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1.
Hematol Oncol ; 42(1): e3216, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37772620

RESUMEN

Chronic lymphocytic leukemia (CLL) therapies differ in efficacy, side effects, route, frequency, and duration of administration. We assessed patient preferences for treatment attributes and evaluated associations with disease stage, treatment line, and socio-demographic characteristics in a cross sectional, observational study conducted at 16 Italian hematology centers. Study visits occurred between February and July 2020; 401 adult patients with CLL (201 Watch and Wait (W&W), 200 treated) participated in a discrete choice experiment (DCE), composed of 8 choices between pairs of treatment profiles with different levels of 5 attributes of currently available CLL treatments (length of response, route and duration of administration, risk of side effects including diarrhea, infections, or organ damage). Health-related quality of life was assessed with the EQ-5D-5L, EORTC QLQ-C30 and QLQ CLL-16. Previously treated patients had longer disease duration (7 vs. 5 years), higher prevalence of serious comorbidities (45.5% vs. 36.2%) and high-risk molecular markers (unmutated IGHV 55.6% vs. 17.1%; TP53 mutation 15.2% vs. 4.0%). Health-related quality of life scores were similar between groups. In the DCE, W&W patients rated "possible occurrence of infections" highest (relative importance [RI] = 36.2%), followed by "treatment and relevant duration" (RI = 28.0%) and "progression-free survival (PFS)" (RI = 16.9%). Previously treated patients rated "treatment and relevant duration" highest (RI = 33.3%), followed by "possible occurrence of infections" (RI = 28.8%), "possible occurrence of organ damage" (RI = 19.4%), and "PFS" (RI = 9.8%). Concern over infection was rated highest overall; unexpectedly PFS was not among the most important criteria in either group, suggesting that the first COVID-19 pandemic wave may have influenced patient preferences and concerns about CLL therapy options.


Asunto(s)
Leucemia Linfocítica Crónica de Células B , Adulto , Humanos , Leucemia Linfocítica Crónica de Células B/tratamiento farmacológico , Leucemia Linfocítica Crónica de Células B/genética , Prioridad del Paciente , Calidad de Vida , Estudios Transversales , Pandemias
2.
Expert Rev Hematol ; 16(3): 181-190, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36876439

RESUMEN

INTRODUCTION: Age has historically been considered the main criterion to determine eligibility for intensive chemotherapy in patients with acute myeloid leukemia (AML), but age alone can no longer be considered an absolute indicator in determining which patients should be defined as unfit. Assessment of fitness for a given treatment today serves an important role in tailoring therapeutic options. AREAS COVERED: This review examines the main options used in real life to define eligibility for intensive and nonintensive chemotherapy in patients with AML, with a main focus on the Italian SIE/SIES/GITMO Consensus Criteria. Other published real-life experiences are also reviewed, analyzing the correlation between these criteria and short-term mortality, and thus expected outcomes. EXPERT OPINION: Assessment of fitness is mandatory at diagnosis to tailor treatment to the greatest degree possible, evaluating the patient's individual profile. This is especially relevant when considering the availability of newer, less toxic therapeutic regimens, which have shown promising results in patients with AML who are older or considered unfit for intensive treatment. Fitness assessment is now a fundamental part of AML management and a critical step that can potentially influence outcomes and not just predict them.


In patients with acute myeloid leukemia (AML), age has generally been considered as the main factor to determine if intensive chemotherapy can be carried out (fitness). However, this has been gradually changing in recent years. In addition to age, comorbidities and overall performance status are also important in determining if the patient should undergo intensive chemotherapy and have an important role in tailoring therapeutic options. Consensus criteria to define eligibility for intensive and nonintensive chemotherapy in patients with AML have been proposed, which have been shown to correlate well with expected outcomes. Today, given the evolution of the treatment armamentarium, assessment of a patient's 'fitness' is compulsory to select the most appropriate treatment for each patient.


