Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 81
Filtrar
1.
Blood Adv ; 2024 Sep 03.
Artículo en Inglés | MEDLINE | ID: mdl-39226464

RESUMEN

The multicenter, prospective phase II Australasian Leukaemia and Lymphoma Group (ALLG) NHL29 trial (ACTRN12615000551594) was conducted to assess the addition of ibrutinib to R-mini-CHOP (IRiC) in patients aged ≥75 years with newly diagnosed Diffuse Large B-cell Lymphoma (DLBCL). Treatment consisted of six 21-day cycles of ibrutinib-R-mini-CHOP followed by two 21-day cycles of rituximab-ibrutinib. Co-primary endpoints were deliverability and 2-year overall survival (OS). All six cycles of R-mini-CHOP were completed in 63/79 patients (80%) with the median Average Relative Total Dose and Average Relative Dose Intensity for the entire regimen both 97% (IQR 82, 100; 88, 100). With a median follow-up of 35.5 months, the 2-year OS was 68% (95% CI, 55.6 - 77.4) with a 2-year PFS of 60.0% (95% CI, 47.7- 70.3). Median OS and PFS were 72 months (95% CI, 35 - not reached) and 40 months (95% CI, 20.4 - not reached) respectively. The overall response rate (ORR) was 76% (61/79 patients), with a complete response (CR) rate of 71% (56/79 patients). Deaths occurred in 34/79 patients (43%), including 17 from progressive disease and 5 treatment related. 67% patients experienced at least one serious adverse event. Most common adverse events were infections and diarrhea (majority grade 1-2). In both health-related quality of life measures, there was an improvement in functional and symptom scales, median health state classification score and median visual analogue scale in responders over time. In conclusion, this study showed that the addition of ibrutinib to R-mini-CHOP was both deliverable and efficacious in elderly DLBCL patients.

2.
EJHaem ; 5(4): 709-720, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39157596

RESUMEN

Background: Despite recent advances, optimal therapeutic approaches applicable to subpopulations with primary central nervous system (CNS) lymphoma outside of clinical trials remain to be determined. Methods: We performed a retrospective study of immunocompetent, adult patients with histologically confirmed diffuse large B-cell lymphoma of the CNS (PCNSL). 190/204 (93%) patients (median age: 65) received one of five high-dose methotrexate (HD-MTX) containing chemotherapy regimens: MPV/Ara-C (HD-MTX, procarbazine, and vincristine, followed by cytarabine [Ara-C]) (n = 94, 50%), MATRix (HD-MTX, Ara-C, thiotepa, and rituximab) (n = 19, 10%), HD-MTX/Ara-C (n = 31, 16%), HD-MTX monotherapy (n = 35, 18%) and MBVP (HD-MTX, carmustine, teniposide, prednisolone) (n = 11, 6%). Results: Cumulative median HD-MTX and Ara-C doses were 17 g/m2 (range: 1-64 g/m2) and 12 g/m2 (0-32 g/m2) respectively. Using 14 g/m2 as the reference dose, the median HD-MTX relative dose intensity (HD-MTX-RDI) was 1.25 (0.27-4.57) with 84% receiving > 0.75. The overall response rate (ORR) was 72% (complete response: 50%) after completing HD-MTX. At a median follow-up of 3.41 years (0.06-9.42), progression-free survival (PFS) and overall survival (OS) were different between chemotherapy cohorts, with the best outcomes achieved in the MPV/Ara-C cohort (2-year PFS 74%, 2-year OS 82%; p = 0.0001 and p = 0.0024 respectively). On multivariate analysis, MPV/Ara-C administration and HD-MTX-RDI > 0.75 were associated with longer PFS and OS. Conclusion: Sequential, response-adapted approaches can improve outcomes, even in older patients who are ineligible for a high-intensity concurrent chemotherapy approach and do not undergo traditional consolidative strategies.

