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Vaidya A, Chen RJ, Williamson DFK, Song AH, Jaume G, Yang Y, Hartvigsen T, Dyer EC, Lu MY, Lipkova J, Shaban M, Chen TY, Mahmood F. Demographic bias in misdiagnosis by computational pathology models. Nat Med 2024; 30:1174-1190. [PMID: 38641744 DOI: 10.1038/s41591-024-02885-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 02/23/2024] [Indexed: 04/21/2024]
Abstract
Despite increasing numbers of regulatory approvals, deep learning-based computational pathology systems often overlook the impact of demographic factors on performance, potentially leading to biases. This concern is all the more important as computational pathology has leveraged large public datasets that underrepresent certain demographic groups. Using publicly available data from The Cancer Genome Atlas and the EBRAINS brain tumor atlas, as well as internal patient data, we show that whole-slide image classification models display marked performance disparities across different demographic groups when used to subtype breast and lung carcinomas and to predict IDH1 mutations in gliomas. For example, when using common modeling approaches, we observed performance gaps (in area under the receiver operating characteristic curve) between white and Black patients of 3.0% for breast cancer subtyping, 10.9% for lung cancer subtyping and 16.0% for IDH1 mutation prediction in gliomas. We found that richer feature representations obtained from self-supervised vision foundation models reduce performance variations between groups. These representations provide improvements upon weaker models even when those weaker models are combined with state-of-the-art bias mitigation strategies and modeling choices. Nevertheless, self-supervised vision foundation models do not fully eliminate these discrepancies, highlighting the continuing need for bias mitigation efforts in computational pathology. Finally, we demonstrate that our results extend to other demographic factors beyond patient race. Given these findings, we encourage regulatory and policy agencies to integrate demographic-stratified evaluation into their assessment guidelines.
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Affiliation(s)
- Anurag Vaidya
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Cancer Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Cancer Data Science Program, Dana-Farber Cancer Institute, Boston, MA, USA
- Health Sciences and Technology, Harvard-MIT, Cambridge, MA, USA
| | - Richard J Chen
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Cancer Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Cancer Data Science Program, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Drew F K Williamson
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Andrew H Song
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Cancer Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Cancer Data Science Program, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Guillaume Jaume
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Cancer Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Cancer Data Science Program, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Yuzhe Yang
- Electrical Engineering and Computer Science, MIT, Cambridge, MA, USA
| | - Thomas Hartvigsen
- School of Data Science, University of Virginia, Charlottesville, VA, USA
| | - Emma C Dyer
- T.H. Chan School of Public Health, Harvard University, Cambridge, MA, USA
| | - Ming Y Lu
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Cancer Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Cancer Data Science Program, Dana-Farber Cancer Institute, Boston, MA, USA
- Electrical Engineering and Computer Science, MIT, Cambridge, MA, USA
| | - Jana Lipkova
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Cancer Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Cancer Data Science Program, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Muhammad Shaban
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Cancer Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Cancer Data Science Program, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Tiffany Y Chen
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Cancer Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Cancer Data Science Program, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Faisal Mahmood
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
- Cancer Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA.
- Cancer Data Science Program, Dana-Farber Cancer Institute, Boston, MA, USA.
- Harvard Data Science Initiative, Harvard University, Cambridge, MA, USA.
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2
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Pleasant V. A Public Health Emergency: Breast Cancer Among Black Communities in the United States. Obstet Gynecol Clin North Am 2024; 51:69-103. [PMID: 38267132 DOI: 10.1016/j.ogc.2023.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
While Black people have a similar incidence of breast cancer compared to White people, they have a 40% increased death rate. Black people are more likely to be diagnosed with aggressive subtypes such as triple-negative breast cancer. However, despite biological factors, systemic racism and social determinants of health create delays in care and barriers to treatment. While genetic testing holds incredible promise for Black people, uptake remains low and results may be challenging to interpret. There is a need for more robust, multidisciplinary, and antiracist interventions to reverse breast cancer-related racial disparities.
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Affiliation(s)
- Versha Pleasant
- Department of Obstetrics and Gynecology, Cancer Genetics & Breast Health Clinic, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA.
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3
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Jackson T, Wahab RA, Bankston K, Mehta TS. Raising Cultural Awareness and Addressing Barriers to Breast Imaging Care for Black Women. JOURNAL OF BREAST IMAGING 2024; 6:72-79. [PMID: 38142231 DOI: 10.1093/jbi/wbad091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Indexed: 12/25/2023]
Abstract
Health care disparities, which are differences in the attainment of full health potential among population groups, have been documented across medical conditions, clinical settings, and diagnostic and treatment modalities. Deeply rooted health care disparities due to many factors have affected how Black women (BW) view medical care including screening mammography. This article explores health care disparities around breast cancer in BW and how patient distrust, provider biases, race, and social determinants of health continue to have negative effects on breast cancer outcomes in BW, despite medical advances in breast cancer detection and management. In addition, this article addresses the importance of culturally competent care for BW around breast cancer awareness, screening, and treatment, and offers strategies to address disparities and rebuild trust.
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Affiliation(s)
- Tatianie Jackson
- Department of Radiology, Geisinger Wyoming Valley Medical Center, Wilkes-Barre, PA, USA
| | - Rifat A Wahab
- Department of Radiology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Karen Bankston
- College of Nursing, University of Cincinnati, Cincinnati, OH, USA
| | - Tejas S Mehta
- Department of Radiology, UMass Memorial Medical Center/UMass Chan Medical School, Worcester, MA, USA
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4
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Makhetha M, Chabilal N, Aldous C. Recent trends in hereditary breast cancer incidence by race and age in KwaZulu-Natal, South Africa: An 11-year single-centre retrospective study (2011-2021). Int J Cancer 2024; 154:65-70. [PMID: 37578038 DOI: 10.1002/ijc.34687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/15/2023]
Abstract
Breast cancer incidence has increased globally in the last decade, especially in low- and middle-income countries. In Sub-Saharan Africa, breast cancer trends have been described only in a few populations owing to the scarcity of population-specific data. Using data collected between 2011 and 2021 at Inkosi Albert Luthuli Central Hospital, this retrospective study describes demographic and genetic trends for hereditary breast cancer patients in the KwaZulu-Natal province, South Africa. Six hundred and forty-five patients were included, of whom 44.3% were Black, 36.8% Indian, 15.6% White and 3.2% Coloured. The number of annual new cases increased from eight in 2011 to 145 in 2021, with a notable increase among Blacks. The mean onset age was 46 years, and Black patients were diagnosed ~10 years earlier than White and Indian patients. Triple-negative breast cancers accounted for 20.3% of hereditary cases, and 51.1% of them were Black. Bilateral and recurrent breast cancers constituted 7.4%, while pathogenic sequence variants in BRCA1/2 were reported in 10.4% of all patients, and the majority were Blacks and Indians. Overall, the KwaZulu-Natal province has seen an increase in hereditary breast cancer incidence in the past decade. Despite testing negative for pathogenic sequence variants, Black women frequently presented with breast cancers that are BRCA1-like, while Indians presented with extensive family history. This suggests that South African patients may require unique approaches to interventions, such as early detection and awareness programs among Blacks and increased genetic screening among Indians.
