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Pritchard JE, Pearce JE, Snoeren IAM, Fuchs SNR, Götz K, Peisker F, Wagner S, Benabid A, Lutterbach N, Klöker V, Nagai JS, Hannani MT, Galyga AK, Sistemich E, Banjanin B, Flosdorf N, Bindels E, Olschok K, Biaesch K, Chatain N, Bhagwat N, Dunbar A, Sarkis R, Naveiras O, Berres ML, Koschmieder S, Levine RL, Costa IG, Gleitz HFE, Kramann R, Schneider RK. Non-canonical Hedgehog signaling mediates profibrotic hematopoiesis-stroma crosstalk in myeloproliferative neoplasms. Cell Rep 2024; 43:113608. [PMID: 38117649 PMCID: PMC10828549 DOI: 10.1016/j.celrep.2023.113608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 09/28/2023] [Accepted: 12/06/2023] [Indexed: 12/22/2023] Open
Abstract
The role of hematopoietic Hedgehog signaling in myeloproliferative neoplasms (MPNs) remains incompletely understood despite data suggesting that Hedgehog (Hh) pathway inhibitors have therapeutic activity in patients. We aim to systematically interrogate the role of canonical vs. non-canonical Hh signaling in MPNs. We show that Gli1 protein levels in patient peripheral blood mononuclear cells (PBMCs) mark fibrotic progression and that, in murine MPN models, absence of hematopoietic Gli1, but not Gli2 or Smo, significantly reduces MPN phenotype and fibrosis, indicating that GLI1 in the MPN clone can be activated in a non-canonical fashion. Additionally, we establish that hematopoietic Gli1 has a significant effect on stromal cells, mediated through a druggable MIF-CD74 axis. These data highlight the complex interplay between alterations in the MPN clone and activation of stromal cells and indicate that Gli1 represents a promising therapeutic target in MPNs, particularly that Hh signaling is dispensable for normal hematopoiesis.
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Affiliation(s)
- Jessica E Pritchard
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany; Department of Developmental Biology, Erasmus University Medical Center, Rotterdam, the Netherlands; Oncode Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Juliette E Pearce
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany
| | - Inge A M Snoeren
- Department of Developmental Biology, Erasmus University Medical Center, Rotterdam, the Netherlands; Oncode Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Stijn N R Fuchs
- Department of Developmental Biology, Erasmus University Medical Center, Rotterdam, the Netherlands; Oncode Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Katrin Götz
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany
| | - Fabian Peisker
- Institute of Experimental Medicine and Systems Biology, RWTH Aachen University Hospital, Aachen, Germany
| | - Silke Wagner
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany
| | - Adam Benabid
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany
| | - Niklas Lutterbach
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany
| | - Vanessa Klöker
- Institute for Computational Genomics, RWTH Aachen University Hospital, Aachen, Germany
| | - James S Nagai
- Institute for Computational Genomics, RWTH Aachen University Hospital, Aachen, Germany
| | - Monica T Hannani
- Institute of Experimental Medicine and Systems Biology, RWTH Aachen University Hospital, Aachen, Germany; Institute for Computational Biomedicine, Heidelberg University Hospital, Heidelberg, Germany
| | - Anna K Galyga
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany
| | - Ellen Sistemich
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany
| | - Bella Banjanin
- Department of Developmental Biology, Erasmus University Medical Center, Rotterdam, the Netherlands; Oncode Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Niclas Flosdorf
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany
| | - Eric Bindels
- Department of Hematology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Kathrin Olschok
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, RWTH Aachen University Hospital, Aachen, Germany; Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf (CIO ABCD), Aachen, Germany
| | - Katharina Biaesch
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, RWTH Aachen University Hospital, Aachen, Germany; Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf (CIO ABCD), Aachen, Germany
| | - Nicolas Chatain
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, RWTH Aachen University Hospital, Aachen, Germany; Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf (CIO ABCD), Aachen, Germany
| | | | - Andrew Dunbar
- Human Oncology and Pathogenesis Program, Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Rita Sarkis
- Laboratory of Regenerative Hematopoiesis, Department of Biomedical Sciences (DSB), Université de Lausanne (UNIL), Lausanne, Switzerland
| | - Olaia Naveiras
- Laboratory of Regenerative Hematopoiesis, Department of Biomedical Sciences (DSB), Université de Lausanne (UNIL), Lausanne, Switzerland
| | - Marie-Luise Berres
- Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf (CIO ABCD), Aachen, Germany; Medical Department III, RWTH University Hospital Aachen, Aachen, Germany
| | - Steffen Koschmieder
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, RWTH Aachen University Hospital, Aachen, Germany; Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf (CIO ABCD), Aachen, Germany
| | - Ross L Levine
- Human Oncology and Pathogenesis Program, Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ivan G Costa
- Institute for Computational Genomics, RWTH Aachen University Hospital, Aachen, Germany
| | - Hélène F E Gleitz
- Department of Developmental Biology, Erasmus University Medical Center, Rotterdam, the Netherlands; Oncode Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Rafael Kramann
- Institute of Experimental Medicine and Systems Biology, RWTH Aachen University Hospital, Aachen, Germany; Department of Internal Medicine, Nephrology and Transplantation, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Nephrology and Clinical Immunology, RWTH Aachen University Hospital, Aachen, Germany
| | - Rebekka K Schneider
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen, Germany; Department of Developmental Biology, Erasmus University Medical Center, Rotterdam, the Netherlands; Oncode Institute, Erasmus University Medical Center, Rotterdam, the Netherlands.
