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1.
J Clin Oncol ; 42(19): 2250-2256, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38547425

RESUMEN

Clinical trials frequently include multiple end points that mature at different times. The initial report, typically based on the primary end point, may be published when key planned co-primary or secondary analyses are not yet available. Clinical Trial Updates provide an opportunity to disseminate additional results from studies, published in JCO or elsewhere, for which the primary end point has already been reported.Mosunetuzumab is a CD20xCD3 T-cell-engaging bispecific antibody administered as an off-the-shelf, fixed-duration treatment in an outpatient setting. We report an updated analysis of the durability of response, by investigator assessment, after an overall median follow-up of 3.5 years in patients with relapsed/refractory indolent or aggressive B-cell non-Hodgkin lymphoma (iNHL/aNHL) from the dose-escalation stage of a phase I/II study of mosunetuzumab (ClinicalTrials.gov identifier: NCT02500407). Across dose levels, 65.7% of patients with iNHL and 36.4% with aNHL achieved a complete or partial response to mosunetuzumab. Median duration of response (DoR) in patients with iNHL for all responders was 23.2 months (95% CI, 13.8 to not estimable [NE]), but was not reached in complete responders (95% CI, 21.0 to NE). After a median time on study of 38.9 months, no relapses were observed beyond 26 months in complete responders. In patients with aNHL, median DoR for all responders was 7.8 months (95% CI, 4.6 to 22.8). Among 12 complete responders who progressed postmosunetuzumab treatment and were retreated with mosunetuzumab, 83.3% had an objective response and 58.3% achieved a second complete response. Our study reports the longest follow-up using bispecific antibodies in patients with B-cell non-Hodgkin lymphoma and demonstrates that mosunetuzumab can mediate durable remissions with time-limited treatment.


Asunto(s)
Anticuerpos Biespecíficos , Linfoma de Células B , Humanos , Linfoma de Células B/tratamiento farmacológico , Estudios de Seguimiento , Anticuerpos Biespecíficos/uso terapéutico , Anticuerpos Biespecíficos/administración & dosificación , Anticuerpos Biespecíficos/efectos adversos , Persona de Mediana Edad , Masculino , Femenino , Anciano , Adulto , Recurrencia Local de Neoplasia/tratamiento farmacológico , Antineoplásicos Inmunológicos/uso terapéutico , Antineoplásicos Inmunológicos/efectos adversos
2.
Leuk Lymphoma ; 65(6): 720-735, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38454535

RESUMEN

Diffuse large B-cell lymphoma (DLBCL) may be cured with anti-CD20 based chemoimmunotherapy in the majority of cases, however, relapsed/refractory disease occurs in 30-40% patients, and despite significant recent therapeutic advances, continues to represent an unmet clinical need. Bispecific antibodies represent a novel class of therapy currently in development for relapsed/refractory B-cell lymphoma. This review discusses the background clinical need, mechanism of action, and clinical data including efficacy and toxicity for bispecific antibodies in DLBCL, focusing on the most advanced class in development; CD20 targeting T-cell engaging antibodies. Emerging possibilities for future use of bispecific antibodies is also discussed, including novel and cytotoxic combination regimens in relapsed and first-line settings.


Asunto(s)
Anticuerpos Biespecíficos , Linfoma de Células B Grandes Difuso , Humanos , Anticuerpos Biespecíficos/uso terapéutico , Anticuerpos Biespecíficos/farmacología , Linfoma de Células B Grandes Difuso/tratamiento farmacológico , Linfoma de Células B Grandes Difuso/inmunología , Resistencia a Antineoplásicos/inmunología , Antineoplásicos Inmunológicos/uso terapéutico , Antineoplásicos Inmunológicos/efectos adversos , Recurrencia Local de Neoplasia/inmunología , Recurrencia Local de Neoplasia/tratamiento farmacológico , Resultado del Tratamiento , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos
3.
Br J Haematol ; 201(2): 185-198, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36807902

