Predictors of thrombosis and bleeding in 1613 myelofibrosis patients from the Spanish Registry of Myelofibrosis.

Available data have proved insufficient to develop consensus recommendations on the prevention of thrombosis and bleeding in myelofibrosis (MF). We evaluated the incidence and risk factors of vascular complications in 1613 patients from the Spanish Myelofibrosis Registry. Over a total of 6981 patient-years at risk, 6.4% of the study population had at least one thrombotic event after MF diagnosis, amounting to an incidence rate of 1.65 per 100 patient-years. Prior history of thrombosis, the JAK2 mutation, and the intermediate-2/high-risk International Prognostic Scoring System (IPSS) categories conferred an increased thrombotic risk after adjustment for the risk-modifying effect of anti-thrombotic and cytoreductive treatments. History of thrombosis and the JAK2 mutation allowed us to pinpoint a group of patients at higher risk of early thrombosis. No decreased incidence of thrombosis was observed while patients were on anti-thrombotic or cytoreductive treatment. An increased risk of venous thrombosis was found during treatment with immunomodulatory agents. A total of 5.3% of patients had at least one episode of major bleeding, resulting in an incidence rate of 1.5 events per 100 patient-years. Patients in the intermediate-2/high-risk IPSS categories treated with anti-coagulants had an almost sevenfold increased risk of major bleeding. These findings should prove useful for guiding decision-making in clinical practice.

Treatment patterns and outcomes in real-world transplant-ineligible patients newly diagnosed with multiple myeloma.

Despite the significant proportion of older patients with newly diagnosed multiple myeloma (MM), most clinical trials driving therapeutic decisions in routine practice include younger and presumably healthier patients than those in the real world. Furthermore, longitudinal studies suggest that elderly, transplant-ineligible patients with MM are not benefitting enough from new anti-MM agents. We retrospectively analyzed the profile of and treatment patterns and outcomes in 675 transplant-ineligible patients with MM who started frontline therapy in routine practice. The mean (SD) age was 75.6 (6.7) years; 152 (47.4%) had Eastern Cooperative Oncology Group performance status (ECOG PS) 2-4, and 73 (25.1%) had high cytogenetic risk. The most frequent frontline therapy was non-VMP bortezomib-based regimens (n=207; 30.7%), which were more frequent among patients with ECOG PS 0/1 and higher risk (e.g., international staging system (ISS) stage III, severely impaired glomerular filtrate rate (GFR), high lactate dehydrogenase (LDH), and high-risk cytogenetics); 185 patients (27.4%) started an attenuated (lite) VMP regimen, and 159 (23.6%) a VMP (VISTA) regimen. Median progression-free survival and overall survival (OS) were 15.3 months (95%CI 14.0-16.9) and 33.5 months (95%CI 29.1-37.2), respectively; 405 patients (78.2%) achieved partial response or better. Age, ECOG PS, ISS stage, serum LDH, GFR, cytogenetic risk, and treatment regimen significantly influenced OS. In this study, a remarkable proportion of transplant-ineligible patients with MM were older, frontline regimens were highly heterogeneous, and patients at higher risk often received less efficacious combinations. These findings suggest that clinicians have limited objective criteria for therapeutic decisions for this patient group.

Ibrutinib in Combination with R-GemOx in Patients with Relapsed or Refractory Diffuse Large B-cell Lymphoma of Nongerminal Center B-cell-like Type: Phase II Clinical Trial of the Spanish GELTAMO Group.