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Affiliation(s)
- Mpoi Makhetha
- Department of Clinical Medicine, Nelson R Mandela School of Medicine, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Namitha Chabilal
- Department of Genetics, Inkosi Albert Luthuli Central Hospital, KwaZulu-Natal, South Africa
| | - Colleen Aldous
- Department of Clinical Medicine, Nelson R Mandela School of Medicine, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
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5
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Onyia AF, Nana TA, Adewale EA, Adebesin AO, Adegboye BE, Paimo OK, De Campos OC, Bisi-Adeniyi TI, Rotimi OA, Oyelade JO, Rotimi SO. Breast Cancer Phenotypes in Africa: A Scoping Review and Meta-Analysis. JCO Glob Oncol 2023; 9:e2300135. [PMID: 38085060 PMCID: PMC10846770 DOI: 10.1200/go.23.00135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/29/2023] [Accepted: 09/13/2023] [Indexed: 12/18/2023] Open
Abstract
PURPOSE Africans have been associated with more aggressive forms of breast cancer (BC). However, there is a lack of data regarding the incidence and distribution of different subtypes on the basis of phenotypic classification. This scoping review and meta-analysis was undertaken to determine the distribution pattern of BC phenotypes (luminal, human epidermal growth factor receptor 2 [HER2]+, and triple-negative breast cancer [TNBC]) across the African region. METHODS Four online databases (PubMed, Scopus, ProQuest, and EBSCOhost) were accessed to identify studies published between 2000 and 2022 reporting the representation of receptor status (estrogen receptor, progesterone receptor, and HER2) in African patients with BC. Furthermore, the meta-analysis was carried out using a random-effects model and pooled using the inverse variance method and logit transformation. 95% CI and I2 statistics were calculated using the Clopper-Pearson method to estimate between-study heterogeneity. RESULTS A total of 2,734 records were retrieved, of which 2,133 were retained for further screening. After the screening, 63 studies were finally selected for the scoping review and meta-analysis. The pooled frequency of luminal, HER2-positive (HER2+), and TNBC was estimated at 56.30%, 12.61%, and 28.10%, respectively. Northern Africa had the highest frequency of the luminal subtype, while West Africa showed higher frequencies of HER2+ and TNBC subtypes. The review also had a representation of only 24 countries in Africa. CONCLUSION Our results highlight the disparity in the representation of molecular subtypes among the people in different regions of Africa. There is a need to incorporate routine molecular subtyping into the management of African patients with BC.
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Affiliation(s)
- Abimbola F. Onyia
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota, Nigeria
- Cancer Genomics Laboratory, Covenant University, Ota, Nigeria
| | - Toluwani A. Nana
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota, Nigeria
| | - Elijah A. Adewale
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota, Nigeria
| | | | - Bose E. Adegboye
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota, Nigeria
| | | | - Opeyemi C. De Campos
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota, Nigeria
- Cancer Genomics Laboratory, Covenant University, Ota, Nigeria
| | - Titilayo I. Bisi-Adeniyi
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota, Nigeria
- Cancer Genomics Laboratory, Covenant University, Ota, Nigeria
| | - Oluwakemi A. Rotimi
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota, Nigeria
- Cancer Genomics Laboratory, Covenant University, Ota, Nigeria
| | - Jelili O. Oyelade
- Department of Computer and Informational Science, College of Science and Technology, Covenant University, Ota, Nigeria
| | - Solomon O. Rotimi
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota, Nigeria
- Cancer Genomics Laboratory, Covenant University, Ota, Nigeria
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6
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Iwai Y, Toumbou K, Zuze T, Morgan JS, Simwinga L, Wright ST, Fedoriw Y, Oladeru OT, Balogun OD, Roberson ML, Olopade OI, Tomoka T, Elmore SN. Breast Cancer Germline Genetic Counseling and Testing for Populations of African Heritage Globally: A Scoping Review on Research, Practice, and Bioethical Considerations. JCO Glob Oncol 2023; 9:e2300154. [PMID: 37944088 PMCID: PMC10645409 DOI: 10.1200/go.23.00154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/05/2023] [Accepted: 09/05/2023] [Indexed: 11/12/2023] Open
Abstract
PURPOSE Despite the disproportionately high risk of breast cancer among women of African heritage, little is known about the facilitators and barriers to implementing germline genetic testing and counseling (GT/C). METHODS This scoping review followed guidelines recommended by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews. Published manuscripts from database inception through 2021 were sourced from PubMed, Cumulative Index to Nursing and Allied Health Literature via EBSCO, Embase, Cochrane Library, and Scopus. Search terms were used to retrieve articles addressing (1) African heritage, (2) breast cancer, and (3) GT or GC. The screening involved abstract and title review and full-text review. Data were extracted for all articles meeting the inclusion criteria. RESULTS A total of 154 studies were included. Most studies that took place were conducted in the United States (71.4%), and most first authors (76.9%) were from the United States. GT was conducted in 73 (49.7%) studies. BRCA1/BRCA2 were the most commonly studied genes for germline mutations. GC was conducted in 49 studies (33.3%), and perspectives on GC were evaluated in 43 (29.3%). The use of racial/ethnic categories varied broadly, although African American was most common (40.1%). Racism was mentioned in three studies (2.0%). CONCLUSION There is a growing body of literature on GT/C for breast cancer in women of African heritage. Future studies on GT/C of African populations should consider increased clarity around racial/ethnic categorizations, continued community engagement, and intentional processes for informed consent.
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Affiliation(s)
- Yoshiko Iwai
- University of North Carolina School of Medicine, Chapel Hill, NC
| | | | | | - Jenny S. Morgan
- Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC
- Department of Clinical Medicine, Indiana University School of Medicine, Indianapolis, IN
- Department of Global Health, Indiana University School of Medicine, Indianapolis, IN
| | | | - Sarah T. Wright
- UNC Health Sciences Library, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Yuri Fedoriw
- Department of Pathology and Laboratory Medicine, University of North Carolina School of Medicine, Chapel Hill, NC
| | - Oluwadamilola T. Oladeru
- Department of Radiation Oncology, University of Florida, Gainesville, FL
- Department of Radiation Oncology, Mayo Clinic in Florida, Jacksonville, FL
| | | | - Mya L. Roberson
- Department of Health Policy, University of North Carolina Gillings School of Global Public Health, Chapel Hill, NC
| | | | | | - Shekinah N.C. Elmore
- Department of Radiation Oncology, University of North Carolina School of Medicine, Chapel Hill, NC
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7
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Dix-Peek T, Phakathi BP, van den Berg EJ, Dickens C, Augustine TN, Cubasch H, Neugut AI, Jacobson JS, Joffe M, Ruff P, Duarte RAB. Discordance between PAM50 intrinsic subtyping and immunohistochemistry in South African women with breast cancer. Breast Cancer Res Treat 2023; 199:1-12. [PMID: 36867282 PMCID: PMC10147771 DOI: 10.1007/s10549-023-06886-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 02/03/2023] [Indexed: 03/04/2023]
Abstract
PURPOSE Breast cancer is a heterogeneous disease with different gene expression profiles, treatment options and outcomes. In South Africa, tumors are classified using immunohistochemistry. In high-income countries multiparameter genomic assays are being utilized with implications for tumor classification and treatment. METHODS In a cohort of 378 breast cancer patients from the SABCHO study, we investigated the concordance between tumor samples classified by IHC and the PAM50 gene assay. RESULTS IHC classified patients as ER-positive (77.5%), PR-positive (70.6%), and HER2-positive (32.3%). These results, together with Ki67, were used as surrogates for intrinsic subtyping, and showed 6.9% IHC-A-clinical, 72.7% IHC-B-clinical, 5.3% IHC-HER2-clinical and 15.1% triple negative cancer (TNC). Typing using the PAM50 gave 19.3% luminal-A, 32.5% luminal-B, 23.5% HER2-enriched and 24.6% basal-like. The basal-like and TNC had the highest concordance, while the luminal-A and IHC-A group had the lowest concordance. By altering the cutoff for Ki67, and realigning the HER2/ER/PR-positive patients to IHC-HER2, we improved concordance with the intrinsic subtypes. CONCLUSION We suggest that the Ki67 be changed to a cutoff of 20-25% in our population to better reflect the luminal subtype classifications. This change would inform treatment options for breast cancer patients in settings where genomic assays are unaffordable.
