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Arya S, Mozessohn L, Gong I, Faught N, Liu N, Singh S, Chan K, Cheung MC. The impact of marginalization on diffuse large B-cell lymphoma overall survival: a retrospective cohort study. Leuk Lymphoma 2024:1-9. [PMID: 38265355 DOI: 10.1080/10428194.2024.2306463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/12/2024] [Indexed: 01/25/2024]
Abstract
The aim of this study was to describe the impact of marginalization on DLBCL overall survival (OS) within the Canadian setting. We conducted a population-based retrospective cohort study of adult patients with newly diagnosed DLBCL in Ontario between 1 January 2005 and 31 December 2017 receiving a rituximab-containing chemotherapy regimen with curative intent followed until 1 March 2020. Our primary exposure of interest was the Ontario Marginalization Index (ON-Marg). The primary outcome was 2-year OS, accounting for patient age, sex, cancer characteristics, comorbidity burden, and rural dwelling status. While two-year overall survival was inferior for individuals in the most deprived marginalization quintile (70.4% Q5 vs. 76.0% Q1), after adjustment for relevant covariates neither the composite ON-Marg nor any of its dimensions had a significant effect. Within the Canadian context, among patients who receive chemotherapy, marginalization may not have a significant association with overall survival when accounting for key patient covariates, lending support for preserved outcomes.
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Affiliation(s)
- Sumedha Arya
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Lee Mozessohn
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
- Sunnybrook Odette Cancer Centre, Toronto, Ontario, Canada
- ICES, Toronto, Ontario, Canada
| | - Inna Gong
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | | | | | - Simron Singh
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
- Sunnybrook Odette Cancer Centre, Toronto, Ontario, Canada
- ICES, Toronto, Ontario, Canada
| | - Kelvin Chan
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
- Sunnybrook Odette Cancer Centre, Toronto, Ontario, Canada
- ICES, Toronto, Ontario, Canada
| | - Matthew C Cheung
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
- Sunnybrook Odette Cancer Centre, Toronto, Ontario, Canada
- ICES, Toronto, Ontario, Canada
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Lee SF, Evens AM, Ng AK, Luque-Fernandez MA. Socioeconomic inequalities in treatment and relative survival among patients with diffuse large B-cell lymphoma: a Hong Kong population-based study. Sci Rep 2021; 11:17950. [PMID: 34504223 PMCID: PMC8429768 DOI: 10.1038/s41598-021-97455-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 08/09/2021] [Indexed: 12/24/2022] Open
Abstract
The influence of socioeconomic status (SES) on access to standard chemotherapy and/or monoclonal antibody therapy, and associated secular trends, relative survival, and excess mortality, among diffuse large B-cell lymphoma (DLBCL) patients is not clear. We conducted a Hong Kong population-based cohort study and identified adult patients with histologically diagnosed DLBCL between 2000 and 2018. We examined the association of SES levels with the odds and the secular trends of receipt of chemotherapy and/or rituximab. Additionally, we estimated the long-term relative survival by SES utilizing Hong Kong life tables. Among 4017 patients with DLBCL, 2363 (58.8%) patients received both chemotherapy and rituximab and 740 (18.4%) patients received chemotherapy alone, while 1612 (40.1%) and 914 (22.8%) patients received no rituximab or chemotherapy, respectively. On multivariable analysis, low SES was associated with lesser use of chemotherapy (odd ratio [OR] 0.44; 95% CI 0.34-0.57) and rituximab (OR 0.41; 95% CI 0.32-0.52). The socioeconomic disparity for either treatment showed no secular trend of change. Additionally, patients with low SES showed increased excess mortality, with a hazard ratio of 2.34 (95% CI 1.67-3.28). Improving survival outcomes for patients with DLBCL requires provision of best available medical care and securing access to treatment regardless of patients' SES.
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Affiliation(s)
- Shing Fung Lee
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong, China
- Department of Clinical Oncology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
- Department of Clinical Oncology, Tuen Mun Hospital, New Territories West Cluster, Hospital Authority, Hong Kong, China
| | - Andrew M Evens
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - Andrea K Ng
- Department of Radiation Oncology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Miguel-Angel Luque-Fernandez
- Department of Non-Communicable Disease Epidemiology, Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK.
- Department of Non-Communicable Disease and Cancer Epidemiology, Instituto de Investigacion Biosanitaria de Granada (Ibs.GRANADA), University of Granada, Granada, Spain.