PURPOSE: This phase II clinical trial evaluated the combination of ibrutinib with rituximab, gemcitabine, and oxaliplatin (R-GemOx) in patients with nongerminal center B-cell-like (non-GCB) diffuse large B-cell lymphoma (DLBCL). PATIENTS AND METHODS: The IBDCL trial (NCT02692248) included patients with histologic diagnosis of non-GCB DLBCL with relapsed or refractory disease and non-candidates for stem-cell transplantation. Patients received an induction treatment consisting of six or eight cycles of R-GemOx at standard doses every 2 weeks, in combination with ibrutinib (560 mg daily), followed by a maintenance treatment with ibrutinib for a maximum of 2 years. The primary objective was to evaluate the overall response rate after four cycles. RESULTS: Sixty-four patients were included, 72% of them refractory to the last regimen. The overall response rate and complete remission rate after the fourth cycle were 53% [95% confidence interval (CI), 41-65] and 34% (95% CI, 24-46), respectively. Twenty-four (37%) patients started maintenance, and 7 (11%) completed the planned 2 years. After a median follow-up of 29.7 months (range: 0.4-48.6), the estimated 2-year progression-free survival and overall survival were 18% (95% CI, 8-28) and 26% (95% CI, 14-37), respectively. The most common grade ≥3 treatment-related adverse events were thrombocytopenia (44%), neutropenia (30%), and anemia (14%). Grade ≥3 infectious and cardiovascular treatment-related adverse events were reported in 6 (9%) and 1 (2%) patient, respectively. CONCLUSIONS: Ibrutinib in combination with R-GemOx, followed by ibrutinib maintenance, demonstrated encouraging antitumor activity with durable responses and a manageable toxicity in patients with non-GCB DLBCL.

Machine Learning Improves Risk Stratification in Myelofibrosis: An Analysis of the Spanish Registry of Myelofibrosis.

Myelofibrosis (MF) is a myeloproliferative neoplasm (MPN) with heterogeneous clinical course. Allogeneic hematopoietic cell transplantation remains the only curative therapy, but its morbidity and mortality require careful candidate selection. Therefore, accurate disease risk prognostication is critical for treatment decision-making. We obtained registry data from patients diagnosed with MF in 60 Spanish institutions (N = 1386). These were randomly divided into a training set (80%) and a test set (20%). A machine learning (ML) technique (random forest) was used to model overall survival (OS) and leukemia-free survival (LFS) in the training set, and the results were validated in the test set. We derived the AIPSS-MF (Artificial Intelligence Prognostic Scoring System for Myelofibrosis) model, which was based on 8 clinical variables at diagnosis and achieved high accuracy in predicting OS (training set c-index, 0.750; test set c-index, 0.744) and LFS (training set c-index, 0.697; test set c-index, 0.703). No improvement was obtained with the inclusion of MPN driver mutations in the model. We were unable to adequately assess the potential benefit of including adverse cytogenetics or high-risk mutations due to the lack of these data in many patients. AIPSS-MF was superior to the IPSS regardless of MF subtype and age range and outperformed the MYSEC-PM in patients with secondary MF. In conclusion, we have developed a prediction model based exclusively on clinical variables that provides individualized prognostic estimates in patients with primary and secondary MF. The use of AIPSS-MF in combination with predictive models that incorporate genetic information may improve disease risk stratification.

Cost-minimisation analysis of chronic lymphocytic leukemia in Spain in the era of oral targeted therapies.

