Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 18 de 18
Filter
1.
Article in Chinese | WPRIM | ID: wpr-880097

ABSTRACT

OBJECTIVE@#To evaluate the clinical efficacy and safety of domestic imatinib (made in China) in patients with newly diagnosed chronic myeloid leukemia chronic phase(CML-CP).@*METHODS@#Fifty-seven newly diagnosed CML-CP patients who did not receive any other anti-CML treatment were treated by domestic imatinib 400 mg once a day. The hematological, cytogenetic and molecular reactions and safety were observed and evaluated after 3, 6 and 12 months of treatment.@*RESULTS@#Fifty-six patients were treated for ≥3 and 6 months, among which 50 patients were treated for ≥12 months. After 3 months of treatment, 49 patients underwent hematological examination, 47 patients (95.9%) achieved complete hematological response (CHR), 49 patients underwent cytogenetic examination, 39 patients (79.6%) achieved major cytogenetic response (MCyR), and 12 patients (24.5%) achieved complete cytogenetic response (CCyR). 49 patients underwent the level of BCR-ABL test, including 41 patients (83.7%) with BCR-ABL@*CONCLUSION@#In the real world, Domestics imatinib mesylate is effective and safe in the treatment of newly diagnosed CML-CP patients, but long-term follow-up data are still necessary to verify its long-term efficacy.


Subject(s)
Antineoplastic Agents/therapeutic use , Benzamides/therapeutic use , China , Fusion Proteins, bcr-abl/genetics , Humans , Imatinib Mesylate/therapeutic use , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy , Piperazines , Pyrimidines/therapeutic use , Treatment Outcome
3.
Brasília; s.n; 2 jul. 2020.
Non-conventional in Portuguese | PIE, LILACS, BRISA, PIE | ID: biblio-1117621

ABSTRACT

O Informe Diário de Evidências é uma produção do Ministério da Saúde que tem como objetivo acompanhar diariamente as publicações científicas sobre tratamento farmacológico e vacinas para a COVID-19. Dessa forma, são realizadas buscas estruturadas em bases de dados biomédicas, referente ao dia anterior desse informe. Não são incluídos estudos pré-clínicos (in vitro, in vivo, in silico). A frequência dos estudos é demonstrada de acordo com a sua classificação metodológica (revisões sistemáticas, ensaios clínicos randomizados, coortes, entre outros). Para cada estudo é apresentado um resumo com avaliação da qualidade metodológica. Essa avaliação tem por finalidade identificar o grau de certeza/confiança ou o risco de viés de cada estudo. Para tal, são utilizadas ferramentas já validadas e consagradas na literatura científica, na área de saúde baseada em evidências. Cabe ressaltar que o documento tem caráter informativo e não representa uma recomendação oficial do Ministério da Saúde sobre a temática. Foram encontrados 17 artigos e 9 protocolos.


Subject(s)
Humans , Pneumonia, Viral/drug therapy , Coronavirus Infections/drug therapy , Betacoronavirus/drug effects , Technology Assessment, Biomedical , Zinc/therapeutic use , Ivermectin/therapeutic use , Angiotensin-Converting Enzyme Inhibitors/therapeutic use , Vaccines/therapeutic use , Adrenal Cortex Hormones/therapeutic use , Fingolimod Hydrochloride/therapeutic use , Imatinib Mesylate/therapeutic use , Abatacept/therapeutic use , Glucocorticoids/therapeutic use , Hydroxychloroquine/therapeutic use
4.
J. coloproctol. (Rio J., Impr.) ; 40(1): 12-19, Jan.-Mar. 2020. tab, graf, ilus
Article in English | LILACS | ID: biblio-1090846

ABSTRACT

Abstract Background This study defines the disease profile in south Indian population and determine the clinic-pathological aspects of Gastro-Intestinal Stromal Tumors. Method In this prospective study patients diagnosed of gastrointestinal stromal tumors were taken thorough clinical examination and a database of Anthropometric details and clinical details were analyzed. Pathological data included tumor size, presence or absence necrosis, mitotic counts, immunohistochemistry for CD-117, CD-34. Results There were 44 patients with confirmed diagnosis of gastro-intestinal stromal tumor. The highest incidence was found in the 6th decade. The most common symptoms were abdominal pain and gastrointestinal bleed. Stomach was most frequent site for gastro-intestinal stromal tumors. Immunochemistry for CD-117 was positive in 93.18% cases. Majority of tumors (79.5%) had pure spindle cell morphology and mitotic activity showed that 34% of the GISTs were of the high risk group. Forty two patients were suggestive of surgery as the primary treatment after presentation. Conclusion Abdominal pain was the most common presenting complaint. Majority of the tumors aroused from the stomach. The majority of the tumors had pure spindle cell morphology and 93% of the tumors were CD-117 positive. A significant relationship between tumor size, tumor necrosis and mitotic activity with large tumors having necrosis and high mitotic rate having high risk of malignancy, was observed. Surgical resection is considered mainstay of treatment of gastro-intestinal stromal tumor. Imatinib therapy should be given to patients in moderate to severe risk categories.