RESUMEN

Mantle cell lymphoma (MCL) is a mature B-cell lymphoma with a variable clinical course and historically poor prognosis. Management is challenging in part due to the heterogeneity of the disease course, with indolent and aggressive subtypes now well recognised. Indolent MCL is often characterised by a leukaemic presentation, SOX11 negativity and low proliferation index (Ki-67). Aggressive MCL is characterised by rapid onset widespread lymphadenopathy, extra-nodal involvement, blastoid or pleomorphic histology and high Ki-67. Tumour protein p53 (TP53) aberrations in aggressive MCL are recognised with clear negative impact on survival. Until recently, trials have not addressed these specific subtypes separately. With the increasing availability of targeted novel agents and cellular therapies, the treatment landscape is constantly evolving. In this review, we describe the clinical presentation, biological factors, and specific management considerations of both indolent and aggressive MCL and discuss current and potential future evidence which may help move to a more personalised approach.


Asunto(s)
Antineoplásicos , Linfoma de Células B , Linfoma de Células del Manto , Adulto , Humanos , Linfoma de Células del Manto/terapia , Linfoma de Células del Manto/tratamiento farmacológico , Antígeno Ki-67 , Antineoplásicos/uso terapéutico , Linfoma de Células B/tratamiento farmacológico , Progresión de la Enfermedad
4.
Leuk Lymphoma ; 64(3): 621-627, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-38376128

RESUMEN

Bruton's tyrosine kinase inhibitors (BTKi) have an established role in the management of patients with relapsed/refractory mantle cell lymphoma (MCL). However, scant data exist on outcomes of patients ineligible for clinical trials testing these therapies. We describe a contemporary cohort of relapsed/refractory MCL patients from the Australasian Lymphoma and Related Diseases Registry treated with ibrutinib December 2014 until July 2018, to determine the proportion potentially eligible for original trials, reasons for ineligibility and survival outcomes. Of 44 patients, 41% met one or more exclusion criteria from previous phase II/III MCL BTKi studies. Median progression-free and overall survival were 13.7 months (95% CI 6.2-28.1) and 15.6 months (95% CI 10.8-29.6) respectively and were shorter in patients excluded from clinical trials based on ECOG ≥2. Ibrutinib has demonstrable clinical effectiveness in a population enriched for unfit and trial-ineligible patients, and a need for more inclusive enrollment criteria in future BTKi studies is highlighted.


Asunto(s)
Adenina/análogos & derivados , Linfoma de Células del Manto , Adulto , Humanos , Linfoma de Células del Manto/patología , Australia/epidemiología , Piperidinas/uso terapéutico , Sistema de Registros
7.
Leuk Lymphoma ; 63(12): 2785-2794, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-35852229

RESUMEN

Treatment of chronic lymphocytic leukemia (CLL) has been transformed in the past two decades. The introduction of targeted therapies has improved patient outcomes and the deliverability of effective therapies. Making the best use of the next wave of Bruton's tyrosine kinase (BTK) inhibitors requires an understanding of the nuances that separate the drugs in this class of agents. This paper reviews the newer BTK inhibitors and provides practical guidance on the management of CLL using acalabrutinib. Acalabrutinib is a safe and efficacious BTKi in the treatment of CLL. While some side effects appear to be an "on-target" effect of BTK inhibition, the selectivity of second-generation covalent BTK inhibitors such as acalabrutinib may result in a favorable safety profile due to less off-target kinase inhibition. Acalabrutinib represents a well-tolerated and effective alternative to ibrutinib in the management of CLL.


Asunto(s)
Leucemia Linfocítica Crónica de Células B , Humanos , Leucemia Linfocítica Crónica de Células B/diagnóstico , Leucemia Linfocítica Crónica de Células B/tratamiento farmacológico , Agammaglobulinemia Tirosina Quinasa , Pirimidinas/efectos adversos , Pirazoles/uso terapéutico , Inhibidores de Proteínas Quinasas/efectos adversos
8.
Lancet Oncol ; 23(8): 1055-1065, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35803286

