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Wang X, Brown DS, Cao Y, Ekenga CC, Guo S, Johnson KJ. Health Insurance Coverage and Racial/Ethnic Disparities in U.S. Childhood and Adolescent Cancer Survival. J Pediatr 2023:113378. [PMID: 36889628 DOI: 10.1016/j.jpeds.2023.02.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 02/06/2023] [Accepted: 02/20/2023] [Indexed: 03/10/2023]
Abstract
OBJECTIVE To evaluate potential effect modification by health insurance coverage on racial and ethnic disparities in cancer survival among U.S. children and adolescents. STUDY DESIGN Data from 54,558 individuals diagnosed with cancer at ≤ 19 years between 2004 and 2010 were obtained from the National Cancer Database. Cox proportional hazards regression was used for analyses. An interaction term between race/ethnicity and health insurance type was included to examine racial/ethnic disparities in survival by each insurance status category. RESULTS Racial/ethnic minorities experienced a 14-42% higher hazard of death compared with non-Hispanic Whites with magnitudes varying by health insurance type (Pinteraction < 0.001). Specifically, among those reported as privately insured, the hazard of death was higher for non-Hispanic Blacks (hazard ratio [HR]=1.48, 95% confidence interval [CI]: 1.36-1.62), non-Hispanic American Indian/Alaskan Natives (HR=1.30, 95%CI: 1.13-1.50), non-Hispanic Asians or Pacific Islanders (HR=1.99, 95%CI: 1.36-2.90) and Hispanics (HR=1.28, 95%CI: 1.17-1.40) vs. non-Hispanic Whites. Racial/ethnic disparities in survival among those reported as covered by Medicaid were present for non-Hispanic Blacks (HR=1.30, 95%CI: 1.19-1.43) but no other racial/ethnic minorities (HR ranges: 0.98∼1.00) vs. non-Hispanic Whites. In the uninsured group, the hazard of death for non-Hispanic Blacks (HR=1.68, 95%CI: 1.26-2.23) and Hispanics (HR=1.27, 95%CI: 1.01-1.61) was higher vs. non-Hispanic Whites. CONCLUSIONS Disparities in survival exist across insurance types, particularly for non-Hispanic Black childhood and adolescent cancer patients vs. non-Hispanic Whites with private insurance. These findings provide insights for research and policy and point to the need for more efforts on promoting health equity while improving health insurance coverage.
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Affiliation(s)
- Xiaoyan Wang
- Brown School, Washington University in St. Louis, St. Louis, MO, USA
| | - Derek S Brown
- Brown School, Washington University in St. Louis, St. Louis, MO, USA
| | - Yin Cao
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA; Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Shenyang Guo
- Brown School, Washington University in St. Louis, St. Louis, MO, USA
| | - Kimberly J Johnson
- Brown School, Washington University in St. Louis, St. Louis, MO, USA; Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA.
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2
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Zhao J, Han X, Zheng Z, Nogueira L, Lu AD, Nathan PC, Yabroff KR. Racial/Ethnic Disparities in Childhood Cancer Survival in the United States. Cancer Epidemiol Biomarkers Prev 2021; 30:2010-2017. [PMID: 34593561 DOI: 10.1158/1055-9965.epi-21-0117] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/17/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Non-white patients with childhood cancer have worse survival than Non-Hispanic (NH) White patients for many childhood cancers in the United States. We examined the contribution of socioeconomic status (SES) and health insurance on racial/ethnic disparities in childhood cancer survival. METHODS We used the National Cancer Database to identify NH White, NH Black, Hispanic, and children of other race/ethnicities (<18 years) diagnosed with cancer between 2004 and 2015. SES was measured by the area-level social deprivation index (SDI) at patient residence and categorized into tertiles. Health insurance coverage at diagnosis was categorized as private, Medicaid, and uninsured. Cox proportional hazard models were used to compare survival by race/ethnicity. We examined the contribution of health insurance and SES by sequentially adjusting for demographic and clinical characteristics (age group, sex, region, metropolitan statistical area, year of diagnosis, and number of conditions other than cancer), health insurance, and SDI. RESULTS Compared with NH Whites, NH Blacks and Hispanics had worse survival for all cancers combined, leukemias and lymphomas, brain tumors, and solid tumors (all P < 0.05). Survival differences were attenuated after adjusting for health insurance and SDI separately; and further attenuated after adjusting for insurance and SDI together. CONCLUSIONS Both SES and health insurance contributed to racial/ethnic disparities in childhood cancer survival. IMPACT Improving health insurance coverage and access to care for children, especially those with low SES, may mitigate racial/ethnic survival disparities.
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Affiliation(s)
- Jingxuan Zhao
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia.
| | - Xuesong Han
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia
| | - Zhiyuan Zheng
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia
| | - Leticia Nogueira
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia
| | - Amy D Lu
- The University of Toronto, Toronto, Ontario, Canada
| | - Paul C Nathan
- The University of Toronto, Toronto, Ontario, Canada.,The Hospital for Sick Children, Division of Hematology/Oncology, Toronto, Ontario, Canada
| | - K Robin Yabroff
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia
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3
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Poulalhon C, Goujon S, Marquant F, Faure L, Guissou S, Bonaventure A, Désandes E, Rios P, Lacour B, Clavel J. Factors associated with 5- and 10-year survival among a recent cohort of childhood cancer survivors (France, 2000-2015). Cancer Epidemiol 2021; 73:101950. [PMID: 34214767 DOI: 10.1016/j.canep.2021.101950] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/28/2021] [Accepted: 05/02/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Childhood cancer survival currently exceeds 80 % five years after diagnosis in high-income countries. In this study, we aimed to describe long-term trends and to investigate socioeconomic and spatial disparities in childhood cancer survival. METHODS The study included 28,073 cases recorded in the French National Registry of Childhood Cancers from 2000 to 2015. Contextual census data (deprivation indices, population density, spatial accessibility to general practitioners) were allocated to each case based on the residence at diagnosis. Overall survival (OS) and conditional 10-year OS for 5-year survivors were estimated for all cancers combined and by diagnostic group and subgroup. Comparisons were conducted by sex, age at diagnosis, period of diagnosis, and contextual indicators. Hazard ratios for death were estimated using Cox models. RESULTS All cancers combined, the OS reached 82.8 % [95 % CI: 82.4-83.3] at 5 years and 80.8 % [95 % CI: 80.3-81.3] at 10 years. Conditional 10-year OS of 5-year survivors reached 97.5 % [95 % CI: 97.3-97.7] and was higher than 95 % for all subgroups except osteosarcomas and most subgroups of the central nervous system. In addition to disparities by sex, age at diagnosis, and period of diagnosis, we observed a slight decrease in survival for cases living in the most deprived areas at diagnosis, not consistent across diagnostic groups. CONCLUSION Our results confirm the high 5-year survival for childhood cancer and show an excellent 10-year conditional survival of 5-year survivors. Additional individual data are needed to clarify the factors underlying the slight decrease in childhood cancer survival observed in the most deprived areas.
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Affiliation(s)
- Claire Poulalhon
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France; Registre National des Cancers de l'Enfant, Hôpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique Hôpitaux de Paris (AP-HP), Villejuif, and Centre Hospitalier Régional Universitaire de Nancy, Vandoeuvre-lès-Nancy, France.
| | - Stéphanie Goujon
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France; Registre National des Cancers de l'Enfant, Hôpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique Hôpitaux de Paris (AP-HP), Villejuif, and Centre Hospitalier Régional Universitaire de Nancy, Vandoeuvre-lès-Nancy, France
| | - Fabienne Marquant
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France; Registre National des Cancers de l'Enfant, Hôpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique Hôpitaux de Paris (AP-HP), Villejuif, and Centre Hospitalier Régional Universitaire de Nancy, Vandoeuvre-lès-Nancy, France
| | - Laure Faure
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France; Registre National des Cancers de l'Enfant, Hôpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique Hôpitaux de Paris (AP-HP), Villejuif, and Centre Hospitalier Régional Universitaire de Nancy, Vandoeuvre-lès-Nancy, France
| | - Sandra Guissou
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France; Registre National des Cancers de l'Enfant, Hôpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique Hôpitaux de Paris (AP-HP), Villejuif, and Centre Hospitalier Régional Universitaire de Nancy, Vandoeuvre-lès-Nancy, France
| | - Audrey Bonaventure
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France
| | - Emmanuel Désandes
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France; Registre National des Cancers de l'Enfant, Hôpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique Hôpitaux de Paris (AP-HP), Villejuif, and Centre Hospitalier Régional Universitaire de Nancy, Vandoeuvre-lès-Nancy, France
| | - Paula Rios
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France
| | - Brigitte Lacour
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France; Registre National des Cancers de l'Enfant, Hôpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique Hôpitaux de Paris (AP-HP), Villejuif, and Centre Hospitalier Régional Universitaire de Nancy, Vandoeuvre-lès-Nancy, France
| | - Jacqueline Clavel
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université de Paris, France; Registre National des Cancers de l'Enfant, Hôpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique Hôpitaux de Paris (AP-HP), Villejuif, and Centre Hospitalier Régional Universitaire de Nancy, Vandoeuvre-lès-Nancy, France
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Aristizabal P, Winestone LE, Umaretiya P, Bona K. Disparities in Pediatric Oncology: The 21st Century Opportunity to Improve Outcomes for Children and Adolescents With Cancer. Am Soc Clin Oncol Educ Book 2021; 41:e315-e326. [PMID: 34061564 PMCID: PMC9126642 DOI: 10.1200/edbk_320499] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
Adult cancer disparities have been documented for decades and continue to persist despite clinical advancements in cancer prevention, detection, and treatment. Pediatric cancer survival has improved significantly in the United States for the past 5 decades to over 80%; however, disparate outcomes among children and adolescents with cancer still affect many populations in the United States and globally, including racial and ethnic minorities, populations with low socioeconomic status, and residents of underserved areas. To achieve equitable outcomes for all children and adolescents with cancer, it is imperative that concerted multilevel approaches be carried out to understand and address health disparities and to ensure access to high-quality cancer care. Addressing social determinants of health, such as removing barriers to health care access and ensuring access to social supports, can reduce pediatric cancer disparities. Nevertheless, public health policy, health system interventions, and innovative delivery of evidence-based services are critically needed. Partnerships among patients, caregivers, and health care providers, and among health care, academic, and governmental institutions, have a pivotal role in reducing cancer disparities and improving outcomes in the 21st century.