Resumo Justificativa Este estudo define o perfil da doença na população do sul da Índia e determina os aspectos clínicos e patológicos dos tumores estromais gastrointestinais. Método Neste estudo prospectivo, os pacientes diagnosticados com tumor estromal gastrointestinl foram submetidos a um exame clínico completo, e uma série de dados dos pacientes, incluindo detalhes antropométricos e clínicos, foram analisados. Os dados patológicos incluíram tamanho do tumor, presença ou ausência de necrose, contagem mitótica e imuno-histoquímica para CD-117, CD-34. Resultados Havia 44 pacientes com diagnóstico confirmado de tumor estromal gastrointestinal. A maior incidência foi encontrada na 6ª década de vida. Os sintomas mais comuns foram dor abdominal e sangramento gastrointestinal. O estômago foi o local mais frequente para tumores estromais gastrointestinais. A imuno-histoquímica para CD-117 foi positiva em 93,18% dos casos. A maioria dos tumores (79,5%) apresentava morfologia pura de células fusiformes e a atividade mitótica mostrou que 34% dos GISTs pertenciam ao grupo de alto risco. Quarenta e dois pacientes receberam indicação para cirurgia como tratamento primário após a apresentação. Conclusão A dor abdominal foi a queixa mais comum. A maioria dos tumores afetava o estômago, apresentava morfologia pura de células fusiformes e 93% eram CD-117 positivos. Foi observada uma relação significativa entre o tamanho do tumor, a necrose tumoral e a atividade mitótica, com os tumores grandes apresentando necrose e alta taxa mitótica com alto risco de malignidade. A ressecção cirúrgica é considerada o principal tratamento do tumor estromal gastrointestinal. A terapia com imatinibe deve ser administrada a pacientes em categoria de risco de moderadas a grave.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Young Adult , Gastrointestinal Stromal Tumors/pathology , Gastrointestinal Neoplasms , Proto-Oncogene Proteins c-kit/immunology , Antigens, CD34/immunology , Imatinib Mesylate/therapeutic use , India , Antineoplastic Agents/therapeutic use
5.
J. coloproctol. (Rio J., Impr.) ; 40(1): 89-93, Jan.-Mar. 2020. ilus
Article in English | LILACS | ID: biblio-1090838

ABSTRACT

Abstract Here we describe an infrequent case of gastrointestinal stromal tumor of the rectum in a 57 year-old man with spindle cell neoplasm probably gastrointestinal stromal tumor and CT scan showed tumor from the anterior rectal wall and offered abdominoperineal resection for the same. The patient was started on imatinib and had a significant reduction in symptoms. The patient was reassessed with the CT scan, which showed a reduction in tumor size and Transanal minimally invasive surgery was planned for the patient. Use of imatinib prior to surgical resection to attain the reduced size of the tumor within the limit of resection is an attractive approach. Since tumor development can happen rapidly again after substantial tumor shrinkage, the best time to operate depending on resectability and the maximum therapeutic outcome remains divisive.


Resumo No presente estudo, os autores descrevem um caso raro de tumor estromal gastrointestinal no reto em um homem de 57 anos que se apresentou com neoplasia de células fusiformes, com provável tumor estromal gastrointestinal. A tomografia computadorizada demonstrou tumor na parede anterior do reto e foi sugerida sua ressecção abdominoperineal. O paciente iniciou tratamento com imatinibe e apresentou uma redução significativa nos sintomas. O paciente foi reavaliado por tomografia computadorizada, que evidenciou redução do tamanho do tumor; portanto, foi indicada cirurgia transanal minimamente invasiva. O tumor era ressecável e foi necessário um extenso acompanhamento para romper o órgão, de forma a alcançar a ressecção máxima; caso contrário, o tumor estromal gastrointestinal também seria irressecável. O uso de imatinibe antes da ressecção cirúrgica para reduzir o tamanho do tumor dentro do limite de ressecção é uma abordagem interessante. Como o tumor pode se crescer rapidamente após ser substancialmente reduzido, a literatura ainda apresenta controvérsias quanto ao melhor momento para operar e quanto ao melhor desfecho terapêutico.