RESUMEN

BACKGROUND: Mosunetuzumab is a CD20 × CD3 T-cell-engaging bispecific monoclonal antibody that redirects T cells to eliminate malignant B cells. In a phase 1 study, mosunetuzumab was well tolerated and active in patients with relapsed or refractory B-cell lymphoma. We, therefore, aimed to evaluate the safety and anti-tumour activity of fixed-duration mosunetuzumab in patients with relapsed or refractory follicular lymphoma who had received two or more previous therapies. METHODS: We conducted a single-arm, multicentre, phase 2 study at 49 centres in seven countries (Australia, Canada, Germany, South Korea, Spain, UK, and USA). All patients were aged 18 years or older with histologically confirmed follicular lymphoma (grade 1-3a) and an Eastern Cooperative Oncology Group performance status of 0-1. Patients had disease that was relapsed or refractory to two or more previous lines of treatment, including an anti-CD20 therapy and an alkylating agent. Intravenous mosunetuzumab was administered in 21-day cycles with cycle 1 step-up dosing: 1 mg on cycle 1 day 1, 2 mg on cycle 1 day 8, 60 mg on cycle 1 day 15 and cycle 2 day 1, and 30 mg on day 1 of cycle 3 and onwards. Patients with a complete response by investigator assessment using the International Harmonisation Project criteria completed treatment after cycle 8, whereas patients with a partial response or stable disease continued treatment for up to 17 cycles. The primary endpoint was independent review committee-assessed complete response rate (as best response) in all enrolled patients; the primary efficacy analysis compared the observed IRC-assessed complete response rate with a 14% historical control complete response rate in a similar patient population receiving the pan class I PI3K inhibitor copanlisib. Safety was assessed in all enrolled patients. This study is registered with ClinicalTrials.gov, number NCT02500407, and is ongoing. FINDINGS: Between May 2, 2019, and Sept 25, 2020, we enrolled 90 patients. As of the data cutoff date (Aug 27, 2021), the median follow-up was 18·3 months (IQR 13·8-23·3). According to independent review committee assessment, a complete response was recorded in 54 patients (60·0% [95% CI 49·1-70·2]). The observed complete response rate was significantly higher than the historical control complete response rate with copanlisib of 14% (p<0·0001), thereby meeting the primary study endpoint. Cytokine release syndrome was the most common adverse event (40 [44%] of 90 patients) and was predominantly grade 1 (23 [26%] of 90) and grade 2 (15 [17%]), and primarily confined to cycle 1. The most common grade 3-4 adverse events were neutropenia or neutrophil count decreased (24 [27%] of 90 patients), hypophosphataemia (15 [17%]), hyperglycaemia (seven [8%]), and anaemia (seven [8%]). Serious adverse events occurred in 42 (47%) of 90 patients. No treatment-related grade 5 (ie, fatal) adverse event occurred. INTERPRETATION: Fixed-duration mosunetuzumab has a favourable safety profile and induces high rates of complete remissions, allowing potential administration as an outpatient regimen, in patients with relapsed or refractory follicular lymphoma and two or more previous therapies. FUNDING: F Hoffmann-La Roche and Genentech.


Asunto(s)
Anticuerpos Biespecíficos , Antineoplásicos , Linfoma Folicular , Recurrencia Local de Neoplasia , Anticuerpos Biespecíficos/efectos adversos , Antineoplásicos/efectos adversos , Humanos , Linfoma Folicular/tratamiento farmacológico , Linfoma Folicular/patología , Recurrencia Local de Neoplasia/tratamiento farmacológico , Resultado del Tratamiento
9.
Br J Haematol ; 197(2): 139-155, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-35037240

RESUMEN

Positron emission tomography/computed tomography (PET/CT) is used for the staging of lymphomas. Clinical information, such as Ann Arbor stage and number of involved sites, is derived from baseline staging and correlates with tumour volume. With modern imaging software, exact measures of total metabolic tumour volumes (tMTV) can be determined, in a semi- or fully-automated manner. Several technical factors, such as tumour segmentation and PET/CT technology influence tMTV and there is no consensus on a standardized uptake value (SUV) thresholding method, or how to include the volumes in the bone marrow and spleen. In diffuse large B-cell lymphoma, follicular lymphoma, peripheral T-cell lymphoma, and Hodgkin lymphoma, tMTV has been shown to predict progression-free survival and/or overall survival, after adjustments for clinical risk scores. However, most studies have used receiver operating curves to determine the optimal cut-off for tMTV and many studies did not include a training-validation approach, which led to the risk of overestimation of the independent prognostic value of tMTV. The identified cut-off values are heterogeneous, even when the same SUV thresholding method is used. Future studies should focus on testing tMTV in homogeneously-treated cohorts and seek to validate identified cut-off values externally so that a prognostic value can be documented, over and above currently used clinical surrogates for tumour volume.