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Dzimitrowicz HE, Wilson LE, Jackson BE, Spees LP, Baggett CD, Greiner MA, Kaye DR, Zhang T, George D, Scales CD, Pritchard JE, Leapman MS, Gross CP, Dinan MA, Wheeler SB. End-of-Life Care for Patients With Metastatic Renal Cell Carcinoma in the Era of Oral Anticancer Therapy. JCO Oncol Pract 2023; 19:e213-e227. [PMID: 36413741 PMCID: PMC9970274 DOI: 10.1200/op.22.00401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 08/31/2022] [Accepted: 10/06/2022] [Indexed: 11/23/2022] Open
Abstract
PURPOSE New therapies including oral anticancer agents (OAAs) have improved outcomes for patients with metastatic renal cell carcinoma (mRCC). However, little is known about the quality of end-of-life (EOL) care and systemic therapy use at EOL in patients receiving OAAs or with mRCC. METHODS We retrospectively analyzed EOL care for decedents with mRCC in two parallel cohorts: (1) patients (RCC diagnosed 2004-2015) from the University of North Carolina's Cancer Information and Population Health Resource (CIPHR) and (2) patients (diagnosed 2007-2015) from SEER-Medicare. We assessed hospice use in the last 30 days of life and existing measures of poor-quality EOL care: systemic therapy, hospital admission, intensive care unit admission, and > 1 ED visit in the last 30 days of life; hospice initiation in the last 3 days of life; and in-hospital death. Associations between OAA use, patient and provider characteristics, and EOL care were examined using multivariable logistic regression. RESULTS We identified 410 decedents in the CIPHR cohort (53.4% received OAA) and 1,508 in SEER-Medicare (43.5% received OAA). Prior OAA use was associated with increased systemic therapy in the last 30 days of life in both cohorts (CIPHR: 26.5% v 11.0%; P < .001; SEER-Medicare: 23.4% v 11.7%; P < .001), increased in-hospital death in CIPHR, and increased hospice in the last 30 days in SEER-Medicare. Older patients were less likely to receive systemic therapy or be admitted in the last 30 days or die in hospital. CONCLUSION Patients with mRCC who received OAAs and younger patients experienced more aggressive EOL care, suggesting opportunities to optimize high-quality EOL care in these groups.
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Affiliation(s)
| | - Lauren E. Wilson
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | | | - Lisa P. Spees
- Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC
| | - Christopher D. Baggett
- Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC
- Department of Epidemiology, Gillings School of Global Public Health, UNC-CH, Chapel Hill, NC
| | - Melissa A. Greiner
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | - Deborah R. Kaye
- Department of Surgery (Urology), Duke University School of Medicine, Durham, NC
- Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, NC
| | - Tian Zhang
- Division of Hematology and Oncology, Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX
- Division of Medical Oncology, Department of Medicine, Duke University, Durham, NC
| | - Daniel George
- Department of Medicine, Duke University School of Medicine, Durham, NC
- Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, NC
| | - Charles D. Scales
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
- Department of Surgery (Urology), Duke University School of Medicine, Durham, NC
| | - Jessica E. Pritchard
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | - Michael S. Leapman
- Department of Urology, Yale School of Medicine, New Haven, CT
- Yale Cancer Outcomes, Public Policy, and Effectiveness Research Center, New Haven, CT
| | - Cary P. Gross
- Yale Cancer Outcomes, Public Policy, and Effectiveness Research Center, New Haven, CT
- Department of Medicine, Yale School of Medicine, New Haven, CT
| | - Michaela A. Dinan
- Department of Medicine, Yale School of Medicine, New Haven, CT
- Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, CT
| | - Stephanie B. Wheeler
- Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC
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Ming DY, Jones KA, White MJ, Pritchard JE, Hammill BG, Bush C, Jackson GL, Raman SR. Healthcare Utilization for Medicaid-Insured Children with Medical Complexity: Differences by Sociodemographic Characteristics. Matern Child Health J 2022; 26:2407-2418. [PMID: 36198851 PMCID: PMC10026355 DOI: 10.1007/s10995-022-03543-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To compare differences in healthcare utilization and costs for Medicaid-insured children with medical complexity (CMC) by race/ethnicity and rurality. METHODS Retrospective cohort of North Carolina (NC) Medicaid claims for children 3-20 years old with 3 years continuous Medicaid coverage (10/1/2015-9/30/2018). Exposures were medical complexity, race/ethnicity, and rurality. Three medical complexity levels were: without chronic disease, non-complex chronic disease, and complex chronic disease; the latter were defined as CMC. Race/ethnicity was self-reported in claims; we defined rurality by home residence ZIP codes. Utilization and costs were summarized for 1 year (10/1/2018-9/30/2019) by complexity level classification and categorized as acute care (hospitalization, emergency [ED]), outpatient care (primary, specialty, allied health), and pharmacy. Per-complexity group utilization rates (per 1000 person-years) by race/ethnicity and rurality were compared using adjusted rate ratios (ARR). RESULTS Among 859,166 Medicaid-insured children, 118,210 (13.8%) were CMC. Among CMC, 36% were categorized as Black non-Hispanic, 42.7% White non-Hispanic, 14.3% Hispanic, and 35% rural. Compared to White non-Hispanic CMC, Black non-Hispanic CMC had higher hospitalization (ARR = 1.12; confidence interval, CI 1.08-1.17) and ED visit (ARR = 1.17; CI 1.16-1.19) rates; Hispanic CMC had lower ED visit (ARR = 0.77; CI 0.75-0.78) and hospitalization rates (ARR = 0.79; CI 0.73-0.84). Black non-Hispanic and Hispanic CMC had lower outpatient visit rates than White non-Hispanic CMC. Rural CMC had higher ED (ARR = 1.13; CI 1.11-1.15) and lower primary care utilization rates (ARR = 0.87; CI 0.86-0.88) than urban CMC. DISCUSSION Healthcare utilization varied by race/ethnicity and rurality for Medicaid-insured CMC. Further studies should investigate mechanisms for these variations and expand higher value, equitable care delivery for CMC.