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Affiliation(s)
- Paula Aristizabal
- Department of Pediatrics, Division of Pediatric Hematology/Oncology, University of California San Diego/Peckham Center for Cancer and Blood Disorders, Rady Children’s Hospital San Diego, San Diego, CA
- Population Sciences, Disparities and Community Engagement, University of California San Diego Moores Cancer Center, La Jolla, CA
| | - Lena E. Winestone
- Department of Pediatrics, Division of Allergy, Immunology, and Blood & Marrow Transplantation, University of California San Francisco Benioff Children’s Hospitals, San Francisco, CA
- University of California San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, CA
| | - Puja Umaretiya
- Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, MA
- Department of Pediatric Oncology and Division of Population Sciences, Dana-Farber Cancer Institute, Boston, MA
- Division of Pediatric Hematology/Oncology, Boston Children’s Hospital, Boston, MA
- Harvard Medical School, Boston, MA
| | - Kira Bona
- Department of Pediatric Oncology and Division of Population Sciences, Dana-Farber Cancer Institute, Boston, MA
- Division of Pediatric Hematology/Oncology, Boston Children’s Hospital, Boston, MA
- Harvard Medical School, Boston, MA
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5
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Morshed N, Haskard-Zolnierek K, Zhan FB. Geographic Variations of Racial/Ethnic Disparities in Late-Stage Diagnosis of Childhood Cancer in Texas. South Med J 2020; 113:224-231. [PMID: 32358617 DOI: 10.14423/smj.0000000000001097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES This study aimed to identify small geographic areas where the childhood cancer yearly incidence and late-stage diagnosis rates were disproportionately higher among racial/ethnic minorities (Hispanics and non-Hispanic African Americans) in Texas. METHODS The study examined childhood cancer disparities in Texas from 2005 to 2014, based on geographic location and race/ethnicity. Relative (risk ratio) and absolute (risk difference) measures were used to investigate racial disparities of childhood cancer late-stage diagnosis in small geographic areas (census tracts). The study investigated childhood cancer yearly incidence- and late-stage diagnosis rates for three racial groups combined. The study also analyzed the temporal change of childhood cancer late-stage diagnosis rates based on the data from census tracts where disparities existed for Hispanics and non-Hispanic African Americans compared with a non-Hispanic white reference group. RESULTS A total of 54% of the cases in the study cohort were diagnosed in the late stage. Although there were fewer non-Hispanic African Americans cases compared with non-Hispanic white and Hispanic cases, they showed significant geographic variation in racial/ethnic disparities compared with the non-Hispanic white reference group. The study also revealed that 58 census tracts for non-Hispanic African Americans and 47 census tracts for Hispanics (of 5265) had significantly higher late-stage diagnosis rates compared with non-Hispanic whites. The findings also demonstrated consistent increases in incidence and late-stage diagnosis from 2005 to 2014 for all cases combined. CONCLUSIONS Most of the significant census tracts with a higher late-stage diagnosis rate for Hispanics were located on the outskirts of the Dallas-Fort Worth, Houston, and San Antonio areas. In contrast, geographic disparities of childhood cancer late-stage diagnosis for non-Hispanic African Americans were found inside the large metropolitan areas of Houston and Dallas-Fort Worth. The findings of this study will help prioritize the geographical allocation of resources, which, in turn, will help to facilitate preventive healthcare services and alleviate the disease burden in children.
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Affiliation(s)
- Niaz Morshed
- From the Departments of Geography and Psychology, Texas State University, San Marcos
| | | | - F Benjamin Zhan
- From the Departments of Geography and Psychology, Texas State University, San Marcos
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6
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Kyrönlahti A, Madanat-Harjuoja L, Pitkäniemi J, Rantanen M, Malila N, Taskinen M. Childhood cancer mortality and survival in immigrants: A population-based registry study in Finland. Int J Cancer 2020; 146:2746-2755. [PMID: 31407318 DOI: 10.1002/ijc.32625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 07/06/2019] [Accepted: 07/09/2019] [Indexed: 12/30/2022]
Abstract
Immigration in Europe has increased considerably over the past decades with the immigrant population similarly expanding in Finland. Our aim was to study childhood cancer mortality and survival in immigrants. In all, 4,437 patients diagnosed with cancer under the age of 20 years between 1990 and 2009 were identified from the Finnish Cancer Registry and their parents from the Population Register Center. Information on demographic factors was obtained from Statistics Finland. Poisson regression modeling was used to estimate hazard ratios (HRs) for cancer deaths. The life table method and the log rank test were used in survival analysis. Patients or parents of foreign background and born abroad had higher 5-year mortality (patient HR 2.03, 95% CI 1.18-3.49; maternal HR 2.11, 95% CI 1.46-3.04; paternal HR 1.85, 95% CI 1.29-2.66) compared to those of Finnish background and born in Finland. Childhood cancer survival in 5-year follow-up was higher if the mother (83% vs. 68%) or the father (83% vs. 70%) were of Finnish background and born in Finland. Despite equal access to public health care, we observed significant differences in childhood cancer mortality and survival by background. Cultural differences, linguistic obstacles and difficulties in navigating the health care system may contribute, along with genetic and biologic factors. Offering tailored information and taking cultural and linguistic aspects into account is necessary when diagnosing and treating patients from different ethnic backgrounds who have not yet integrated into the local culture and health care system.
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Affiliation(s)
- Anniina Kyrönlahti
- Finnish Cancer Registry, Helsinki, Finland.,New Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Laura Madanat-Harjuoja
- Finnish Cancer Registry, Helsinki, Finland.,New Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Janne Pitkäniemi
- Finnish Cancer Registry, Helsinki, Finland.,Department of Public Health, University of Helsinki, Helsinki, Finland
| | | | - Nea Malila
- Finnish Cancer Registry, Helsinki, Finland
| | - Mervi Taskinen
- Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Helsinki University Hospital, Helsinki, Finland
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7
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Cheng BT, Wangmo T. Palliative care utilization in hospitalized children with cancer. Pediatr Blood Cancer 2020; 67:e28013. [PMID: 31612605 DOI: 10.1002/pbc.28013] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/10/2019] [Accepted: 09/10/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND There is growing evidence that palliative care (PC) is associated with increased quality of life in children with cancer. Despite increasing recommendations in support of PC to improve pediatric oncology care, little is known about its patterns of use. METHODS We analyzed the 2005-2011 National Inpatient Sample, a representative, cross-sectional sample of US hospital admissions. Our study cohort comprised 10 960 hospitalizations of children with cancer and high in-hospital mortality risk. Survey-weighted regression models were constructed to determine associations of person- and hospital-level characteristics with PC involvement and healthcare costs. RESULTS Overall, 4.4% of hospitalizations included PC involvement. In regression models invoking stepwise variable selection, a shorter length of stay (PC vs no PC; mean: 23.9 vs 32.6 days), solid cancer (solid vs hematologic vs brain cancer; PC use: 7.4% vs 2.8% vs 5.5%), and older age (PC vs no PC; mean: 10.2 vs 8.9 years) were associated with PC use. PC utilization was also associated with lower overall and daily hospital costs. CONCLUSIONS One in 20 pediatric inpatients with cancer and high mortality risk receives PC, with differential utilization by socio-economic groups. These results have significant implications for public health resource allocation and the delivery of pediatric PC as high-value care. Future research should focus on the development of new tools to help physicians assess when PC is appropriate for their patients.
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Affiliation(s)
- Brian T Cheng
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Tenzin Wangmo
- Institute of Biomedical Ethics, University of Basel, Basel, Switzerland
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8
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Kahn JM, Kelly KM, Pei Q, Bush R, Friedman DL, Keller FG, Bhatia S, Henderson TO, Schwartz CL, Castellino SM. Survival by Race and Ethnicity in Pediatric and Adolescent Patients With Hodgkin Lymphoma: A Children's Oncology Group Study. J Clin Oncol 2019; 37:3009-3017. [PMID: 31539308 PMCID: PMC6839907 DOI: 10.1200/jco.19.00812] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2019] [Indexed: 01/10/2023] Open
Abstract
PURPOSE Population-based studies of children and adolescents with Hodgkin lymphoma (HL) report a survival disadvantage in nonwhite-non-Hispanic black (NHB) and Hispanic-patients. Whether disparities persist after adjustment for clinical and treatment-related variables is unknown. We examined survival by race/ethnicity in children receiving risk-based, response-adapted, combined-modality therapy for HL in contemporary Children's Oncology Group trials. PATIENTS AND METHODS This pooled analysis used individual-level data from 1,605 patients (younger than age 1 to 21 years) enrolled in phase III trials for low-risk (AHOD0431), intermediate-risk (AHOD0031), and high-risk (AHOD0831) HL from 2002 to 2012. Event-free survival (EFS) and overall survival (OS) were compared between non-Hispanic white (NHW) and nonwhite patients. Cox proportional hazards for survival were estimated for both de novo and relapsed HL, adjusting for demographics, disease characteristics, and therapy. RESULTS At median follow up of 6.9 years, cumulative incidence of relapse was 17%. Unadjusted 5-year EFS and OS were 83% (SE, 1.2%) and 97% (SE, < 1%), respectively. Neither differed by race/ethnicity. In multivariable analyses for OS, nonwhite patients had a 1.88× higher hazard of death (95% CI, 1.1 to 3.3). Five-year postrelapse survival probabilities by race were as follows: NHW, 90%; NHB, 66%; and Hispanic, 80% (P < .01). Compared with NHW, Hispanic and NHB children had 2.7-fold (95% CI, 1.2 to 6.2) and 3.5-fold (95% CI, 1.5 to 8.2) higher hazard of postrelapse mortality, respectively. CONCLUSION In patients who were treated for de novo HL in contemporary Children's Oncology Group trials, EFS did not differ by race/ethnicity; however, adjusted OS was significantly worse in nonwhite patients, a finding driven by increased postrelapse mortality in this population. Additional studies examining treatment and survival disparities after relapse are warranted.