OBJECTIVE: Chronic lymphocytic leukaemia places a considerable economic burden on the Spanish National Health System. This study estimated the direct costs of chronic lymphocytic leukaemia oral targeted therapies from 2011 to 2025, inclusive, in a scenario with fixed  treatment oral targeted therapies and in a scenario without them. Method: The clinical course of adult chronic lymphocytic leukaemia patients  was represented by a Markov model with four health states: watchful waiting,  first-line treatment, relapse, and death. The treatment pattern was defined  according to patient type by disease status or situation, age, presence or  absence of deletion in the short arm of chromosome 17, immunoglobulin heavy  chain mutation status, and year of treatment. The treatment algorithm  was simulated from 2011 to 2025, and included therapies funded by the  Spanish National Health System and their use in routine clinical practice,  validated by leading experts. A single treatment option was assumed for each  type of patient and time period (the most widely option used at each time  point). Direct costs were included: pharmacological, administration, tests  performed, routine visits, hospitalizations, and adverse events. Results: From 2011 to 2025, there would be a mean annual chronic  ymphocytic leukaemia prevalence of 16,436 patients in the scenario without  fixed treatment oral targeted therapies and 16,413 in the scenario  with  in the scenario without fixed treatment oral targeted therapies would be €4,676.7 million and in the scenario with fixed treatment oral targeted therapies they would be €4,111.8 million. Thus, the introduction of fixed treatment oral targeted therapies would entail a saving of €564.9 million (12.1% of the total cost of care of chronic lymphocytic leukaemia patients during the period assessed). In this period, the total cost per patient would decrease from €266,019 in the scenario without fixed treatment oral targeted therapies to €236,852 in the scenario with fixed treatment oral targeted therapies, representing a saving of €29,167 per patient. CONCLUSIONS: This study estimates that, between 2011 and 2025, the introduction of fixed treatment oral targeted therapies for the treatment of chronic lymphocytic leukaemia would entail €564.9 million cost savings for  the Spanish National Health System (12.1% of the total cost of care of chronic  lymphocytic leukaemia patients during the period assessed).

OBJETIVO: La leucemia linfocítica crónica supone una carga económica considerable para el Sistema Nacional de Salud español. Este  estudio estimó los costes directos de las terapias orales dirigidas para leucemia linfocítica crónica desde 2011 a 2025, inclusive, en un escenario con terapias orales de duración fija y en un escenario sin ellas.Método: Se representó el curso clínico de pacientes adultos con leucemia linfocítica crónica mediante un modelo de Markov con cuatro estados de salud: vigilancia activa, tratamiento de primera línea, recaída y  muerte. Patrón de tratamiento definido por tipo de paciente: estado o situación  de la enfermedad, edad, presencia o no de deleción en el brazo corto  del cromosoma 17, estado mutacional de la cadena pesada de  inmunoglobulinas y año de tratamiento. Algoritmo de tratamiento simulado  desde 2011 a 2025, incluyendo terapias financiadas por el Sistema Nacional de Salud español y su uso en práctica clínica habitual, validado por expertos de  referencia. Se asumió una opción de tratamiento por tipo de  paciente y periodo de tiempo (la más ampliamente utilizada en cada  momento). Se incluyeron costes directos: farmacológicos, administración,  pruebas realizadas, visitas rutinarias, hospitalizaciones y acontecimientos  adversos. RESULTADOS: Se estimó una prevalencia media anual de leucemia linfocítica crónica desde 2011 a 2025 de 16.436 pacientes en el escenario sin  terapias orales de duración fija y 16.413 en el escenario con terapias  orales de  duración fija. Los costes totales desde 2011 a 2025 en el escenario sin  terapias orales de duración fija ascendieron a 4.676,7 millones de € y a  4.111,8 millones de € en el escenario con terapias orales de duración fija. Así,  la introducción de las terapias orales de duración fija supondría un ahorro de  564,9 millones de € (12,1% del total del coste de atención de los pacientes con  leucemia linfocítica crónica durante el periodo evaluado). El coste total por  paciente en este periodo de tiempo pasaba de 266.019 € en el escenario  sin terapias orales de duración fija a 236.852 € en el escenario con terapias  rales de duración fija, suponiendo un ahorro de 29.167 € por paciente. CONCLUSIONES: Este estudio estima que la introducción de las terapias orales  de duración fija para el tratamiento de la leucemia linfocítica crónica entre  2011 y 2025 supone un ahorro para el Sistema Nacional de Salud español de  564,9 millones de € (12,1% del total del coste de atención de los pacientes con  leucemia linfocítica crónica durante el periodo evaluado).

Real-World Characteristics and Outcome of Patients Treated With Single-Agent Ibrutinib for Chronic Lymphocytic Leukemia in Spain (IBRORS-LLC Study).