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Affiliation(s)
- David Y Ming
- Department of Medicine, Duke University School of Medicine, Durham, NC, USA.
- Department of Pediatrics, Duke University School of Medicine, Box 102376, Durham, NC, 27710, USA.
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, USA.
| | - Kelley A Jones
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, USA
| | - Michelle J White
- Department of Pediatrics, Duke University School of Medicine, Box 102376, Durham, NC, 27710, USA
| | - Jessica E Pritchard
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, USA
| | - Bradley G Hammill
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, USA
| | | | - George L Jackson
- Department of Medicine, Duke University School of Medicine, Durham, NC, USA
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, USA
- Department of Family Medicine and Community Health, Duke University School of Medicine, Durham, NC, USA
- Center of Innovation to Accelerate Discovery and Practice Transformation (ADAPT), Durham Veterans Affairs Health Care System, Durham, NC, USA
| | - Sudha R Raman
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, USA
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Dinan MA, Wilson LE, Greiner MA, Spees LP, Pritchard JE, Zhang T, Kaye D, George D, Scales CD, Baggett CD, Gross CP, Leapman MS, Wheeler SB. Oral Anticancer Agent (OAA) Adherence and Survival in Elderly Patients With Metastatic Renal Cell Carcinoma (mRCC). Urology 2022; 168:129-136. [PMID: 35878815 PMCID: PMC9588695 DOI: 10.1016/j.urology.2022.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 06/27/2022] [Accepted: 07/10/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To examine real-world adherence to oral anticancer agents (OAAs) and its association with outcomes among Medicare beneficiaries with metastatic renal cell carcinoma (mRCC). METHODS SEER-Medicare retrospective cohort study of patients with metastatic renal cell carcinoma (mRCC) who received an OAA between 2007 and 2015. We examined A) adherence and B) overall and disease-specific 2-year survival landmarked at 3 months after OAA initiation. Adherence was assessed by calculating the proportion of days covered (PDC) within 3 months of OAA initiation, with adherent use being defined as PDC > 80%. RESULTS A total of 905 patients met study criteria, of whom 445 patients (49.2%) were categorized as adherent to initial OAA treatment. Adjusting for clinical and demographic factors revealed decreased odds of adherence associated with living within an impoverished neighborhood (OR 0.49, CI 0.0.33 - 0.74) and out-of-pocket costs > $200 (OR 0.68, CI 0.47-.98). Adherence was associated with improved 2-year survival in univariate analysis (logrank test, P = .01) and a non-significant trend toward an association with decreased all-cause (HR 0.87, CI 0.72 - 1.05) and RCC-specific survival (HR 0.84, CI 0.69 - 1.03) in multivariable analysis. CONCLUSION Local poverty levels and high out-of-pocket costs are associated with poor initial adherence to OAA therapy in Medicare beneficiaries with mRCC, which in turn, suggests a trend toward poor overall and disease-specific survival. Efforts to improve outcomes in the broader mRCC population should incorporate OAA adherence and economic factors.