3.
Am J Hematol ; 2024 Aug 17.
Artículo en Inglés | MEDLINE | ID: mdl-39152767

RESUMEN

In classical Hodgkin lymphoma (cHL), responsiveness to immune-checkpoint blockade (ICB) is associated with specific tumor microenvironment (TME) and peripheral blood features. The role of ICB in nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is not established. To gain insights into its potential in NLPHL, we compared TME and peripheral blood signatures between HLs using an integrative multiomic analysis. A discovery/validation approach in 121 NLPHL and 114 cHL patients highlighted >2-fold enrichment in programmed cell death-1 (PD-1) and T-cell Ig and ITIM domain (TIGIT) gene expression for NLPHL versus cHL. Multiplex imaging showed marked increase in intra-tumoral protein expression of PD-1+ (and/or TIGIT+) CD4+ T-cells and PD-1+CD8+ T-cells in NLPHL compared to cHL. This included T-cells that rosetted with lymphocyte predominant (LP) and Hodgkin Reed-Sternberg (HRS) cells. In NLPHL, intra-tumoral PD-1+CD4+ T-cells frequently expressed TCF-1, a marker of heightened T-cell response to ICB. The peripheral blood signatures between HLs were also distinct, with higher levels of PD-1+TIGIT+ in TH1, TH2, and regulatory CD4+ T-cells in NLPHL versus cHL. Circulating PD-1+CD4+ had high levels of TCF-1. Notably, in both lymphomas, highly expanded populations of clonal TIGIT+PD-1+CD4+ and TIGIT+PD-1+CD8+ T-cells in the blood were also present in the TME, indicating that immune-checkpoint expressing T-cells circulated between intra-tumoral and blood compartments. In in vitro assays, ICB was capable of reducing rosette formation around LP and HRS cells, suggesting that disruption of rosetting may be a mechanism of action of ICB in HL. Overall, results indicate that further evaluation of ICB is warranted in NLPHL.

5.
Br J Haematol ; 205(2): 534-541, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38632873

RESUMEN

Primary gastric diffuse large B-cell lymphoma (PG-DLBCL) accounts for the majority of extra-nodal DLBCL. Even so, literature is lacking on early, localised presentations. We studied a cohort of patients with stage I disease, diagnosed between 2006 and 2018, from six centres between Australia, Canada and Denmark. Our goal was to characterise outcomes, review treatment and investigate the role of interim positron emission tomography (iPET). Thirty-seven eligible patients were identified. The median duration of follow-up was 42.2 months. All received chemoimmunotherapy with 91.9% (n = 34) given rituximab, cyclophosphamide, doxorubicin, vincristine and prednisolone (R-CHOP). 35.1% (n = 13) underwent consolidative radiotherapy. Eighteen patients were H. pylori positive and 11 had the documentation of H. pylori eradication therapy. The 4-year progression-free survival and overall survival of R-CHOP was 88% (95% CI: 71-95) and 91% (95% CI: 75-97) respectively. All patients who achieved a partial metabolic response or complete metabolic response on iPET went on to achieve complete response at the end of treatment. R-CHOP-based therapy with iPET assessment appears to offer favourable outcomes, with radiotherapy and H. pylori eradication therapy implemented on a case-by-case basis.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica , Linfoma de Células B Grandes Difuso , Neoplasias Gástricas , Humanos , Linfoma de Células B Grandes Difuso/mortalidad , Linfoma de Células B Grandes Difuso/terapia , Masculino , Femenino , Persona de Mediana Edad , Anciano , Estudios Retrospectivos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias Gástricas/terapia , Neoplasias Gástricas/patología , Adulto , Anciano de 80 o más Años , Rituximab/uso terapéutico , Rituximab/administración & dosificación , Vincristina/uso terapéutico , Vincristina/administración & dosificación , Prednisona/uso terapéutico , Prednisona/administración & dosificación , Ciclofosfamida/uso terapéutico , Ciclofosfamida/administración & dosificación , Doxorrubicina/uso terapéutico , Doxorrubicina/administración & dosificación , Infecciones por Helicobacter/complicaciones , Infecciones por Helicobacter/tratamiento farmacológico , Helicobacter pylori , Tomografía de Emisión de Positrones , Linfoma no Hodgkin
6.
Br J Haematol ; 204(5): 1582-1584, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38581289