Subject(s)
Humans , Male , Middle Aged , Rectal Neoplasms/therapy , Gastrointestinal Stromal Tumors/therapy , Imatinib Mesylate/therapeutic use , Transanal Endoscopic Surgery , Antineoplastic Agents/therapeutic use , Rectal Neoplasms/diagnosis , Gastrointestinal Stromal Tumors/diagnosis
6.
Hematol., Transfus. Cell Ther. (Impr.) ; 41(4): 329-334, Oct.-Dec. 2019. tab
Article in English | LILACS | ID: biblio-1056235

ABSTRACT

ABSTRACT Introduction: The incidence of grade 3-4 anemia was reported to be 3% with imatinib therapy for newly diagnosed chronic myeloid leukemia (CML) in the chronic phase (CP). However, there are few data regarding the causes and the development of anemia after long-term treatment. This study aimed to evaluate the incidence of anemia after at least two years of imatinib treatment of CML patients in the CP and to identify other contributing causes of anemia in this population. Patients and methods: We performed a retrospective analysis of 97 CML patients in the CP treated with imatinib for at least two years. We analyzed the hemoglobin (Hb) levels of CML patients at diagnosis, upon initiation of treatment with imatinib and after two years of imatinib treatment, and investigated other causes of anemia in this population. Results: Most of the patients presented Hb levels below the normal range (80.4%) after the second year of treatment, 17.9% grade 2 and 1.3% grade 3. In 13 cases (16.7%), anemia was attributed to resistance and in 13 cases (16.7%) the following causes were identified: iron deficiency (n = 5), hypothyroidism (n = 2), vitamin B12 deficiency (n = 3), acquired immune deficiency syndrome (AIDS) (n = 1), pulmonary tuberculosis (n = 1) and renal toxicity (n = 1). In 52 patients (66.6%), there were no other factors contributing to anemia, except imatinib treatment. Conclusion: Regular follow-up is required to identify the causes of anemia not related to CML or imatinib toxicity. The importance of investigating secondary causes of anemia should be emphasized, especially in patients with good adherence to treatment and satisfactory therapeutic response.


Subject(s)
Humans , Male , Female , Leukemia, Myelogenous, Chronic, BCR-ABL Positive , Drug-Related Side Effects and Adverse Reactions , Imatinib Mesylate/adverse effects , Imatinib Mesylate/therapeutic use , Anemia
7.
Rev. cuba. hematol. inmunol. hemoter ; 35(1): e960, ene.-mar. 2019. graf
Article in Spanish | LILACS | ID: biblio-1003890

ABSTRACT

RESUMEN El cromosoma Filadelfia (Ph por su abreviatura del inglés "Philadelphia") se presenta en más del 90 % de los pacientes con leucemia mieloide crónica. Un cromosoma Ph extra es una de las alteraciones secundarias comúnmente observada como evolución clonal de la enfermedad y se puede presentar como un derivativo adicional o un isocromosoma del 22 derivativo. Es una alteración adquirida durante la progresión de la enfermedad con implicación pronóstica. Se presentan dos casos con diagnóstico de leucemia mieloide crónica, resistentes al tratamiento con mesilato de imatinib. En el estudio cromosómico con técnica de banda G se observaron en ambos pacientes líneas celulares con dos isocromosomas del derivativo del 22, 2ider (22) t (9; 22). El primer caso falleció en crisis blástica y el segundo luego de no responder al tratamiento de primera línea, se le indicó nilotinib pero su evolución fue no satisfactoria. Las alteraciones cromosómicas secundarias están asociadas con un impacto negativo en la supervivencia y progresión a fase acelerada y crisis blástica de la enfermedad.


ABSTRACT The Philadelphia chromosome (Ph) is present in more than 90% of patients with chronic myeloid leukemia. An extra Ph chromosome is one of the secondary alterations commonly observed in clonal evolution and it could be as na additional derivative or anisochromosome of the derivative. It is na alteration acquired during the progression of the disease with prognostic implications. We present two cases with a diagnosis of chronic myeloid leukemia, Who showed resistance to treatment with imatinib mesylate. In both patients,the chromosomal study with G-band technique, show cell lines with two isochromosomes from the derivative of 22, 2ider(22)t(9; 22). The first case died in blast crisis and to the second after not responding to the first line treatment, was precribed nilotinib but the evolution was unsatisfactory. Secondary chromosomal alterations are associated with a negative impact on survival and the progression to accelerated phase and blast crisis of the disease.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Philadelphia Chromosome , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/complications , Case Reports , Imatinib Mesylate/therapeutic use
8.
Rev. chil. cir ; 70(4): 342-349, ago. 2018. tab, ilus
Article in Spanish | LILACS | ID: biblio-959393