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Affiliation(s)
- Michaela A Dinan
- Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, CT; Yale Cancer Outcomes, Public Policy, and Effectiveness Research Center, New Haven, CT.
| | - Lauren E Wilson
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | - Melissa A Greiner
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | - Lisa P Spees
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC; Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC
| | - Jessica E Pritchard
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | - Tian Zhang
- Duke Cancer Institute, Durham, NC; Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, NC; Department of Medicine, Duke University School of Medicine, Durham, NC
| | - Deborah Kaye
- Department of Surgery (Urology), Duke University School of Medicine, Durham, NC
| | - Daniel George
- Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, NC; Department of Medicine, Duke University School of Medicine, Durham, NC
| | - Charles D Scales
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC; Department of Surgery (Urology), Duke University School of Medicine, Durham, NC
| | - Chris D Baggett
- Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC; Department of Epidemiology, Gillings School of Global Public Health, UNC-CH, Chapel Hill, NC
| | - Cary P Gross
- Yale Cancer Outcomes, Public Policy, and Effectiveness Research Center, New Haven, CT; Department of Medicine, Yale School of Medicine, New Haven, CT
| | - Michael S Leapman
- Yale Cancer Outcomes, Public Policy, and Effectiveness Research Center, New Haven, CT; Department of Urology, Yale School of Medicine, New Haven, CT
| | - Stephanie B Wheeler
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC; Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC
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Spees LP, Dinan MA, Jackson BE, Baggett CD, Wilson LE, Greiner MA, Kaye DR, Zhang T, George DJ, Scales CD, Pritchard JE, Leapman M, Gross CP, Wheeler SB. Patient- And Provider-Level Predictors of Survival Among Patients With Metastatic Renal Cell Carcinoma Initiating Oral Anticancer Agents. Clin Genitourin Cancer 2022; 20:e396-e405. [PMID: 35595633 PMCID: PMC9529768 DOI: 10.1016/j.clgc.2022.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 04/14/2022] [Accepted: 04/18/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE In an era of rapid expansion of FDA approvals for oral anticancer agents (OAAs), it is important to understand the factors associated with survival among real-world populations, which include groups not well-represented in pivotal clinical trials of OAAs, such as the elderly, racial minorities, and medically complex patients. Our objective was to evaluate patient- and provider-level characteristics' associations with mortality among a multi-payer cohort of metastatic renal cell carcinoma (mRCC) patients who initiated OAAs. METHODS This retrospective cohort study was conducted using data from the North Carolina state cancer registry linked to multi-payer claims data for the years 2004 to 2015. Provider data were obtained from North Carolina Health Professions Data System and the National Plan & Provider Enumeration System. Included patients were individuals with mRCC who initiated an OAA and survived ≥90 days after beginning treatment. We estimated hazard ratios (HR) and corresponding 95% confidence limits (CL) using Cox hazard models for associations between patient demographics, patient clinical characteristics, provider-level factors, and 2-year all-cause mortality. RESULTS The cohort included 207 patients with mRCC who received OAAs. In multivariable models, clinical variables such as frailty (HR: 1.36, 95% CL: 1.11-1.67) and de novo metastatic diagnosis (HR: 2.63, 95%CL: 1.67-4.16) were associated with higher all-cause mortality. Additionally, patients solely on Medicare had higher adjusted all-cause mortality compared with patients with any private insurance (HR: 2.35, 95% CL: 1.32-4.18). No provider-level covariates investigated were associated with all-cause mortality. CONCLUSIONS Within a real-world population of mRCC patients taking OAAs, survival differed based on patient characteristics. In an era of rapid expansion of FDA approvals for OAAs, these real-world data underscore the continued importance of access to high-quality care, particularly for medically complex patients with limited resources.
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Affiliation(s)
- Lisa P Spees
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC; Lineberger Comprehensive Cancer Center (LCCC), UNC-CH, Chapel Hill, NC, USA.
| | - Michaela A Dinan
- Cancer Outcomes, Public Policy, and Effectiveness Research (COPPER) Center, Yale School of Medicine, New Haven, CT, USA; Department of Chronic Disease Epidemiology, Yale School of Medicine, Yale School of Public Health, New Haven, CT, USA
| | - Bradford E Jackson
- Lineberger Comprehensive Cancer Center (LCCC), UNC-CH, Chapel Hill, NC, USA
| | - Christopher D Baggett
- Lineberger Comprehensive Cancer Center (LCCC), UNC-CH, Chapel Hill, NC, USA; Department of Epidemiology, Gillings School of Global Public Health, UNC-CH, Chapel Hill, NC, USA
| | - Lauren E Wilson
- Department of Population Health Sciences, Duke University School of Medicine (DUSM), Durham, NC, USA
| | - Melissa A Greiner
- Department of Population Health Sciences, Duke University School of Medicine (DUSM), Durham, NC, USA
| | - Deborah R Kaye
- Duke Cancer Institute (DCI) Center for Prostate and Urologic Cancers, Durham, NC, USA; Department of Surgery (Urology), DUSM, Durham, NC, USA
| | - Tian Zhang
- Department of Medicine, DUSM, Durham, NC, USA; Department of Surgery (Urology), DUSM, Durham, NC, USA
| | - Daniel J George
- Duke Cancer Institute (DCI) Center for Prostate and Urologic Cancers, Durham, NC, USA; Department of Medicine, DUSM, Durham, NC, USA
| | - Charles D Scales