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Affiliation(s)
| | - Kara M. Kelly
- Roswell Park Comprehensive Cancer Center, Buffalo, NY
| | - Qinglin Pei
- Children’s Oncology Group Statistics and Data Center, University of Florida, Gainesville, FL
| | - Rizvan Bush
- Children’s Oncology Group Statistics and Data Center, Monrovia, CA
| | | | | | - Smita Bhatia
- University of Alabama at Birmingham, Birmingham, AL
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9
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Khullar K, Rivera-Núñez Z, Jhawar SR, Drachtman R, Cole PD, Hoppe BS, Parikh RR. Pediatric hodgkin lymphoma: disparities in survival by race. Leuk Lymphoma 2019; 61:546-556. [DOI: 10.1080/10428194.2019.1680841] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Karishma Khullar
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Zorimar Rivera-Núñez
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Sachin R. Jhawar
- Department of Radiation Oncology, Ohio State University, Columbus, OH, USA
| | - Richard Drachtman
- Section of Pediatric Hematology and Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Peter D. Cole
- Section of Pediatric Hematology and Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | | | - Rahul R. Parikh
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
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10
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Castellino SM, Parsons SK, Kelly KM. Closing the survivorship gap in children and adolescents with Hodgkin lymphoma. Br J Haematol 2019; 187:573-587. [PMID: 31566730 DOI: 10.1111/bjh.16197] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/15/2019] [Indexed: 01/26/2023]
Abstract
The treatment of Hodgkin lymphoma (HL) is one of early success. However, disease-free survival (DFS) does not reflect latent organ injury and its impact on health status and well-being beyond 5 years. In fact, we are at a crossroads, in terms of needing individualized approaches to maintain DFS, while minimizing late effects and preserving health-related quality of life (HRQoL). Premature morbidity and mortality translate to a high societal cost associated with the potential number of productive life years ahead in this population who are young at diagnosis. The discordance between short-term lymphoma-free survival and long-term health and HRQoL creates a "survivorship gap" which can be characterized for individuals and for subgroups of patients. The current review delineates contributors to compromised outcomes and health status in child and adolescent (paediatric) HL and frames the survivorship gap in terms of primary and secondary prevention. Primary prevention aims to titrate therapy. Secondary prevention entails strategies to intervene against late effects. Bridging the survivorship gap will be attained with enhanced knowledge of and attention to biology of the tumour and microenvironment, host genetic factors, HRQoL and sub-populations with disparate outcomes.
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Affiliation(s)
- Sharon M Castellino
- Department of Pediatrics, Division Hematology-Oncology, Emory School of Medicine, The Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Susan K Parsons
- Department of Pediatrics, Tufts University School of Medicine, Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, MA, USA
| | - Kara M Kelly
- Department of Pediatrics, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
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11
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Mittal N, Davidson J, Martinez MF, Sanchez R, Sane N, Giordano L, Choi DK, Kent P, Dighe D, Iqbal A, Kiely C, Breen K, Quigley JG, Catchatourian R, Gitelis S, Schmidt ML. A Tri-Institutional Approach to Address Disparities in Children's Oncology Group Clinical Trial Accrual for Adolescents and Young Adults and Underrepresented Minorities. J Adolesc Young Adult Oncol 2019; 8:227-235. [DOI: 10.1089/jayao.2018.0119] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Nupur Mittal
- Department of Pediatrics, Rush University Children's Hospital, Chicago, Illinois
| | - Jonathan Davidson
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
| | - Mario F. Martinez
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
| | - Reynaldo Sanchez
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
| | - Nitin Sane
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
| | - Lisa Giordano
- Department of Pediatrics, Rush University Children's Hospital, Chicago, Illinois
| | - Daniel K. Choi
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
| | - Paul Kent
- Department of Pediatrics, Rush University Children's Hospital, Chicago, Illinois
| | - Dipti Dighe
- Department of Pediatrics, John. H. Stroger Jr. Hospital of Cook County, Chicago, Illinois
| | - Asneha Iqbal
- Department of Pediatrics, John. H. Stroger Jr. Hospital of Cook County, Chicago, Illinois
| | - Cathleen Kiely
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
| | - Kathleen Breen
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
| | - John G. Quigley
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
| | - Rosalind Catchatourian
- Department of Pediatrics, John. H. Stroger Jr. Hospital of Cook County, Chicago, Illinois
| | - Steven Gitelis
- Department of Pediatrics, Rush University Children's Hospital, Chicago, Illinois
| | - Mary Lou Schmidt
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
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12
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Joseph M, Hamilton EC, Hayes-Jordan A, Huh WW, Austin MT. The impact of racial/ethnic disparities on survival for children and young adults with chest wall sarcoma: A population-based study. J Pediatr Surg 2018; 53:1621-1626. [PMID: 29729823 DOI: 10.1016/j.jpedsurg.2018.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 03/29/2018] [Accepted: 04/08/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND To determine whether there are racial/ethnic disparities in disease presentation, treatment and survival outcomes among children and young adults with chest wall sarcomas. METHODS The Surveillance, Epidemiology and End Results (SEER) database was analyzed for patients 21 years old and younger with chest wall sarcoma. We performed multivariate logistic regression to investigate the association of race/ethnicity with advanced stage of disease at presentation and likelihood of undergoing surgical resection. Overall survival (OS) was evaluated using Cox regression modeling to calculate hazard ratios with 95% confidence intervals. RESULTS A total of 669 patients were identified: 393 non-Hispanic whites (NHW) (59%), 151 Hispanics (23%), 64 non-Hispanic blacks (NHB) (11%), and 64 other race/ethnicity (9%). The 5- and 10-year OS rates for the entire cohort were 69% and 64%, respectively. NHB had significantly worse 5-year and 10-year OS compared to NHW based on the log rank test (61% versus 70%, 52% versus 66%, respectively; p = 0.037).). Most patients (80%) underwent surgical resection. However, NHB were less likely than NHW to undergo surgical resection by multivariate analysis (OR 0.43, 95% CI 0.22-0.82). CONCLUSIONS NHB children and young adults with chest wall sarcoma have decreased overall survival. In addition, NHB are less likely to undergo surgical resection which may contribute to survival disparities. It is paramount that health care providers work to close the treatment gap between racial/ethnic groups to improve survival in children and young adults with chest wall sarcoma. LEVEL OF EVIDENCE Level III Treatment Study.
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Affiliation(s)
- Michael Joseph
- Department of Pediatric Surgery, McGovern Medical School, Houston, TX; Center for Surgical Trials and Evidence-Based Practice, McGovern Medical School, Houston, TX
| | - Emma C Hamilton
- Department of Pediatric Surgery, McGovern Medical School, Houston, TX; Center for Surgical Trials and Evidence-Based Practice, McGovern Medical School, Houston, TX
| | - Andrea Hayes-Jordan
- Department of Pediatric Surgery, McGovern Medical School, Houston, TX; Division of Pediatrics, Children's Cancer Hospital at the University of Texas M.D. Anderson Cancer Center, Houston, TX; Department of Surgical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Winston W Huh
- Division of Pediatrics, Children's Cancer Hospital at the University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Mary T Austin
- Department of Pediatric Surgery, McGovern Medical School, Houston, TX; Center for Surgical Trials and Evidence-Based Practice, McGovern Medical School, Houston, TX; Division of Pediatrics, Children's Cancer Hospital at the University of Texas M.D. Anderson Cancer Center, Houston, TX; Department of Surgical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX.
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13
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Jibb L, Croal L, Wang J, Yuan C, Foster J, Cheung V, Gladstone B, Stinson J. Children’s Experiences of Cancer Care: A Systematic Review and Thematic Synthesis of Qualitative Studies. Oncol Nurs Forum 2018; 45:527-544. [DOI: 10.1188/18.onf.527-544] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Walsh A, Chewning J, Li X, Dai C, Whelan K, Madan-Swain A, Waterbor J, Baskin ML, Goldman FD. Inferior outcomes for black children with high risk acute lymphoblastic leukemia and the impact of socioeconomic variables. Pediatr Blood Cancer 2017; 64:267-274. [PMID: 27650428 DOI: 10.1002/pbc.26222] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 07/14/2016] [Accepted: 07/28/2016] [Indexed: 01/07/2023]
Abstract
BACKGROUND While significant improvements have been made for children with acute lymphoblastic leukemia (ALL) in the United States over the past 20 years, black patients continue to have inferior outcomes. The full impact of socioeconomic variables on outcomes in this minority population is not entirely understood. PROCEDURE Disease characteristics, demographic, and socioeconomic status (SES) variables were collected on black (n = 44) and white (n = 178) patients diagnosed at the University of Alabama at Birmingham. Cox proportional hazard regression was used to evaluate the influence of SES and insurance status on survival. RESULTS As a cohort, 5-year overall survival (OS) was 87% (82-91%), with a median follow-up of 99 months. In univariable analysis, black race was not significantly associated with a higher risk of death or relapse and death. White and black patients with standard-risk leukemia had excellent outcomes, with 97% (91-99%) and 96% (75-99%) 5-year OS, respectively. In contrast, for high-risk disease, white patients had a statistically significant improved 5-year OS rates compared with black patients (79% [68-87%] vs. 52% [28-72%]). Black children were more likely to have public insurance, and, in multivariable analysis, this was associated with a trend toward an improved outcome. Black patients also had poorer census tract-level SES parameters, but these variables were not associated with survival. CONCLUSION Our study demonstrates significantly inferior outcomes for black children with high-risk leukemia. These outcome disparities were not related to SES variables, including poverty or private insurance coverage, suggesting the involvement of other factors and highlighting the need for a prospective investigative analysis.
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Affiliation(s)
- Alexandra Walsh
- Department of Pediatric Hematology and Oncology, Children's Specialty Center of Nevada, Las Vegas, Nevada
| | - Joseph Chewning
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Xuelin Li
- Department of Epidemiology, University of Alabama School of Public Health, Birmingham, Alabama
| | - Chen Dai
- Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Kimberly Whelan
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Avi Madan-Swain
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - John Waterbor
- Department of Epidemiology, University of Alabama School of Public Health, Birmingham, Alabama
| | - Monica L Baskin
- Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Frederick D Goldman
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
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15
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Winestone LE, Getz KD, Miller TP, Wilkes JJ, Sack L, Li Y, Huang YS, Seif AE, Bagatell R, Fisher BT, Epstein AJ, Aplenc R. The role of acuity of illness at presentation in early mortality in black children with acute myeloid leukemia. Am J Hematol 2017; 92:141-148. [PMID: 27862214 DOI: 10.1002/ajh.24605] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 11/04/2016] [Accepted: 11/08/2016] [Indexed: 01/20/2023]
Abstract
Black patients with acute myeloid leukemia (AML) experience higher mortality than White patients. We compared induction mortality, acuity of illness prior to chemotherapy, and insurance type between Black and White patients to assess whether acuity of presentation mediates the disparity. Within a retrospective cohort of 1,122 children with AML treated with two courses of standard induction chemotherapy between 2004 and 2014 in the Pediatric Health Information System (PHIS) database, the association between race (Black versus White) and inpatient mortality during induction was examined. Intensive Care Unit (ICU)-level resource utilization during the first 72 hours following admission for initial AML chemotherapy was evaluated as a potential mediator. The total effect of race on mortality during Induction I revealed a strong association (unadjusted HR 2.75, CI: 1.18, 6.41). Black patients had a significantly higher unadjusted risk of requiring ICU-level resources within the first 72 hours after initial presentation (17% versus 11%; RR 1.52, CI: 1.04, 2.24). Mediation analyses revealed the indirect effect of race through acuity accounted for 61% of the relative excess mortality during Induction I. Publicly insured patients experienced greater induction mortality than privately insured patients regardless of race. Black patients with AML have significantly greater risk of induction mortality and are at increased risk for requiring ICU-level resources soon after presentation. Higher acuity amongst Black patients accounts for a substantial portion of the relative excess mortality during Induction I. Targeting factors affecting acuity of illness at presentation may lessen racial disparities in AML induction mortality.