ABSTRACT

Resumen Introducción: El tratamiento de los tumores estromales gastrointestinales (GIST) de alto riesgo es quirúrgico. Su resultado podría variar al usarse neoadyuvancia. Objetivo: Evaluar si el uso de la terapia neoadyuvante con imatinib puede cambiar el abordaje quirúrgico en los tumores estromales gastrointestinales de alto riesgo. Materiales y Métodos: Se realizó un análisis retrospectivo en el Hospital Clínic de Barcelona entre enero de 2002 y mayo de 2016. Resultados: Se obtuvo un total de 8 pacientes. La edad media fue 66,1 ± 13,3 años. La ubicación del tumor fue de 37,5% (3) en el tercio superior, el 50% (4) en el tercio medio y el 12,5% (1) en el tercio inferior. Debido a la clasificación de riesgo alto, la ubicación y/o la necesidad de resecciones multiviscerales, se indicó, previa evaluación comité oncológico, realizar terapia neoadyuvante. La mediana de tiempo de neoadyuvancia fue de 30 semanas. En el 100% (8) de los casos se logró un cambio de enfoque quirúrgico después de la utilización de imatinib. En todos los casos se realizó un resección local (7 laparoscópica y 1 endolaparoscópica) con márgenes negativos La biopsia posoperatoria mostró un promedio de 51,2% de reducción del tamaño tumoral inicial, lo que resultó en una diferencia estadística (p < 0,01) con el tamaño inicial de las lesiones. Durante el seguimiento, tanto la sobrevida relacionada al tumor como la global, fue de un 100%. Conclusión: La terapia neoadyuvante podría cambiar el abordaje quirúrgico de los pacientes con GIST gástrico de riesgo intermedio o alto mediante la reducción del tamaño tumoral, permitiendo realizar cirugías más económicas y logrando resultados oncológicos adecuados.


Introduction: The treatment of high-risk gastrointestinal stromal tumors (GIST) is surgical. Results may change when using neoadjuvant. Objetive: To evaluated if the use of neoadjuvant therapy with imatinib can change the surgical approach in high risk gastrointestinal stromal tumors (GIST). Materials and Methods: A retrospective analysis was performed from a prospective collected database in Hospital Clinic of Barcelona between January 2002 and May 2016. Results: A total of 8 patients were analyzed with a mean age of 66.1 ± 13.3 years. The tumor location was upper third 37.5% (3) cases, 50% (4) in the middle third and 12.5% (1) in lower third. Because of high risk classification, location and the need of multivisceral resections, neoadjuvant therapy was indicated. The median time of neoadjuvant therapy was 30 weeks. In 87.5% (7) cases a change of surgical approach was achieved after the use of imatinib. In 100% of our series laparoscopic wedge resection was performed achieving negative margins of resection. The postoperative biopsy showed 51.2% of reduction of initial tumor size, resulting in statistical difference (p < 0.01). All patients are alive and 100% of tumor related survival was achieved. Conclusion: Neoadjuvant therapy maybe can change the surgical approach of patients with high-intermediate risk gastric GIST by reducing tumor size. This response also eventually can achieve optimal oncological outcome.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Stomach Neoplasms/drug therapy , Neoadjuvant Therapy/methods , Gastrointestinal Stromal Tumors/drug therapy , Imatinib Mesylate/therapeutic use , Antineoplastic Agents/therapeutic use , Stomach Neoplasms/surgery , Retrospective Studies , Treatment Outcome , Laparoscopy , Gastrointestinal Stromal Tumors/surgery
9.
Medicina (B.Aires) ; 77(4): 334-346, ago. 2017. ilus
Article in Spanish | LILACS | ID: biblio-894490

ABSTRACT

El tumor estromal gastrointestinal (GIST) representa alrededor del 1% de todos los tumores digestivos y su aparición en pacientes trasplantados renales es infrecuente. Aproximadamente el 95% muestra tinción positiva para c-kit/CD117. DOG1 es un anticuerpo recientemente descrito que se sobre-expresa en los GIST, incluso en c-kit/ CD117 negativos. El diagnóstico preciso de GIST resulta imperativo, debido a la disponibilidad y la creciente eficacia de los inhibidores de la tirosina quinasa en estos tumores, incluso en el subgrupo c-kit/ CD117 negativo. Se presenta el caso de una mujer trasplantada renal inicialmente con GIST en intestino delgado y débil positividad para CD117 tratada con cirugía y recidiva tumoral a los tres años, pérdida de la expresión CD117 y tinción positiva para DOG1. Recibió tratamiento exitoso con imatimib sin presentar recaída tumoral durante un seguimiento de cinco años.