Asunto(s)
Antineoplásicos , Leucemia Mieloide Aguda , Humanos , Antineoplásicos/uso terapéutico , Leucemia Mieloide Aguda/terapia , Leucemia Mieloide Aguda/tratamiento farmacológico
3.
Hematol Oncol ; 41(4): 621-630, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36680368

RESUMEN

Chronic lymphocytic leukemia (CLL) is the most common form of adult leukemia in the western world. In Italy, venetoclax was approved for use in patients with CLL as monotherapy in 2017 and in combinations in 2019. As a result of this delayed approval, there are relatively few real-world studies from Italian clinical practice and much of the data are in heavily pretreated patients. We have collected the available studies in Italian routine practice. Three studies confirm the effectiveness and tolerability of this agent in patients with relapsed/refractory CLL and high-risk disease characteristics, many of whom had received prior B-cell receptor signaling treatment. Addition of rituximab to venetoclax produced more complete responses in patients with relapsed/refractory CLL, while higher disease burden and progression while receiving a prior Bruton's tyrosine kinase inhibitor were both associated with poorer outcomes in patients treated with venetoclax. Venetoclax was well-tolerated with low discontinuation rates. No studies of venetoclax plus obinutuzumab for the first-line treatment of patients with CLL were available due to the short time since approval in Italy. Several cohorts addressed the impact of COVID-19 on patient management and outcomes, suggesting that treated patients and those in clinical observation had similar rates of COVID-19-related hospital admission, intensive care unit admission, and mortality. Overall, the responses and tolerance to venetoclax observed in the Italian real-world setting confirm the tolerability and effectiveness of venetoclax regimens in high-risk patients.


Asunto(s)
Antineoplásicos , COVID-19 , Leucemia Linfocítica Crónica de Células B , Linfoma de Células B , Adulto , Humanos , Leucemia Linfocítica Crónica de Células B/tratamiento farmacológico , Antineoplásicos/uso terapéutico , COVID-19/etiología , Rituximab/efectos adversos , Linfoma de Células B/tratamiento farmacológico , Recurrencia , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos
4.
Br J Haematol ; 172(4): 554-60, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26684545

RESUMEN

This study aimed to review the clinical features and outcome of 53 patients with solitary plasmacytoma managed at our Institution between 1976 and 2012. Thirty-five patients had bone solitary plasmacytoma and 18 extramedullary solitary plasmacytoma. Tumour sizes were larger in patients with bone involvement (P = 0·003). Treatment consisted of local radiotherapy (n = 26), radiotherapy + chemotherapy (n = 15), surgery (n = 4) and chemotherapy (n = 8); the local control rate was 94·3%. Progression to multiple myeloma was recorded in 20/35 (57·1%) patients with bone involvement and in 1/18 (5·5%) patients with extramedullary disease (P = 0·0003). The 5-year overall survival (OS) rate was 78·4%; bone solitary plasmacytoma patients had a significantly worse OS (71·9% vs. 88·2%, respectively; P = 0·029) and 5-year progression-free survival (PFS; 53·0% vs. 88·5%; P = 0·0003) compared to extramedullary solitary plasmacytoma patients. On univariate analysis, bone disease and size (≥5 cm) impacted negatively on PFS (P = 0·0027 and P = 0·04, respectively). Bone disease also affected OS (P = 0·04). In multivariate analysis bone location was the only independent prognostic factor for PFS (P = 0·0041) and OS (P = 0·021). Patients with bone solitary plasmacytoma have a significantly worse prognosis than extramedullary solitary plasmacytoma cases.


Asunto(s)
Neoplasias Óseas/terapia , Plasmacitoma/terapia , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos/uso terapéutico , Neoplasias Óseas/mortalidad , Neoplasias Óseas/patología , Terapia Combinada , Progresión de la Enfermedad , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mieloma Múltiple/etiología , Mieloma Múltiple/mortalidad , Mieloma Múltiple/patología , Plasmacitoma/mortalidad , Plasmacitoma/patología , Pronóstico
6.
Hematol Oncol ; 33(1): 48-51, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25950027

RESUMEN

Lenalidomide induces in patients with myelodysplastic syndrome (MDS) and del(5q) erythroid and cytogenetic response rates as high as 75% and 50%, respectively. It is still unclear, however, how long lenalidomide treatment should be continued and whether or not the drug could be interrupted. To assess the feasibility of lenalidomide discontinuation, we revised a cohort of 16 low-risk MDS patients with del(5q) treated at our institute in a phase II multicentric Italian study. Among the 12 responding patients, four discontinued lenalidomide while in complete response. All four patients needed during treatment a permanent lenalidomide reduction from 10 to 5 mg/day because of haematological toxicity (three patients) or grade 3 muscular and bone pain (one patient). At lenalidomide discontinuation after 16, 20, 27 and 20 months from the start, respectively, all four patients were in complete hematologic response and three forth in complete cytogenetic response. Three patients are still in response after 36, 30 and 20 months from lenalidomide discontinuation, respectively: The remaining patient relapsed after 20 months, and she is now receiving a new course of lenalidomide. In conclusion, long-lasting remissions are achievable in MDS patients with del(5q) in complete response after lenalidomide discontinuation.