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Affiliation(s)
- Thérèse Dix-Peek
- Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Johannesburg, 2193, South Africa.
| | - Boitumelo P Phakathi
- Department of Surgery, School of Clinical Medicine, Faculty of Health Sciences, University of Kwa-Zulu Natal, Durban, 4001, South Africa.,Department of Surgery, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Johannesburg, 2193, South Africa
| | - Eunice J van den Berg
- Department of Histopathology, National Health Laboratory Service, Chris Hani Baragwanath Hospital, 26 Chris Hani Road, Diepkloof, Johannesburg, 1864, South Africa.,Department of Anatomical Pathology, University of the Witwatersrand, 7 York Road, Johannesburg, 2193, South Africa
| | - Caroline Dickens
- Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Johannesburg, 2193, South Africa
| | - Tanya N Augustine
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193, South Africa
| | - Herbert Cubasch
- Batho Pele Breast Unit, Chris Hani Baragwanath Academic Hospital, 26 Chris Hani Road, Diepkloof, Soweto, 1860, South Africa.,SA MRC Common Epithelial Cancer Research Centre, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa
| | - Alfred I Neugut
- Herbert Irving Comprehensive Cancer Centre, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA.,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, 10032, USA
| | - Judith S Jacobson
- Herbert Irving Comprehensive Cancer Centre, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA.,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, 10032, USA
| | - Maureen Joffe
- SA MRC Common Epithelial Cancer Research Centre, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa.,Strengthening Oncology Services Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa
| | - Paul Ruff
- Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Johannesburg, 2193, South Africa.,SA MRC Common Epithelial Cancer Research Centre, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa
| | - Raquel A B Duarte
- Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Johannesburg, 2193, South Africa
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Brawley OW, Lansey DG. Disparities in Breast Cancer Outcomes and How to Resolve Them. Hematol Oncol Clin North Am 2023; 37:1-15. [PMID: 36435603 DOI: 10.1016/j.hoc.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
There has been a 40% decline in breast cancer age-adjusted death rate since 1990. Black American women have not experienced as great a decline; indeed, the Black-White disparity in mortality in the United States is greater today than it has ever been. Certain states (areas of residence), however, do not see such dramatic differences in outcome by race. This latter finding suggests much more can be done to reduce disparities and prevent deaths. Interventions to get high-quality care (screening, diagnostics, and treatment) involve understanding the needs and concerns of the patient and addressing those needs and concerns. Patient navigators are 1 way to improve outcomes.
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Affiliation(s)
- Otis W Brawley
- Department of Oncology, Johns Hopkins School of Medicine, Baltimore, MD, USA; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
| | - Dina George Lansey
- Department of Oncology, Johns Hopkins School of Medicine, Baltimore, MD, USA
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9
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Giaquinto AN, Sung H, Miller KD, Kramer JL, Newman LA, Minihan A, Jemal A, Siegel RL. Breast Cancer Statistics, 2022. CA Cancer J Clin 2022; 72:524-541. [PMID: 36190501 DOI: 10.3322/caac.21754] [Citation(s) in RCA: 667] [Impact Index Per Article: 333.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 08/05/2022] [Indexed: 12/14/2022] Open
Abstract
This article is the American Cancer Society's update on female breast cancer statistics in the United States, including population-based data on incidence, mortality, survival, and mammography screening. Breast cancer incidence rates have risen in most of the past four decades; during the most recent data years (2010-2019), the rate increased by 0.5% annually, largely driven by localized-stage and hormone receptor-positive disease. In contrast, breast cancer mortality rates have declined steadily since their peak in 1989, albeit at a slower pace in recent years (1.3% annually from 2011 to 2020) than in the previous decade (1.9% annually from 2002 to 2011). In total, the death rate dropped by 43% during 1989-2020, translating to 460,000 fewer breast cancer deaths during that time. The death rate declined similarly for women of all racial/ethnic groups except American Indians/Alaska Natives, among whom the rates were stable. However, despite a lower incidence rate in Black versus White women (127.8 vs. 133.7 per 100,000), the racial disparity in breast cancer mortality remained unwavering, with the death rate 40% higher in Black women overall (27.6 vs. 19.7 deaths per 100,000 in 2016-2020) and two-fold higher among adult women younger than 50 years (12.1 vs. 6.5 deaths per 100,000). Black women have the lowest 5-year relative survival of any racial/ethnic group for every molecular subtype and stage of disease (except stage I), with the largest Black-White gaps in absolute terms for hormone receptor-positive/human epidermal growth factor receptor 2-negative disease (88% vs. 96%), hormone receptor-negative/human epidermal growth factor receptor 2-positive disease (78% vs. 86%), and stage III disease (64% vs. 77%). Progress against breast cancer mortality could be accelerated by mitigating racial disparities through increased access to high-quality screening and treatment via nationwide Medicaid expansion and partnerships between community stakeholders, advocacy organizations, and health systems.