- Department of Population Health Sciences, Duke University School of Medicine (DUSM), Durham, NC, USA; Department of Surgery (Urology), DUSM, Durham, NC, USA
| | - Jessica E Pritchard
- Department of Population Health Sciences, Duke University School of Medicine (DUSM), Durham, NC, USA
| | - Michael Leapman
- Cancer Outcomes, Public Policy, and Effectiveness Research (COPPER) Center, Yale School of Medicine, New Haven, CT, USA; Department of Urology, Yale School of Medicine, New Haven, CT, USA
| | - Cary P Gross
- Cancer Outcomes, Public Policy, and Effectiveness Research (COPPER) Center, Yale School of Medicine, New Haven, CT, USA; Department of Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Stephanie B Wheeler
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC; Lineberger Comprehensive Cancer Center (LCCC), UNC-CH, Chapel Hill, NC, USA; Duke Cancer Institute (DCI), DUSM, Durham, NC, USA
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Pritchard JE, Wilson LE, Miller SM, Greiner MA, Cohen HJ, Kaye DR, Zhang T, Dinan MA. Association between cognitive impairment and oral anticancer agent use in older patients with metastatic renal cell carcinoma. J Am Geriatr Soc 2022; 70:2330-2343. [PMID: 35499667 PMCID: PMC9378524 DOI: 10.1111/jgs.17826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/14/2022] [Accepted: 03/28/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND Kidney cancer is the fastest-growing cancer diagnosis in the developed world. About 16% of new cases are stage IV, which has a low five-year survival rate. Many patients with metastatic renal cell carcinoma (mRCC) are older and may have mild cognitive impairment or dementia (MCI/D). Given prior reports of patients with dementia initiating less cancer therapy and the importance of oral anticancer agents (OAAs) in mRCC treatment, we investigated the prevalence of preexisting MCI/D in patients with mRCC and their OAA use. METHODS SEER-Medicare patients were analyzed who were ≥65 years, diagnosed with mRCC between 2007 and 2015, and had Medicare part D coverage. Patterns and predictors of (a) OAA utilization within the 12 months following mRCC diagnosis and (b) adherence (percent of days covered [PDC] ≥ 80%) during the first 90 days following treatment initiation were assessed. RESULTS Of the 2792 eligible patients, 268 had preexisting MCI/D, and 907 initiated OAA treatment within 12 months of mRCC diagnosis. Patients with preexisting MCI/D were less likely to begin an OAA than those without MCI/D (fully-adjusted HR 0.53, 95% CI 0.38-0.76). Among OAA initiators, a preexisting MCI/D diagnosis did not alter the likelihood that a person would be adherent (adjusted RR 0.84, 95% CI 0.55-1.28). CONCLUSIONS Patients with preexisting MCI/D were half as likely to start an OAA during the year following mRCC diagnosis than patients without comorbid MCI/D. The 90-day adherence of OAA initiators was not significantly different between those with and without preexisting MCI/D. In light of this, clinicians should assess mRCC patients for cognitive impairment and take steps to optimize OAA utilization by those with MCI/D.
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Affiliation(s)
| | | | - Samuel M. Miller
- National Clinician Scholars Program, Yale University
- Department of Surgery, Yale University
| | | | - Harvey Jay Cohen
- Center for the Study of Aging and Human Development, Duke University
| | | | - Tian Zhang
- Division of Medical Oncology, Department of Medicine, Duke University
- Division of Hematology and Oncology, Department of Internal Medicine, UT Southwestern Medical Center
| | - Michaela A. Dinan
- Department of Chronic Disease Epidemiology, Yale School of Public Health
- Yale Cancer Outcomes, Public Policy, and Effectiveness Research Center
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Miller SM, Wilson LE, Greiner MA, Pritchard JE, Zhang T, Kaye DR, Cohen HJ, Becher RD, Maerz LL, Dinan MA. Evaluation of mild cognitive impairment and dementia in patients with metastatic renal cell carcinoma. J Geriatr Oncol 2022; 13:635-643. [PMID: 34996724 PMCID: PMC9232862 DOI: 10.1016/j.jgo.2021.12.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 12/07/2021] [Accepted: 12/14/2021] [Indexed: 01/07/2023]
Abstract
BACKGROUND Dementia and cancer are both more common in adults as they age. As new cancer treatments become more popular, it is important to consider how these treatments might affect older patients. This study evaluates metastatic renal cell carcinoma (mRCC) as a risk factor for older adults developing mild cognitive impairment or dementia (MCI/D) and the impact of mRCC-directed therapies on the development of MCI/D. METHODS We identified patients diagnosed with mRCC in a Surveillance, Epidemiology, and End Results (SEER)-Medicare dataset from 2007 to 2015 and matched them to non-cancer controls. Exclusion criteria included age < 65 years at mRCC diagnosis and diagnosis of MCI/D within the year preceding mRCC diagnosis. The main outcome was time to incident MCI/D within one year of mRCC diagnosis for cases or cohort entry for non-cancer controls. Cox proportional hazards models were used to measure associations between mRCC and incident MCI/D as well as associations of oral anticancer agent (OAA) use with MCI/D development within the mRCC group. RESULTS Patients with mRCC (n = 2533) were matched to non-cancer controls (n = 7027). mRCC (hazard ratio [HR] 8.52, p < .001), being older (HR 1.05 per 1-year age increase, p < .001), and identifying as Black (HR 1.92, p = .047) were predictive of developing MCI/D. In addition, neither those initiating treatment with OAAs nor those who underwent nephrectomy were more likely to develop MCI/D. CONCLUSIONS Patients with mRCC were more likely to develop MCI/D than those without mRCC. The medical and surgical therapies evaluated were not associated with increased incidence of MCI/D. The increased incidence of MCI/D in older adults with mRCC may be the result of the pathology itself or risk factors common to the two disease processes.
