IgG replacement in multiple myeloma.

T cell engagers (TCE) such as chimeric antigen receptor (CAR) T cell therapy and bispecific antibodies (BiAbs) for the treatment of multiple myeloma (MM) have significantly improved clinical outcomes, but have also raised awareness for ensuing post-treatment secondary immunodeficiency and hypogammaglobulinemia (HG). As patients with MM live longer, recurrent infections become a significant component of therapy-associated morbidity and mortality. Treatment of HG with immunoglobulin G replacement therapy (IgG-RT) has been a mainstay of the primary immunodeficiency (PI) world, and extrapolation to MM has recently started to show promising clinical outcomes. However, IgG-RT initiation, dosing, route, timing, monitoring, and management in MM has not been standardized in the setting of TCE. Progress in MM treatment will involve greater recognition and screening of underlying secondary immunodeficiency, identification of risk-stratification markers, optimizing IgG-RT management, and implementing other approaches to decrease the risk of infection. In this review, we summarize infection risk, risk of HG, and management strategies for IgG-RT in patients with relapsed MM after TCE.

Measurable Residual Disease and Clinical Outcomes in Chronic Lymphocytic Leukemia: A Systematic Review and Meta-Analysis.

Importance: Measurable residual disease (MRD) refers to the presence of disease at low levels not detected by conventional pathologic analysis. The association of MRD status as a surrogate end point of clinical outcome in chronic lymphocytic leukemia (CLL) has not been established in the era of targeted agents. Assessing the association of MRD with progression-free survival (PFS) may improve its role as a surrogate marker and allow its use to accelerate drug development. Objective: To assess the association between MRD and PFS in CLL using data from prospective clinical trials that studied targeted agents or obinutuzumab-based treatment. Data Sources: Clinical studies on CLL were identified via searches of PubMed, Embase, Scopus, and Web of Science from inception through July 31, 2023. Study Selection: Prospective, single-arm, and randomized clinical trials that assessed targeted agents or obinutuzumab-based treatment and reported PFS by MRD status were included. Studies with insufficient description of MRD information were excluded. Data Extraction and Synthesis: Study sample size, median patient age, median follow-up time, line of treatment, MRD detection method and time points, and survival outcomes were extracted. Main Outcomes and Measures: Analyses of survival probabilities and hazard ratios (HRs) were conducted for PFS according to MRD status. Meta-analyses were performed using a random-effects model. Results: A total of 11 prospective clinical trials (9 randomized and 2 nonrandomized) including 2765 patients were analyzed. Achieving undetectable MRD (uMRD) at 0.01% was associated with an HR of 0.28 (95% CI, 0.20-0.39; P < .001) for PFS. Median PFS was not reached in both groups (uMRD vs MRD), but the estimated 24-month PFS was better in the uMRD group (91.9% [95% CI, 88.8%-95.2%] vs 75.3% [95% CI, 64.7%-87.6%]; P < .001). The association of uMRD with PFS was observed in subgroup analyses in the first-line treatment setting (HR, 0.24; 95% CI, 0.18-0.33), relapsed or refractory disease setting (HR, 0.34; 95% CI, 0.16-0.71), and trials using time-limited therapy (HR, 0.28; 95% CI, 0.19-0.40). Conclusions and Relevance: The findings of this systematic review and meta-analysis suggest that assessing MRD status as an end point in clinical trials and as a surrogate of PFS may improve trial efficiency and potentially allow for accelerated drug registration.

Health insurance literacy among patients receiving outpatient cancer treatment.

BACKGROUND: This study examines patients' understanding of health insurance terms and concepts and quantifies health insurance literacy (HIL) levels by key sociodemographic factors. METHODS: This study included 393 adult patients with cancer (>18 years old) receiving treatment in two ambulatory infusion centers: Mayo Clinic in Phoenix, Arizona and the University of Mississippi Medical Center in Jackson, Mississippi. Respondents' perceptions of their HIL were assessed using the Health Insurance Literacy Measure (HILM), a validated 21-item measure of a consumer's ability to select and use health insurance (HIL self-efficacy). Respondents' knowledge of health insurance concepts (HIL knowledge) was measured using 10 items created by the Kaiser Family Foundation. The number of correct answers was categorized into three levels: 0-4 (low knowledge), 5-6 (moderate knowledge), and 7-10 (high knowledge). Multivariable logistic regressions were used to compare correct answers to HIL knowledge questions by HIL self-efficacy. RESULTS: Nearly three-quarters of patients had high HIL self-efficacy and high HIL knowledge (70.5%), understanding basic insurance terms, such as premiums and deductibles. Relatively low percentages of patients correctly answered questions about the meaning of provider networks, health insurance formularies, and calculating out-of-pocket spending in scenarios when insurers pay a portion of allowed charges. Lower HIL knowledge was more common among patients with less educational attainment (

CD19-directed CART Therapy for T cell/Histiocyte Rich Large B-cell Lymphoma.