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Affiliation(s)
- Angela N Giaquinto
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia, USA
| | - Hyuna Sung
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia, USA
| | - Kimberly D Miller
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia, USA
| | - Joan L Kramer
- Department of Hematology and Medical Oncology, Emory University, Atlanta, Georgia, USA
| | - Lisa A Newman
- Department of Surgery, New York-Presbyterian, Weill Cornell Medicine, New York, New York, USA
| | - Adair Minihan
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia, USA
| | - Ahmedin Jemal
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia, USA
| | - Rebecca L Siegel
- Surveillance and Health Equity Science, American Cancer Society, Atlanta, Georgia, USA
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10
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Kim G, Pastoriza JM, Qin J, Lin J, Karagiannis GS, Condeelis JS, Yothers G, Anderson S, Julian T, Entenberg D, Rohan TE, Xue X, Sparano JA, Oktay MH. Racial disparity in distant recurrence-free survival in patients with localized breast cancer: A pooled analysis of National Surgical Adjuvant Breast and Bowel Project trials. Cancer 2022; 128:2728-2735. [PMID: 35578919 DOI: 10.1002/cncr.34241] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 12/31/2022]
Abstract
BACKGROUND Black race is associated with worse outcome in patients with breast cancer. The distant relapse-free survival (DRFS) between Black and White women with localized breast cancer who participated in National Cancer Institute-sponsored clinical trial was evaluated. METHODS Pooled data were analyzed from 8 National Surgical Adjuvant Breast and Bowel Project (NSABP) trials including 9702 women with localized breast cancer treated with adjuvant chemotherapy (AC, n = 7485) or neoadjuvant chemotherapy (NAC, n = 2217), who self-reported as Black (n = 1070) or White (n = 8632) race. The association between race and DRFS was analyzed using log-rank tests and multivariate Cox regression. RESULTS After adjustment for covariates including age, tumor size, nodal status, body mass index and taxane use, and treatment (AC vs NAC), Black race was associated with an inferior DRFS in estrogen receptor-positive (ER+; hazard ratio [HR], 1.24; 95% CI, 1.05-1.46; P = .01), but not in ER- disease (HR, 0.97; 95% CI, 0.83-1.14; P = .73), and significant interaction between race and ER status was observed (P = .03). There was no racial disparity in DRFS among patients with pathologic complete response (pCR) (log-rank P = .8). For patients without pCR, Black race was associated with worse DRFS in ER+ (HR, 1.67; 95% CI, 1.14-2.45; P = .01), but not in ER- disease (HR, 0.91; 95% CI, 0.65-1.28; P = .59). CONCLUSIONS Black race was associated with significantly inferior DRFS in ER+ localized breast cancer treated with AC or NAC, but not in ER- disease. In the NAC group, racial disparity was also observed in patients with residual ER+ breast cancer at surgery, but not in those who had pCR. LAY SUMMARY Black women with breast cancer have worse outcomes compared with White women. We investigated if this held true in the context of clinical trials that provide controlled treatment setting. Black women with cancer expressing estrogen receptors (ERs) had worse outcome than White women. If breast cancers did not express ERs, there was no racial disparity in outcome. We also observed racial disparity in women who received chemotherapy before their cancer was removed, but only if they had cancer expressing ERs and residual disease on completion of treatment. If the cancer disappeared with presurgical chemotherapy, there was no racial disparity.
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Affiliation(s)
- Gina Kim
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
- Department of Surgery, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
| | - Jessica M Pastoriza
- Department of Surgery, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
| | - Jiyue Qin
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
| | - Juan Lin
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
| | - George S Karagiannis
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
- Gruss-Lipper Biophotonics Center, Albert Einstein College of Medicine/Montefiore Medical center, Bronx, New York
- Integrated Imaging Program, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
| | - John S Condeelis
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
- Gruss-Lipper Biophotonics Center, Albert Einstein College of Medicine/Montefiore Medical center, Bronx, New York
- Integrated Imaging Program, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
| | - Greg Yothers
- Department of Biostatistics, Graduate School of Public, Health at University of Pittsburgh, Pittsburgh, Pennsylvania
- NRG Oncology, Philadelphia, Pennsylvania
| | - Stewart Anderson
- Department of Biostatistics, Graduate School of Public, Health at University of Pittsburgh, Pittsburgh, Pennsylvania
- NRG Oncology, Philadelphia, Pennsylvania
| | - Thomas Julian
- NRG Oncology, Philadelphia, Pennsylvania
- Department of Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania
| | - David Entenberg
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
- Gruss-Lipper Biophotonics Center, Albert Einstein College of Medicine/Montefiore Medical center, Bronx, New York
- Integrated Imaging Program, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
| | - Thomas E Rohan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
| | - Xiaonan Xue
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
| | - Joseph A Sparano
- Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, Tisch Cancer Institute, New York, New York
| | - Maja H Oktay
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
- Gruss-Lipper Biophotonics Center, Albert Einstein College of Medicine/Montefiore Medical center, Bronx, New York
- Integrated Imaging Program, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
- Department of Pathology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York
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12
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Kruse-Diehr AJ, Lewis-Thames MW, Wiedenman E, James A, Chambers L. Perspectives of cancer prevention and control resources from stakeholders in rural southern Illinois. J Rural Health 2022; 38:398-408. [PMID: 34143906 PMCID: PMC8683572 DOI: 10.1111/jrh.12606] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
PURPOSE Rural residents have a higher cancer burden than urban residents, which is likely related to multiple socioecological factors. This study sought to investigate the perspectives of a diverse set of rural stakeholders regarding access to cancer prevention and control resources in rural southern Illinois. METHODS Stakeholders were recruited from counties in southern Illinois and included residents (cancer survivors or caregivers), leaders of community-based organizations with health-related missions, and health care providers. Individual interviews and focus groups assessed recommended cancer prevention, control, and treatment resources; helpfulness of regional resources; and needed resources. The research team used an iterative approach to thematic analysis wherein codes were derived inductively and refined repeatedly to reveal overarching themes. FINDINGS Forty-four stakeholders reported challenges to health care access (eg, travel distance, financial burdens, and poor quality of care) and limited access to supportive care services (lack of caregiver support and "spotty" area resources). To mitigate these barriers, local residents used a combination of individual (self-reliance and adaptive measures) and organizational (patient navigation and financial services) approaches. Finally, stakeholders reported multiple forms of cancer control and prevention communication, including formal discussions with health care providers and various types of informal social support (eg, friends and family). CONCLUSIONS Stakeholders experienced barriers to cancer prevention and control often mitigated by a reliance on personal adaptations, nonclinical organizational supports, and informal support systems. While resources remain minimal in southern Illinois, researchers and practitioners must make efforts to leverage existing community organizations and social networks to improve cancer outcomes in this region.
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Affiliation(s)
- Aaron J. Kruse-Diehr
- Department of Health, Behavior & Society, University of Kentucky College of Public Health, Lexington, Kentucky, USA
| | - Marquita W. Lewis-Thames
- Department of Medical Social Science, Center for Community Health, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Eric Wiedenman
- Implementation Science Center for Cancer Control and Prevention Research Center, Brown School, Washington University in St. Louis, St. Louis, Missouri, USA,Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Aimee James
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Lynne Chambers
- College of Humanities and Social Sciences, Southeastern Missouri State University, Cape Girardeau, Missouri, USA
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Mushonga M, Nyakabau AM, Ndlovu N, Iyer HS, Bellon JR, Kanda C, Ndarukwa-Jambwa S, Chipidza F, Makunike-Mutasa R, Muchuweti D, Muguti EG, Cluff Elmore SN. Patterns of Palliative Radiotherapy Utilization for Patients With Metastatic Breast Cancer in Harare, Zimbabwe. JCO Glob Oncol 2021; 7:1212-1219. [PMID: 34343013 PMCID: PMC8457791 DOI: 10.1200/go.20.00656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE In sub-Saharan Africa, radiotherapy (RT) utilization and delivery patterns have not been extensively studied in patients with metastatic breast cancer. METHODS A retrospective cohort study of female patients with metastatic breast cancer seen at Parirenyatwa Radiotherapy Centre in Zimbabwe from 2014 to 2018 was conducted. Demographics, pathology, staging, and treatment data were abstracted through chart review. Fisher's exact test and chi-squared test of independence were used to compare proportions, and independent two-sample t-tests were used to compare means. RESULTS Of 351 patients with breast cancer, 152 (43%) had metastatic disease, median age 51 years (interquartile range: 43-61 years). Of those with metastatic disease, 30 patients (20%) received radiation to various metastatic sites: 16 spine; three nonspine bone metastases; six whole brain; and five chest wall or supraclavicular. Patients who received radiation were younger (46 v 52 years; P = .019), but did not differ significantly by performance status than those who did not. The most common dose prescription was 30 Gy in 10 fractions (33%). Five (17%) patients had treatment interruption and two (7%) had treatment noncompletion. Province of origin and clinical tumor stage were significant predictors of RT receipt (P = .002; and P = .018, respectively). CONCLUSION A minority of patients with metastatic breast cancer received RT (20%), and these were likely to be younger, with advanced tumor stage, and resided in provinces where RT is available. Conventional courses were generally prescribed. There is a need to strongly consider palliative RT as an option for patients with metastatic breast cancer and use of hypofractionated courses (e.g. 8 Gy in one fraction) may support this goal.