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Tiu A, Jorge V, Moussa P, Djibo DA, Gupta S, Alpdogan O, Dourado C. Survival Disparities of Diffuse Large B-Cell Lymphoma in a Community-Based Inner-City Cancer Center. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2020; 21:205-215. [PMID: 33139233 DOI: 10.1016/j.clml.2020.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/04/2020] [Accepted: 10/04/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Diffuse large B-cell lymphoma (DLBCL) comprises approximately 30% of all non-Hodgkin lymphomas. Multiple studies have demonstrated race-based disparities in survival among patients with DLBCL across all stages of disease, in the era both before and after rituximab. The etiology for the racial disparities in survival among patients with DLBCL is still unknown. Moreover, the Revised International Prognostic Index (R-IPI), a tool that predicts the DLBCL patients' outcome, has not yet been validated in African Americans (AA). PATIENTS AND METHODS We conducted a cohort study of patients diagnosed with DLBCL from January 1, 2007, to December 31, 2017, from our tumor registry in a single community-based inner-city cancer center. We abstracted demographic, clinical, histopathologic, treatment, and R-IPI variables. A total of 181 patients (47.5%) with biopsy-proven DLBCL were included in the retrospective analysis. The median age was 65 years, 47% were men, 41% were AA, and 44% were white. RESULTS The AA group had a younger median age, higher lactate dehydrogenase levels, higher frequency of B symptoms, and higher HIV infection than the non-AA group. The AA group had significantly decreased median overall survival than the non-AA group (15.7 months; 95% confidence interval, 10.3 to 23.9, vs. 93.6 months; 95% confidence interval, 61.5 to 142.6, respectively; P < .001). The survival disparities persisted after excluding patients with HIV and who did not receive chemotherapy. In addition, AA race predicts a reduced survival by univariate and multivariate analysis. CONCLUSION AA with DLBCL may have a poorer prognosis than the non-AA population. Further studies should investigate the biology of DLBCL in the AA population.
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Affiliation(s)
- Andrew Tiu
- Department of Medicine, Einstein Medical Center, Philadelphia, PA.
| | - Vinicius Jorge
- Division of Hematology and Medical Oncology, Einstein Medical Center, Philadelphia, PA
| | - Peter Moussa
- Department of Medicine, Einstein Medical Center, Philadelphia, PA
| | - Djeneba Audrey Djibo
- Division of Research, Department of Medicine, Einstein Medical Center, Philadelphia, PA
| | - Sorab Gupta
- Division of Hematology and Medical Oncology, Einstein Medical Center, Philadelphia, PA
| | - Onder Alpdogan
- Division of Hematologic Malignancies and Hematopoietic Stem Cell Transplantation, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA
| | - Claudia Dourado
- Division of Hematology and Medical Oncology, Einstein Medical Center, Philadelphia, PA
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Patient-level Factors Associated With the Initial Management of Older Adults Diagnosed With Follicular Lymphoma: A Surveillance, Epidemiology, and End Results-Medicare Analysis. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2019; 20:e184-e194. [PMID: 31956071 DOI: 10.1016/j.clml.2019.12.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 12/03/2019] [Accepted: 12/14/2019] [Indexed: 11/20/2022]
Abstract
INTRODUCTION We evaluated patient-level factors associated with the initial management of older adults diagnosed with follicular lymphoma (FL). MATERIALS AND METHODS Using linked Surveillance, Epidemiology, and End Results-Medicare (SEER-Medicare) data; we identified 11,500 beneficiaries aged ≥ 66 years, diagnosed with FL between 2000 and 2013. A logistic regression model was used to estimate adjusted odds ratios (AORs) for factors associated with the receipt of active treatment versus watchful waiting (WW) as an initial management strategy. A multinomial logistic regression model was used to predict factors associated with receipt of specific active treatments, namely chemoimmunotherapy, rituximab monotherapy, chemotherapy, or radiation as compared with WW. RESULTS Overall, the initial management strategies adopted were WW (49%), chemoimmunotherapy (25%), radiation (10%), rituximab monotherapy (9%), and chemotherapy (7%). In reference to WW, grade III FL (AOR, 2.21; 95% confidence interval [CI], 1.99-2.46), increasing disease stage (Stage IV AOR, 1.80; 95% CI, 1.62-2.00), and use of preventive services (AOR, 1.18; 95% CI, 1.07-1.30) were associated with increased odds of active treatment receipt. Age > 80 years (AOR, 0.79; 95% CI, 0.71-0.87), Non-Hispanic African-American race (AOR, 0.64; 95% CI, 0.50-0.80), and state buy-in coverage (AOR, 0.81; 95% CI, 0.70-0.94) were associated with decreased odds of active treatment receipt. In reference to WW, the multinomial logistic regression model displayed differences in the receipt of rituximab-based therapies by age and comorbidity burden. Non-Hispanic African-American race and state buy-in coverage were associated with decreased odds of receiving rituximab-based therapies. CONCLUSION The present analysis identifies disparities in the initial management of older adults with FL owing to race and socioeconomic status. Future research should examine implications for subsequent treatment and health outcomes.
