínicas da FMUSP com leucemia linfóide aguda do adulto: avaliação clínica, laboratorial e dos protocolos de tratamento." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5136/tde-24062008-122745/.
Full textAcute lymphoblastic leukemia in adults has a poor outcome. The aim of this study is to describe and evaluate clinical, laboratory and prognostic factors in 102 patients reated with different protocols of chemotherapy from 1990 to 2005. Adult ALLsubtype L3 (FAB) or B-IV (EGIL) was excluded. We evaluated complete remission (CR), overall survival (OS) and disease free survival (DFS) rates for the whole population and for the two principal treatment protocols. This retrospective cohort was done in hematology department of the FMUSP. Statistical analysis was done by SPSS 10.0. The association of features and prognosis was assessed by Person\'s chi-square. OS and DFS curves were constructed by Kaplan-Meier method and the differences were calculated by the log-rank test. Mean age was 30,6 (12 to 82) years and 55,9% was male. Clinical findings, at diagnosis, were fatigue (58,2%), splenomegaly (59,7%), hepatomegaly (54,6%), ymphadenopathy (52,6%), fever (38,8%), bone pain (28,6%), bleeding (27,5%) and headache (15,3%). Involvement of central nervous system (CNS) was detected in 11 (11,8%) patients and testicular involvement was observed in one patient. Mean blood values were 8,5g/dl, 84.341/mm3 and 76.275/mm3 for hemoglobin, leucocytes and platelets respectively. 98,7% of the patients presented with lymphoblasts in peripheral blood. FAB classification was equally observed between L1 and L2. B and T ALL was noted in 69,7% and 30,2% respectively. Karyotype analysis was performed in 40 cases, where Philadelphia chromosome (ph) was identified in 20% (8/40) of them. Patients were treated with four different protocols: BFM 86 modified (BFM 86M) in 47,1% (48/102), Linker et al in 39,2% (40/102), Lister et al in 5,9% (6/102) and CHOP in 7,8% (8/102) of the patients. In the judgment for the entire population, in induction treatment, 70,6% (65/92) of the patients had CR. Age below 18 years and no infiltration in CNS were positive factors for CR in multivariate analyses (p=0,03). In a median follow up of 49 months, we have observed a 4 years OS and DFS of 30,5% and 27% respectively. No bleeding and hepatomegaly, at diagnosis, and age less than 35 years were factors associated a better OS in multivariate analyses (p=0, 01). Protocols with highest number of patients (BFM and Linker) showed the same distribution of clinical and laboratory factors; exception FAB classification. CR were seen in 76,7% and 63,9% of the patients treated with BFM 86M and Linker respectively. (p=0,21). OS was 49,5% with BFM protocol in 4 years Vs 16% with Linker (p=0,004). We observed a better OS for patients with age below 35 years (p=0,01), no bleeding and no hepatomegaly at diagnosis (p=0,03 ; p=0,01) and no leucocytosis ( B < 30000/mm3 and T < 100000/mm3) treated with BFM 86M; however ALL - T treated with Linker protocols had inferior OS (p=0,05). DFS between protocols wasn\'t significant (p=0,58), but with age between 21 and 35 years BFM was better (p=0,03). We conclude that BFM 86M is superior than Linker et al and it is a good treatment for childhood / young adults without risk factors
Silva, Flávia Amoroso Matos e. "Estudo do compartimento de linfócitos T CD4+ em pacientes com LLC-B: distribuição das subpopulações TH1, TH2, TH17 e TREG e avaliação da expressão de FAS e FASL." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/42/42133/tde-24022015-082206/.
Full textB-CLL is a hematologic malignancy derived from a mature population of CD5+ Blymphocytes located in the mantle zone of the lymphoid follicles and is the most common lymphoproliferative disorders. It is a clinically heterogeneous disorder in which patients have certain frames idle for many years that can be controlled with little or no treatment. Literature reports suggest that T lymphocytes in B-CLL may be unable to initiate, sustain and complete an immune response to the malignant B cell and other antigens, and may be directly involved in tumor maintenance. The lymphocytes are activated, proliferate and polarize their response patterns to pro-inflammatory or anti-inflammatory, increasing its population and becoming able to perform their effector functions. Although the process of Th lymphocyte activation is essential for host defense, there must be a homeostatic balance, where autoreactive cells are eliminated or recurrently activated. The latter mechanism of maintenance of immune balance, gives the name of Peripheral Tolerance, and the process of activation-induced cell death (AICD) is a major mechanism for its maintenance. In this study group members of the superfamily of membrane receptors of tumor necrosis factor (tumor necrosis factor receptor, TNFR) receptors were also analyzed. The TNFR family includes many receptors, including FAS (CD95) and its ligand FasL. The central objective of this study is to investigate changes in T lymphocyte compartments as Th1, Th2, Th17 and Treg as well as members of the extrinsic death pathway, FAS and FASL in CD4+ lymphocytes. The results showed that the absolute number of CD4+, CD8+ and Th1 lymphocytes is heterogeneous, with some patients showed an increase and others decrease of these cells when compared with the control group of the study. Regarding the expression of FAS and FASL results also showed heterogeneity. Thus each patient was analyzed and compared to the prognostic factors and to clinical data in each case. Much remains to be investigated, but this work has the prospects look better understanding of the role of the B-CLL CD4+ T lymphocytes, expanding the possibilities of treatment and the search for new therapeutic targets.