RESUMEN

The role of Pi3K inhibitors in lymphoma is diminishing due to the adverse results from trials in indolent lymphoma, but is a one-size-fits-all approach to drug development penalising some lymphoma subtypes and the newer generation of Pi3K inhibitors? The report by Soumerai et al. of zandelisib with zanubrutinib in follicular and mantle cell lymphoma is an important addition to the data. Commentary on: Soumerai et al. Safety and efficacy of zandelisib plus zanubrutinib in previously treated follicular and mantle cell lymphomas. Br J Haematol 2024;204:1762-1770.


Asunto(s)
Inhibidores de las Quinasa Fosfoinosítidos-3 , Humanos , Inhibidores de las Quinasa Fosfoinosítidos-3/uso terapéutico , Inhibidores de las Quinasa Fosfoinosítidos-3/farmacología , Linfoma de Células del Manto/tratamiento farmacológico , Linfoma/tratamiento farmacológico , Linfoma Folicular/tratamiento farmacológico , Pirazoles/uso terapéutico , Pirimidinas/uso terapéutico , Inhibidores de Proteínas Quinasas/uso terapéutico , Inhibidores de Proteínas Quinasas/farmacología , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Piperidinas
7.
EJHaem ; 5(2): 325-332, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38633125

RESUMEN

Polatuzumab vedotin (Pola) is an approved therapy in combination with rituximab and bendamustine for relapsed or refractory diffuse large B-cell lymphoma (RR-DLBCL) based on positive results of the landmark phase II randomised G029365 trial. However, trial results for many approved novel therapies in RR-DLBCL have not been replicated in routine care cohorts, as RR-DLBCL patient populations are heterogeneous and trial eligibility is increasingly restrictive. We evaluated outcomes from pola ± bendamustine and rituximab in patients with RR-DLBCL enrolled in a compassionate access program with no alternative treatment options identified via the Australasian Lymphoma and Related Diseases Registry according to their eligibility for the original phase II published study. Of 58 eligible patients, 74% met the criteria deeming them ineligible for the G029365 original study at the time of pola's commencement. Median progression-free survival and overall survival in our cohort were 2.3 and 3.5 months, respectively. In contrast to the landmark trial cohort, more of our patients ceased therapy prior to completion, the majority due to progressive disease and only 8/58 received any subsequent treatment. Dismal outcomes in this Australian real-world population demonstrate trial eligibility is challenging to meet, and newer treatments can be difficult to deliver in routine care. Clinically applicable results from therapeutic studies require trial cohorts to reflect representative clinical populations wherever possible, and more research is required to address the benefit of novel agents in the increasing majority who are ineligible for modern studies.

8.
Br J Haematol ; 205(1): 146-157, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38485116

RESUMEN

Infection and lymphopenia are established bendamustine-related complications. The relationship between lymphopenia severity and infection risk, and the role of antimicrobial prophylaxis, is not well described. This multicentre retrospective study analysed infection characteristics and antimicrobial prophylaxis in 302 bendamustine-treated indolent non-Hodgkin lymphoma patients. Lymphopenia (<1 × 109/L) was near universal and time to lymphocyte recovery correlated with cumulative bendamustine dose. No association between lymphopenia severity and duration with infection was observed. Infections occurred in 44% of patients (50% bacterial) with 27% hospitalised; 32% of infections occurred ≥3 months post bendamustine completion. Infection was associated with obinutuzumab and/or maintenance anti-CD20 therapy, prior therapy and advanced stage. Twenty-four opportunistic infections occurred in 21 patients: ten varicella zoster virus (VZV), seven herpes simplex virus (HSV), one cytomegalovirus, one progressive multifocal leucoencephalopathy, one nocardiosis, one Pneumocystis jiroveci pneumonia (PJP) and three other fungal infections. VZV/HSV and PJP prophylaxis were prescribed to 42% and 54% respectively. Fewer VZV/HSV infections occurred in patients receiving prophylaxis (HR 0.14, p = 0.061) while PJP prophylaxis was associated with reduced risk of bacterial infection (HR 0.48, p = 0.004). Our study demonstrates a significant infection risk regardless of lymphopenia severity and supports prophylaxis to mitigate the risk of early and delayed infections.