BACKGROUND: Ibrutinib demonstrated remarkable efficacy and favorable tolerability in patients with untreated or relapsed/refractory (R/R) chronic lymphocytic leukemia (CLL), including those with high-risk genetic alterations. The IBRORS-CLL study assessed the characteristics, clinical management and outcome of CLL patients receiving ibrutinib in routine clinical practice in Spain. PATIENTS: Observational, retrospective, multicenter study in CLL patients who started single-agent ibrutinib as first-line treatment or at first or second relapse between January 2016 and January 2019. RESULTS: A total of 269 patients were included (median age: 70.9 years; cardiovascular comorbidity: 55.4%, including hypertension [47.6%] and atrial fibrillation [AF] [7.1%]). Overall, 96.7% and 69% of patients underwent molecular testing for del(17p)/TP53 mutation and IGHV mutation status. High-risk genetic features included unmutated IGHV (79%) and del(17p)/TP53 mutation (first-line: 66.3%; second-line: 23.1%). Overall, 84 (31.2%) patients received ibrutinib as first-line treatment, and it was used as second- and third-line therapy in 121 (45.0%) and 64 (23.8%) patients. The median progression-free survival and overall survival were not reached irrespective of del(17p)/TP53, or unmutated IGHV. Common grade ≥3 adverse events were infections (12.2%) and bleeding (3%). Grade ≥3 AF occurred in 1.5% of patients. CONCLUSION: This real-world study shows that single-agent ibrutinib is an effective therapy for CLL, regardless of age and high-risk molecular features, consistent with clinical trials. Additionally, single-agent ibrutinib was well tolerated, with a low rate of cardiovascular events. This study also emphasized a high molecular testing rate of del(17p)/TP53 mutation and IGHV mutation status in clinical practice according to guideline recommendations.

Treatment with daratumumab in patients with relapsed/refractory AL amyloidosis: a multicentric retrospective study and review of the literature.

Management of patients with relapsed or refractory (R/R) AL amyloidosis is complex. Some initial reports have shown positive results with daratumumab in heavily pre-treated AL amyloidosis patients. In this retrospective multicentric study, 38 patients (mean age 64 ± 9 years) with R/R AL amyloidosis treated with daratumumab were included. Cardiac and renal involvement was present in 76 and 74% of patients, and 42% had ≥3 organs involved. Median number of previous lines of therapy was 2 (range 1-8). Overall hematological response was 72%, including 28% complete responses. The median time to first hematological response was 2 weeks. A high-quality response (≥very good partial response) was obtained in 65% of patients who had never achieved such depth of response previously. Hematological responses were more frequent among patients receiving daratumumab as second-line therapy compared to subsequent therapies (92 vs. 61%). Cardiac and renal organ response rates were 37 and 59%. At 12 months, overall and progression-free survival were 59% (95%CI: 0.36-0.77) and 52% (95%CI: 0.29-0.70), respectively. Daratumumab is a safe and effective drug in the treatment of R/R AL amyloidosis and should be considered early in the course of the disease.

Early Prediction of Subsequent Molecular Response to Nilotinib in Patients with Chronic Myeloid Leukemia: Comparison of the Quantification of BCR-ABL1 Ratios Using ABL1 or GUSB Control Genes.

Molecular monitoring of BCR-ABL1 transcripts is a critical prognostic indicator of treatment response in chronic myeloid leukemia (CML). Quantification of BCR-ABL1 transcripts using ABL1 or GUSB as control genes on the early molecular response (MR) to frontline nilotinib was studied using data from 60 patients with chronic-phase CML from the Evaluating Nilotinib Efficacy and Safety in Clinical Trials as First-Line Treatment (ENEST1st) substudy. Effects of BCR-ABL1/ABL1 and BCR-ABL1/GUSB ratios at early time points as independent variables on subsequent MR were determined by logistic regression analyses and predictive cut-off values determined by receiver operating curve analyses. From day 45, concordance was found for both control genes' early transcript kinetics and ability to predict subsequent deep MR at 18 months. From baseline to 3 months, transcripts descended linearly with both control genes. Use of ABL1 allowed for an earlier prediction (2 months) of subsequent MR than with GUSB (3 months), with cut-off values of 1.5% and 0.19%, respectively. The dynamic determination of BCR-ABL1 transcripts using either internal control gene is valid and predictive of subsequent MR. The use of GUSB to predict an earlier and more accurate response than ABL1 is not supported in the results. Accurate early indicators of MR are essential to identify patients likely to have inferior outcomes who may benefit from treatment with an alternative tyrosine kinase inhibitor.