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Affiliation(s)
- Samuel M Miller
- National Clinician Scholars Program, Yale University, USA; Department of Surgery, Yale University, USA.
| | - Lauren E Wilson
- Department of Population Health Sciences, Duke University, USA
| | | | | | - Tian Zhang
- Division of Hematology and Oncology, Department of Internal Medicine, UT Southwestern Medical Center, USA
| | - Deborah R Kaye
- Department of Surgery, Division of Urology, Duke University, USA
| | - Harvey Jay Cohen
- Center for the Study of Aging and Human Development, Duke University, USA
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Kaye DR, Wilson LE, Greiner MA, Spees LP, Pritchard JE, Zhang T, Pollack CE, George D, Scales CD, Baggett CD, Gross CP, Leapman MS, Wheeler SB, Dinan MA. Patient, provider, and hospital factors associated with oral anti-neoplastic agent initiation and adherence in older patients with metastatic renal cell carcinoma. J Geriatr Oncol 2022; 13:614-623. [PMID: 35125336 PMCID: PMC9232903 DOI: 10.1016/j.jgo.2022.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 12/16/2021] [Accepted: 01/13/2022] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Oral anti-neoplastic agents (OAAs) for metastatic renal cell carcinoma (mRCC) are associated with increased cancer-specific survival. However, racial disparities in survival persist and older adults have the lowest rates of cancer-specific survival. Research from other cancers demonstrates specialty access is associated with high-quality cancer care, but older adults receive cancer treatment less often than younger adults. We therefore examined whether patient, provider, and hospital characteristics were associated with OAA initiation, adherence, and cancer-specific survival after initiation and whether race, ethnicity, and/or age was associated with an increased likelihood of seeing a medical oncologist for diagnosis of mRCC. PATIENTS AND METHODS We used Surveillance, Epidemiology, and End Results (SEER)Medicare data to identify patients ≥65 years of age who were diagnosed with mRCC from 2007 to 2015 and enrolled in Medicare Part D. Insurance claims were used to identify receipt of OAAs within twelve months of metastatic diagnosis, calculate proportion of days covered, and to identify the primary cancer provider and hospital. We examined provider and hospital characteristics associated with OAA initiation, adherence, and all-cause mortality after OAA initiation. RESULTS We identified 2792 patients who met inclusion criteria. Increased OAA initiation was associated with access to a medical oncologist. Patients were less likely to begin OAA treatment if their primary oncologic provider was a urologist (hazard ratio [HR] 0.62; 95% confidence interval [CI] 0.49-0.77). Provider/hospital characteristics were not associated with differences in OAA adherence or mortality. Patients who started sorafenib (odds ratio [OR] 0.50; 95% CI 0.29-0.86), were older (aged >81 OR 0.56; 95% CI 0.34-0.92), and those living in high poverty ZIP codes (OR 0.48; 95% CI 0.29-0.80) were less likely to adhere to OAA treatment. Furthermore, provider characteristics did not account for differences in mortality once an OAA was initiated. Last, only age > 81 years was statistically and clinically associated with a decreased relative risk of seeing a medical oncologist (risk ratio [RR] 0.87; CI 0.82-0.92). CONCLUSION Provider/hospital factors, specifically, being seen by a medical oncologist for mRCC diagnosis, are associated with OAA initiation. Older patients were less likely to see a medical oncologist; however, race and/or ethnicity was not associated with differences in seeing a medical oncologist. Patient factors are more critical to OAA adherence and mortality after OAA initiation than provider/hospital factors.
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Affiliation(s)
- Deborah R Kaye
- Department of Surgery (Urology), Duke University School of Medicine, Durham, NC, United States of America; Duke-Margolis Policy Center, Duke University School of Medicine, Durham, NC, United States of America; Duke Cancer Institute, Durham, NC, United States of America
| | - Lauren E Wilson
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, United States of America
| | - Melissa A Greiner
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, United States of America
| | - Lisa P Spees
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC, United States of America; Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC, United States of America
| | - Jessica E Pritchard
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, United States of America
| | - Tian Zhang
- Duke Cancer Institute, Durham, NC, United States of America; Department of Medicine, Duke University School of Medicine, Durham, NC, United States of America
| | - Craig E Pollack
- Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Daniel George
- Duke Cancer Institute, Durham, NC, United States of America; Department of Medicine, Duke University School of Medicine, Durham, NC, United States of America
| | - Charles D Scales
- Department of Surgery (Urology), Duke University School of Medicine, Durham, NC, United States of America; Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, United States of America
| | - Chris D Baggett
- Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC, United States of America; Department of Epidemiology, Gillings School of Global Public Health, UNC-CH, Chapel Hill, NC, United States of America
| | - Cary P Gross
- Department of Medicine, Yale School of Medicine, New Haven, CT, United States of America; Yale Cancer Outcomes, Public Policy, and Effectiveness Research Center, New Haven, CT, United States of America
| | - Michael S Leapman
- Yale Cancer Outcomes, Public Policy, and Effectiveness Research Center, New Haven, CT, United States of America; Department of Urology, Yale School of Medicine, New Haven, CT, United States of America
| | - Stephanie B Wheeler
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC, United States of America; Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC, United States of America
| | - Michaela A Dinan
- Department of Urology, Yale School of Medicine, New Haven, CT, United States of America.
