Treatment Discontinuation Patterns for Patients With Chronic Lymphocytic Leukemia in Real-World Settings: Results From a Multi-Center International Study

Introduction: This study assessed treatment discontinuation patterns and reasons among chronic lymphocytic leukemia (CLL) patients initiating first-line (1L) and second-line (2L) treatments in real-world settings. Materials and / Methods: Using deidentified electronic medical records from the CLL Collaborative Study of Real-World Evidence, premature treatment discontinuation was assessed among FCR, BR, BTKi-based, and BCL-2-based regimen cohorts. / Results: Of 1364 1L patients (initiated in 1997-2021), 190/13.9% received FCR (23.7% discontinued prematurely); 255/18.7% received BR (34.5% discontinued prematurely); 473/34.7% received BTKi-based regimens, of whom 28.1% discontinued prematurely; and 43/3.2% received venetoclax-based regimens, of whom 16.3% discontinued prematurely (venetoclax monotherapy: 7/0.5%, of whom 42.9% discontinued; VG/VR: 36/2.6%, of whom 11.1% discontinued). The most common reasons for treatment discontinuation were adverse events (FCR: 25/13.2%; BR: 36/14.1%; BTKi-based regimens: 75/15.9%) and disease progression (venetoclax-based: 3/7.0%). Of 626 2L patients, 20/3.2% received FCR (50.0% discontinued); 62/9.9% received BR (35.5% discontinued); 303/48.4% received BTKi-based regimens, of whom 38.0% discontinued; and 73/11.7% received venetoclax-based regimens, of whom 30.1% discontinued (venetoclax monotherapy: 27/4.3%, of whom 29.6% discontinued; VG/VR: 43/6.9%, of whom 27.9% discontinued). The most common reasons for treatment discontinuation were adverse events (FCR: 6/30.0%; BR: 11/17.7%; BTKi-based regimens: 60/19.8%; venetoclax-based: 6/8.2%). / Conclusion: The findings of this study highlight the continued need for tolerable therapies in CLL, with finite therapy offering a better tolerated option for patients who are newly diagnosed or relapsed/refractory to prior treatments

Efficacy of bendamustine and rituximab in unfit patients with previously untreated chronic lymphocytic leukemia. Indirect comparison with ibrutinib in a real-world setting. A GIMEMA-ERIC and US study

Limited information is available on the efficacy of front-line bendamustine and rituximab (BR) in chronic lymphocytic leukemia (CLL) with reduced renal function or coexisting conditions. We therefore analyzed a cohort of real-world patients and performed a matched adjusted indirect comparison with a cohort of patients treated with ibrutinib. One hundred and fifty-seven patients with creatinine clearance (CrCl) 6 were treated with BR. The median age was 72 years; 69% of patients had ≥2 comorbidities and the median CrCl was 59.8 mL/min. 17.6% of patients carried TP53 disruption. The median progression-free survival (PFS) was 45 months; TP53 disruption was associated with a shorter PFS (P = 0.05). The overall survival (OS) at 12, 24, and 36 months was 96.2%, 90.1%, and 79.5%, respectively. TP53 disruption was associated with an increased risk of death (P = 0.01). Data on 162 patients ≥65 years treated with ibrutinib were analyzed and compared with 165 patients ≥65 years treated with BR. Factors predicting for a longer PFS at multivariable analysis in the total patient population treated with BR and ibrutinib were age (HR 1.06, 95% CI 1.02-1.10, P < 0.01) and treatment with ibrutinib (HR 0.55, 95% CI 0.33-0.93, P = 0.03). In a post hoc analysis of patients in advanced stage, a significant PFS advantage was observed in patient who had received ibrutinib (P = 0.03), who showed a trend for OS advantage (P = 0.08). We arrived at the following conclusions: (a) BR is a relatively effective first-line regimen in a real-world population of unfit patients without TP53 disruption, (b) ibrutinib provided longer disease control than BR in patients with advanced disease stage

A retrospective comparison of venetoclax alone or in combination with an anti-CD20 monoclonal antibody in R/R CLL