T-cell/histiocyte-rich large B-cell lymphoma (THRLBCL) is a rare histologic variant of LBCL. Limited data regarding CD19-directed chimeric antigen receptor T-cell (CART) therapy in relapsed/refractory (R/R) THRLBCL suggest poor efficacy. We investigated CART outcomes for R/R THRLBCL through the CIBMTR registry. A total of 58 adult patients with R/R THRLBCL who received commercial CD19-CART between 2018-2022 were identified. Most patients (67%) had early relapse of disease (45% primary refractory) with a median of 3 (range: 1-7) prior therapies and were treated with Axicabtagene ciloleucel (69%). At median follow-up of 23 months post-CART, 2-year overall and progression-free survival were 42% (95% CI: 27-57) and 29% (95% CI: 17-43), respectively. In univariable analysis, poor performance status pre-CART was associated with higher mortality (HR 2.35, 95%CI 1.02-5.5). The 2-year cumulative incidences of relapse/progression and non-relapse mortality were 69% and 2%, respectively. Grade ≥3 CRS and ICANS occurred in 7% and 15% of patients, respectively. In this largest analysis of CD19-CART for R/R THRLBCL, approximately 30% of patients were alive and progression-free 2 years post-CART. Despite a high incidence of progression (69% at 2 years), these results suggest a subset of patients with R/R THRLBCL may have durable responses with CART.

Relationships Among Health Insurance Literacy, Financial Toxicity, and Sociodemographic Factors in Patients With Cancer.

PURPOSE: The objective of the study was to describe the prevalence of health insurance literacy (HIL) and investigate how patient-reported outcome measures assessing HIL are related to financial toxicity in patients with cancer. METHODS: We assessed HIL and financial toxicity in 404 patients enrolled between December 2019 and January 2021 at two medical centers in the United States. We conducted exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) to explore and test the relationships among the factors and items. We fit structural equation models (SEMs) to find the relationships among the factors and sociodemographic/clinical characteristics. RESULTS: The EFA revealed items loaded on four factors: knowledge about health insurance, confidence related to HIL (HIL confidence), information-seeking behavior related to health insurance, and financial toxicity. The four-factor CFA model had good fit statistics (comparative fit index, 0.960; Tucker-Lewis index, 0.958; root mean square error of approximation, 0.046; and standardized root mean square residual, 0.086). In SEM, income, education level, and race positively predicted knowledge about health insurance. Knowledge about health insurance and number of total lines of cancer treatment was positively associated with HIL confidence. Higher income, older age, and HIL confidence were associated with less financial toxicity. Higher levels of financial toxicity, HIL confidence, and knowledge were associated with greater information-seeking behavior. CONCLUSION: Our findings showed how different aspects of HIL are related to financial toxicity even after adjustment for sociodemographic and clinical characteristics. Future studies should investigate the longitudinal relationships among these factors to help develop interventions to mitigate financial toxicity.

Treatment of Relapsed B/T-cell Mixed Phenotype Acute Leukemia With Blinatumomab.

Here, we describe the treatment of a patient with relapsed/refractory B/T mixed phenotype acute leukemia (MPAL) using blinatumomab monotherapy, the first bispecific T cell engager (BiTE) approved by the FDA for relapsed/refractory B cell acute lymphoblastic leukemia (B-ALL). A 64-year-old man with a history of stage 3 chronic kidney disease and type 2 diabetes mellitus was discovered to have B/T MPAL on bone marrow biopsy during hospitalization for dyspnea due to pulmonary embolism. The patient achieved brief remission with blinatumomab treatment before succumbing to neutropenic sepsis. The lack of sufficient data to guide therapy in MPAL remains a challenge, highlighting the potential of new targeted approaches such as blinatumomab to improve outcomes in relapsed/refractory MPAL.

Measurable Residual Disease in Chronic Lymphocytic Leukemia: Current Understanding and Evolving Role in Clinical Practice.

OPINION STATEMENT: Treatment of chronic lymphocytic leukemia (CLL) has evolved dramatically during the last decade, from chemoimmunotherapy (CIT)-based therapies to newer B-cell receptor (BCR) signaling targeting agents, which are sometimes given as continuous schemes. Response to treatment was traditionally defined according to clinical variables designed to assign a response category. Interest in assessing for deeper responses in CLL by the means of measurable residual disease (MRD) testing has been the subject of research during the last several years. Analyses and sub-analyses of clinical trials have shown that achieving undetectable MRD (uMRD) in CLL is an important prognostic factor. In this review, we summarize the available evidence about MRD in CLL, from the various assays available for measurement, the compartment to test, the impact of reaching uMRD according to the treatment regimen, and the results of fixed duration treatment guided by MRD trials. Finally, we summarize how MRD can be incorporated in clinical practice and how it may guide fixed duration treatment in the future should evidence continue to accumulate in that direction.

Allogeneic Hematopoietic Stem Cell Transplant for Diffuse Large B-Cell Lymphoma: Evolving Role in the Era of CAR T-Cell Therapy.