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Affiliation(s)
- Lena E. Winestone
- Division of Oncology; The Children's Hospital of Philadelphia; Pennsylvania
- Center for Pediatric Clinical Effectiveness, The Children's Hospital of Philadelphia; Pennsylvania
- Leonard Davis Institute of Health Economics, University of Pennsylvania; Pennsylvania
| | - Kelly D. Getz
- Division of Oncology; The Children's Hospital of Philadelphia; Pennsylvania
- Center for Pediatric Clinical Effectiveness, The Children's Hospital of Philadelphia; Pennsylvania
| | - Tamara P. Miller
- Division of Oncology; The Children's Hospital of Philadelphia; Pennsylvania
- Center for Pediatric Clinical Effectiveness, The Children's Hospital of Philadelphia; Pennsylvania
| | - Jennifer J. Wilkes
- Division of Oncology; The Children's Hospital of Philadelphia; Pennsylvania
- Center for Pediatric Clinical Effectiveness, The Children's Hospital of Philadelphia; Pennsylvania
- Leonard Davis Institute of Health Economics, University of Pennsylvania; Pennsylvania
| | - Leah Sack
- Division of Oncology; The Children's Hospital of Philadelphia; Pennsylvania
| | - Yimei Li
- Department of Biostatistics and Epidemiology; Perelman School of Medicine, University of Pennsylvania; Pennsylvania
| | - Yuan-Shung Huang
- Healthcare Analytics Unit; The Children's Hospital of Philadelphia; Pennsylvania
| | - Alix E. Seif
- Division of Oncology; The Children's Hospital of Philadelphia; Pennsylvania
- Department of Pediatrics; Perelman School of Medicine, University of Pennsylvania; Pennsylvania
| | - Rochelle Bagatell
- Division of Oncology; The Children's Hospital of Philadelphia; Pennsylvania
- Department of Pediatrics; Perelman School of Medicine, University of Pennsylvania; Pennsylvania
| | - Brian T. Fisher
- Center for Pediatric Clinical Effectiveness, The Children's Hospital of Philadelphia; Pennsylvania
- Division of Infectious Diseases; The Children's Hospital of Philadelphia; Pennsylvania
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania; Pennsylvania
| | - Andrew J. Epstein
- Leonard Davis Institute of Health Economics, University of Pennsylvania; Pennsylvania
- Division of General Internal Medicine; Perelman School of Medicine, University of Pennsylvania; Pennsylvania
- Department of Veterans Affairs' Center for Health Equity Research and Promotion; Philadelphia Veterans Affairs Medical Center; Pennsylvania
| | - Richard Aplenc
- Division of Oncology; The Children's Hospital of Philadelphia; Pennsylvania
- Center for Pediatric Clinical Effectiveness, The Children's Hospital of Philadelphia; Pennsylvania
- Department of Pediatrics; Perelman School of Medicine, University of Pennsylvania; Pennsylvania
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania; Pennsylvania
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Kesik V, Ataş E, Karakükcü M, Aksoylar S, Erbey F, Taçyıldız N, Küpesiz A, Öniz H, Ünal E, Kansoy S, Öztürk G, Elli M, Kaya Z, Ünal E, Hazar V, Yılmaz Bengoa Ş, Karasu G, Atay D, Dağdemir A, Ören H, Koçak Ü, Yeşilipek MA. Prognostic Factors and a New Prognostic Index Model for Children and Adolescents with Hodgkin's Lymphoma Who Underwent Autologous Hematopoietic Stem Cell Transplantation: A Multicenter Study of the Turkish Pediatric Bone Marrow Transplantation Study Group. Turk J Haematol 2016; 33:265-272. [PMID: 27094103 PMCID: PMC5204179 DOI: 10.4274/tjh.2015.0280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Objective: The prognostic factors and a new childhood prognostic index after autologous hematopoietic stem cell transplantation (AHSCT) in patients with relapsed/refractory Hodgkin’s lymphoma (HL) were evaluated. Materials and Methods: The prognostic factors of 61 patients who underwent AHSCT between January 1990 and December 2014 were evaluated. In addition, the Age-Adjusted International Prognostic Index and the Childhood International Prognostic Index (CIPI) were evaluated for their impact on prognosis. Results: The median age of the 61 patients was 14.8 years (minimum-maximum: 5-20 years) at the time of AHSCT. There were single relapses in 28 patients, ≥2 relapses in eight patients, and refractory disease in 25 patients. The chemosensitivity/chemorefractory ratio was 36/25. No pretransplant radiotherapy, no remission at the time of transplantation, posttransplant white blood cell count over 10x103/µL, posttransplant positron emission tomography positivity at day 100, and serum albumin of <2.5 g/dL at diagnosis were correlated with progression-free survival. No remission at the time of transplantation, bone marrow positivity at diagnosis, and relapse after AHSCT were significant parameters for overall survival. Conclusion: The major factors affecting the progression-free and overall survival were clearly demonstrated. A CIPI that uses a lactate dehydrogenase level of 500 IU/L worked well for estimating the prognosis. We recommend AHSCT at first complete remission for relapsed cases, and it should also be taken into consideration for patients with high prognostic scores at diagnosis.
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Affiliation(s)
- Vural Kesik
- Gülhane Training and Research Hospital Clinic of Pediatric Oncology, Ankara, Turkey Phone: +90 312 304 43 94 E-mail:
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17
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Hung CL, Ou CY, Lai HC, Chen YT, Lee CC, Li SC, Su YC. High combined individual and neighborhood socioeconomic status correlated with better survival of patients with lymphoma in post-rituximab era despite universal health coverage. JOURNAL OF CANCER RESEARCH AND PRACTICE 2016. [DOI: 10.1016/j.jcrpr.2016.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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18
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Chen B, Dai D, Tang H, Ai X, Chen X, Zhang X, Li Z, Xie X. Pretreatment Hematocrit Is Superior to Hemoglobin as a Prognostic Factor for Triple Negative Breast Cancer. PLoS One 2016; 11:e0165133. [PMID: 27851755 PMCID: PMC5112796 DOI: 10.1371/journal.pone.0165133] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 10/06/2016] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Anemia usually refers to low hemoglobin (Hb) levels. Previous studies indicated that anemia negatively influence the survival in various cancers. Hematocrit (HCT) is the volume percentage of red blood cells in blood, which could indicate anemia in both individuals and populations. This study compared the value of HCT with that of Hb for predicting outcomes of patients who underwent treatment for triple negative breast cancer (TNBC). METHODS A retrospective study of 293 triple negative breast cancer patients, accepting treatment from January 2004 to December 2009 at Sun Yat-sen University Cancer Center, was conducted. Kaplan-Meier curves and multivariate Cox proportional models were used to calculate disease free survival (DFS) and overall survival (OS). RESULTS The cut-off value of HCT was 35.9% determined by X-tile software analysis. The cut-off value of Hb was 12.0 g/dl based on the World Health Organization (WHO) criteria. In univariate analysis, low HCT and low Hb were both significantly associated with decreased DFS and OS. In multivariate analysis, HCT (HR: 0.570; 95% CI: 0.331-0.981, P = 0.042 for DFS; HR: 0.456; 95% CI: 0.256-0.813, P = 0.008 for OS) was still identified as independent predictor of outcome, but not Hb. CONCLUSION Pretreatment low HCT is independently associated with poor prognosis in TNBC patients. However, HCT was found to be superior to Hb in terms of predicting breast cancer mortality. In the future, large-scale prospective studies or validation studies are needed to verify our findings.
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Affiliation(s)
- Bo Chen
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Danian Dai
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Hailin Tang
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Xiaohong Ai
- Department of Radiotherapy, The First Affiliated Hospital, University of South China, Hengyang, Hunan Province, China
| | - Xi Chen
- Department of Anatomy, Medical College, University of South China, Hengyang, Hunan Province, China
| | - Xiaoyan Zhang
- Department of Gastroenterology, Affiliated Nanhua Hospital of University of South China, Hengyang, Hunan Province, China
| | - Zhiyan Li
- Department of Gastroenterology, Affiliated Nanhua Hospital of University of South China, Hengyang, Hunan Province, China
| | - Xiaoming Xie
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
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19
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Nooka AK, Behera M, Lonial S, Dixon MD, Ramalingam SS, Pentz RD. Access to Children's Oncology Group and Pediatric Brain Tumor Consortium phase 1 clinical trials: Racial/ethnic dissimilarities in participation. Cancer 2016; 122:3207-3214. [PMID: 27404488 DOI: 10.1002/cncr.30090] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 03/31/2016] [Accepted: 04/14/2016] [Indexed: 11/08/2022]
Abstract
BACKGROUND Phase 1 clinical trials introduce new therapies to humans with the goal of establishing their safety. A prior Children's Oncology Group (COG) study analyzed the proportional enrollment of patients by race, ethnicity, sex, and age for all trial phases. The current study evaluated the representation of patients by race, ethnicity, sex, and age in phase 1 clinical trials. METHODS This study evaluated 1348 children with 128 diagnoses enrolled in COG and Pediatric Brain Tumor Consortium phase 1 clinical trials in the United States from February 28, 2000 to December 29, 2008. Observed and expected proportions were calculated according to an established methodology with a representative population from Surveillance, Epidemiology, and End Results data, which included 27,766 children with the same International Classification of Diseases for Oncology (third edition) diagnostic codes. RESULTS Underrepresentation in phase 1 trials was seen for lymphohematopoietic (LH) tumors (9.3% observed vs 37% expected) versus solid tumors (90.6% observed vs 63% expected). Although representation was fairly proportional, Hispanics (12.6% observed vs 27% expected), particularly Hispanic females (6% observed vs 18% expected), were significantly underrepresented. The 0- to 4-year age group was underrepresented (11.7% observed vs 36.5% expected). By tumor type, the most significantly underrepresented groups were 0- to 4-year-old children and Hispanics for both solid cancers (11% observed vs 34.4% expected for 0- to 4-year-old children and 12% observed vs 24% expected for Hispanics) and LH cancers (16% observed vs 40% expected for 0- to 4-year-old children and 19.4% observed vs 33% expected for Hispanics). CONCLUSIONS Although sex and racial/ethnic groups are mostly proportionally represented in phase 1 trials, some specific subgroups such as Hispanic children are underrepresented and may benefit from focused accrual. Cancer 2016;122:3207-14. © 2016 American Cancer Society.