Cabeças, Teresa Maria Santos. "Leucemia linfocítica crónica: sintomas, diagnóstico e abordagens terapêuticas." Master's thesis, 2016. http://hdl.handle.net/10451/35895.
Full textA Leucemia Linfocítica Crónica (LLC) é a forma de leucemia com maior taxa de diagnóstico na Europa Ocidental e América do Norte, constituindo o tipo de leucemia mais comum em adultos. Classificada como uma desordem linfoproliferativa, resulta da acumulação progressiva no sangue periférico, medula óssea, nódulos linfáticos e baço, de linfócitos B maduros com imunofenótipo peculiar. O seu curso clínico é caracterizado pela sua heterogeneidade. Enquanto que, na maioria dos doentes, a LLC se apresenta sem sintomatologia, necessitando apenas de uma vigilância cuidadosa durante muitos anos, noutros casos, a doença manifesta-se de forma agressiva, e o tratamento é necessário logo após o seu diagnóstico. Este é estabelecido através da contagem absoluta de linfócitos igual ou superior a 5000 células/mm3, e por um fenótipo característico, que resulta da combinação entre o antigénio CD5 (presente na linhagem T) com os marcadores dos linfócitos B típicos - CD19, CD20 e CD23. O estadiamento da doença é baseado nas classificações de Rai e Binet, contudo novos marcadores de prognóstico têm sido descobertos, permitindo uma melhoria na estratificação dos doentes. Apesar da LLC continuar a ser uma doença incurável, ao longo da última década, têm sido alcançados avanços importantes no conhecimento da sua biologia e no seu arsenal terapêutico. A imunoquimioterapia é considerada a primeira-linha de tratamento dos doentes com LLC, todavia, novos agentes direcionados como os inibidores da tirosina cinase de Bruton (BTK), inibidores da fosfatidilinositol-3-cinase (PI3K) e inibidores da BCL-2, têm sido estudados como tratamento de primeira-linha e doença refratária/recidiva, em monoterapia e em terapias combinadas, apresentando-se como propostas promissoras com um perfil de segurança favorável.
Chronic Lymphocytic Leukemia (CLL) is the leukemia form with higher rates of diagnosis in Western Europe and North America, representing the most common type of leukemia in adults. Classified as a lymphoproliferative disorder, results from the progressive accumulation in peripheral blood, bone marrow, lymph nodes and spleen of mature B lymphocytes with a peculiar immunophenotype. Its clinical course is characterized by its heterogenicity. While in most patients, CLL presents no symptoms, requiring only a careful monitoring for many years, in other cases, the disease manifests itself aggressively, and treatment is required immediately after diagnosis. This is established by absolute lymphocyte count equal or higher than 5000 cells/mm3 and by a distinctive phenotype that results from the combination of CD5 antigen (present in the T lineage) with typical B lymphocytes markers - CD19, CD20 and CD23. The staging of the disease is based on Rai and Binet ratings, however new prognostic markers have been discovered, allowing an improved stratification of the patients. Although CLL remains an incurable disease, important advances have been achieved over the last decade in the knowledge of its biology and therapeutic arsenal. The immunochemotherapy is considered first-line treatment of patients with CLL. However, new target agents as tyrosine kinase inhibitors of Bruton (BTK), phosphatidylinositol-3 kinase inhibitors (PI3K) and BCL-2 inhibitors have been studied as first-line and refractory/relapse therapy in monotherapy and in combination therapy, presenting themselves as promising proposals with a favorable safety profile.
Conference papers on the topic "Leucemia linfocítica - Prognóstico"
Azevedo, Ingrid Nayara Duarte, Caroline De Brito Ferreira, Josiany Souza Lins De Vasconcelos, Maria Beatriz Medeiros Vale Costa, and Yade Farias Nunes. "ALTERAÇÕES CLÍNICAS E LABORATORIAIS EM GATOS ACOMETIDOS POR LINFOMA ALIMENTAR." In I Congresso On-line Nacional de Clínica Veterinária de Pequenos Animais. Revista Multidisciplinar em Saúde, 2021. http://dx.doi.org/10.51161/rems/1845.
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