Asunto(s)
Deleción Cromosómica , Cromosomas Humanos Par 5/genética , Síndromes Mielodisplásicos/tratamiento farmacológico , Talidomida/análogos & derivados , Anciano , Inhibidores de la Angiogénesis/efectos adversos , Inhibidores de la Angiogénesis/uso terapéutico , Femenino , Enfermedades Hematológicas/inducido químicamente , Humanos , Lenalidomida , Persona de Mediana Edad , Síndromes Mielodisplásicos/genética , Dolor/inducido químicamente , Inducción de Remisión , Talidomida/efectos adversos , Talidomida/uso terapéutico , Factores de Tiempo , Resultado del Tratamiento
7.
J Diabetes ; 7(4): 493-6, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25060764

RESUMEN

BACKGROUND: The aim of the present study was to assess the role of a concomitant type 2 diabetes as a potentially negative factor in the management of low-risk myelodysplastic syndrome (MDS) patients treated with high-dose (40,000 UI s.c. 2 times/week) recombinant human erythropoietin (EPO) alpha (rHuEPO alpha). METHODS: One hundred and forty patients (M/F 69/71, median age 76, interquartile range [IR] 68-81) were included in the analysis: 27/140 (19.2%) had a concomitant type 2 diabetes. RESULTS: No difference was reported between patients with and without diabetes as to the grade of anemia, the EPO endogenous levels and the need for transfusional requirement at baseline. Erythroid response was achieved in 79/140 patients (56.4%): factors associated with response were lower EPO levels (P < 0.0001), higher baseline Hb levels (P < 0.0001) and transfusion independence (P < 0.0001). Diabetes was not predictive of response: 17/27 (62.9%) patients with diabetes were responsive to high-dose EPO compared with 62/113 (54.8%) patients without diabetes (P = 0.446). This was confirmed in multivariate analysis, controlling for the effects of Hb levels, transfusion-dependence and serum EPO levels. No difference was observed in relapse rate, response duration and OS between patients with and without diabetes. CONCLUSIONS: Concomitant type 2 diabetes was not a major concern in the management of MDS patients.


Asunto(s)
Diabetes Mellitus Tipo 2/complicaciones , Eritropoyetina/uso terapéutico , Síndromes Mielodisplásicos/tratamiento farmacológico , Anciano , Femenino , Humanos , Masculino , Síndromes Mielodisplásicos/complicaciones
8.
Ann Hematol ; 94(2): 195-200, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25186786

RESUMEN

All-trans retinoic acid (ATRA) has made acute promyelocytic leukemia (APL) a very curable disease also in patients aged >60 years; however, there are only few case reports in very elderly APL patients. To address this issue, we reviewed treatment results in 13 patients aged >70 years with newly diagnosed APL followed at our institution from January 1991 to December 2008. According to Sanz score, seven patients were at low risk, five at intermediate risk, and one at high risk. Induction therapy consisted of ATRA + idarubicin in nine patients (3/9 with reduced idarubicin dosage) and ATRA alone in four patients; in this latter group, however, 2/4 needed to add chemotherapy (CHT) due to hyperleukocytosis during ATRA treatment. All patients achieved both morphological and molecular complete remission (CR) after a median time of 51 [interquartile range (IR) 43-55] and 114 (IR 74-155) days, respectively. Infective complications were observed in 10/13 patients, APL differentiation syndrome in 3/13 patients. Twelve patients received consolidation therapy, followed by maintenance treatment in nine patients. Five patients relapsed after 7, 8, 11, 35, and 56 months. At present, seven patients are still alive, five died due to disease progression (four) or senectus while in CR (one), and one was lost to follow-up while in CR. The 5-year event-free survival was 56.1 % (95 % CI, 26.0-86.2); the 5-year overall survival (OS) was 64.5 % (95 % CI, 35.6-93.4). ATRA-based treatment of APL is safe and effective also in very elderly patients, with long-lasting disease-free OS.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Leucemia Promielocítica Aguda/tratamiento farmacológico , Anciano , Anciano de 80 o más Años , Citarabina/administración & dosificación , Etopósido/administración & dosificación , Femenino , Estudios de Seguimiento , Humanos , Idarrubicina/administración & dosificación , Interferón-alfa/administración & dosificación , Masculino , Mercaptopurina/administración & dosificación , Mitoxantrona/administración & dosificación , Inducción de Remisión , Análisis de Supervivencia , Factores de Tiempo , Resultado del Tratamiento , Tretinoina/administración & dosificación
9.
Am J Hematol ; 90(2): 105-8, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25349084