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Spees LP, Wheeler SB, Jackson BE, Baggett CD, Wilson LE, Greiner MA, Kaye DR, Zhang T, George D, Scales CD, Pritchard JE, Leapman M, Gross CP, Dinan MA. Provider- and patient-level predictors of oral anticancer agent initiation and adherence in patients with metastatic renal cell carcinoma. Cancer Med 2021; 10:6653-6665. [PMID: 34480518 PMCID: PMC8495289 DOI: 10.1002/cam4.4201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 01/25/2023] Open
Abstract
Background Improving oral anticancer agent (OAA) initiation and adherence is the important quality‐of‐care issues, particularly since one fourth of anticancer agents being developed will be administered orally. Our objective was to identify provider‐ and patient‐level characteristics associated with OAA initiation and adherence among individuals with metastatic renal cell carcinoma (mRCC). Methods We used state cancer registry data linked to multi‐payer claims data to identify patients with mRCC diagnosed in 2004–2015. Provider data were obtained from North Carolina Health Professions Data System and the National Plan & Provider Enumeration System. We estimated risk ratios (RRs) and corresponding 95% confidence limits (CLs) using modified Poisson regression to evaluate factors associated with OAA initiation and adherence. Results Among the 207 (out of 687) patients who initiated an OAA following mRCC diagnosis and survived 90 days, median proportion of days covered was 0.91. Patients with a modal provider specializing in hematology/medical oncology were much more likely to initiate OAAs than those seen by other specialties. Additionally, patients with a female provider were more likely to initiate OAAs than those with a male provider. Compared to patients treated by providers practicing in both urban and rural areas, patients with providers practicing solely in urban areas were more likely to initiate OAAs, after controlling for patient‐level factors (RR = 1.37; 95% CL: 1.09–1.73). Medicare patients were less likely to be adherent than those with private insurance (RR = 0.61; 95% CL: 0.42–0.87). Conclusions Our results suggest that provider‐ and patient‐level factors influence OAA initiation in patients with mRCC but only insurance type was associated with adherence.
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Affiliation(s)
- Lisa P Spees
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, North Carolina, USA.,Lineberger Comprehensive Cancer Center (LCCC), UNC-CH, Chapel Hill, North Carolina, USA
| | - Stephanie B Wheeler
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, North Carolina, USA.,Lineberger Comprehensive Cancer Center (LCCC), UNC-CH, Chapel Hill, North Carolina, USA
| | - Bradford E Jackson
- Lineberger Comprehensive Cancer Center (LCCC), UNC-CH, Chapel Hill, North Carolina, USA
| | - Christopher D Baggett
- Lineberger Comprehensive Cancer Center (LCCC), UNC-CH, Chapel Hill, North Carolina, USA.,Department of Epidemiology, Gillings School of Global Public Health, UNC-CH, Chapel Hill, North Carolina, USA
| | - Lauren E Wilson
- Department of Population Health Sciences, Duke University School of Medicine (DUSM), Durham, North Carolina, USA
| | - Melissa A Greiner
- Department of Population Health Sciences, Duke University School of Medicine (DUSM), Durham, North Carolina, USA
| | - Deborah R Kaye
- Duke Cancer Institute (DCI) Center for Prostate and Urologic Cancers, Durham, North Carolina, USA.,Department of Medicine, DUSM, Durham, North Carolina, USA
| | - Tian Zhang
- Duke Cancer Institute (DCI) Center for Prostate and Urologic Cancers, Durham, North Carolina, USA.,Department of Medicine, DUSM, Durham, North Carolina, USA.,Department of Surgery (Urology), DUSM, Durham, North Carolina, USA
| | - Daniel George
- Duke Cancer Institute (DCI) Center for Prostate and Urologic Cancers, Durham, North Carolina, USA.,Department of Medicine, DUSM, Durham, North Carolina, USA
| | - Charles D Scales
- Department of Population Health Sciences, Duke University School of Medicine (DUSM), Durham, North Carolina, USA.,Department of Surgery (Urology), DUSM, Durham, North Carolina, USA
| | - Jessica E Pritchard
- Department of Population Health Sciences, Duke University School of Medicine (DUSM), Durham, North Carolina, USA
| | - Michael Leapman
- Department of Urology, Yale School of Medicine, New Haven, Connecticut, USA.,Cancer Outcomes, Public Policy, and Effectiveness Research (COPPER) Center, Yale School of Medicine, New Haven, Connecticut, USA
| | - Cary P Gross
- Cancer Outcomes, Public Policy, and Effectiveness Research (COPPER) Center, Yale School of Medicine, New Haven, Connecticut, USA.,Department of Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Michaela A Dinan
- Cancer Outcomes, Public Policy, and Effectiveness Research (COPPER) Center, Yale School of Medicine, New Haven, Connecticut, USA.,Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, Connecticut, USA