Asunto(s)
Clorhidrato de Bendamustina , Linfoma no Hodgkin , Linfopenia , Infecciones Oportunistas , Humanos , Clorhidrato de Bendamustina/uso terapéutico , Clorhidrato de Bendamustina/efectos adversos , Clorhidrato de Bendamustina/administración & dosificación , Masculino , Linfoma no Hodgkin/tratamiento farmacológico , Femenino , Persona de Mediana Edad , Anciano , Estudios Retrospectivos , Linfopenia/inducido químicamente , Adulto , Infecciones Oportunistas/prevención & control , Anciano de 80 o más Años , Profilaxis Antibiótica/métodos , Antineoplásicos Alquilantes/efectos adversos , Antineoplásicos Alquilantes/uso terapéutico
10.
J Clin Oncol ; 42(19): 2271-2280, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38531001

RESUMEN

PURPOSE: Nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) is a rare cancer, and large international cooperative efforts are needed to evaluate the significance of clinical risk factors and immunoarchitectural patterns (IAPs) for all stages of pediatric and adult patients with NLPHL. METHODS: Thirty-eight institutions participated in the Global nLPHL One Working Group retrospective study of NLPHL cases from 1992 to 2021. We measured progression-free survival (PFS), overall survival (OS), transformation rate, and lymphoma-specific death rate. We performed uni- and multivariable (MVA) Cox regression stratified by management to select factors for the lymphocyte-predominant international prognostic score (LP-IPS) validated by five-fold cross-validation. RESULTS: We identified 2,243 patients with a median age of 37 years (IQR, 23-51). The median follow-up was 6.3 years (IQR, 3.4-10.8). Most had stage I to II (72.9%) and few B symptoms (9.9%) or splenic involvement (5.4%). IAP was scored for 916 (40.8%). Frontline management included chemotherapy alone (32.4%), combined modality therapy (30.5%), radiotherapy alone (24.0%), observation after excision (4.6%), rituximab alone (4.0%), active surveillance (3.4%), and rituximab and radiotherapy (1.1%). The PFS, OS, transformation, and lymphoma-specific death rates at 10 years were 70.8%, 91.6%, 4.8%, and 3.3%, respectively. On MVA, IAPs were not associated with PFS or OS, but IAP E had higher risk of transformation (hazard ratio [HR], 1.81; P < .05). We developed the LP-IPS with 1 point each for age ≥45 years, stage III-IV, hemoglobin <10.5 g/dL, and splenic involvement. Increasing LP-IPS was significantly associated with worse PFS (HR, 1.52) and OS (HR, 2.31) and increased risk of lymphoma-specific death (HR, 2.63) and transformation (HR, 1.41). CONCLUSION: In this comprehensive study of all ages of patients with NLPHL, we develop the LP-IPS to identify high-risk patients and inform upcoming prospective clinical trials evaluating de-escalation of therapy for patients with low LP-IPS scores (<2).