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Affiliation(s)
| | - Anna Mary Nyakabau
- Parirenyatwa Hospital Radiotherapy Centre, Harare, Zimbabwe.,Department of Oncology, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe.,Cancerserve Trust, Harare, Zimbabwe
| | - Ntokozo Ndlovu
- Parirenyatwa Hospital Radiotherapy Centre, Harare, Zimbabwe.,Department of Oncology, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Hari Subramaniam Iyer
- Harvard T.H. Chan School of Public Health, Boston, MA.,Dana-Farber Cancer Institute, Boston, MA
| | | | - Caroline Kanda
- Parirenyatwa Hospital Radiotherapy Centre, Harare, Zimbabwe
| | - Sandra Ndarukwa-Jambwa
- Sally Mugabe Central Hospital, Harare, Zimbabwe.,Department of Oncology, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Fallon Chipidza
- Dana-Farber Cancer Institute, Boston, MA.,Harvard Radiation Oncology Program, Boston, MA
| | - Rudo Makunike-Mutasa
- Department of Pathology, University of Zimbabwe, Faculty of Medicine and Health Sciences, Harare, Zimbabwe
| | - David Muchuweti
- Department of Surgery, University of Zimbabwe, Faculty of Medicine and Health Sciences, Harare, Zimbabwe
| | - Edwin G Muguti
- Department of Surgery, University of Zimbabwe, Faculty of Medicine and Health Sciences, Harare, Zimbabwe
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Samaroo K, Hosein A, Olivier LK, Ali J. Breast Cancer in the Caribbean. Cureus 2021; 13:e17042. [PMID: 34522520 PMCID: PMC8428164 DOI: 10.7759/cureus.17042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2021] [Indexed: 11/22/2022] Open
Abstract
Breast cancer (BC) is one of the leading causes of death among women globally. In the Caribbean, there is a higher mortality rate compared with North American and European countries which have higher incidence rates. We conducted a literature review to examine the BC dynamic in the Caribbean and determine the areas where further investigations are needed. The PubMed database was used for identifying relevant studies using a combination of specific keyword searches. All studies focusing on BC within the defined Caribbean population were selected for this review. A total of 117 papers were included. The data were organized and presented under the following headings and reported according to the country where available: BC incidence and mortality, patient demographics, clinicopathology, genetics, behavioral risks, diagnosis and treatment, and BC control. Our review uncovered major variability in the incidence, management, etiology, and mortality of BC among Caribbean countries. Low-resource countries are burdened by more advanced disease with expected poorer BC outcomes (i.e., shorter periods of disease-free survival). Countries with established national cancer registries seem to have a better approach to the management of BC. The introduction of cancer treatment programs in association with international nonprofit groups has shown tremendous improvement in quality, accessible cancer care for patients, particularly in low- and middle-income settings. BC research is relatively limited in the Caribbean, lacking in both scope and consistency. The unique Caribbean BC population of diverse ethnicities, environmental influence, immigrants, socioeconomic status, and sociocultural practices allows an optimal opportunity for epidemiological investigations that can provide deeper insights into the status of BC.
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Affiliation(s)
- Kristy Samaroo
- Biomedical Engineering, The University of Trinidad & Tobago, Port of Spain, TTO
| | - Amalia Hosein
- Biomedical Engineering, The University of Trinidad & Tobago, Port of Spain, TTO
| | - Lyronne K Olivier
- General Surgeon/Breast Surgical Oncologist, Sangre Grande General Hospital, Port of Spain, TTO
| | - Jameel Ali
- Surgery, University of Toronto, Toronto, CAN
- Breast Unit, St. James Medical Complex, Port of Spain, TTO
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15
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Elmore SNC, Mushonga M, Iyer HS, Kanda C, Chibonda S, Chipidza F, Makunike Mutasa R, Muchuweti D, Muguti EG, Maunganidze A, Ndlovu N, Bellon JR, Nyakabau AM. Breast cancer in Zimbabwe: patterns of care and correlates of adherence in a national referral hospital radiotherapy center cohort from 2014 to 2018. Cancer Med 2021; 10:3489-3498. [PMID: 33973399 PMCID: PMC8178482 DOI: 10.1002/cam4.3764] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/24/2020] [Accepted: 12/26/2020] [Indexed: 12/24/2022] Open
Abstract
Background Breast cancer is the second most common cancer among women in Zimbabwe. Patients face socioeconomic barriers to accessing oncology care, including radiotherapy. We sought to understand patterns of care and adherence for women with breast cancer in sub‐Saharan Africa (SSA) with radiotherapy access. Methods A retrospective cohort was created for women with breast cancer evaluated at the Parirenyatwa Hospital Radiotherapy and Oncology Center (RTC) from 2014 to 2018. Clinical data were collected to define patterns of care. Non‐adherence was modeled as a binary outcome with different criteria for patients with localized versus metastatic disease. Results In total, 351 women presented with breast cancer with median age 51 at diagnosis (IQR: 43–61). Receptor status was missing for 71% (248). 199 (57%) had non‐metastatic disease, and 152 (43%) had metastases. Of women with localized disease, 34% received post‐mastectomy radiation. Of women with metastatic disease, 9.7% received radiotherapy. Metastatic disease and missing HIV status were associated with increased odds of study‐defined non‐adherence (aOR: 1.85, 95% CI: 1.05, 3.28; aOR: 2.13, 95% CI: 1.11, 4.05), while availability of ER/PR status was associated with lower odds of non‐adherence (aOR: 0.18, 95% CI: 0.09, 0.36). Conclusions Radiotherapy is likely underutilized for women with breast cancer, even in a setting with public sector availability. Exploring patient‐level factors that influence adherence to care may provide clinicians with better tools to support adherence and improve survival. Greater investment is needed in multidisciplinary, multimodality care for breast cancer in SSA.