Gastrointestinal stromal tumor (GIST) accounts for nearly 1% of all gastrointestinal tumors. Its association with renal transplantation is not frequent. Approximately 95% of GIST show staining for CD177. DOG1 is a recently described monoclonal antibody that shows positivity even in the absence of CD177 staining. The diagnosis of GIST should be pursued because of the availability of very effective treatments with tyrosine-kinase inhibitors. Herein, we describe the case of a woman with renal transplant who presented a small bowel GIST and weak positivity for CD177, treated initially with surgery. Tumor recurrence was documented 3 years later and histopatology showed loss of CD177 staining and positivity for DOG1. She was treated with imatimib without further recurrence after five years of follow up.


Subject(s)
Humans , Female , Young Adult , Biomarkers, Tumor/blood , Kidney Transplantation/adverse effects , Proto-Oncogene Proteins c-kit/blood , Gastrointestinal Stromal Tumors/diagnosis , Anoctamin-1/blood , Neoplasm Proteins/blood , Gastrointestinal Stromal Tumors/drug therapy , Imatinib Mesylate/therapeutic use , Neoplasm Recurrence, Local , Antineoplastic Agents/therapeutic use
10.
Medicina (B.Aires) ; 77(3): 161-166, jun. 2017. graf, tab
Article in Spanish | LILACS | ID: biblio-894451

ABSTRACT

La supervivencia a cinco años de los pacientes con leucemia mieloide crónica en fase crónica tratados con inhibidores de tirosina quinasa es superior al 90%. Existen escasos datos a nivel local. Esta información puede ser de interés, ya que el imatinib genérico se encuentra disponible en la región. El objetivo del presente estudio es proporcionar información del monitoreo y los resultados a largo plazo del tratamiento con imatinib fuera de un ensayo clínico controlado, así como analizar el valor predictivo de respuestas tempranas para el logro de respuesta molecular 4.0 y la detección de variables que puedan condicionar falla al tratamiento. Se incluyeron 106 pacientes tratados con imatinib 400 mg diarios como inhibidor de primera línea durante una mediana de 8.9 años IQR (5.8-11.7) entre junio del 2000 y diciembre del 2015. La supervivencia global fue de 93%. En la última evaluación, 74% de los pacientes continuaba recibiendo el imatinib inicial. La obtención de respuesta en los objetivos temporales específicos (6, 12 meses) se asoció con mayor supervivencia libre de falla: 87% vs. 56%, p = 0.007; 90% vs. 69% p = 0.01 y mayor adquisición de respuesta molecular 4.0: OR 5.6 (IC 95% 1.6-19.0) p = 0.003; OR 5.3 (IC 95% 1.4-21.0) p = 0.006. Luego del prolongado seguimiento, el imatinib proporcionó altas tasas de respuesta y supervivencia. Se confirmó el valor pronóstico de la respuesta en momentos temporales específicos. Este estudio refuerza la importancia del monitoreo estandarizado en los puntos temporales conocidos, que debe continuar siendo un objetivo en Argentina.


The expected five-year survival of chronic-phase chronic myeloid leukemia patients treated with tyrosine kinase inhibitors is over 90%. Little data is available regarding the results in the Argentinian population. This information might be of interest as generic imatinib is now available in the region. The aim of this study is to provide information on monitoring and the long-term treatment with imatinib outside of a controlled clinical trial, as well as to analyze the predictive effect of early responses to achieve molecular remission 4.0 (RM 4.0) and the detection of variables that may condition treatment failure. We included 106 patients, who received imatinib 400 mg daily as first-line inhibitor for a median of 8.9 years (IQR 5.8-11.7) between June 2000 and December, 2015. Overall survival was 93%. At latest follow-up 74% of patients continues on initial imatinib. The achievement of response at targeted milestones (6, 12 months) was associated with increased failure-free survival: 87% vs. 56%, p = 0.007; 90% vs. 69% p = 0.01 and was independently associated to RM 4.0: OR 5.6 (95% CI: 1.6-19.0); OR 5.3 (95% CI: 1.4-21.0) p = 0.006. After long-term follow-up, imatinib provided high-rates of response and survival. The prognostic value of response at targeted milestones was confirmed. This study reinforces the importance of molecular monitoring under IS standardization at known timepoints and this must continue to be a target in Argentina.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Aged, 80 and over , Young Adult , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy , Imatinib Mesylate/therapeutic use , Antineoplastic Agents/therapeutic use , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics , Survival Analysis , Predictive Value of Tests , Follow-Up Studies
12.
Santiago; Chile. Ministerio de Salud; 2017. ilus, tab.
Monography in Spanish | LILACS, BRISA | ID: biblio-882245