Asunto(s)
Linfoma de Células B Grandes Difuso , Tomografía Computarizada por Tomografía de Emisión de Positrones , Fluorodesoxiglucosa F18 , Humanos , Linfoma de Células B Grandes Difuso/patología , Tomografía Computarizada por Tomografía de Emisión de Positrones/métodos , Tomografía de Emisión de Positrones , Pronóstico , Estudios Retrospectivos , Carga Tumoral
10.
Hemasphere ; 5(11): e648, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34651103

RESUMEN

There are limited data on post-transplant lymphoproliferative disorder (PTLD) in the era of positron emission tomography (PET) and rituximab (R). Furthermore, there is limited data on the risk of graft rejection with modern practices in reduction in immunosuppression (RIS). We studied 91 patients with monomorphic diffuse large B-cell lymphoma PTLD at 11 Australian centers: median age 52 years, diagnosed between 2004 and 2017, median follow-up 4.7 years (range, 0.5-14.5 y). RIS occurred in 88% of patients. For patients initially treated with R-monotherapy, 45% achieved complete remission, rising to 71% with the addition of rituximab, cyclophosphamide, doxorubicin, vincristine, prednisolone (R-CHOP) for those not in complete remission. For patients initially treated with R-CHOP, the complete remission rate was 76%. There was no difference in overall survival (OS) between R-monotherapy and R-chemotherapy patients. There was no difference in OS for patients with systemic lymphoma (n = 68) versus central nervous system (CNS) involvement (n = 23) (3-y OS 72% versus 73%; P = 0.78). Treatment-related mortality was 7%. End of treatment PET was prognostic for patients with systemic lymphoma with longer OS in the PET negative group (3-y OS 91% versus 57%; P = 0.01). Graft rejection occurred in 9% (n = 4 biopsy-proven; n = 4 suspected) during the entire follow-up period with no cases of graft loss. RIS and R-based treatments are safe and effective with a low likelihood of graft rejection and high cure rate for patients achieving complete remission with CNS or systemic PTLD.

12.
Clin Case Rep ; 9(5): e04194, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-34026185

RESUMEN

Floaters or visual disturbance in a patient with ENKL should prompt evaluation for possible vitreoretinal involvement. Lymphoma with ocular involvement should be treated aggressively and in most cases heralds CNS involvement.

13.
Blood Adv ; 5(9): 2426-2437, 2021 05 11.
Artículo en Inglés | MEDLINE | ID: mdl-33961018

RESUMEN

The dilemma of whether to treat elderly patients with diffuse large B-cell lymphoma (DLBCL) with a full or reduced dose intensity (DI) of R-CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisolone+rituximab) is often faced by clinicians. We conducted a systematic review assessing the impact of R-CHOP DI on DLBCL survival outcomes, according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Protocols (PRISMA-P) guidelines. We searched MEDLINE, EMBASE, and Cochrane CENTRAL for studies with ≥100 patients treated with R-CHOP/R-CHOP-like therapies published from January 2002 through November 2020. Studies were included if they reported the impact of R-CHOP DI on survival outcomes. We screened records, extracted data, and reviewed all the studies for quality and statistical appraisal. Of 380 screened records, 13 studies including 5188 patients were reviewed. DI was often calculated as the ratio of the cumulative delivered dose of prespecified drug(s) to the cumulative planned dose multiplied by a time-correction factor. Lower DI (intended or relative) was associated with inferior survival in 7 of 9 studies reporting crude survival analyses. Multivariable analysis using DI as a covariate was performed in 10 studies. Six showed an association (P < .05) with adjustment for other covariates, and 4 did not. Most studies and those larger studies of higher quality showed poorer outcomes associated with reduced DI. In subgroups aged ≥80 years, survival was not consistently affected by reduced DI. DI-specific randomized trials are warranted, but these data support full-dose R-CHOP in elderly and fit patients aged <80 years with DLBCL, but not in those aged ≥80 years, where dose-reduced R-CHOP does not appear to compromise survival.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica , Linfoma de Células B Grandes Difuso , Anciano , Anticuerpos Monoclonales de Origen Murino , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Ciclofosfamida/uso terapéutico , Doxorrubicina/uso terapéutico , Humanos , Linfoma de Células B Grandes Difuso/tratamiento farmacológico , Rituximab/uso terapéutico , Vincristina/uso terapéutico
15.
Acta Oncol ; 59(7): 766-774, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32189546