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Affiliation(s)
- Shekinah Nefreteri Cluff Elmore
- Harvard Radiation Oncology Program, Boston, USA.,Harvard Medical School, Boston, USA.,Department of Radiation Oncology, University of North Carolina, Chapel Hill, USA
| | - Melinda Mushonga
- Parirenyatwa Hospital Radiotherapy and Oncology Center, Harare, Zimbabwe
| | | | - Caroline Kanda
- Parirenyatwa Hospital Radiotherapy and Oncology Center, Harare, Zimbabwe
| | - Shirley Chibonda
- Parirenyatwa Hospital Radiotherapy and Oncology Center, Harare, Zimbabwe
| | - Fallon Chipidza
- Harvard Radiation Oncology Program, Boston, USA.,Harvard Medical School, Boston, USA.,Department of Radiation Oncology, Dana-Faber Cancer Institute/Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Rudo Makunike Mutasa
- Department of Pathology, University of Zimbabwe, College of Health Sciences, Harare, Zimbabwe
| | - David Muchuweti
- Department of Surgery, University of Zimbabwe, College of Health Sciences, Harare, Zimbabwe
| | - Edwin G Muguti
- Department of Surgery, University of Zimbabwe, College of Health Sciences, Harare, Zimbabwe
| | - Aspect Maunganidze
- Department of Surgery, University of Zimbabwe, College of Health Sciences, Harare, Zimbabwe
| | - Ntokozo Ndlovu
- Parirenyatwa Hospital Radiotherapy and Oncology Center, Harare, Zimbabwe.,Department of Oncology, University of Zimbabwe, College of Health Sciences, Harare, Zimbabwe
| | - Jennifer Ruth Bellon
- Department of Radiation Oncology, Dana-Faber Cancer Institute/Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Anna Mary Nyakabau
- Parirenyatwa Hospital Radiotherapy and Oncology Center, Harare, Zimbabwe.,Department of Pathology, University of Zimbabwe, College of Health Sciences, Harare, Zimbabwe.,Cancerserve Trust, Harare, Zimbabwe
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16
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Saleh M, Chandrashekar DS, Shahin S, Agarwal S, Kim HG, Behring M, Shaikh AJ, Moloo Z, Eltoum IEA, Yates C, Varambally S, Manne U. Comparative analysis of triple-negative breast cancer transcriptomics of Kenyan, African American and Caucasian Women. Transl Oncol 2021; 14:101086. [PMID: 33839593 PMCID: PMC8058567 DOI: 10.1016/j.tranon.2021.101086] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 03/04/2021] [Accepted: 03/23/2021] [Indexed: 12/17/2022] Open
Abstract
The current study determined the molecular fingerprints of TNBCs of women from kenya (KE) and compared them with those of African–American (AA) and Caucasian (CA) women. RNA sequencing analysis highlights the role of molecular alterations in TNBCs and the potential benefit of targeting pathways in this disease for the KE population as compared to AAs and CAs. The dysregulated genes and signaling pathways could contributes to the aggressive phenotypes of TNBCs of KE women.
Purpose : Triple-negative breast cancer (TNBC) patients of various ethnic groups often have discrete clinical presentations and outcomes. Women of African descent have a disproportionately higher chance of developing TNBCs. The aim of the current study was to establish the transcriptome of TNBCs from Kenyan (KE) women of Bantu origin and compare it to those TNBCs of African-Americans (AA) and Caucasians (CA) for identifying KE TNBC-specific molecular determinants of cancer progression and potential biomarkers of clinical outcomes. Patients and Methods : Pathology-confirmed TNBC tissues from Kenyan women of Bantu origin (n = 15) and age and stage range matched AA (n = 19) and CA (n = 23) TNBCs of patients from Alabama were included in this study. RNA was isolated from paraffin-embedded tissues, and expression was analyzed by RNA sequencing. Results : At clinical presentation, young KE TNBC patients have tumors of higher stages. Differential expression analysis identified 160 up-regulated and 178 down-regulated genes in KE TNBCs compared to AA and CA TNBCs. Validation analyses of the TCGA breast cancer data identified 45 KE TNBC-specific genes that are involved in the apoptosis (ACTC1, ERCC6 and CD14), cell proliferation (UHRF2, KDM4C, UHMK1, KCNH5, KRT18, CSF1R and S100A13), and Wnt signaling (BCL9L) pathways. Conclusions : In this study, we identified biomarkers that are specific for KE TNBC patients of Bantu origin. Further study with a larger sample size of matched tumors could confirm our findings. If biologically confirmed, these molecular determinants could have clinical and biological implications and serve as targets for development of personalized therapeutics for KE TNBC patients.
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Affiliation(s)
- Mansoor Saleh
- Department of Medicine, University of Alabama at Birmingham, Birmingham 35233, AL, United States; Department of Hematology-Oncology, the Aga Khan University, Nairobi, Kenya; O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham 35233, AL, United States
| | | | - Sayed Shahin
- Department of Pathology, the Aga Khan University, Nairobi, Kenya
| | - Sumit Agarwal
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Hyung-Gyoon Kim
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Michael Behring
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, United States
| | | | - Zahir Moloo
- Department of Pathology, the Aga Khan University, Nairobi, Kenya
| | - Isam-Eldin A Eltoum
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Clayton Yates
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, United States; Department of Biology & Center for Cancer Research, Tuskegee University, Tuskegee, AL, United States
| | - Sooryanarayana Varambally
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham 35233, AL, United States; Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Upender Manne
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham 35233, AL, United States; Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, United States.
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Abstract
ABSTRACT Triple-negative breast cancer accounted for 12% of breast cancers diagnosed in the United States from 2012 to 2016, with a 5-year survival 8% to 16% lower than hormone receptor-positive disease. However, preventive and screening strategies remain tailored to the demographics of less lethal luminal cancers. This review examines the ethnic, genetic, and modifiable risk factors associated with triple-negative breast cancer, which providers must recognize to address the societal disparities of this deadly disease. Most notable is that triple-negative cancers disproportionately affect African American women and carriers of germline BRCA and PALB2 mutations. Even controlling for treatment delays, stage, and socioeconomic factors, African Americans with triple-negative breast cancer remain nearly twice as likely to die of their disease. To level the playing field, we must integrate genomic predictors of disease and epidemiologic characteristics of molecular breast cancer subtypes to provide personalized risk assessment, screening, and treatment for each patient.
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18
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Prevalence of Histological Characteristics of Breast Cancer in Rwanda in Relation to Age and Tumor Stages. Discov Oncol 2020; 11:240-249. [PMID: 32772262 DOI: 10.1007/s12672-020-00393-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/14/2020] [Indexed: 10/23/2022] Open
Abstract
Breast cancer is a complex disease, and it is the most common cause of morbidity and mortality among women worldwide. In Sub-Saharan Africa, the clinical characteristics and tumor profiles of breast cancer are still unknown. In the present study we aimed to determine breast tumor profiles of the Rwandan patients in relation to age and tumor stages. We compare our findings to related results from other sub-Saharan Africa studies. Data on age at diagnosis, tumor stage, and hormonal profiles of 138 patients diagnosed between January 2015 and December 2018 were retrospectively retrieved from electronic medical records at three referral hospitals in Rwanda. We compared our results to related findings reported in other Sub-Saharan African countries. All statistical analyses were done using SPSS Inc., Chicago, IL, USA, version 20 and R software languages. The mean age at diagnosis was 49.7 years (SD = 13) and ranged from 17 to 86 years. The majority of patients (57.2%) were diagnosed before 50 years of age compared with 42.8% aged > 50 years. Tumor stage III was the commonest accounting for 62% followed by stage II with 24.8%. The distribution of breast tumor subtypes was ER-, PR-, HER2-: 37.7%; ER+, PR+, HER2-: 31.2%; ER-, PR-, HER2+: 14.5%; ER+, PR+, HER2+: 5.1%; and other subtypes represented 11.6%. There was no statistically significant difference in age and tumor stages between the molecular subtypes. Our findings revealed the predominance of hormonal negative tumors among Rwandan patients with breast cancer. Triple negative was found to be the most common breast tumor subtype regardless of age and tumor stage. Larger prospective studies could examine genetics and environmental factors that may play a role in the differences of tumor characteristics in Sub-Saharan populations.