Asunto(s)
Enfermedad de Hodgkin , Humanos , Enfermedad de Hodgkin/terapia , Enfermedad de Hodgkin/patología , Enfermedad de Hodgkin/mortalidad , Masculino , Adulto , Femenino , Persona de Mediana Edad , Estudios Retrospectivos , Adulto Joven , Pronóstico , Supervivencia sin Progresión , Estadificación de Neoplasias
11.
Haematologica ; 2024 Mar 07.
Artículo en Inglés | MEDLINE | ID: mdl-38450504

RESUMEN

Follicular Lymphoma (FL) treatment initiation is largely determined by tumor burden and symptoms. In the pre-rituximab era, the Group d'Etude des Lymphomes Folliculaires (GELF) developed widely adopted criteria to identify high tumor burden FL patients to harmonize clinical trial populations. The utilization of GELF criteria (GELFc) in routine therapeutic decision-making is poorly described. This multicenter retrospective study evaluated patterns of GELFc at presentation and GELFc utilization in therapeutic decision-making in newly diagnosed, advanced stage rituximab-era FL. Associations between GELFc, treatment given, and patient survival were analyzed in 300 eligible cases identified between 2002-2019. 163 (54%) had ≥1 GELFc at diagnosis. The presence or cumulative number of GELFc did not predict PFS in patients undergoing watch-and-wait (WW) or those receiving systemic treatment. Of interest, in patients with ≥1 GELFc, 16/163 (10%) underwent initial watch-and-wait (comprising 22% of the watchand- wait cohort). In those receiving systemic therapy +/- radiotherapy, 74/215 (34%) met no GELFc. Our data suggest clinicians are using adjunctive measures to make decisions regarding treatment initiation in a significant proportion of patients. By restricting FL clinical trial eligibility only to those meeting GELFc, reported outcomes may not be applicable to a significant proportion of patients treated in routine care settings.

12.
Blood Adv ; 8(3): 736-745, 2024 02 13.
Artículo en Inglés | MEDLINE | ID: mdl-38127277

RESUMEN

ABSTRACT: 18F-fluorodeoxyglucose-positron emission tomography (FDG-PET) is a valuable prognostic tool in modern lymphoma care. In this study, we explored the use of quantitative FDG-PET parameters in predicting the histology of suspected relapsed or refractory (R/R) lymphoma. We retrospectively analyzed 290 FDG-PET scans performed for suspected R/R lymphoma. FDG-PET parameters measured were maximum and mean standardized uptake value (SUVMax and SUVMean), total metabolic tumor volume, and total lesion glycolysis (TLG). Receiver operating characteristic curve analysis was used to obtain the optimal thresholds that best discriminate (1) benign vs R/R lymphoma, (2) indolent vs aggressive non-Hodgkin lymphoma (NHL), and (3) aggressive transformation of indolent NHL. We found that although all 4 FDG-PET parameters discriminated R/R lymphoma from benign histology, TLG was the best performing parameter (optimal cut-off ≥245, sensitivity 63%, specificity 86%, positive predictive value [PPV] 97%, negative predictive value [NPV] 30%, area under the curve [AUC] 0.798, and P < .001). SUVMax discriminated aggressive from indolent NHL with modest accuracy (optimal threshold ≥15, sensitivity 46%, specificity 79%, PPV 82%, NPV 38%, AUC 0.638, and P < .001). In patients with a prior diagnosis of indolent NHL, SUVMax was a modest predictor of transformation (optimal cut-off ≥12, sensitivity 71%, specificity 61%, PPV 50%, NPV 78%, AUC 0.676, and P .006). Additionally, SUVMax ≥25 and an increase in SUVMax (ΔSUVMax) from baseline ≥150% were highly specific (96% and 94%, respectively). These FDG-PET thresholds can aid in identification of suspected R/R lymphoma cases with higher likelihood of R/R disease and aggressive transformation of indolent NHL, guiding the necessity and urgency of biopsy.