RESUMEN

Background: Diffuse large B-cell lymphoma (DLBCL) is the most common lymphoma subtype. Disease progression or relapse following frontline chemoimmunotherapy, largely in the form of standard R-CHOP, occurs in 30-40% patients. Relapsed/refractory (R/R) DLBCL represents a major unmet medical need. In particular, patients with primary refractory disease or those whose lymphoma relapses after autologous stem cell transplantation have historically had poor outcomes.Material and methods: Chimeric antigen receptor T-cell (CART) therapy is a promising novel treatment with curative potential in this setting. CART is based on ex vivo genetic modification of autologous T-cells to express chimeric receptors targeting antigens highly expressed in tumors such as CD19 in DLBCL. After lymphocyte-depleting therapy, patients are infused with CARTs that expand in vivo and target CD19-positive lymphoma cells.Results: In initial phase I-II trials, investigators have demonstrated complete responses in 40-50% of patients with R/R DLBCL, resulting in durable remission approaching 3 years of follow-up in most of these patients without further treatment. The logistics of delivery are complex as cell products require timely long-distance transfer between hospitals and production facilities. The unique toxicity profile of CARTs, including the risk of fatal immunological and neurologic events, also requires specific hospital wide management approaches and education. The substantial direct and indirect costs of CART will limit access even in countries with well resourced health care systems.Conclusions: While only two products are commercially available at present, further approvals in coming years appear likely. Future directions include CARTs with reactivity to tumor antigens other than CD19 and products targeting multiple tumor antigens to overcome resistance. The availability of CART has altered the current treatment algorithm for R/R DLBCL, and indications will likely expand to earlier lines of therapy and other hematologic malignancies.


Asunto(s)
Antígenos CD19/uso terapéutico , Linfoma de Células B Grandes Difuso/terapia , Receptores de Antígenos de Linfocitos T/uso terapéutico , Antígenos CD19/efectos adversos , Antígenos CD19/economía , Productos Biológicos , Ensayos Clínicos Fase I como Asunto , Ensayos Clínicos Fase II como Asunto , Análisis Costo-Beneficio , Progresión de la Enfermedad , Humanos , Inmunoterapia Adoptiva/efectos adversos , Inmunoterapia Adoptiva/economía , Recurrencia , Insuficiencia del Tratamiento
17.
Cancer Med ; 9(2): 663-670, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31808316

RESUMEN

Marginal zone lymphoma of the central nervous system (CNS MZL) is rare. The clinical features, treatment, and prognosis are not well characterized. We performed a multicenter retrospective study of CNS MZL. Twenty-six patients were identified: half with primary and half with secondary CNS involvement. The median age was 59 years (range 26-78), 62% female and 79% with ECOG performance status ≤ 1. The most common disease site was the dura (50%). Treatment was determined by the treating physician and varied substantially. After a median follow up of 1.9 years, the estimated 2-year progression-free (PFS) and overall survival (OS) rates were 59% and 80%, respectively. Secondary CNS MZL was associated with 2-year OS of 58%. CNS MZL is rare, but relative to other forms of CNS lymphoma, outcomes appear favorable, particularly among the subset of patients with dural presentation and primary CNS presentation.