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McClelland S, Page BR, Jaboin JJ, Chapman CH, Deville C, Thomas CR. The pervasive crisis of diminishing radiation therapy access for vulnerable populations in the United States, part 1: African-American patients. Adv Radiat Oncol 2017; 2:523-531. [PMID: 29204518 PMCID: PMC5707425 DOI: 10.1016/j.adro.2017.07.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/03/2017] [Accepted: 07/11/2017] [Indexed: 01/05/2023] Open
Abstract
Introduction African Americans experience the highest burden of cancer incidence and mortality in the United States and have been persistently less likely to receive interventional care, even when such care has been proven superior to conservative management by randomized controlled trials. The presence of disparities in access to radiation therapy (RT) for African American cancer patients has rarely been examined in an expansive fashion. Methods and materials An extensive literature search was performed using the PubMed database to examine studies investigating disparities in RT access for African Americans. Results A total of 55 studies were found, spanning 11 organ systems. Disparities in access to RT for African Americans were most prominently study in cancers of the breast (23 studies), prostate (7 studies), gynecologic system (5 studies), and hematologic system (5 studies). Disparities in RT access for African Americans were prevalent regardless of organ system studied and often occurred independently of socioeconomic status. Fifty of 55 studies (91%) involved analysis of a population-based database such as Surveillance, Epidemiology and End Result (SEER; 26 studies), SEER-Medicare (5 studies), National Cancer Database (3 studies), or a state tumor registry (13 studies). Conclusions African Americans in the United States have diminished access to RT compared with Caucasian patients, independent of but often in concert with low socioeconomic status. These findings underscore the importance of finding systemic and systematic solutions to address these inequalities to reduce the barriers that patient race provides in receipt of optimal cancer care.
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Affiliation(s)
- Shearwood McClelland
- Department of Radiation Medicine, Oregon Health & Science University, Portland, Oregon
| | - Brandi R Page
- Department of Radiation Oncology and Molecular Radiation Sciences, The Johns Hopkins Hospital, Baltimore, Maryland
| | - Jerry J Jaboin
- Department of Radiation Medicine, Oregon Health & Science University, Portland, Oregon
| | - Christina H Chapman
- Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan
| | - Curtiland Deville
- Department of Radiation Oncology and Molecular Radiation Sciences, The Johns Hopkins Hospital, Baltimore, Maryland
| | - Charles R Thomas
- Department of Radiation Medicine, Oregon Health & Science University, Portland, Oregon
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Parikh RR, Yahalom J. Older patients with early-stage diffuse large B-cell lymphoma: the role of consolidation radiotherapy after chemoimmunotherapy. Leuk Lymphoma 2016; 58:614-622. [DOI: 10.1080/10428194.2016.1205739] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Rahul R. Parikh
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Joachim Yahalom
- Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
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Bista A, Sharma S, Shah BK. Disparities in Receipt of Radiotherapy and Survival by Age, Sex, and Ethnicity among Patient with Stage I Follicular Lymphoma. Front Oncol 2016; 6:101. [PMID: 27200290 PMCID: PMC4848288 DOI: 10.3389/fonc.2016.00101] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 04/11/2016] [Indexed: 11/13/2022] Open
Abstract
Background Radiotherapy (RT) is a first-line treatment option for stage I follicular lymphoma (FL). We studied disparities in receipt of RT and survival among patients with stage I FL. Methods Adult patients (age ≥18 years) with stage I FL, as the first primary cancer, diagnosed between 1992 and 2007 were identified using Surveillance, Epidemiology, and End Results (SEER) 18 database. Study population was divided into various subgroups based on age, sex, race, and marital status. Factors associated with receipt of RT and survival, among patients receiving RT, was evaluated using regression analysis and Cox PH modeling, respectively. SEER*Stat was used to compute 1- and 5-year RS for various subgroups and compared using Z score. Results Of the total 7315 patients (median age: 64 years), 2671 (36.5%) received RT. African-Americans, older age group, and single and separated/divorced/widow marital status predicted omission of RT. The 1- and 5-year RS were significantly better in patients receiving RT. In multivariate analysis, male sex, age <60 years, Caucasian race, and married marital status were found to be independent predictor of better RS among patients receiving RT (P < 0.0001). Conclusion This study showed that 36.5% patients with stage I FL received RT. Survival rates were significantly better for patients who received RT.
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Affiliation(s)
- Amir Bista
- Guthrie Robert Packer Hospital , Sayre, PA , USA
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