Asunto(s)
Linfoma no Hodgkin , Linfoma , Humanos , Fluorodesoxiglucosa F18 , Estudios Retrospectivos , Tomografía de Emisión de Positrones/métodos , Linfoma/diagnóstico por imagen , Linfoma no Hodgkin/diagnóstico por imagen , Linfoma no Hodgkin/patología
13.
Semin Hematol ; 60(5): 338-345, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-38072722

RESUMEN

Diffuse large B-cell lymphoma (DLBCL) is the most common lymphoma and a heterogeneous B-cell disease. The majority of patients with newly diagnosed disease are cured with first-line combination immunochemotherapy treatment however, those who experience treatment failure have dismal outcomes. Antibody therapies and immunotherapy have provided the single most major advance in the treatment of DLBCL in the last 4 decades. Rituximab, the first immunotherapy, and a monoclonal antibody targeting CD20, improved DLBCL overall survival when added to chemotherapy 2 decades ago. Since then, the advent of further "naked" monoclonal antibodies that target malignant B-cells or stimulate the immune system to kill cancer, as well as antibody-drug conjugates and bispecific antibodies have all entered the DLBCL armamentarium; with 5 antibody therapy approvals in the last 6 years alone. Here we review the literature on antibodies and immunotherapies for DLBCL and the future directions involving this successful group of drugs.


Asunto(s)
Linfoma de Células B Grandes Difuso , Humanos , Anticuerpos Monoclonales de Origen Murino/uso terapéutico , Rituximab/uso terapéutico , Linfoma de Células B Grandes Difuso/tratamiento farmacológico , Linfoma de Células B Grandes Difuso/diagnóstico , Inmunoterapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico
15.
Cancers (Basel) ; 15(21)2023 Oct 30.
Artículo en Inglés | MEDLINE | ID: mdl-37958391

RESUMEN

Classical Hodgkin lymphoma (cHL) accounts for 0.4% of all new cancer cases globally. Despite high cure rates with standard treatment, approximately 15% of patients still experience relapsed or refractory (RR) disease, and many of these eventually die from lymphoma-related causes. Exciting new targeted agents such as anti-PD-1 agents and brentuximab vedotin have changed the therapeutic paradigm beyond chemotherapy and radiotherapy alone. Advances in understanding of the molecular biology are providing insights in the context of novel therapies. The signature histology of cHL requires the presence of scant malignant Hodgkin Reed-Sternberg cells (HRSCs) surrounded by a complex immune-rich tumour microenvironment (TME). The TME cellular composition strongly influences outcomes, yet knowledge of the precise characteristics of TME cells and their interactions with HRSCs is evolving. Novel high-throughput technologies and single-cell sequencing allow deeper analyses of the TME and mechanisms elicited by HRSCs to propagate growth and avoid immune response. In this review, we explore the evolution of knowledge on the prognostic role of immune cells within the TME and provide an up-to-date overview of emerging prognostic data on cHL from new technologies that are starting to unwind the complexity of the cHL TME and provide translational insights into how to improve therapy in the clinic.

16.
J Clin Oncol ; 41(35): 5376-5387, 2023 Dec 10.
Artículo en Inglés | MEDLINE | ID: mdl-37797284

RESUMEN

PURPOSE: CNS progression or relapse is an uncommon but devastating complication of aggressive B-cell lymphoma. There is no consensus regarding the optimal approach to CNS prophylaxis. This study was designed to determine whether high-dose methotrexate (HD-MTX) is effective at preventing CNS progression in patients at high risk of this complication. PATIENTS AND METHODS: Patients age 18-80 years with aggressive B-cell lymphoma and high risk of CNS progression, treated with curative-intent anti-CD20-based chemoimmunotherapy, were included in this international, retrospective, observational study. Cause-specific hazard ratios (HRs) and cumulative risks of CNS progression were calculated according to use of HD-MTX, with time to CNS progression calculated from diagnosis for all patients (all-pts) and from completion of frontline systemic lymphoma induction therapy, for patients in complete response at completion of chemoimmunotherapy (CR-pts). RESULTS: Two thousand four hundred eighteen all-pts (HD-MTX; n = 425) and 1,616 CR-pts (HD-MTX; n = 356) were included. CNS International Prognostic Index was 4-6 in 83.4% all-pts. Patients treated with HD-MTX had a lower risk of CNS progression (adjusted HR, 0.59 [95% CI, 0.38 to 0.90]; P = .014), but significance was not retained when confined to CR-pts (adjusted HR, 0.74 [95% CI, 0.42 to 1.30]; P = .29), with 5-year adjusted risk difference of 1.6% (95% CI, -1.5 to 4.4; all-pts) and 1.4% (95% CI, -1.5 to 4.1; CR-pts). Subgroups were underpowered to draw definitive conclusions regarding the efficacy of HD-MTX in individual high-risk clinical scenarios; however, there was no clear reduction in CNS progression risk with HD-MTX in any high-risk subgroup. CONCLUSION: In this large study, high-risk patients receiving HD-MTX had a 7.2% 2-year risk of CNS progression, consistent with the progression risk in previously reported high-risk cohorts. Use of HD-MTX was not associated with a clinically meaningful reduction in risk of CNS progression.