Asunto(s)
Neoplasias del Sistema Nervioso Central/mortalidad , Duramadre/patología , Linfoma de Células B de la Zona Marginal/mortalidad , Adulto , Anciano , Neoplasias del Sistema Nervioso Central/patología , Neoplasias del Sistema Nervioso Central/terapia , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Linfoma de Células B de la Zona Marginal/patología , Linfoma de Células B de la Zona Marginal/terapia , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos , Tasa de Supervivencia
18.
Am J Clin Pathol ; 152(6): 818-827, 2019 11 04.
Artículo en Inglés | MEDLINE | ID: mdl-31433844

RESUMEN

OBJECTIVES: To describe three further cases of anaplastic large cell lymphoma (ALCL) occurring in patients with preexisting chronic lymphocytic leukemia (CLL). We also reviewed the literature of previously published cases. METHODS: We discuss the clinical features, histopathology, and outcomes for three patients with ALCL and CLL from Perth, Australia. The cases were also included in a literature review of existing cases and comparisons were made with our cohort. RESULTS: The three patients included two men (aged 77 and 74 years) and one woman (aged 66 years). All had a history of untreated CLL with diagnosis established 4 to 16 years before. They had lymphadenopathy and/or cutaneous/soft tissue lesions that proved to be ALCL, ALK+ (one case) or ALCL, ALK- (two cases). CONCLUSIONS: Further research is required in this area to establish prognostic and management recommendations. Increasing numbers of cases are being described. Positron emission tomography with computed tomography was not useful in our cohort for diagnosing progression.


Asunto(s)
Leucemia Linfocítica Crónica de Células B/patología , Linfoma Anaplásico de Células Grandes/patología , Neoplasias Primarias Múltiples/patología , Anciano , Femenino , Humanos , Masculino
20.
Blood Adv ; 3(13): 2013-2021, 2019 07 09.
Artículo en Inglés | MEDLINE | ID: mdl-31285189

RESUMEN

In advanced-stage diffuse large B-cell lymphoma (DLBCL), the presence of an activated B-cell phenotype or a non-germinal center (GCB) phenotype, coexpression of MYC and BCL2 by immunohistochemistry, and the cooccurrence of MYC and BCL2 or BCL6 rearrangements are associated with inferior outcomes. It is unclear whether these variables remain prognostic in stage I/II patients. In this retrospective study, we evaluated the prognostic impact of cell of origin (COO), as well as dual-expressor (DE) status and molecular double-hit (DH) status, in stage I/II DLBCL by positron emission tomography with computed tomography (PET-CT). A total of 211 patients treated with R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone)-like regimens, with or without radiotherapy, was included. The median follow-up in the entire cohort was 4 years (range, 0.4-9.4), with estimated 4-year progression-free survival (PFS) and overall survival (OS) rates of 85% (95% confidence interval [CI], 79-89) and 88% (95% CI, 83-92), respectively. By univariable analysis, DE (PFS: hazard ratio [HR], 1.27; 95% CI, 0.58-2.81, P = .55 and OS: HR, 1.40; 95% CI, 0.60-3.30; P = .44), DH (PFS: HR, 1.21; 95% CI, 0.27-5.31; P = .80 and OS: HR, 0.61; 95% CI, 0.08-4.73; P = .64), and non-GCB status (PFS: HR, 1.59; 95% CI, 0.83-3.03; P = .16 and OS: HR, 1.80; 95% CI, 0.89-3.67; P = .10) were associated with poorer outcomes. In patients with PET-CT-defined stage I/II DLBCL treated with R-CHOP-like therapy, with or without radiation, COO and DE and DH status were not significantly associated with inferior PFS or OS.


Asunto(s)
Biomarcadores de Tumor , Transformación Celular Neoplásica/genética , Linfoma de Células B Grandes Difuso/genética , Linfoma de Células B Grandes Difuso/mortalidad , Proteínas Proto-Oncogénicas c-bcl-2/genética , Proteínas Proto-Oncogénicas c-myc/genética , Adulto , Anciano , Anciano de 80 o más Años , Protocolos de Quimioterapia Combinada Antineoplásica , Ciclofosfamida , Doxorrubicina , Femenino , Humanos , Estimación de Kaplan-Meier , Linfoma de Células B Grandes Difuso/diagnóstico , Linfoma de Células B Grandes Difuso/terapia , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Tomografía Computarizada por Tomografía de Emisión de Positrones , Prednisona , Estudios Retrospectivos , Rituximab , Resultado del Tratamiento , Vincristina , Adulto Joven
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