Correction to: An analysis of the kinetics of molecular response during the first trimester of treatment with nilotinib in newly diagnosed chronic myeloid leukemia patients in chronic phase.

Correction to: J Cancer Res Clin Oncol (2017) 143:2059-2066 DOI 10.1007/s00432-017-2445-z.

Análisis de minimización de costes de la leucemia linfocítica crónica en España en la era de las terapias orales dirigidas / Cost-minimisation analysis of chronic lymphocytic leukemia in Spain in the era of oral targeted therapies

Objetivo: La leucemia linfocítica crónica supone una carga económica considerable para el Sistema Nacional de Salud español. Este estudioestimó los costes directos de las terapias orales dirigidas para leucemia linfocítica crónica desde 2011 a 2025, inclusive, en un escenario conterapias orales de duración fija y en un escenario sin ellas.Método: Se representó el curso clínico de pacientes adultos con leucemia linfocítica crónica mediante un modelo de Markov con cuatro estados de salud: vigilancia activa, tratamiento de primera línea, recaída y muerte. Patrón de tratamiento definido por tipo de paciente: estado o situación dela enfermedad, edad, presencia o no de deleción en el brazo corto del cromosoma 17, estado mutacional de la cadena pesada de inmunoglobulinasy año de tratamiento. Algoritmo de tratamiento simulado desde 2011a 2025, incluyendo terapias financiadas por el Sistema Nacional deSalud español y su uso en práctica clínica habitual, validado por expertosde referencia. Se asumió una opción de tratamiento por tipo de pacientey periodo de tiempo (la más ampliamente utilizada en cada momento).Se incluyeron costes directos: farmacológicos, administración, pruebasrealizadas, visitas rutinarias, hospitalizaciones y acontecimientos adversos.Resultados: Se estimó una prevalencia media anual de leucemia linfocíticacrónica desde 2011 a 2025 de 16.436 pacientes en el escenariosin terapias orales de duración fija y 16.413 en el escenario con terapias orales de duración fija. Los costes totales desde 2011 a 2025 en el escenariosin terapias orales de duración fija ascendieron a 4.676,7 millonesde € y a 4.111,8 millones de € en el escenario con terapias orales deduración fija. Así, la introducción de las terapias orales de duración fijasupondría un ahorro de 564,9 millones de € (12,1% del total del costede atención de los pacientes con leucemia linfocítica crónica durante elperiodo evaluado).

Objective: Chronic lymphocytic leukaemia places a considerable economicburden on the Spanish National Health System. This study estimatedthe direct costs of chronic lymphocytic leukaemia oral targetedtherapies from 2011 to 2025, inclusive, in a scenario with fixed treatmentoral targeted therapies and in a scenario without them.Method: The clinical course of adult chronic lymphocytic leukaemiapatients was represented by a Markov model with four health states: watchfulwaiting, first-line treatment, relapse, and death. The treatment patternwas defined according to patient type by disease status or situation, age,presence or absence of deletion in the short arm of chromosome 17,immunoglobulin heavy chain mutation status, and year of treatment. Thetreatment algorithm was simulated from 2011 to 2025, and includedtherapiesfunded by the Spanish National Health System and their use inroutine clinical practice, validated by leading experts. A single treatmentoption was assumed for each type of patient and time period (the mostwidely option used at each time point). Direct costs were included: pharmacological,administration, tests performed, routine visits, hospitalizations,and adverse events.Results: From 2011 to 2025, there would be a mean annual chronic lymphocyticleukaemia prevalence of 16,436 patients in the scenario withoutfixed treatment oral targeted therapies and 16,413 in the scenario with fixed treatment oral targeted therapies. In the same period, the total costsin the scenario without fixed treatment oral targeted therapies would be€4,676.7 million and in the scenario with fixed treatment oral targetedtherapies they would be €4,111.8 million. Thus, the introduction of fixedtreatment oral targeted therapies would entail a saving of €564.9 million(12.1% of the total cost of care of chronic lymphocytic leukaemia patientsduring the period assessed).