RESUMEN

In patients with chronic myeloid leukemia (CML) responsive to imatinib, it is still unknown whether the long-lasting treatment could induce the appearance of a persistent/late chronic anemia. To highlight this issue, we revised 128 patients with CML (M/F 64/64, median age at diagnosis 56.9 years, interquartile range 43.0-69.3) treated at our Institution with 1st line imatinib for at least 36 months and in stable complete cytogenetic response. At the 36th month of imatinib, a chronic anemia (Hb < 12 g/dl for > 6 months) was present in 38/128 patients (29.6%): the anemia was moderate (Hb > 8 ≤ 10 g/dl) in 12 patients (9.3%) and mild (Hb > 10 < 12 g/dl) in 26 patients (20.3%). All patients with persistent/late chronic anemia had a low reticulocyte count and 8/38 a condition of iron deficiency without clinical and instrumental signs of chronic blood loss. Four out of 38 patients (10.5%) needed red cell transfusions during the follow-up. At a landmark analysis from the 36th month of imatinib treatment, cumulative 4-year overall survival (OS) for patients with chronic anemia was 94.4% (CI 95% 83.8-100) compared to 93.5% (CI 95% 87.2-99.8) for patients without chronic anemia (P = 0.617). In conclusion, the occurrence of a late chronic anemia during long-lasting treatment with imatinib has been observed in about 30% of our responsive patients: its occurrence does not seem to affect OS, but its real impact should be evaluated on a larger cohort of patients.


Asunto(s)
Anemia/tratamiento farmacológico , Antineoplásicos/uso terapéutico , Benzamidas/uso terapéutico , Leucemia Mielógena Crónica BCR-ABL Positiva/tratamiento farmacológico , Piperazinas/uso terapéutico , Pirimidinas/uso terapéutico , Adulto , Anciano , Anemia/complicaciones , Anemia/patología , Enfermedad Crónica , Esquema de Medicación , Femenino , Estudios de Seguimiento , Humanos , Mesilato de Imatinib , Leucemia Mielógena Crónica BCR-ABL Positiva/complicaciones , Leucemia Mielógena Crónica BCR-ABL Positiva/patología , Masculino , Persona de Mediana Edad , Inducción de Remisión , Reticulocitos/patología , Índice de Severidad de la Enfermedad , Factores Sexuales , Análisis de Supervivencia
10.
Patient Prefer Adherence ; 8: 939-46, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25045252

RESUMEN

The use of novel agents such as thalidomide, lenalidomide, and bortezomib has considerably improved the outcome of multiple myeloma patients. Besides greater biological activity, these drugs unfortunately have also been associated with greater toxicity. To evaluate the positive effect on the quality of life of patients, driven by both the tolerability and antimyeloma activity of bortezomib, we analyzed data that have been published concerning different strategies used to improve its tolerability as once weekly and/or subcutaneous administration.

11.
Acta Haematol ; 129(2): 126-34, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23207803

RESUMEN

AIM: To address the incidence and the prognostic role of a very early standard complete cytogenetic response (CCyR) or all Ph- metaphases (MET-, when <20 cells were evaluable). METHODS: We revised 182 chronic phase chronic myelogenous leukemia patients treated with frontline imatinib (IM) at two institutions from June 2002 to June 2011. RESULTS: After 3 months of treatment, 138 patients (75.8%) achieved CCyR/MET- while 44 patients (24.2%) still presented Ph+ metaphases (MET+) (<33%, 24 patients; ≥33%, 20 patients). On univariate analysis, palpable spleen enlargement (p < 0.001), WBC count >100.0 × 10(9)/l at onset (p < 0.001), and male gender (p = 0.019) had a negative impact on achievement of CCyR/MET- at 3 months. Among patients with CCyR/MET- after 3 months, there were 15 failures (10.8%) compared to 21 (47.7%) among patients with MET+ (p < 0.001). The 5-year overall survival was 97.0% in patients CCyR/MET- at 3 months and 91.8% in patients MET+ at 3 months (p = 0.277); the 5-year progression-free survival was 88.2% in patients CCyR/MET- at 3 months and 48.4% in patients MET+ at 3 months (p < 0.001). CONCLUSIONS: The achievement of CCyR/MET- at 3 months seems to have prognostic relevance and could be a very early and useful indicator of an excellent response to IM beyond European LeukemiaNet guidelines.