Asunto(s)
Neoplasias del Sistema Nervioso Central , Linfoma de Células B , Metotrexato , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Humanos , Persona de Mediana Edad , Adulto Joven , Neoplasias del Sistema Nervioso Central/tratamiento farmacológico , Neoplasias del Sistema Nervioso Central/patología , Neoplasias del Sistema Nervioso Central/prevención & control , Linfoma de Células B/tratamiento farmacológico , Metotrexato/administración & dosificación , Estudios Retrospectivos
17.
Blood Adv ; 7(22): 6801-6811, 2023 11 28.
Artículo en Inglés | MEDLINE | ID: mdl-37682792

RESUMEN

The primary analysis of MAGNOLIA, an open-label, single-arm, multicenter, phase 2 study, demonstrated that the next-generation Bruton tyrosine kinase (BTK) inhibitor zanubrutinib provided a high overall response rate (ORR) in patients with relapsed/refractory marginal zone lymphoma (R/R MZL), with a favorable safety/tolerability profile. Presented here, is the final analysis of MAGNOLIA, performed to characterize the durability of response and longer-term safety and tolerability. Zanubrutinib (160 mg twice daily) was evaluated in 68 patients with R/R MZL who had received at least 1 anti-CD20-directed regimen. The primary end point was independent review committee (IRC)-assessed ORR. Secondary end points included investigator-assessed ORR, duration of response (DOR), progression-free survival (PFS), overall survival (OS), health-related quality of life, safety, and tolerability. With a median follow-up of 27.4 months, the IRC-assessed ORR was 68.2% (95% confidence interval [CI], 55.6-79.1), with a 24-month DOR event-free rate of 72.9% (95% CI, 54.4-84.9). PFS and OS at 24 months were 70.9% (95% CI, 57.2-81.0) and 85.9% (95% CI, 74.7-92.4), respectively. The zanubrutinib safety profile was consistent with the primary analysis, with no new safety signals observed. Atrial fibrillation/flutter (n = 2 [2.9%]) and hypertension (n = 3 [4.4%]) were uncommon. Neutropenia (n = 8 [11.8%]) was the most common grade ≥3 adverse event. In this final analysis of MAGNOLIA, zanubrutinib demonstrated sustained clinical responses beyond 2 years, with 73% of responders alive and progression free. Zanubrutinib continued to demonstrate a favorable safety/tolerability profile with the additional time on treatment. This trial was registered at www.clinicaltrials.gov as #NCT03846427.


Asunto(s)
Linfoma de Células B de la Zona Marginal , Magnolia , Humanos , Linfoma de Células B de la Zona Marginal/tratamiento farmacológico , Recurrencia Local de Neoplasia/tratamiento farmacológico , Calidad de Vida , Resultado del Tratamiento
19.
Blood Adv ; 7(14): 3531-3539, 2023 07 25.
Artículo en Inglés | MEDLINE | ID: mdl-36947202