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Bissell MCS, Kerlikowske K, Sprague BL, Tice JA, Gard CC, Tossas KY, Rauscher GH, Trentham-Dietz A, Henderson LM, Onega T, Keegan THM, Miglioretti DL. Breast Cancer Population Attributable Risk Proportions Associated with Body Mass Index and Breast Density by Race/Ethnicity and Menopausal Status. Cancer Epidemiol Biomarkers Prev 2020; 29:2048-2056. [PMID: 32727722 DOI: 10.1158/1055-9965.epi-20-0358] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/01/2020] [Accepted: 07/22/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Overweight/obesity and dense breasts are strong breast cancer risk factors whose prevalences vary by race/ethnicity. The breast cancer population attributable risk proportions (PARP) explained by these factors across racial/ethnic groups are unknown. METHODS We analyzed data collected from 3,786,802 mammography examinations (1,071,653 women) in the Breast Cancer Surveillance Consortium, associated with 21,253 invasive breast cancers during a median of 5.2 years follow-up. HRs for body mass index (BMI) and breast density, adjusted for age and registry were estimated using separate Cox regression models by race/ethnicity (White, Black, Hispanic, Asian) and menopausal status. HRs were combined with observed risk-factor proportions to calculate PARPs for shifting overweight/obese to normal BMI and shifting heterogeneously/extremely dense to scattered fibroglandular densities. RESULTS The prevalences and HRs for overweight/obesity and heterogeneously/extremely dense breasts varied across races/ethnicities and menopausal status. BMI PARPs were larger for postmenopausal versus premenopausal women (12.0%-28.3% vs. 1.0%-9.9%) and nearly double among postmenopausal Black women (28.3%) than other races/ethnicities (12.0%-15.4%). Breast density PARPs were larger for premenopausal versus postmenopausal women (23.9%-35.0% vs. 13.0%-16.7%) and lower among premenopausal Black women (23.9%) than other races/ethnicities (30.4%-35.0%). Postmenopausal density PARPs were similar across races/ethnicities (13.0%-16.7%). CONCLUSIONS Overweight/obesity and dense breasts account for large proportions of breast cancers in White, Black, Hispanic, and Asian women despite large differences in risk-factor distributions. IMPACT Risk prediction models should consider how race/ethnicity interacts with BMI and breast density. Efforts to reduce BMI could have a large impact on breast cancer risk reduction, particularly among postmenopausal Black women.
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Affiliation(s)
- Michael C S Bissell
- Division of Biostatistics, Department of Public Health Sciences, University of California Davis School of Medicine, Davis, California.
| | - Karla Kerlikowske
- General Internal Medicine Section, Department of Veteran Affairs and Departments of Medicine and Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | - Brian L Sprague
- Department of Surgery, Office of Health Promotion Research, Larner College of Medicine at the University of Vermont and University of Vermont Cancer Center, Burlington, Vermont
| | - Jeffery A Tice
- Division of General Internal Medicine, Department of Medicine, University of California, San Francisco, San Francisco, California
| | - Charlotte C Gard
- Department of Economics, Applied Statistics, and International Business, New Mexico State University, Las Cruces, New Mexico
| | - Katherine Y Tossas
- Department of Health Behavior and Policy, School of Medicine, Virginia Commonwealth University, Richmond, Virginia
| | - Garth H Rauscher
- Division of Epidemiology and Biostatistics, University of Illinois at Chicago, Chicago, Illinois
| | - Amy Trentham-Dietz
- Department of Population Health Sciences and Carbone Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin
| | - Louise M Henderson
- Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Tracy Onega
- Department of Biomedical Data Science, Dartmouth College, Lebanon, New Hampshire
| | - Theresa H M Keegan
- Center for Oncology Hematology Outcomes Research and Training (COHORT) and Division of Hematology and Oncology, University of California Davis School of Medicine, Sacramento, California
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The use of survivorship care plans by female racial and ethnic minority breast cancer survivors: a systematic review. J Cancer Surviv 2020; 14:806-825. [PMID: 32514908 DOI: 10.1007/s11764-020-00894-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 05/07/2020] [Indexed: 12/30/2022]
Abstract
PURPOSE Racial/ethnic breast cancer survivorship disparities persist as minority breast cancer survivors (MBCSs) report fragmentation in survivorship care, namely in the access and delivery of survivorship care plans (SCPs). To better understand care coordination of MCBS, this review elucidated concerns of female MBCS about their preparation for post-treatment survivorship care, the preferred practices for the delivery of a SCP, and the associated content to improve post-treatment survivorship care understanding. METHODS A systematic search of articles from PubMed, Ovid-Medline, CINAHL databases, and bibliographic reviews included manuscripts using keywords for racial/ethnic minority groups and breast cancer survivorship care coordination terms. Salient themes and article quality were analyzed from the extracted data. RESULTS Fourteen included studies represented 5,854 participants and over 12 racial/ethnic groups. The following themes of post-treatment MBCS were identified from the review: (1) uncertainty about post-treatment survivorship care management is a consequence of sub-optimal patient-provider communication; (2) access to SCPs and related materials are desired, but sporadic; and (3) advancements to the delivery and presentation of SCPs and related materials are desired. CONCLUSIONS Representation of only 14 studies indicates that the MBCSs' perspective post-treatment survivorship care is underrepresented in the literature. Themes from this review support access to, and implementation of, culturally tailored SCP for MBCS. There was multi-ethnic acceptance of SCPs as a tool to help improve care coordination. IMPLICATIONS FOR CANCER SURVIVORS These findings highlight the importance of general education about post-treatment survivorship, post-treatment survivorship needs identification, and the elucidation of gaps in effective SCP delivery among MBCS.