An analysis of the kinetics of molecular response during the first trimester of treatment with nilotinib in newly diagnosed chronic myeloid leukemia patients in chronic phase.

PURPOSE: This study was aimed to analyze the association of very early molecular response to nilotinib with the achievement of deep molecular response (MR4) at 18 months. We hypothesized that the BCR-ABL1 levels during the first 3 months of therapy, and the kinetics of their descent in this period, could be predictive of deep molecular response thereafter. METHODS: This substudy of the ENEST1st trial included 60 patients with chronic myeloid leukemia in chronic phase treated with front-line nilotinib, and BCR-ABL1IS levels were measured using GUS as the control gene. The analysis included seven time points during the first trimester of treatment (baseline and fortnightly thereafter). RESULTS: The rates of MMR at 12 months, and of MR4 at 18 months (primary variable of the study), were 70 and 41%, respectively, similar to those obtained in the core study. BCR-ABL1IS ≤10% was achieved at 1, 1.5, 2 and 3 months in 50, 70, 83 and 93% of the patients, respectively. The observed shape of the BCR-ABL1IS descent was biphasic, with a faster slope during the first trimester and a median halving time (HT) of 11 days, the shortest reported in the literature. An HT ≤13 days was predictive of MMR at 12 months and MR4 at 18 months. CONCLUSIONS: The association of a shorter HT with response provides a rationale for exploring very early kinetics patterns in all patients treated with potent TKIs such as nilotinib.

Update of the Grupo Español de Leucemia Linfocítica Crónica clinical guidelines of the management of chronic lymphocytic leukemia. / Actualización de las guías nacionales de consenso del Grupo Español de Leucemia Linfocítica Crónica para el tratamiento y seguimiento de la leucemia linfocítica crónica.

BACKGROUND AND OBJECTIVE: The broad therapeutic arsenal and the biological heterogeneity of patients with chronic lymphocytic leukemia (CLL) makes it difficult to standardize treatment for CLL patients with specific clinical settings in routine clinical practice. These considerations prompted us to elaborate the present consensus document, which constitutes an update of the previous version published in 2013, mainly focusing on novel treatment strategies that have been developed over last 5 years, namely B-cell receptor inhibitors (ibrutinib and idelalisib), anti-CD20 monoclonal antibodies (ofatumumab and obinutuzumab), and Bcl-2 inhibitors (venetoclax). MATERIAL AND METHODS: A group of experts from the Spanish Chronic Lymphocytic Leukemia Group reviewed all published literature from January 2010 to January 2016, in order to provide recommendations based on clinical evidence. For those areas without strong scientific evidence, the panel of experts established consensus criteria based on their clinical experience. RESULTS: The project has resulted in several practical recommendations that will facilitate the diagnosis, treatment, and follow-up of patients with CLL. CONCLUSIONS: There are many controversial issues in the management of CLL with no appropriate studies for making consensus recommendations.

Further psychometric validation of the GAH scale: Responsiveness and effect size.