Venetoclax (VEN) is approved for relapsed/refractory (R/R) chronic lymphocytic leukemia (CLL) as monotherapy (VENmono) or in combination with rituximab. Whether VEN plus anti-CD20 (VENcombo) is superior to VENmono is unknown. We conducted a multicenter, retrospective cohort analysis comparing 321 CLL patients treated with VENmono vs VENcombo across the United States and the United Kingdom. We examined demographics, baseline characteristics, dosing, adverse events, response rates, and outcomes. The primary endpoints were progression-free survival (PFS) and overall survival (OS), estimated by Kaplan-Meier method, in patients treated with VENmono vs VENcombo. Univariate and bivariate analyses were performed with COX regression. Three hundred twenty-one CLL patients were included (3 median prior treatments, 78% prior ibrutinib). The overall response rates (ORRs) were similar (VENmono, 81% ORR, 34% complete remission [CR] vs VENcombo, 84% ORR, 32% CR). With a median follow-up of 13.4 months, no differences in PFS and OS were observed between the groups. In unadjusted analyses, the hazard ratios (HRs) for PFS and OS for VENmono vs VENcombo were HR 1.0 (95% confidence interval [CI], 0.6-1.8; P = .7) and HR 1.2 (95% CI, 0.6-2.3; P = .5), respectively. When adjusting for differences between the cohorts, the addition of an anti-CD20 antibody in combination with VEN did not impact PFS (HR, 1.0; 95% CI, 0.5-2.0; P = .9) or OS (HR, 1.1; 95% CI, 0.4-2.6; P = .8). We demonstrate comparable efficacy between VENmono and VENcombo in a heavily pretreated, high-risk, retrospective cohort, in terms of both response data and survival outcomes. Prospective studies are needed to validate these findings

The Impact of Age on Survival in CLL Patients Receiving Ibrutinib as Initial Therapy

Introduction: Recent randomized trials have demonstrated the efficacy of ibrutinib-based therapy in the treatment of patients with CLL. In Alliance A041202, a higher than expected number of unexplained deaths were reported with front-line ibrutinib in a patient population aged at least 65 years compared to ECOG 1912, which included patients up to 70 years of age. Methods: Therefore, we conducted a retrospective analysis to investigate whether ibrutinib was associated with a greater mortality in older patients outside of a clinical trial setting. This multicenter analysis was performed by investigators at 20 academic and community practices. Results: Amongst the 391 patients included, there was no correlation between age and response rate, PFS, or OS. However, there was a trend to higher rate of deaths in patients >65-years-old (8.7% vs 3.8%, p=0.097), with an increased number of early deaths (13 vs 4, p=0.3). Conclusion: These data suggest greater intolerance, and possibly mortality, with ibrutinib in an older population. Patients should be educated regarding the potential complications related to ibrutinib and symptoms of concern to report

Association Of Large Granular Lymphocytic Leukemia (LGL) With B-Cell Lymphoproliferative Disorders

Abstract Introduction Large granular lymphocytic (LGL) leukemia is an uncommon disease, characterized by a clonal proliferation of mature, post-thymic T-cells, typically CD3+, CD4-, CD8+, CD16+, CD57+ phenotype, representing constitutively active T-cells Less commonly, LGL leukemia is derived from CD3-, CD56+ natural killer (NK) cells. Clonal T-LGLs escape apoptosis by failure to respond to the Fas/Fas ligand (FasL) pathway. Activating mutations in the STAT3gene occur frequently in LGL leukemia, and may play a role in pathogenesis. Autoimmune disorders are frequently associated with LGL leukemia (∼1/3 present with rheumatoid arthritis). The association between LGL leukemia and B-cell lymphoproliferative disorders has been reported, often with low-grade histologies, but is deemed uncommon and the pathogenesis is not well established. We have analyzed a series of patients (pts) diagnosed with both LGL leukemia or expansion and clonal B-cell disorders. Patients and methods Pts with NK or T-LGL leukemia or expansion who were evaluated at Fox Chase Cancer Center or the Cleveland Clinic Taussig Cancer Institute were reviewed, after Institutional Review Board approval. Inclusion criteria were age ≥ 18 yrs and diagnosis of both LGL and B-cell lymphoproliferative disorder. Results One hundred and twenty six pts with a diagnosis of T-LGL leukemia, NK-LGL leukemia or T-LGL expansion were identified. Of these, 44 (34.9%) pts were diagnosed with a clonal B-cell disorder. Twenty-six pts (20.6%) were diagnosed with a clonal B-cell disorder concomitantly with or shortly after the LGL diagnosis, 15 of whom presented with monoclonal gammopathy of unknown significance (MGUS) as their B-cell disorder, 9 with monoclonal B-cell lymphocytosis (MBL), 5 of whom also had monoclonal gammopathy. Eighteen pts (14.2%) had a previous diagnosis of clonal B-cell disorder, including diffuse large B cell lymphoma (DLBCL) (N= 6), CLL (N = 3), mantle cell lymphoma (N=3), multiple myeloma (N = 2), Hodgkin lymphoma (N = 2), Burkitt lymphoma (N = 1) and hairy cell leukemia (N = 1). Fifteen pts (11.9%) received treatment prior to the diagnosis of LGL, 10 of them (7.9%) with regimens including rituximab. The median time from completion of last treatment with rituximab to diagnosis of LGL disorder was 33 months. An additional patient with prior DLBCL was diagnosed with LGL shortly after receiving an oral SYK inhibitor. Two illustrative patients had unexpectedly prolonged remissions of their B cell disorder. A 66 years old man with multiple myeloma who achieved complete remission (CR) after 8 months of bortezomib therapy was then diagnosed with T-LGL, and his myeloma is in ongoing remission now 5 years after T-LGL diagnosis without further therapy. A 66 years old woman with relapsed DLBCL treated with 2ndline immunochemotherapy (R-ICE) for 3 cycles developed lymphocytosis and was diagnosed with T-LGL. With no further therapy, DLBCL is in ongoing remission now 5 years after diagnosis of T-LGL. Discussion We report a large series of patients with both clonal B-cell disorders and LGL. Where diagnosis of B-cell disorder and LGL are concurrent, we hypothesize an underlying immune dysregulation leading to both B-cell and T-cell proliferations. Where B-cell disorder precedes LGL, we hypothesize that the underlying disease and/or its treatment creates the environment for LGL, either directly allowing LGL expansion or permitting persistence of antigens that drive LGL expansion. Most pts with antecedent B lymphoma received rituximab (R), with a median time from R-treatment to LGL diagnosis of 33 months. Late onset neutropenia (LON) has been linked to bone marrow expansion of LGL in patients treated with rituximab, suggesting a possible pathogenetic role in our cases as well. Further, in some pts primary B-cell malignancies unexpectedly entered prolonged remission after T-LGL developed, suggesting a possible anti-B cell immune component of LGL. Further studies are warranted. Disclosures: No relevant conflicts of interest to declare