RESUMEN

Using tissue whole exome sequencing (WES) and circulating tumor cell-free DNA (ctDNA), this Australasian Leukaemia & Lymphoma Group translational study sought to characterize primary and acquired molecular determinants of response and resistance of marginal zone lymphoma (MZL) to zanubrutinib for patients treated in the MAGNOLIA clinical trial. WES was performed on baseline tumor samples obtained from 18 patients. For 7 patients, ctDNA sequence was interrogated using a bespoke hybrid-capture next-generation sequencing assay for 48 targeted genes. Somatic mutations were correlated with objective response data and survival analysis using Fisher exact test and Kaplan-Meier (log-rank) method, respectively. Baseline WES identified mutations in 33 of 48 (69%) prioritized genes. NF-κB, NOTCH, or B-cell receptor (BCR) pathway genes were implicated in samples from 16 of 18 patients (89%). KMT2D mutations (n = 11) were most common, followed by FAT1 (n = 9), NOTCH1, NOTCH2, TNFAIP3 (n = 5), and MYD88 (n = 4) mutations. MYD88 or TNFAIP3 mutations correlated with improved progression-free survival (PFS). KMT2D mutations trended to worse PFS. Acquired resistance mutations PLCG2 (R665W/R742P) and BTK (C481Y/C481F) were detected in 2 patients whose disease progressed. A BTK E41K noncatalytic activating mutation was identified before treatment in 1 patient who was zanubrutinib-refractory. MYD88, TNFAIP3, and KMT2D mutations correlate with PFS in patients with relapsed/refractory MZL treated with zanubrutinib. Detection of acquired BTK and PLCG2 mutations in ctDNA while on therapy is feasible and may herald clinical disease progression. This trial was registered at https://anzctr.org.au/ as #ACTRN12619000024145.


Asunto(s)
Linfoma de Células B de la Zona Marginal , Factor 88 de Diferenciación Mieloide , Humanos , Factor 88 de Diferenciación Mieloide/genética , Factor 88 de Diferenciación Mieloide/metabolismo , Mutación , FN-kappa B/metabolismo , Linfoma de Células B de la Zona Marginal/tratamiento farmacológico , Linfoma de Células B de la Zona Marginal/genética , Linfoma de Células B de la Zona Marginal/patología , Inhibidores de Proteínas Quinasas
20.
Leukemia ; 37(5): 1092-1102, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36906715

RESUMEN

Immune evasion, due to abnormal expression of programmed-death ligands 1 and 2 (PD-L1/PD-L2), predicts poor outcomes with chemoimmunotherapy in diffuse large B-cell lymphoma (DLBCL). Immune checkpoint inhibition (ICI) has limited efficacy at relapse but may sensitise relapsed lymphoma to subsequent chemotherapy. ICI delivery to immunologically intact patients may thus be the optimal use of this therapy. In the phase II AvR-CHOP study, 28 patients with treatment-naive stage II-IV DLBCL received sequential avelumab and rituximab priming ("AvRp;" avelumab 10 mg/kg and rituximab 375 mg/m2 2-weekly for 2 cycles), R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisolone for 6 cycles) and avelumab consolidation (10 mg/kg 2-weekly for 6 cycles). Grade 3/4 immune-related adverse events occurred in 11%, meeting the primary endpoint of a grade ≥3 irAE rate of <30%. R-CHOP delivery was not compromised but one patient ceased avelumab. Overall response rates (ORR) after AvRp and R-CHOP were 57% (18% CR) and 89% (all CR). High ORR to AvRp was observed in primary mediastinal B-cell lymphoma (67%; 4/6) and molecularly-defined EBV-positive DLBCL (100%; 3/3). Progression during AvRp was associated with chemorefractory disease. Two-year failure-free and overall survival were 82% and 89%. An immune priming strategy with AvRp, R-CHOP and avelumab consolidation shows acceptable toxicity with encouraging efficacy.


Asunto(s)
Linfoma de Células B Grandes Difuso , Recurrencia Local de Neoplasia , Humanos , Rituximab , Vincristina , Recurrencia Local de Neoplasia/tratamiento farmacológico , Linfoma de Células B Grandes Difuso/patología , Ciclofosfamida , Prednisona , Doxorrubicina , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Resultado del Tratamiento
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...