Asunto(s)
Leucemia Mielógena Crónica BCR-ABL Positiva/tratamiento farmacológico , Cromosoma Filadelfia/efectos de los fármacos , Piperazinas/uso terapéutico , Inhibidores de Proteínas Quinasas/uso terapéutico , Pirimidinas/uso terapéutico , Anciano , Benzamidas , Supervivencia sin Enfermedad , Femenino , Humanos , Mesilato de Imatinib , Leucemia Mielógena Crónica BCR-ABL Positiva/genética , Masculino , Metafase/efectos de los fármacos , Persona de Mediana Edad , Pronóstico , Proteínas Tirosina Quinasas/antagonistas & inhibidores
13.
Leuk Lymphoma ; 53(12): 2439-43, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22647078

RESUMEN

Fewer than 10% of patients with myelodysplastic syndromes (MDS) are younger than 50 years. A series of 91 younger patients (median age 44 years with female prevalence) are reported and compared with elderly patients. Frequent karyotypic changes were trisomy 8 (9.8%) and monosomy 7 (5%). Twenty-three patients had occupational exposure to potential mutagens (benzene and solvents), with a male predominance, higher frequency of refractory cytopenia with multilineage dysplasia (RCMD) (52%) and higher frequency of monosomy 7 (21.7%). At a median follow-up of 72 months, 22 patients (24%) evolved to acute leukemia, with higher frequency being observed among the exposed cohort (39% vs. 19% non-exposed). Unfavorable factors for overall survival were: age > 40 years, > 5% of blasts, trilinear bone marrow involvement and intermediate-high World Health Organization Prognostic Scoring System (WPSS) risk. The present results suggest that younger MDS could be identified as a distinct subset. For patients belonging to the low/intermediate-I risk group, due to a low transformation rate, aggressive approaches should rarely be recommended.


Asunto(s)
Aberraciones Cromosómicas , Síndromes Mielodisplásicos/genética , Enfermedades Profesionales/genética , Exposición Profesional , Enfermedad Aguda , Adulto , Anciano , Análisis de Varianza , Benceno/envenenamiento , Transformación Celular Neoplásica/efectos de los fármacos , Transformación Celular Neoplásica/genética , Cromosomas Humanos Par 7/genética , Cromosomas Humanos Par 8/genética , Progresión de la Enfermedad , Femenino , Humanos , Leucemia/genética , Leucemia/patología , Masculino , Persona de Mediana Edad , Monosomía , Síndromes Mielodisplásicos/inducido químicamente , Síndromes Mielodisplásicos/patología , Enfermedades Profesionales/inducido químicamente , Enfermedades Profesionales/patología , Pronóstico , Solventes/envenenamiento , Análisis de Supervivencia , Trisomía , Adulto Joven
14.
Ann Hematol ; 91(9): 1345-9, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22569854

RESUMEN

We here describe a single-institution experience on 40 patients with myelodysplastic syndromes (MDS) consecutively treated with deferasirox at the dose of 10-30 mg/kg/day according to Consensus Guidelines on Iron Chelation Therapy, outside of clinical trials. Serum ferritin (SF) was measured monthly, and safety assessment included monitoring of adverse events during treatment and of liver and renal parameters. Median SF at baseline of the 40 patients was 2,878 ng/ml. Median dose of deferasirox was 1,125 mg/day. At a median follow-up of 12 months of treatment, there was a significant reduction in SF from baseline, the median value being 1,400 ng/ml (p = 0.001). Interruptions due to toxicity were recorded in 40 % of patients: most common adverse events were diarrhoea (five patients, 12.5 %) and skin rash (four patients, 10 %). Seven patients had increased serum creatinine values >33 % above baseline, but there were no progressive increases. Four patients (three refractory anaemia and one refractory anaemia with excess blasts type 1) had a reduction of transfusion requirement (from a median of 5 to 1 unit/month) according to International Working Group 2006 criteria, with mean Hb value increasing from 8.5 to 10.5 g/dl, and mean Hb improvement being 2 g/dl (p = 0.02). No increased toxicity was noted when deferasirox was used concomitantly with azacitidine (eight patients who were intermediate 2 International Prognostic Scoring System risk) or lenalidomide (two patients with del(5q)). In conclusion, the oral iron chelator deferasirox is effective and safe when used in MDS patients with transfusion requirement, also if administered concomitantly with other drugs.