Desejo de informação e participação nas decisões terapêuticas em caso de doenças graves em pacientes atendidos em um hospital universitário

OBJETIVO: Avaliar o desejo de pacientes serem informados sobre diagnóstico de doenças graves, de informação às suas famílias e de participação nas decisões terapêuticas. MÉTODOS: 363 pessoas atendidas no ambulatório ou internadas na enfermaria de um serviço universitário de Clínica Geral foram entrevistadas. O questionário continha perguntas sobre desejo de ser informado e de que familiares também fossem informados em casos de diagnósticos de câncer e síndrome da imunodeficiência adquirida (Aids) e de ser informado e participar de decisões terapêuticas em caso de tumores abdominais. RESULTADOS: Homens (96,1%) e mulheres (92,6%) mostraram desejo de serem informados do diagnóstico de câncer e 87,7% dos homens e 84,2% das mulheres desejaram que sua família também fosse informada; 94,2% dos homens e 91% das mulheres afirmaram querer saber do diagnóstico de Aids. Enquanto 86% das mulheres e 76,6% dos homens mostraram desejo de serem informados das opções terapêuticas em caso de tumor abdominal, apenas 58,5% das mulheres e 39,6% dos homens desejaram opinar sobre o tratamento. O desejo de participar das decisões terapêuticas foi menor nos homens, nas pessoas com mais de 60 anos e em quem estava internado (p<0.05). CONCLUSÕES: A grande maioria da população que procura um hospital universitário deseja ser informada sobre suas condições de saúde, incluindo eventuais diagnósticos de doenças graves. Por outro lado, existem vínculos familiares intensos, sendo que os pacientes desejam, também, que suas famílias sejam informadas.<br>BACKGROUND: The purpose of our study was to evaluate the desire of the patients on being informed about diagnosis of severe diseases, the desire to have their families informed about this situation and to participate in therapeutic decisions. METHODS: 363 patients (outpatients and inpatients) of a General Internal Medicine division of a University Hospital were interviewed. The questionnaire contained specific questions on their desire to be informed of the diagnosis in case of cancer or AIDS and on their desire to have their families informed as well. Specific questions on whether they wanted to be informed of and participate of the therapeutic discussion process in case of abdominal tumors were also included. RESULTS: 96.1% of men and 92.6% of women showed the desire of being informed in case of cancer diagnosis and 87.7% of men and 84.2% of women wanted to have their families informed; 94.2% of men and 91% of women wanted to know the diagnosis of AIDS. While 86% of women and 76.6% of men wanted be informed in the case of a diagnosis of an abdominal tumor, only 58.5% of women and 39.6% of men wanted to give their opinion about in the case of different therapeutic alternatives. The desire to participate in therapeutic decisions was significantly lower (p<0.05) in men, people older than 60 years and inpatients. CONCLUSIONS: Our results showed that the great majority of the population that seeks for medical support in a Brazilian university hospital wishes to be informed on this health condition, even in case of serious illness. In addition, there are intense familiar bonds that make patients want to have their families also informed