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Ehrhardt MJ, Bhakta N, Liu Q, Yasui Y, Krasin MJ, Mulrooney DA, Hudson MM, Robison LL. Absence of Basal Cell Carcinoma in Irradiated Childhood Cancer Survivors of Black Race: A Report from the St. Jude Lifetime Cohort Study. Cancer Epidemiol Biomarkers Prev 2016; 25:1356-60. [PMID: 27365149 DOI: 10.1158/1055-9965.epi-16-0280] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 06/22/2016] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Cancer survivors exposed to therapeutic radiation are at increased risk for basal cell carcinoma (BCC). Despite the notable influence of race on rates of BCC in the general population, the same is not clearly defined in previously irradiated cancer survivors. We investigated the influence of race on the development of BCC in adult survivors of childhood cancer. METHODS Using a retrospective cohort study, outcomes were collected through June 30, 2015, for 1,746 irradiated childhood cancer survivors participating in the St. Jude Lifetime Cohort Study (SJLIFE), comprising a total of 33,147 person-years of follow-up. Subsequent neoplasms identified in survivors through self-report and prospective clinical assessment were validated by pathology reports. Expected numbers of each type of radiation-associated neoplasm, including BCC, were calculated for irradiated black survivors based on rates in irradiated white survivors, accounting for primary cancer diagnosis, diagnosis year, attained age, and sex. RESULTS On the basis of the rate of BCC in previously irradiated white survivors, 56.1 BCCs were expected among 237 black survivors, yet none observed. In contrast, the observed-to-expected ratio of non-BCC radiation-associated neoplasms (melanoma, brain, breast, thyroid cancer) was 0.88 (30 observed/34.2 expected, 95% confidence interval, 0.59-1.25). CONCLUSIONS We identified an unexpected absence of BCC in irradiated black survivors in SJLIFE. We observe a similar absence of BCC in black individuals among two additional cohorts treated with irradiation for childhood cancer. IMPACT Black survivors are at a substantially reduced or absent risk for BCC from therapeutic radiation for reasons not yet fully understood. Cancer Epidemiol Biomarkers Prev; 25(9); 1356-60. ©2016 AACR.
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Affiliation(s)
- Matthew J Ehrhardt
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee. Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Nickhill Bhakta
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Qi Liu
- School of Public Health, University of Alberta, Edmonton, Alberta, Canada
| | - Yutaka Yasui
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee. School of Public Health, University of Alberta, Edmonton, Alberta, Canada
| | - Matthew J Krasin
- Department of Radiological Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee.
| | - Daniel A Mulrooney
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee. Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Melissa M Hudson
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee. Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Leslie L Robison
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
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21
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Grubb WR, Neboori HJ, Diaz AD, Li H, Kwon D, Panoff J. Racial and Ethnic Disparities in the Pediatric Hodgkin Lymphoma Population. Pediatr Blood Cancer 2016; 63:428-35. [PMID: 26524117 DOI: 10.1002/pbc.25802] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 09/23/2015] [Indexed: 02/05/2023]
Abstract
BACKGROUND Little is known about the association between race/ethnicity and survival in pediatric Hodgkin lymphoma (HL) patients. In a state-wide pediatric cohort diagnosed with HL, we assessed demographic, disease, and treatment characteristics associated with overall survival (OS). We then attempted to validate these findings and assess disease-specific survival (DSS) in a national Surveillance, Epidemiology, and End Results (SEER) cohort. PROCEDURE HL patients of 0.1-21 years diagnosed from 1981 to 2010 were evaluated using the Florida Cancer Data System (FCDS). Kaplan-Meier curves estimated OS from 5 to 25 years based on race/ethnicity, treatment, decade of diagnosis, and sex. Multivariate Cox proportional hazard regressions tested independent factors associated with differences in OS. These methods were replicated in the SEER with additional assessment of DSS. RESULTS A total of 1,778 patients were identified in the FCDS and 6,027 in the SEER. Median diagnosis age was 17 years in both cohorts. In the FCDS, Blacks had worse OS than Whites and Hispanics at 25 years (33% vs. 49.2% vs. 44.7%, respectively; P = 0.0005), and Black race was associated with inferior OS on multivariate regression (hazard ratio [HR]: 1.81, P = 0.0003). In the SEER, Blacks had inferior OS (Blacks 74.2% vs. Whites 82% vs. Hispanics 82%; P = 0.0005) and DSS (85.7% vs. 90.8% vs. 88.1%, respectively; P = 0.0002) at 25 years. Hispanic males had inferior DSS compared to White males (84.8% vs. 90.6%; P = 0.0478), and Hispanic race was a predictor for inferior DSS on multivariate analysis (HR: 1.238; P < 0.0001). CONCLUSIONS Racial/ethnic disparities persist in the pediatric HL population despite modern treatment; underlying causes of these disparities are complex and need further examination.
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Affiliation(s)
- W R Grubb
- Department of Radiation Oncology, University of Miami, Miami, Florida
| | - H J Neboori
- Department of Radiation Oncology, University of Miami, Miami, Florida
| | - A D Diaz
- Department of Radiation Oncology, University of Miami, Miami, Florida
| | - H Li
- Department of Epidemiology and Public Health, University of Miami, Miami, Florida
| | - D Kwon
- Cancer Research, Sylvester Cancer Center, University of Miami, Miami, Florida
| | - Joseph Panoff
- Department of Radiation Oncology, University of Miami, Miami, Florida
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Aristizabal P, Singer J, Cooper R, Wells KJ, Nodora J, Milburn M, Gahagan S, Schiff DE, Martinez ME. Participation in pediatric oncology research protocols: Racial/ethnic, language and age-based disparities. Pediatr Blood Cancer 2015; 62:1337-44. [PMID: 25755225 PMCID: PMC4482802 DOI: 10.1002/pbc.25472] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 01/21/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND Survival rates in pediatric oncology have improved dramatically, in part due to high patient participation in clinical trials. Although racial/ethnic inequalities in clinical trial participation have been reported in adults, pediatric data and studies comparing participation rates by socio-demographic characteristics are scarce. The goal of this study was to assess differences in research protocol participation for childhood cancer by age, sex, race/ethnicity, parental language, cancer type, and insurance status. PROCEDURE Data on enrollment in any protocol, biospecimen, or therapeutic protocols were collected and analyzed for newly diagnosed pediatric patients with cancer from 2008-2012 at Rady Children's Hospital. RESULTS Among the 353 patients included in the analysis, 304 (86.1%) were enrolled in any protocol. Enrollment in biospecimen and therapeutic protocols was 84.2% (261/310) and 81.1% (206/254), respectively. Logistic regression analyzes revealed significant enrollment underrepresentation in any protocol for Hispanics compared to Non-Hispanic whites (81% vs. 91%; Odds Ratio [OR], 0.43; 95% Confidence Interval [CI], 0.21-0.90; P = 0.021) and among children of Spanish-speaking vs. English-speaking parents (78% vs. 89%; OR, 0.45; 95%CI, 0.23-0.87; P = 0.016). Compared to patients aged 0-4 years, significant underrepresentation was also found among patients 15-21 years old (92% vs.72%; OR, 0.21; 95% CI, 0.09-0.48; P < 0.001). Similar trends were observed when analyzing enrollment in biospecimen and therapeutic protocols separately. CONCLUSIONS There was significant underrepresentation in protocol participation for Hispanics, children of Spanish-speaking parents, and patients ages 15-21. Research is needed to understand barriers to research participation among these groups underrepresented in pediatric oncology clinical trials.
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Affiliation(s)
- Paula Aristizabal
- Department of Pediatrics, University of California San Diego, San Diego, CA,Division of Pediatric Hematology/Oncology, Rady Children’s Hospital San Diego, San Diego, CA,Moores Cancer Center, University of California San Diego, La Jolla, CA
| | - Jenelle Singer
- Department of Pediatrics, University of California San Diego, San Diego, CA
| | - Renee Cooper
- Graduate School of Public Health, San Diego State University, San Diego, CA
| | - Kristen J. Wells
- Department of Psychology, San Diego State University, San Diego, CA,Department of Family and Preventive Medicine, University of California San Diego, La Jolla, CA
| | - Jesse Nodora
- Moores Cancer Center, University of California San Diego, La Jolla, CA,Department of Family and Preventive Medicine, University of California San Diego, La Jolla, CA
| | - Mehrzad Milburn
- Department of Pediatrics, University of California San Diego, San Diego, CA
| | - Sheila Gahagan
- Department of Pediatrics, University of California San Diego, San Diego, CA,Division of Pediatric Hematology/Oncology, Rady Children’s Hospital San Diego, San Diego, CA
| | - Deborah E. Schiff
- Department of Pediatrics, University of California San Diego, San Diego, CA,Division of Pediatric Hematology/Oncology, Rady Children’s Hospital San Diego, San Diego, CA
| | - Maria Elena Martinez
- Moores Cancer Center, University of California San Diego, La Jolla, CA,Department of Family and Preventive Medicine, University of California San Diego, La Jolla, CA
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Austin MT, Nguyen H, Eberth JM, Chang Y, Heczey A, Hughes DP, Lally KP, Elting LS. Health disparities are important determinants of outcome for children with solid tumor malignancies. J Pediatr Surg 2015; 50:161-6. [PMID: 25598116 PMCID: PMC4408987 DOI: 10.1016/j.jpedsurg.2014.10.037] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 10/06/2014] [Indexed: 10/24/2022]
Abstract
PURPOSE The purpose of this study was to identify health disparities in children with non-CNS solid tumor malignancies and examine their impact on disease presentation and outcome. METHODS We examined the records of all children (age≤18years) diagnosed with a non-CNS solid tumor malignancy and enrolled in the Texas Cancer Registry between 1995 and 2009 (n=4603). The primary outcome measures were disease stage and overall survival (OS). Covariates included gender, age, race/ethnicity, year of diagnosis, socioeconomic status (SES), and driving distance to the nearest pediatric cancer treatment facility. Statistical analyses included life table methods, logistic, and Cox regression. Statistical significance was defined as p<0.05. RESULTS Children with advanced-stage disease were more likely to be male, <10years old, and Hispanic or non-Hispanic Blacks (all p<0.05). Distance to treatment and SES did not impact stage of disease at presentation. However, Hispanic and non-Hispanic Blacks and patients in the lowest SES quartile had the worst 1- and 5-year survival (all p<0.05). The adjusted OS differed by age, race, and stage, but not SES or distance to the nearest treatment facility. CONCLUSIONS Race/ethnicity plays an important role in survival for children with non-CNS solid tumor malignancies. Future work should better define these differences to establish mechanisms to decrease their impact.