Asunto(s)
Benzoatos/uso terapéutico , Quelantes/uso terapéutico , Síndromes Mielodisplásicos/tratamiento farmacológico , Triazoles/uso terapéutico , Adulto , Anciano , Anciano de 80 o más Años , Antimetabolitos/uso terapéutico , Azacitidina/uso terapéutico , Benzoatos/administración & dosificación , Benzoatos/efectos adversos , Quelantes/administración & dosificación , Quelantes/efectos adversos , Deferasirox , Erupciones por Medicamentos/etiología , Evaluación de Medicamentos , Quimioterapia Combinada , Femenino , Estudios de Seguimiento , Enfermedades Gastrointestinales/inducido químicamente , Hematínicos/efectos adversos , Hematínicos/uso terapéutico , Humanos , Sobrecarga de Hierro/prevención & control , Enfermedades Renales/inducido químicamente , Lenalidomida , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Talidomida/análogos & derivados , Talidomida/uso terapéutico , Resultado del Tratamiento , Triazoles/administración & dosificación , Triazoles/efectos adversos
20.
J Exp Clin Cancer Res ; 28: 39, 2009 Mar 19.
Artículo en Inglés | MEDLINE | ID: mdl-19298651

RESUMEN

Studies on activated cell-signaling pathways responsible for neoplastic transformation are numerous in solid tumors and in adult leukemias. Despite of positive results in the evolution of pediatric hematopoietic neoplasias, there are some high-risk subtypes at worse prognosis. The aim of this study was to asses the expression and activation status of crucial proteins involved in cell-signaling pathways in order to identify molecular alterations responsible for the proliferation and/or escape from apoptosis of leukemic blasts. The quantitative and qualitative expression and activation of Erk-1, c-Jun, Caspase8, and Gadd45a was analyzed, by immunocytochemical (ICC) and western blotting methods, in bone marrow blasts of 72 patients affected by acute myeloid leukemia (AML), T-cell acute lymphoblastic leukemia (ALL) and stage IV non-Hodgkin Lymphoma (NHL). We found an upregulation of Erk-1, Caspase8, c-Jun, and Gadd45a proteins with a constitutive activation in 95.8%, 91.7%, 86.2%, 83.4% of analyzed specimens, respectively. It is worth noting that all AML patients showed an upregulation of all proteins studied and the high expression of GADD45a was associated to the lowest DFS median (p = 0.04). On univariate analysis, only Erk-1 phosphorylation status was found to be correlated with a significantly shorter 5-years DFS in all disease subgroups (p = 0.033) and the lowest DFS median in ALL/NHL subgroup (p = 0.04). Moreover, the simultaneous activation of multiple kinases, as we found for c-Jun and Erk-1 (r = 0.26; p = 0.025), might synergistically enhance survival and proliferation potential of leukemic cells. These results demonstrate an involvement of these proteins in survival of blast cells and, consequently, on relapse percentages of the different subgroups of patients.


Asunto(s)
Biomarcadores de Tumor/metabolismo , Proteínas de Ciclo Celular/metabolismo , Trastornos Linfoproliferativos/metabolismo , Trastornos Linfoproliferativos/patología , Proteína Quinasa 3 Activada por Mitógenos/metabolismo , Proteínas Nucleares/metabolismo , Adolescente , Caspasa 8/metabolismo , Niño , Preescolar , Activación Enzimática , Femenino , Humanos , Lactante , Proteínas Quinasas JNK Activadas por Mitógenos/metabolismo , Trastornos Linfoproliferativos/clasificación , Trastornos Linfoproliferativos/terapia , Masculino , Proteína Quinasa 1 Activada por Mitógenos/metabolismo , Fosforilación , Pronóstico , Factores de Riesgo , Resultado del Tratamiento
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