ABSTRACT

INTRODUCCIÓN: Los tumores mesenquimatosos del tracto gastrointestinal más frecuentes son los del estroma gastrointestinal (GIST). Se localizan preferentemente en el estómago y el intestino delgado, aunque pueden desarrollarse en cualquier lugar del aparato digestivo e incluso fuera de él. Son originarios de células mesenquimales del tracto gastrointestinal que actúan como marcapasos del tubo digestivo, o de un precursor común de células a lo largo del intestino; desde el punto de vista molecular presentan mutaciones características y recurrentes en los genes KIT (75-80%), PDGFRA (5-8%). Son tumores raros, con una incidencia estimada de 1,5/100.000 habitantes /año. Existe mayor incidencia en hombres con localizaciones de estómago e intestino delgado, estimándose que la incidencia puede llegar a 2/100. TECNOLOGÍAS SANITARIAS ANALIZADAS: Imatinib, Sunitinib, Regorafenib. EFICACIA DE LOS TRATAMIENTOS: La evidencia encontrada indica que: -Imatinib probablemente no disminuye la mortalidad en tumores del estroma gastrointestinal operados. -Imatinib aumenta los efectos adversos grado 3 o 4. -Sunitinib probablemente disminuye la mortalidad en GIST avanzado que progresa tras tratamiento de primera línea con imatinib. -Sunitinib podría no asociarse a efectos adversos severos, pero la certeza de la evidencia es baja. -Regorafenib no disminuye la mortalidad. La certeza de la evidencia es moderada. -Regorafenib aumenta los efectos adversos grado 3 o 4. EVALUACIÓN ECONÓMICA: Existe gran incertidumbre alrededor de los resultados de las evaluaciones económicas del tratamiento con Imatinib en 1ra línea. En general, de los estudios encontrados se puede afirmar que no fueron todos concluyentes con respecto a su perfil de costo efectividad relacionándola directamente con el precio al que se pueda obtener el medicamento. En Chile, existen varias alternativas en el mercado de Imatinib por lo que se podrían lograr mejores precios que los mencionados en los estudios encontrados. Los estudios encontrados para Sunitinib en segunda línea al compararlo con Imatinib en segunda línea concluyen que Sunitinib es más caro y de menor eficacia que Imatinib. Cuando se compara Sunitinib en 2da línea contra tratamiento habitual, los estudios no son concluyentes entre sí, llegando a recomendarlos en algunos países por su relación de costo-efectividad o como en el caso de Canadá, recomendarlo a pesar de no ser costo-efectivo por convertirse en la única alternativa disponible de tratamiento para los que no responden a imatinib. Un solo estudio evaluó la costo-efectividad de Regorafenib en tercera línea luego del fracaso a Imatinib y Sunitinib, concluyendo que se recomienda el tratamiento, siempre y cuando la costoefectividad mejore, principalmente por el costo del medicamento. El impacto presupuestario esperado para el primer año es de $ 4.496 millones para Imatinib, $ 2.256 millones para Sunitinib y $ 4.101 millones para Regorafenib. CONCLUSIÓN: Para dar cumplimiento al artículo 28° del Reglamento que establece el proceso destinado a determinar los diagnósticos y tratamientos de alto costo con Sistema de Protección Financiera, según lo establecido en los artículos 7°y 8° de la ley N°20.850, aprobado por el decreto N°13 del Ministerio de Salud, se concluye que el presente informe de evaluación se considera favorable, de acuerdo a lo establecido en el Título III. de las Evaluaciones Favorables de la Norma Técnica N° 0192 de este mismo ministerio.