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Hercules SM, Hercules JC, Ansari A, Date SAJ, Skeete DHA, Smith Connell SP, Pond GR, Daniel JM. High triple-negative breast cancer prevalence and aggressive prognostic factors in Barbadian women with breast cancer. Cancer 2020; 126:2217-2224. [PMID: 32154924 DOI: 10.1002/cncr.32771] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 01/17/2020] [Accepted: 01/22/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Women of African ancestry (WAA) are disproportionately affected by triple-negative breast cancer (TNBC), which remains one of the most clinically challenging breast cancer (BCa) subtypes. This study investigated the prevalence of TNBC and epidemiological trends for BCa in Barbados, a Caribbean island with a high percentage of African ancestry. METHODS Pathology reports for all BCa cases between 2007 and 2016 were collected from the sole hospital in Barbados and reviewed. The clinicopathological data collected included age, tumor grade, lymph node status, and hormone receptor status as determined by immunohistochemistry. BCa data for non-Hispanic white (NHW) and non-Hispanic black (NHB) American populations were accessed from the Surveillance, Epidemiology, and End Results database. RESULTS There were 1997 BCa cases in Barbados between 2007 and 2016 for an estimated incidence rate of 135.1 per 100,000 women in Barbados (standardized to the US population, where the standardized incidence rates for NHBs and NHWs were 141.4 and 152.6 per 100,000, respectively). Age-specific incidence rates in Barbados for this period were consistently higher in younger age groups (15-59 years) in comparison with NHWs and NHBs. Between 2010 and 2016 in Barbados, a TNBC prevalence of 25% was observed, whereas TNBC prevalences of 21% and 10% were observed in NHBs and NHWs, respectively. CONCLUSIONS The BCa incidence was higher in younger Barbadian women than NHWs and NHBs, and the TNBC prevalence was ~2.5 times higher than the prevalence in NHWs. This hints at a possible genetic predisposition and other socioeconomic factors that could explain the high TNBC prevalence and aggressive clinical course in WAA globally.
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Affiliation(s)
- Shawn M Hercules
- Department of Biology, McMaster University, Hamilton, Ontario, Canada.,African Caribbean Cancer Consortium, Philadelphia, Pennsylvania
| | - Jevon C Hercules
- Department of Mathematics, University of the West Indies at Mona, Kingston, Jamaica
| | - Amna Ansari
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - Stephanie A J Date
- African Caribbean Cancer Consortium, Philadelphia, Pennsylvania.,Faculty of Medical Sciences, University of the West Indies at Cave Hill, Bridgetown, Barbados
| | - Desiree H A Skeete
- African Caribbean Cancer Consortium, Philadelphia, Pennsylvania.,Faculty of Medical Sciences, University of the West Indies at Cave Hill, Bridgetown, Barbados.,Department of Pathology, Queen Elizabeth Hospital, Bridgetown, Barbados
| | - Suzanne P Smith Connell
- Faculty of Medical Sciences, University of the West Indies at Cave Hill, Bridgetown, Barbados.,Department of Radiation Oncology, Queen Elizabeth Hospital, Bridgetown, Barbados
| | - Gregory R Pond
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Department of Oncology, McMaster University, Hamilton, Ontario, Canada
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, Ontario, Canada.,African Caribbean Cancer Consortium, Philadelphia, Pennsylvania
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DeSantis CE, Ma J, Gaudet MM, Newman LA, Miller KD, Goding Sauer A, Jemal A, Siegel RL. Breast cancer statistics, 2019. CA Cancer J Clin 2019; 69:438-451. [PMID: 31577379 DOI: 10.3322/caac.21583] [Citation(s) in RCA: 1803] [Impact Index Per Article: 360.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 08/14/2019] [Indexed: 12/16/2022] Open
Abstract
This article is the American Cancer Society's biennial update on female breast cancer statistics in the United States, including data on incidence, mortality, survival, and screening. Over the most recent 5-year period (2012-2016), the breast cancer incidence rate increased slightly by 0.3% per year, largely because of rising rates of local stage and hormone receptor-positive disease. In contrast, the breast cancer death rate continues to decline, dropping 40% from 1989 to 2017 and translating to 375,900 breast cancer deaths averted. Notably, the pace of the decline has slowed from an annual decrease of 1.9% during 1998 through 2011 to 1.3% during 2011 through 2017, largely driven by the trend in white women. Consequently, the black-white disparity in breast cancer mortality has remained stable since 2011 after widening over the past 3 decades. Nevertheless, the death rate remains 40% higher in blacks (28.4 vs 20.3 deaths per 100,000) despite a lower incidence rate (126.7 vs 130.8); this disparity is magnified among black women aged <50 years, who have a death rate double that of whites. In the most recent 5-year period (2013-2017), the death rate declined in Hispanics (2.1% per year), blacks (1.5%), whites (1.0%), and Asians/Pacific Islanders (0.8%) but was stable in American Indians/Alaska Natives. However, by state, breast cancer mortality rates are no longer declining in Nebraska overall; in Colorado and Wisconsin in black women; and in Nebraska, Texas, and Virginia in white women. Breast cancer was the leading cause of cancer death in women (surpassing lung cancer) in four Southern and two Midwestern states among blacks and in Utah among whites during 2016-2017. Declines in breast cancer mortality could be accelerated by expanding access to high-quality prevention, early detection, and treatment services to all women.
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Affiliation(s)
- Carol E DeSantis
- Surveillance and Health Services Research, American Cancer Society, Atlanta, Georgia
| | - Jiemin Ma
- Surveillance and Health Services Research, American Cancer Society, Atlanta, Georgia
| | - Mia M Gaudet
- Behavioral and Epidemiology Research, American Cancer Society, Atlanta, Georgia
| | - Lisa A Newman
- Department of Surgery, Weill Cornell Medical Center, New York, New York
| | - Kimberly D Miller
- Surveillance and Health Services Research, American Cancer Society, Atlanta, Georgia
| | - Ann Goding Sauer
- Surveillance and Health Services Research, American Cancer Society, Atlanta, Georgia
| | - Ahmedin Jemal
- Surveillance and Health Services Research, American Cancer Society, Atlanta, Georgia
| | - Rebecca L Siegel
- Surveillance and Health Services Research, American Cancer Society, Atlanta, Georgia
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Schlumbrecht M, Ragin C, Kohn-Wood L, George S. Pressing Need to Dig Deeper Into Female Cancer Health Disparities. J Clin Oncol 2019; 37:3464-3465. [PMID: 31577471 DOI: 10.1200/jco.19.01720] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Matthew Schlumbrecht
- Matthew Schlumbrecht, MD, MPH, Sylvester Comprehensive Cancer Center, Miami, FL; Camille Ragin, PhD, Fox Chase Cancer Center, Philadelphia, PA; Laura Kohn-Wood, PhD, University of Miami, Coral Gables, FL; and Sophia George, PhD, Sylvester Comprehensive Cancer Center, Miami, FL
| | - Camille Ragin
- Matthew Schlumbrecht, MD, MPH, Sylvester Comprehensive Cancer Center, Miami, FL; Camille Ragin, PhD, Fox Chase Cancer Center, Philadelphia, PA; Laura Kohn-Wood, PhD, University of Miami, Coral Gables, FL; and Sophia George, PhD, Sylvester Comprehensive Cancer Center, Miami, FL
| | - Laura Kohn-Wood
- Matthew Schlumbrecht, MD, MPH, Sylvester Comprehensive Cancer Center, Miami, FL; Camille Ragin, PhD, Fox Chase Cancer Center, Philadelphia, PA; Laura Kohn-Wood, PhD, University of Miami, Coral Gables, FL; and Sophia George, PhD, Sylvester Comprehensive Cancer Center, Miami, FL
| | - Sophia George
- Matthew Schlumbrecht, MD, MPH, Sylvester Comprehensive Cancer Center, Miami, FL; Camille Ragin, PhD, Fox Chase Cancer Center, Philadelphia, PA; Laura Kohn-Wood, PhD, University of Miami, Coral Gables, FL; and Sophia George, PhD, Sylvester Comprehensive Cancer Center, Miami, FL
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