PURPOSE OF REVIEW: Diffuse large B-cell lymphoma (DLBCL) is the most common aggressive lymphoma in adults. Although curable in the majority of cases, a substantial portion of patients will experience disease relapse and will die from their lymphoma. This review is aimed at summarizing the role of allogeneic hematopoietic stem cell transplant (allo-HSCT) in patients with relapsed DLBCL with a focus on its role in the era of CAR T-cell therapy RECENT FINDINGS: Allo-HSCT is primarily reserved for patients who experience disease progression or relapse after CAR T-cell therapy, largely due to the high non-relapse mortality (NRM) associated with the procedure. Disease status at the time of allo-HSCT is prognostic with complete remission (CR) associated with better outcomes. Reduced-intensity conditioning (RIC) is likely as effective as myeloablative conditioning (MAC) with less toxicity. In patients with multiply relapsed disease, including after auto-HSCT and CAR T-cell therapy, approximately one-third can be cured with allo-HSCT. Allo-HSCT should be considered a treatment modality for fit adults without major comorbid conditions whose disease can be controlled with emerging treatment modalities (e.g., bispecifics, antibody-drug conjugates).

Association of Health Insurance Literacy With Financial Hardship in Patients With Cancer.

Importance: Patient-reported financial hardship is an increasing challenge in cancer care delivery. Health insurance literacy and its association with financial hardship in patients with cancer, especially after controlling for financial literacy, have not been well examined. Objective: To examine the prevalence of and factors in the association between health insurance literacy and financial literacy as well as the overall and individual domains of financial hardship and their association with health insurance literacy, both independently and when adjusted for financial literacy, in patients with cancer. Design, Setting, and Participants: This cross-sectional survey study recruited and enrolled patients from 2 separate ambulatory infusion centers at Mayo Clinic Arizona in Phoenix, Arizona, and the University of Mississippi Medical Center in Jackson, Mississippi. Adult patients aged 18 years or older were enrolled from December 2019 to February 2020 and from August to October 2020 at Mayo Clinic Arizona (n = 299) and from September 2020 through January 2021 at the University of Mississippi Medical Center (n = 105). Survey respondents received a $5 gift card. Exposures: Surveys included questions about sociodemographic characteristics, health insurance literacy and financial literacy, financial knowledge, and financial hardship and its domains (material hardship, psychological hardship, and behavioral hardship). Main Outcomes and Measures: Financial hardship was assessed using the COST-FACIT (Comprehensive Score for Financial Toxicity-Functional Assessment of Chronic Illness Therapy) measure and National Health Interview Survey questions to capture information about the domains of financial hardship. The Health Insurance Literacy Measure is a validated 21-item measure of a consumer's ability to select and use health insurance. Five questions from the National Financial Capability Study assessed financial literacy. Results: A total of 404 participants were enrolled in the study. Median (IQR) age of the respondents was 63 (54-71) years, and 219 were women (54%), 307 were non-Hispanic White individuals (76%), 153 (38%) had private insurance, and 289 (72%) had solid tumors. Overall financial hardship (denoted by median COST-FACIT score <27 points) was reported by 49% (95% CI, 44%-53%) of the cohort. Prevalence of financial hardship was higher using the National Health Interview Survey questions, with 68% (95% CI, 63%-72%) of respondents reporting at least 1 hardship domain (n = 276). Sixty-six percent (95% CI, 60%-69%) of respondents (n = 265) had a high level of financial literacy. The mean (SD) Health Insurance Literacy Measure score was 64.9 (13.3) points. In multivariable analyses, each 10-point increase in the Health Insurance Literacy Measure score was associated with lower odds of financial hardship (odds ratio, 0.82; 95% CI, 0.68-0.99; P = .04). However, this association was no longer significant after adjusting for financial literacy. Conclusions and Relevance: Results of this study showed that, despite a high level of health insurance literacy and financial literacy, the prevalence of financial hardship was high. Although there were lower odds of financial hardship with increased health insurance literacy, the association was no longer significant when financial literacy was added to the model, suggesting that a high level of financial literacy may help mitigate the adverse outcome of lower health insurance literacy levels in patients with cancer.

The frequency of medical reversals in a cross-sectional analysis of high-impact oncology journals, 2009-2018.

BACKGROUND: Identifying ineffective practices that have been used in oncology is important in reducing wasted resources and harm. We sought to examine the prevalence of practices that are being used but have been shown in RCTs to be ineffective (medical reversals) in published oncology studies. METHODS: We cross-sectionally analyzed studies published in three high-impact oncology medical journals (2009-2018). We abstracted data relating to the frequency and characterization of medical reversals. RESULTS: Of the 64 oncology reversals, medications (44%) represented the most common intervention type (39% were targeted). Fourteen (22%) were funded by pharmaceutical/industry only and 56% were funded by an organization other than pharmaceutical/industry. The median number of years that the practice had been in use prior to the reversal study was 9 years (range 1-50 years). CONCLUSION: Here we show that oncology reversals most often involve the administration of medications, have been practiced for years, and are often identified through studies funded by non-industry organizations.