Subject(s)
Humans , Antineoplastic Agents/therapeutic use , Gastrointestinal Stromal Tumors/drug therapy , Imatinib Mesylate/therapeutic use , Protein Kinase Inhibitors/therapeutic use , Health Evaluation/economics , Technology Assessment, Biomedical/economics
13.
Säo Paulo med. j ; 133(6): 471-479, Nov.-Dec. 2015. tab
Article in English | LILACS | ID: lil-770158

ABSTRACT

CONTEXT AND OBJECTIVES: Chronic myeloid leukemia (CML) requires strict daily compliance with oral medication and regular blood and bone marrow control tests. The objective was to evaluate CML patients' perceptions about the disease, their access to information regarding the diagnosis, monitoring and treatment, adverse effects and associations of these variables with patients' demographics, region and healthcare access. DESIGN AND SETTING: Prospective cross-sectional study among CML patients registered with the Brazilian Lymphoma and Leukemia Association (ABRALE). METHODS: CML patients receiving treatment through the public healthcare system were interviewed by telephone. RESULTS: Among 1,102 patients interviewed, the symptoms most frequently leading them to seek medical care were weakness or fatigue. One third were diagnosed by means of routine tests. The time that elapsed between first symptoms and seeking medical care was 42.28 ± 154.21 days. Most patients had been tested at least once for Philadelphia chromosome, but 43.2% did not know the results. 64.8% had had polymerase chain reaction testing for the BCR/ABL gene every three months. 47% believed that CML could be controlled, but 33.1% believed that there was no treatment. About 24% reported occasionally stopping their medication. Imatinib was associated with nausea, cramps and muscle pain. Self-reported treatment adherence was significantly associated with normalized blood count, and positively associated with imatinib. CONCLUSIONS: There is a lack of information or understanding about disease monitoring tools among Brazilian CML patients; they are diagnosed quickly and have good access to treatment. Correct comprehension of CML control tools is impaired in Brazilian patients.


CONTEXTO E OBJETIVOS: Leucemia mieloide crônica (CML) exige estrita adesão à medicação oral e ao monitoramento do sangue e da medula. O objetivo foi avaliar percepções de pacientes com leucemia mieloide crônica (LMC) sobre a doença, seu acesso à informação sobre diagnóstico, monitoramento e tratamento, efeitos adversos e a associação destes com dados demográficos, geográficos e de acesso a tratamento. DESENHO E LOCAL: Estudo prospectivo transversal realizado com pacientes de LMC cadastrados na Associação Brasileira de Leucemia e Linfoma (Abrale). MÉTODOS: Pacientes com LMC recebendo tratamento do sistema público de saúde foram entrevistados por telefone. RESULTADOS: Entre os 1.102 pacientes entrevistados, os sintomas mais frequentemente levando à busca de consulta foram fraqueza e fadiga. Um terço foi diagnosticado por exames de rotina. O tempo entre sintoma inicial e procura por ajuda foi de 42,28 ± 154,21 dias. A maioria foi testada pelo menos uma vez para o cromossomo Filadélfia, mas 43,2% não sabiam os resultados. 64,8% fizeram exame de reação em cadeia da polimerase para o gene BCR/ABL a cada três meses. 47% acreditavam que LMC pode ser controlada, mas 33,1% acham que não há tratamento. Cerca de 24% disseram que ocasionalmente interrompem o tratamento. Imatinibe associou-se com náusea, câimbra e dor muscular. Aderência auto-reportada associou-se significativamente com hemograma normal e positivamente com uso de imatinibe. CONCLUSÕES: Falta informação ou compreensão sobre monitoramento entre pacientes com LMC; eles recebem diagnóstico rapidamente e têm bom acesso ao tratamento. A correta compreensão das ferramentas de controle em LMC está prejudicada entre eles.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Male , Middle Aged , Young Adult , Health Knowledge, Attitudes, Practice , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/diagnosis , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/therapy , Antineoplastic Agents/therapeutic use , Brazil , Cross-Sectional Studies , Health Services Accessibility , Imatinib Mesylate/therapeutic use , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics , Medication Adherence , Perception , Philadelphia Chromosome , Prospective Studies , Socioeconomic Factors , Statistics, Nonparametric , Time Factors
14.
Rev. chil. cir ; 67(4): 386-392, ago. 2015. graf, tab
Article in Spanish | LILACS | ID: lil-752858

ABSTRACT

Objective: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract. Surgical resection is the standard treatment for localized primary GISTs. The aim of the study is to present our 5-year surgical experience, as well as the results obtained in terms of survival and disease progression. Material and Method: We conducted a descriptive, retrospective study of primary GISTs treated in our center between 2009-2013. We analyze the most relevant variables, criteria of risk of progression according Fletcher's classification from National Institutes of Health and the Miettinem's classification from the Armed Forces Institute of Pathology, as well as analysis of relapse-free survival (RFS) with Kaplan-Meier survival curves. Results: We present a series of 30 patients. Mean age 65 years (40-84 years). The most common location was the stomach (n = 14, 46.6 percent). The surgery was R0 in 23 cases of 30. The mean tumor diameter was 5.3 cm (0.5-18). 14 patients received adjuvant treatment with Imatinib. After an average follow-up of 31.2 months (6-62 months), it was found relapse in 4 patients, progression and exitus in 1, exitus in 3 and exitus in the immediate postoperative period in 1. RFS at one year was 96.7 percent, and 89.2 percent at 4 years. Mean survival time was 56.2 months (95 percent CI 51.8-60.6). Conclusion: The recommended attitude after radical surgery is follow-up. In selected patients with risk of relapse, adjuvant treatment with Imatinib delays the progression of the disease and increases the survival.