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Affiliation(s)
- Mary T. Austin
- Department of Pediatrics, Children’s Cancer Hospital at the University of Texas M.D. Anderson Cancer Center, Houston, Texas
,Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
,Department of Pediatric Surgery, The University of Texas Medical School at Houston, Houston, Texas
,Corresponding author at: The University of Texas M. D. Anderson Cancer Center, 1400 Pressler, Unit 1406, Houston, TX 77030–1439. Tel.: +1 713 794 4408; fax: +1 713 794 5720. .
| | - Hoang Nguyen
- Department of Health Services Research, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Jan M. Eberth
- Department of Epidemiology and Biostatistics, The University of South Carolina, Columbia, South Carolina
| | - Yuchia Chang
- Department of Health Services Research, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Andras Heczey
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas
| | - Dennis P. Hughes
- Department of Pediatrics, Children’s Cancer Hospital at the University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Kevin P. Lally
- Department of Pediatric Surgery, The University of Texas Medical School at Houston, Houston, Texas
| | - Linda S. Elting
- Department of Health Services Research, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
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Alexander S, Kraveka JM, Weitzman S, Lowe E, Smith L, Lynch JC, Chang M, Kinney MC, Perkins SL, Laver J, Gross TG, Weinstein H. Advanced stage anaplastic large cell lymphoma in children and adolescents: results of ANHL0131, a randomized phase III trial of APO versus a modified regimen with vinblastine: a report from the children's oncology group. Pediatr Blood Cancer 2014; 61:2236-42. [PMID: 25156886 PMCID: PMC4682366 DOI: 10.1002/pbc.25187] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 06/25/2014] [Indexed: 01/03/2023]
Abstract
BACKGROUND Optimal therapy for children and adolescents with advanced stage anaplastic large cell lymphoma (ALCL) is unknown. ANHL0131 examined whether a maintenance regimen including vinblastine compared to the standard APO (doxorubicin, prednisone, vincristine, methotrexate, 6-mercaptopurine) regimen would result in superior event-free survival. PROCEDURE One hundred and twenty five eligible patients were enrolled. Induction was identical for both arms. Post induction patients were randomized to receive APO with vincristine every 3 weeks or a regimen that substituted vincristine with weekly vinblastine (APV). RESULTS There was no difference between the patients randomized to the APO versus APV arms in either event free survival (EFS) or overall survival (OS) (three year EFS 74% vs. 79%, P = 0.68 and three years OS of 84% vs. 86%, P = 0.87, respectively). Patients in the APV arm required dose reduction secondary to myelosuppression and had a higher incidence of neutropenia as well as infection with neutropenia compared to those in the APO arm (P < 0.001, P = 0.019, respectively). CONCLUSIONS Treatment with weekly vinblastine instead of every three week vincristine as part of multi-agent maintenance therapy did not result in improvement in EFS or OS. Weekly vinblastine was associated with increased toxicity. (ClinicalTrials.gov Identifier NCT00059839).
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Affiliation(s)
- Sarah Alexander
- Division of Pediatric Hematology-Oncology, Hospital for Sick Children, Toronto, Ontario
| | - Jacqueline M Kraveka
- Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston, South Carolina
| | - Sheila Weitzman
- Division of Pediatric Hematology-Oncology, Hospital for Sick Children, Toronto, Ontario
| | - Eric Lowe
- Division of Pediatric Hematology/Oncology, Children’s Hospital of the King’s Daughters, Norfolk, VA
| | - Lynette Smith
- COG Data Center and University of Nebraska Medical Center, Omaha, Nebraska
| | - James C Lynch
- COG Data Center and University of Nebraska Medical Center, Omaha, Nebraska
| | - Myron Chang
- Department of Biostatistics, University of Florida, Gainesville, Florida
| | - Marsha C. Kinney
- Department of Pathology, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Sherrie L. Perkins
- Department of Pathology, University of Utah Health Sciences and ARUP Institute, Salt Lake City, Utah
| | - Joseph Laver
- St. Jude Children's Research Hospital Memphis, Memphis, Tennessee
| | - Thomas G. Gross
- Department of Pediatric Hematology-Oncology, Nationwide Children's Hospital, Columbus, Ohio
| | - Howard Weinstein
- Division of Pediatric Hematology-Oncology, Massachusetts General Hospital, Boston, Massachusetts
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Racial disparity in breast cancer survival: the impact of pre-treatment hematologic variables. Cancer Causes Control 2014; 26:45-56. [PMID: 25359303 DOI: 10.1007/s10552-014-0481-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 10/16/2014] [Indexed: 01/01/2023]
Abstract
PURPOSE A survival disparity of black versus white breast cancer patients has been extensively documented but not adequately explained. Blacks and whites also have significant differences in hematologic traits including hemoglobin (HGB). However, a link between survival disparity and hematologic differences has not been reported. We aimed to explore the effect of pre-treatment hematologic variables on this survival disparity. METHODS We sequentially matched 443 black patients, using a minimum distance approach, to four different sets of 443 whites on demographics (age, year of diagnosis, smoking, and drinking status), tumor presentation (all demographic variables plus tumor stage, grade, and hormone receptor status), treatment (all presentation variables plus surgery, chemotherapy, radiation therapy, and hormone therapy), and presentation plus pre-treatment hematologic variables. Racial survival for each matched dataset was analyzed by Cox proportional hazards model. RESULTS We found that white patients matched on demographic characteristics had more favorable survival than blacks [hazard ratio (HR) 0.57, 95 % confidence interval (CI) 0.42-0.77, p log-rank = 0.0002]. Presentation match diminished this disparity [HR 0.72 (0.54-0.95), p log-rank = 0.0199], which was not further reduced in treatment match [HR 0.73 (0.55-0.96), p log-rank = 0.0249]. However, the survival disparity was largely reduced when pre-treatment level of HGB or red blood cell distribution width was further matched in addition to presentation match [HR 0.83 (0.64-1.09), p log-rank = 0.1819 and HR 0.83 (0.64-1.09), p log-rank = 0.1760, respectively]. CONCLUSIONS We found that in our patient population, differences in tumor presentation and certain pre-treatment hematologic traits, but not treatment, were associated with the survival disparity between black and white breast cancer patients.
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Gupta S, Wilejto M, Pole JD, Guttmann A, Sung L. Low socioeconomic status is associated with worse survival in children with cancer: a systematic review. PLoS One 2014; 9:e89482. [PMID: 24586813 PMCID: PMC3935876 DOI: 10.1371/journal.pone.0089482] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 01/21/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND While low socioeconomic status (SES) has been associated with inferior cancer outcome among adults, its impact in pediatric oncology is unclear. Our objective was therefore to conduct a systematic review to determine the impact of SES upon outcome in children with cancer. METHODS We searched Ovid Medline, EMBASE and CINAHL from inception to December 2012. Studies for which survival-related outcomes were reported by socioeconomic subgroups were eligible for inclusion. Two reviewers independently assessed articles and extracted data. Given anticipated heterogeneity, no quantitative meta-analyses were planned a priori. RESULTS Of 7,737 publications, 527 in ten languages met criteria for full review; 36 studies met final inclusion criteria. In low- and middle-income countries (LMIC), lower SES was uniformly associated with inferior survival, regardless of the measure chosen. The majority of associations were statistically significant. Of 52 associations between socioeconomic variables and outcome among high-income country (HIC) children, 38 (73.1%) found low SES to be associated with worse survival, 15 of which were statistically significant. Of the remaining 14 (no association or high SES associated with worse survival), only one was statistically significant. Both HIC studies examining the effect of insurance found uninsured status to be statistically associated with inferior survival. CONCLUSIONS Socioeconomic gradients in which low SES is associated with inferior childhood cancer survival are ubiquitous in LMIC and common in HIC. Future studies should elucidate mechanisms underlying these gradients, allowing the design of interventions mediating socioeconomic effects. Targeting the effect of low SES will allow for further improvements in childhood cancer survival.
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Affiliation(s)
- Sumit Gupta
- Division of Haematology/Oncology, the Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
- Program in Child Health Evaluative Sciences, the Hospital for Sick Children, Toronto, Ontario, Canada
- Institute for Health, Policy Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Marta Wilejto
- Division of Haematology/Oncology, the Hospital for Sick Children, Toronto, Ontario, Canada
- Program in Child Health Evaluative Sciences, the Hospital for Sick Children, Toronto, Ontario, Canada
| | - Jason D. Pole
- Pediatric Oncology Group of Ontario, Toronto, Ontario, Canada
- Institute for Clinical and Evaluative Sciences, Toronto, Ontario, Canada
| | - Astrid Guttmann
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
- Institute for Clinical and Evaluative Sciences, Toronto, Ontario, Canada
- Division of Paediatric Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
- Institute for Health, Policy Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Lillian Sung
- Division of Haematology/Oncology, the Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
- Program in Child Health Evaluative Sciences, the Hospital for Sick Children, Toronto, Ontario, Canada
- Institute for Health, Policy Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
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Darmawikarta D, Pole JD, Gupta S, Nathan PC, Greenberg M. The association between socioeconomic status and survival among children with Hodgkin and non-Hodgkin lymphomas in a universal health care system. Pediatr Blood Cancer 2013; 60:1171-7. [PMID: 23129171 DOI: 10.1002/pbc.24386] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 10/03/2012] [Indexed: 11/09/2022]
Abstract
BACKGROUND The association between socioeconomic status (SES) and cancer survival has been studied extensively in adults. However, little is known about this relationship in the pediatric population, specifically in jurisdictions with universal health care insurance programs. Our aim was to determine whether lower SES is associated with poorer survival in pediatric Hodgkin (HL) and non-Hodgkin lymphoma (NHL) patients in Ontario. PROCEDURE All incident cases of HL and NHL in children between 0 and 14 years old diagnosed in Ontario between January 1st, 1985 and December 31st, 2006 were identified through the Pediatric Oncology Group of Ontario Networked Information System. Neighborhood income quintile and material deprivation quintile at diagnosis were used as proxies for SES. Cox proportional hazards regressions were used to assess the association between SES and the risk of event-free or overall survival. RESULTS A total of 692 patients were included in the analysis: 302 HL and 390 NHL. SES was not associated with survival (overall or event-free) among HL and NHL patients (P > 0.05 for all four comparisons, i.e., HL/NHL, EFS/OS) after adjustment for age, sex, period of diagnosis, and disease stage. There were no differences in the distribution of disease stage across SES strata at the time of diagnosis. Similarly, the distribution of deaths among long-term survivors (survived ≥5 years from diagnosis) did not differ across SES strata (P > 0.05). CONCLUSIONS SES was not associated with risk of death among pediatric HL and NHL patients in Ontario. This was consistent through the cancer trajectory, including diagnosis, treatment, and survivorship.