OBJECTIVES: The purpose of this study was to assess the responsiveness of the newly developed Geriatric Assessment in Hematology (GAH) scale to clinical change in older patients diagnosed with hematologic malignancies. METHODS: A prospective observational study conducted in 164 patients aged ≥65years and diagnosed with myelodysplastic syndrome (MDS)/acute myeloid leukemia (AML), multiple myeloma (MM), or chronic lymphocytic leukemia (CLL). Responsiveness of the GAH scales was studied by means of the Eastern Cooperative Oncology Group (ECOG) score, the Karnofsky performance status (KPS) score, the visual analog scale (VAS), and the physician's subjective assessment, used as clinical anchors to identify whether patients had changed clinically (either improved or worsened) or not since the baseline visit. Responsiveness was evaluated on the basis of effect size (ES). RESULTS: 164 patients (men, 63.7%; median age, 77.0 (72.8-81.4) participated. Statistically significant correlations were obtained between the investigator's qualitative assessment and changes in ECOG, KPS, and VAS scores. Likewise, a statistically significant correlation was obtained between the investigator's qualitative assessment and changes in the GAH scale score. Responsiveness of the GAH scale to detect clinical change was satisfactory (ES 0.34). CONCLUSION: Findings confirm that the GAH scale is responsive to clinical changes in patients' health status. Additionally, the GAH scale is a promising tool to improve clinical decision-making in older patients with hematological malignancies.

Actualización de las guías nacionales de consenso del Grupo Español de Leucemia Linfocítica Crónica para el tratamiento y seguimiento de la leucemia linfocítica crónica / Update of the Grupo Español de Leucemia Linfocítica Crónica clinical guidelines of the management of chronic lymphocytic leukemia

Antecedentes y objetivo: El amplio arsenal terapéutico junto con la heterogeneidad biológica de los pacientes hace que sea difícil estandarizar el tratamiento de la leucemia linfocítica crónica (LLC) en la práctica clínica. Estas consideraciones han motivado la preparación del presente documento de consenso, que se trata de una actualización de la versión publicada en 2013, prestando especial atención a las estrategias de tratamiento que han aparecido en los últimos 5 años, como los inhibidores del receptor de células B (ibrutinib e idelalisib), los nuevos anticuerpos monoclonales anti-CD20 (ofatumumab y obinutuzumab) y los inhibidores de Bcl-2 (venetoclax). Material y métodos: Un grupo de expertos del Grupo Español de Leucemia Linfocítica Crónica ha revisado la bibliografía publicada entre 2010 y 2016 para poder establecer una serie de recomendaciones basadas en la evidencia clínica. En aquellas áreas donde no se encontró una evidencia científica, el grupo de expertos estableció recomendaciones por consenso con base en sus experiencias clínicas. Resultados: Como resultado del proyecto se ha establecido un conjunto de recomendaciones de carácter práctico que facilitarán el diagnóstico, el tratamiento y el seguimiento de los pacientes con LLC. Conclusiones: Existen muchos aspectos del tratamiento de la LLC que resultan ser temas controvertidos sobre los que no hay estudios apropiados para generar recomendaciones de forma consensuada (AU)

Background and objective: The broad therapeutic arsenal and the biological heterogeneity of patients with chronic lymphocytic leukemia (CLL) makes it difficult to standardize treatment for CLL patients with specific clinical settings in routine clinical practice. These considerations prompted us to elaborate the present consensus document, which constitutes an update of the previous version published in 2013, mainly focusing on novel treatment strategies that have been developed over last 5 years, namely B-cell receptor inhibitors (ibrutinib and idelalisib), anti-CD20 monoclonal antibodies (ofatumumab and obinutuzumab), and Bcl-2 inhibitors (venetoclax). Material and methods: A group of experts from the Spanish Chronic Lymphocytic Leukemia Group reviewed all published literature from January 2010 to January 2016, in order to provide recommendations based on clinical evidence. For those areas without strong scientific evidence, the panel of experts established consensus criteria based on their clinical experience. Results: The project has resulted in several practical recommendations that will facilitate the diagnosis, treatment, and follow-up of patients with CLL. Conclusions: There are many controversial issues in the management of CLL with no appropriate studies for making consensus recommendations (AU)