Objetivo: Los tumores del estroma gastrointestinal son las neoplasias mesenquimales más frecuentes del tubo digestivo. La resección quirúrgica es el tratamiento estándar en los GISTs primarios localizados. El objetivo del estudio es presentar nuestra experiencia quirúrgica en 5 años, así como los resultados obtenidos en cuanto supervivencia y progresión de la enfermedad. Material y Método: Serie de casos, estudio observacional descriptivo retrospectivo, que analiza los resultados obtenidos en cuanto al tratamiento quirúrgico de GIST primarios sometidos a resección quirúrgica en nuestro centro entre 2009-2013. Todas las intervenciones fueron realizadas por personal del Staff y dentro de los protocolos de las unidades de cirugía hepato-biliar y esófago-gástrica. Se analizan las variables de mayor relevancia, criterios de riesgo de progresión según la clasificación de Fletcher del National Institutes of Health y la clasificación de Miettinem del Armed Forces Institute of Pathology, así como análisis de la supervivencia libre de recaída (SLR) con curvas de Kaplan-Meier. Resultados: Presentamos una serie de 30 pacientes. Edad media de 65 años (40-84 años). La localización más frecuente fue estómago (n = 14, 46,6 por ciento). La cirugía fue R0 en 23 de los 30 pacientes. El diámetro tumoral medio fue de 5,3 cm (0,5-18, con una mediana de 4 cm. Catorce pacientes recibieron tratamiento adyuvante con Imatinib. Tras un seguimiento medio 31,2 meses (6-62 meses), se detectó recaída en 4 pacientes, progresión y exitus en 1, exitus en 3 y exitus en el postoperatorio inmediato en 1. La SLR al año fue del 96,7 por ciento, siendo del 89,2 por ciento a los 4 años. El tiempo medio de supervivencia fue de 56,2 meses (IC 95 por ciento 51,8-60,6). Conclusiones: La actitud recomendada tras una cirugía radical es el seguimiento. En pacientes seleccionados con riesgo de recaída el tratamiento adyuvante con Imatinib retrasa la progresión de la enfermedad y aumenta la supervivencia.


Subject(s)
Humans , Male , Adult , Female , Middle Aged , Aged, 80 and over , Gastrointestinal Stromal Tumors/surgery , Gastrointestinal Stromal Tumors/pathology , Chemotherapy, Adjuvant , Clinical Evolution , Disease-Free Survival , Epidemiology, Descriptive , Imatinib Mesylate/therapeutic use , Neoplasm Recurrence, Local , Retrospective Studies , Gastrointestinal Stromal Tumors/drug therapy
17.
Maroc Medical. 2011; 33 (3): 216-224
in French | IMEMR | ID: emr-162268

ABSTRACT

Chronic myeloid leukemia is a hematological malignancy in the group of myeloproliferative syndromes. It is characterized by the presence of an acquired genetic abnormality at the hematopoietic stem cells, the Philadelphia chromosome. Inhibitors of tyrosine kinase, whose leader is imatinib, has profoundly changed the therapeutic management and prognosis of this malignancy. The failure of imatinib treatment is due to resistance mechanisms that are not all fully characterized. However, cross and multiple resistance remain difficult to treat and require a better understanding of their mechanisms to overcome residual disease in the near future. The persistence of a long term residual disease associated with the presence of quiescent leukemic cells, and the occurrence of relapse led to the development of second and third generation inhibitors tyrosine kinase and the combination of these inhibitors with therapeutic immunomodulators such as interferon alpha, or vaccination protocols are discussed. The purpose of this review is to update on the molecular abnormalities found in chronic myeloid leukemia with emphasis on mechanisms of imatinib resistance and the current therapeutic strategy in the era of new generations of inhibitors of tyrosine kinase


Subject(s)
Humans , Protein-Tyrosine Kinases/antagonists & inhibitors , Imatinib Mesylate/therapeutic use
SELECTION OF CITATIONS
SEARCH DETAIL