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Evens AM, Antillón M, Aschebrook-Kilfoy B, Chiu BCH. Racial disparities in Hodgkin's lymphoma: a comprehensive population-based analysis. Ann Oncol 2012; 23:2128-2137. [PMID: 22241896 DOI: 10.1093/annonc/mdr578] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023] Open
Abstract
BACKGROUND Racial disparity has been investigated in a number of cancers; however, there remains a comparative paucity of data in Hodgkin's lymphoma (HL). PATIENTS AND METHODS We examined time-, age-, and gender-specific incidence, disease characteristics, and survival across and within races for adolescent/adult HL (age 10-79 years) diagnosed during 1992-2007 in the SEER 13 registries. RESULTS A total of 15 662 HL cases were identified [11,211 non-Hispanic whites, 2067 Hispanics, 1662 blacks, and 722 Asian/Pacific Islanders (A/PI)]. Similar to whites, A/PIs had bimodal age-specific incidence, while blacks and Hispanics did not. Further, HL was significantly more common in Hispanics versus whites age>65 years (7.0/1×10(6) versus 4.5/1×10(6), respectively, P<0.01). By place of birth, US-born Hispanics and A/PIs age 20-39 years had higher incidence of HL versus their foreign-born counterparts (P<0.05), however, rates converged age>40 years. Interestingly, from 1992-1997 to 2003-2007, A/PI incidence rates increased >50% (P<0.001). Moreover, this increase was restricted to US-born A/PI. We also identified a number of disease-related differences based on race. Finally, 5-, 10-, and 15-year overall survival rates were inferior for blacks and Hispanics compared with whites (P<0.005 and P<0.001, respectively) and A/PI (P<0.018 and P<0.001, respectively). These differences persisted on multivariate analysis. CONCLUSION Collectively, we identified multiple racial disparities, including survival, in adolescent/adult HL.
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Affiliation(s)
- A M Evens
- Division of Hematology/Oncology, The University of Massachusetts Medical School and the UMass Memorial Cancer Center, Worcester.
| | - M Antillón
- Department of Health Studies, The University of Chicago, Chicago
| | | | - B C-H Chiu
- Department of Health Studies, The University of Chicago, Chicago; The University of Chicago Comprehensive Cancer Center, Chicago, USA
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Smith EC, Ziogas A, Anton-Culver H. Association between insurance and socioeconomic status and risk of advanced stage Hodgkin lymphoma in adolescents and young adults. Cancer 2012; 118:6179-87. [PMID: 22736071 DOI: 10.1002/cncr.27684] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 01/06/2012] [Accepted: 02/01/2012] [Indexed: 11/07/2022]
Abstract
BACKGROUND Hodgkin lymphoma (HL) is one of the most common types of cancer among adolescents and young adults (AYAs) in the United States. Unfortunately, a greater percentage of AYAs are presenting with an advanced stage of disease at the time of diagnosis compared with their younger counterparts. METHODS The objective of the current study was to examine the association between possible barriers and characteristics (including gender, race, birthplace, marital status, socioeconomic status [SES], and insurance status) that may increase the risk of advanced stage HL at the time of diagnosis in a large cohort of AYA patients with HL from the California Cancer Registry (7343 incident cases of HL diagnosed from 1988-2006, between ages 15 years-40 years). RESULTS AYAs with advanced stage HL were more likely to be male, of Hispanic or black race/ethnicity, foreign born, single, of lower SES, and uninsured or to have only public health insurance (P < .05). Multivariate logistic regression analysis demonstrated that there was a significant increase in the odds of having advanced HL in males (odds ratio [OR], 1.57; 95% confidence interval [95% CI], 1.42-1.74 [P < .0001]), those with the lowest SES (OR, 1.47; 95% CI, 1.23-1.75 [P = .0003]), those without health insurance (OR, 1.76; 95% CI, 1.34-2.31 [P < .0001]), and those with public health insurance (OR, 1.45; 95% CI, 1.23-1.71 [P < .0001]). CONCLUSIONS A strong association was found between male gender, lower SES, and lack of health insurance and advanced stage HL at the time of diagnosis in AYAs (See editorial on pages 000-000, this issue.).
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Affiliation(s)
- Erlyn C Smith
- Department of Pediatric Hematology-Oncology, Children's Hospital of Orange County, Orange, California, USA
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Pui CH, Pei D, Pappo AS, Howard SC, Cheng C, Sandlund JT, Furman WL, Ribeiro RC, Spunt SL, Rubnitz JE, Jeha S, Hudson MM, Kun LE, Merchant TE, Kocak M, Broniscer A, Metzger ML, Downing JR, Leung W, Evans WE, Gajjar A. Treatment outcomes in black and white children with cancer: results from the SEER database and St Jude Children's Research Hospital, 1992 through 2007. J Clin Oncol 2012; 30:2005-12. [PMID: 22547602 DOI: 10.1200/jco.2011.40.8617] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Treatment outcome for black patients with cancer has been significantly worse than for their white counterparts. We determined whether recent improved treatment had narrowed the gap in outcome between black and white pediatric patients. PATIENTS AND METHODS In a parallel comparison, we analyzed survival by disease category between black and white patients with childhood cancer registered in one of the 17 cancer registries of the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) program or treated at St Jude Children's Research Hospital, which provides comprehensive treatment to all patients regardless of their ability to pay, from 1992 to 2000 and from 2001 to 2007. RESULTS Analysis of the SEER data indicated that in both study periods, black patients had significantly poorer rates of survival than did white patients, with the exception of a few types of cancer. Despite significantly improved treatment outcomes for patients who were treated from 2001 to 2007, the racial difference in survival has actually widened for acute myeloid leukemia and neuroblastoma. By contrast, in the cohorts treated at St Jude Children's Research Hospital, there were no significant differences in survival between black and white patients in either study period, regardless of the cancer type. Importantly, the outcome of treatment for acute lymphoblastic leukemia, acute myeloid leukemia, and retinoblastoma has improved in parallel for both races during the most recent study period. CONCLUSION With equal access to comprehensive treatment, black and white children with cancer can achieve the same high cure rates.
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Affiliation(s)
- Ching-Hon Pui
- St Jude Children's Research Hospital, Memphis, TN 38105, USA.
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Bhatia S. Disparities in cancer outcomes: lessons learned from children with cancer. Pediatr Blood Cancer 2011; 56:994-1002. [PMID: 21328525 PMCID: PMC3369622 DOI: 10.1002/pbc.23078] [Citation(s) in RCA: 144] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Accepted: 01/18/2011] [Indexed: 11/05/2022]
Abstract
Disparities in cancer burden by race/ethnicity have been reported, primarily in adults with cancer. However, there appear to be gaps in the pediatric oncology literature with regards to a comprehensive overview on this topic. Extant literature is used to highlight the results of studies focusing on racial and ethnic disparities in outcome observed in selected childhood cancers. A comprehensive approach is utilized to understand possible underlying causes of disparities in cancer outcomes, and to highlight the gaps that currently exist. This review helps define areas of future research that could help develop targeted, disease-specific approaches to eliminate the disparities.
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Affiliation(s)
- Smita Bhatia
- Department of Population Sciences, City of Hope, Duarte, CA 91010, USA.
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Bazzeh F, Rihani R, Howard S, Sultan I. Comparing adult and pediatric Hodgkin lymphoma in the Surveillance, Epidemiology and End Results Program, 1988-2005: an analysis of 21 734 cases. Leuk Lymphoma 2010; 51:2198-207. [PMID: 21054151 DOI: 10.3109/10428194.2010.525724] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We analyzed data from 18 898 adults (age ≥20 years) and 2836 children/adolescents reported in the Surveillance, Epidemiology and End Results (SEER) database as having Hodgkin lymphoma (HL), diagnosed from 1988 to 2005. The nodular sclerosis subtype was significantly more common in the pediatric age group (76% in children/adolescents vs. 61% in adults, p < 0.001). The mixed cellularity subtype was more prevalent in children <10 years old (22%), but less likely in older children/adolescents (8.5%). Systemic symptoms were reported in 39% of children/adolescents and in 48% of adults (p < 0.001). Children/adolescents had significantly better HL-specific survival than adults (5-year survival rate, 96% ± 0.4% vs.88% ± 0.3%, p < 0.001). Using a Cox proportional-hazards regression model in patients with classical HL, the prognostic factors significantly impacting survival were age, histology, stage, B symptoms, year of diagnosis, and race. The only adverse prognostic factors that were significant when this analysis was restricted to children/adolescents were stage IV disease and the presence of B symptoms. In conclusion, several differences in clinicopathologic features and outcomes were identified between children/adolescents and adults with HL, and this was particularly noted in young children (<10 years).
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Affiliation(s)
- Faiha Bazzeh
- Department of Pediatric Oncology, King Hussein Cancer Center, Amman, Jordan
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Ali A, Sayed H, Farrag A, El-Sayed M. Risk-based combined-modality therapy of pediatric Hodgkin's lymphoma: A retrospective study. Leuk Res 2010; 34:1447-52. [DOI: 10.1016/j.leukres.2010.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 06/12/2010] [Accepted: 06/13/2010] [Indexed: 11/29/2022]
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Abstract
BACKGROUND To identify predictors for 2 risk measures-"proven invasive bacterial infection or culture-negative sepsis (IBD)" and "clinical complications (CC)"-in pediatric cancer patients with fever and neutropenia (FN). METHODS Records of 390 patients with FN hospitalized over 2 years were reviewed. For the 332 who met inclusion criteria, one FN episode was randomly selected. Independent predictors at presentation were analyzed using multiple regression models. Optimal cut-off risk prediction scores were determined. These models were validated by bootstrap analysis. RESULTS Patients' median age was 6.0 years; 66% had an underlying diagnosis of leukemia. Independent predictors of IBD (n = 56) were absolute neutrophil count <100, temperature at presentation > or =39.0 degrees C, "sick" clinical appearance, and underlying diagnosis of acute myeloid leukemia. A total weighted score <24 reliably identified patients at low risk for IBD. Independent predictors of CC (n = 47) were relapse of malignancy, non-white race, "sick" clinical appearance, and underlying diagnosis of acute myeloid leukemia. A total weighted score <19 predicted patients at low risk for CC. Of those misclassified as low risk, 11 of 12 with IBD and 3 of 9 with CC had the outcome within 24 hours of presentation. Of the remaining patients classified as low-risk for IBD and CC, 99.5% and 97.1%, respectively, remained outcome-free after 24 hours of observation. CONCLUSIONS This study identifies predictors of infection/complications in pediatric patients with FN, establishes clinical cut-off scores and highlights the importance of the initial clinical impression and 24 hours of observation. These prediction models warrant prospective validation.
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Moore DH, Tian C, Monk BJ, Long HJ, Omura GA, Bloss JD. Prognostic factors for response to cisplatin-based chemotherapy in advanced cervical carcinoma: a Gynecologic Oncology Group Study. Gynecol Oncol 2009; 116:44-9. [PMID: 19853287 DOI: 10.1016/j.ygyno.2009.09.006] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2009] [Revised: 08/31/2009] [Accepted: 09/04/2009] [Indexed: 11/18/2022]
Abstract
PURPOSE Cisplatin-based combination chemotherapy is considered standard treatment for advanced/recurrent cervical carcinoma; however, the majority of patients do not respond. This study was undertaken to identify the prognostic factors and develop a model predictive of (non-) response to chemotherapy. METHODS Four-hundred twenty-eight patients with advanced cervical cancer who received a cisplatin-containing combination in three Gynecologic Oncology Group (GOG) protocols (110, 169 and 179) were evaluated for baseline clinical characteristics and multivariate analysis was conducted to identify factors independently prognostic predictive of response using a Logistic regression model. A predictive model was developed and externally validated using an independent GOG protocol (149) data. RESULTS Multivariate analysis identified five factors (African-American, performance status [PS] >0, pelvic disease, prior radiosensitizer and time interval from diagnosis to first recurrence <1 year) independently prognostic of poor response. A simple prognostic index was derived based on the total number of risk factors. When patients were classified into three risk groups (low risk: 0-1 factor; mid risk: 2-3 factors; high risk: 4-5 factors), patients with 4-5 risk factors were estimated to have a response rate of only 13%, and median progression-free and overall survival of 2.8 months and 5.5 months, respectively. The accuracy of the index was supported by both internal and external datasets. CONCLUSIONS A simple index based on five prognostic factors may have utility in clinical practice to identify the women who are not likely to respond to the cisplatin-containing regimens. This subgroup of patients should be considered for non-cisplatin chemotherapy or investigational trials.
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Affiliation(s)
- David H Moore
- Gynecologic Oncology of Indiana, 5255 East Stop 11 Road, Suite 310, Indianapolis, IN 46237, USA.
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Baker KS, Davies SM, Majhail NS, Hassebroek A, Klein JP, Ballen KK, Bigelow CL, Frangoul HA, Hardy CL, Bredeson C, Dehn J, Friedman D, Hahn T, Hale G, Lazarus HM, LeMaistre CF, Loberiza F, Maharaj D, McCarthy P, Setterholm M, Spellman S, Trigg M, Maziarz RT, Switzer G, Lee SJ, Rizzo JD. Race and socioeconomic status influence outcomes of unrelated donor hematopoietic cell transplantation. Biol Blood Marrow Transplant 2009; 15:1543-54. [PMID: 19896078 DOI: 10.1016/j.bbmt.2009.07.023] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2009] [Accepted: 07/27/2009] [Indexed: 12/15/2022]
Abstract
Success of hematopoietic cell transplantation (HCT) can vary by race, but the impact of socioeconomic status (SES) is not known. To evaluate the role of race and SES, we studied 6207 unrelated-donor myeloablative (MA) HCT recipients transplanted between 1995 and 2004 for acute or chronic leukemia or myelodysplastic syndrome (MDS). Patients were reported by transplant center to be White (n = 5253), African American (n = 368), Asian/Pacific-Islander (n = 141), or Hispanic (n = 445). Patient income was estimated from residential zip code at time of HCT. Cox regression analysis adjusting for other significant factors showed that African American (but not Asian or Hispanic) recipients had worse overall survival (OS) (relative-risk [RR] 1.47; 95% confidence interval [CI] 1.29-1.68, P < .001) compared to Whites. Treatment-related mortality (TRM) was higher in African Americans (RR 1.56; 95% CI 1.34-1.83, P < .001) and in Hispanics (RR 1.30; 95% CI 1.11-1.51, P = .001). Across all racial groups, patients with median incomes in the lowest quartile (<$34,700) had worse OS (RR 1.15; 95% CI 1.04-1.26, P = .005) and higher risks of TRM (RR 1.21; 1.07-1.36, P = .002). Inferior outcomes among African Americans are not fully explained by transplant-related factors or SES. Potential other mechanisms such as genetic polymorphisms that have an impact on drug metabolism or unmeasured comorbidities, socioeconomic factors, and health behaviors may be important. Low SES, regardless of race, has a negative impact on unrelated donor HCT outcomes.
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Affiliation(s)
- K Scott Baker
- Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA.
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Haddy TB, Mosher RB, Reaman GH. Late effects in long-term survivors after treatment for childhood acute leukemia. Clin Pediatr (Phila) 2009; 48:601-8. [PMID: 19264722 DOI: 10.1177/0009922809332680] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND This is a report of late effects in childhood cancer survivors seen in the follow-up clinic of a single institution. MATERIALS AND METHODS There were 324 acute leukemia survivors in the database of the Long Term Follow Up Clinic of Children's National Medical Center from January 1, 1997, through June 30, 2005. RESULTS Of the 324 acute leukemia survivors, 228 were white, 48 black, 20 Hispanic, and 12 other. Their follow-up time was 0 to 25 years (mean 5.3 years). One or more adverse events occurred in 74.1% of the 324 survivors. Defective physical growth was most commonly reported, followed by disturbed neurocognitive function, emotional difficulties, cardiac abnormalities, hypertension, osteoporosis/osteopenia, fractures, and second neoplasms. More black and Hispanic children had acute myeloid leukemia, relapses, cardiac problems, and hypertension than white and other subjects. CONCLUSION Childhood cancer survivors require lifelong monitoring, with prompt identification and treatment of adverse late effects.
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Affiliation(s)
- Theresa B Haddy
- Department of Pediatric Hematology-Oncology, Children's National Medical Center, Washington, DC,USA.
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Pahwa P, Karunanayake CP, Spinelli JJ, Dosman JA, McDuffie HH. Ethnicity and incidence of Hodgkin lymphoma in Canadian population. BMC Cancer 2009; 9:141. [PMID: 19432977 PMCID: PMC2690601 DOI: 10.1186/1471-2407-9-141] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2008] [Accepted: 05/11/2009] [Indexed: 11/13/2022] Open
Abstract
Background Research has shown that ethnicity is a significant predictor of Hodgkin lymphoma (HL). Variations in cancer incidence among ethnic groups in the same country can lead to important information in the search for etiological factors. Other risk factors important in the etiology of HL are medical history and exposure to pesticides. In this report we investigated the association between ethnicity and HL in the presence of medical history, and exposure to pesticides. Methods The data resulting from a matched population-based case-control study conducted in six provinces of Canada (Ontario, Quebec, Manitoba, Saskatchewan, Alberta, and British Columbia) was analyzed to determine whether or not there was any association between ethnicity and incidence of HL when adjusted for personal medical history and pesticide exposure. Information on ethnicity, personal medical history, and pesticide exposure was collected by questionnaires via mail on 316 men diagnosed with HL; and on 1506 controls. A conditional logistic regression was utilized and results were presented as odds ratios and 95% confidence intervals. Results In our study population, the distribution of ethnic groups was: 38.5% North American, 15% British, 8.4% Western European, 8.2% Eastern European, 1.7% Asian, 1.4% Scandinavian and 27% of other ethnic origin. Compared to North Americans (i) the risk of HL was greater among the Eastern European descendents (Odds Ratio (ORadj): 1.82; 95% confidence interval (CI): 1.02, 3.25) and Western European (ORadj: 1.62; 95% CI: 0.95–2.76) descent population (borderline significance at 5% level); and (ii) the risk of HL was lower in Asian descents. Diagnosis with measles (ORadj: 0.72, 95% C.I.: 0.53–0.98) and/or positive history of allergy desensitization shots (ORadj: 0.55, 95% C.I.: 0.30–0.99) were negatively associated with the incidence of HL, while diagnosis with acne (ORadj: 2.12, 95% C.I.: 1.19–3.78), shingles (ORadj: 2.41, 95% C.I.: 1.38–4.22) and positive family history of cancer (ORadj: 1.93, 95% C.I.: 1.40–2.65) increased the risk of HL. Exposure to individual herbicide dichlorprop showed an increased risk of HL (ORadj: 6.35, 95% C.I.: 1.56–25.92). Conclusion In Canada, compared to North Americans descendents, the risk of HL was significantly greater among the Eastern European and Western European descent population. Our results related to association between ethnicity and HL support the findings reported by other researchers. Our data showed that subjects who were diagnosed with measles or had allergy desensitization shots negatively associated with the incidence of HL; and other medical conditions, ever diagnosed with acne, and positive family history of cancer were positively associated with the incidence of HL.
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Affiliation(s)
- Punam Pahwa
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Royal University Hospital, Saskatoon, SK, Canada.
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Hochberg J, Cairo MS. Insight into the biology and treatment of pediatric lymphomas: Clues from international studies. Pediatr Blood Cancer 2009; 52:153-4. [PMID: 19034906 DOI: 10.1002/pbc.21862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jessica Hochberg
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Morgan Stanley Children's Hospital of New York Presbyterian, Columbia University, New York, New York, USA
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Stefan DC, Stones D, Dippenaar A, Kidd M. Ethnicity and characteristics of Hodgkin lymphoma in children. Pediatr Blood Cancer 2009; 52:182-5. [PMID: 18937324 DOI: 10.1002/pbc.21804] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AIM To identify ethnic group differences in the prognostic of Hodgkin lymphoma (HL) in South African children. PATIENTS AND METHODS In order to create a larger database, cases were pooled from two South African hospitals: Tygerberg in the Western Cape and Bloemfontein Academic Complex in Free State. Self-assigned ethnicity was used to allocate the children to the following groups: black, white, and colored (historical descendants of couples of distinct ethnicity, the "Cape colored" are the largest population group in Western Cape). Retrospective data over 21 years were obtained from the tumor registry. Age at presentation, sex, ethnic group, stage, histological type, treatment protocol, event-free survival interval, and mortality were analyzed. The statistical significance of the findings was tested using the chi-square, Mann-Whitney U, and Kruskal-Wallis tests, as indicated. RESULTS The study population of 138 comprised 78 black (56.5%), 38 colored (27.5%), and 22 white (16%) children under 15 years of age. There was a 3:1 predominance of the male gender. The median age at diagnosis was 8 years 11 months. Black patients presented at the youngest age (median 103 months), whereas white patients were the oldest at presentation (median age 133 months; P = 0.04).Forty-five percent of all patients were seen in stage 2. Black and colored patients presented with significantly more advanced stage disease (P = 0.04) than whites. B symptoms were evenly distributed among ethnic groups; they increased the mortality ratio from 10% to 33% (P = 0.0019). Histologically, mixed cellularity was seen in 50% of the black children, while nodular sclerosis was found in 50% of whites. The overall survival rate is 79%, with 68% in whites, 84% in patients of mixed ethnicity, and 79% in blacks (P = 0.35). CONCLUSIONS White children had the worst HL prognosis in this series, in spite of a less advanced stage at presentation.
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Affiliation(s)
- Daniela Cristina Stefan
- Department of Paediatrics and Child Health, Tygerberg Hospital and Stellenbosch University, Tygerberg, Cape Town, South Africa.
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