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Wheeler SB, Spees LP, Jackson BE, Baggett CD, Wilson LE, Greiner MA, Kaye DR, Zhang T, George D, Scales CD, Pritchard JE, Dinan MA. Patterns and Predictors of Oral Anticancer Agent Use in Diverse Patients With Metastatic Renal Cell Carcinoma. JCO Oncol Pract 2021; 17:e1895-e1904. [PMID: 34138665 DOI: 10.1200/op.20.01082] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Availability of targeted oral anticancer agents (OAAs) has transformed care for patients with metastatic renal cell carcinoma (mRCC). Our objective was to identify patterns and predictors of OAA use within 12 months after mRCC was detected to understand real-world adoption of OAAs. METHODS We used a novel, North Carolina cancer registry-linked multipayer claims data resource to examine patterns of use of five oral therapies among patients with mRCC diagnosed in 2006-2015, with claims through 2016. Patients were required to have 12 months of continuous enrollment before metastatic index date. Log-Poisson models estimated unadjusted and adjusted risk ratios (RRs) for associations between patient characteristics and OAA use. In sensitivity analyses, we used a competing risk framework to estimate adjusted risk differences in OAA use. RESULTS Our population-based study of 713 patients demonstrated low (37%) OAA use during the first year after metastatic index date among both publicly and privately insured patients, with shifting patterns of use consistent with regulatory approvals over time. Compared with patients age 18-49 years, patients age 70-74 years were half likely to use OAAs (95% confidence limit [CL], 0.34 to 0.78) and patients age 80+ years were 71% less likely to use OAAs (95% CL, 0.17 to 0.50). Patients with two comorbidities (RR, 0.73; 95% CL, 0.55 to 0.98) and those with 3+ comorbidities (RR, 0.68; 95% CL, 0.50 to 0.91) were less likely to receive OAA than those without comorbidities. Patients with higher frailty also had lower OAA utilization (RR, 0.67; 95% CL, 0.52 to 0.85). CONCLUSION These findings suggest a need to better understand the system-level and provider-level drivers of OAA underuse, as well as OAA adherence and associated survival.
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Affiliation(s)
- Stephanie B Wheeler
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC.,Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC
| | - Lisa P Spees
- Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC.,Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC
| | | | - Christopher D Baggett
- Lineberger Comprehensive Cancer Center, UNC-CH, Chapel Hill, NC.,Department of Epidemiology, Gillings School of Global Public Health, UNC-CH, Chapel Hill, NC
| | - Lauren E Wilson
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | - Melissa A Greiner
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | - Deborah R Kaye
- Department of Medicine, Duke University School of Medicine, Durham, NC.,Department of Surgery (Urology), Duke University School of Medicine, Durham, NC
| | - Tian Zhang
- Department of Surgery (Urology), Duke University School of Medicine, Durham, NC.,Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, NC
| | - Daniel George
- Department of Surgery (Urology), Duke University School of Medicine, Durham, NC.,Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, NC
| | - Charles D Scales
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC.,Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, NC
| | - Jessica E Pritchard
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | - Michaela A Dinan
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC.,Duke Cancer Institute, Durham, NC
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Boggan JC, McCarthy SH, Pritchard JE, O’Brien G, Walmer DK. Prevalence of hypertension and peripheral arterial disease in adults in Léogâne, Haiti. Journal of Global Health Reports 2019. [DOI: 10.29392/joghr.3.e2019031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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12
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Pritchard JE, Dillon PM, Conaway MR, Silva CM, Parsons SJ. A mechanistic study of the effect of doxorubicin/adriamycin on the estrogen response in a breast cancer model. Oncology 2012; 83:305-20. [PMID: 22964943 DOI: 10.1159/000341394] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Accepted: 06/19/2012] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Estrogen treatment limits the cytotoxic effects of chemotherapy in estrogen receptor-positive (ER+) breast cancer cell lines, suggesting that estrogen pathway signaling may confer chemotherapeutic resistance. This study investigates the molecular responses of ER+ breast cancer cell lines to the chemotherapeutic agent, doxorubicin, in the presence or absence of estrogen. METHODS ER+ MCF-7 and T47-D cells were cultured in hormone-starved or estrogen-containing media with or without doxorubicin at concentrations mimicking the low concentrations seen in plasma and tumor microenvironments in humans following typical bolus administration. Protein levels, phosphorylations, and interactions of estrogen-signaling molecules were assessed following these treatments, as well the effects of ER signaling inhibitors on cell proliferation. RESULTS Surprisingly, estrogen and doxorubicin co-treatment markedly induced pro-growth alterations compared to doxorubicin alone and modestly enhanced estrogen alone-induced changes. Several inhibitors suppressed cell proliferation in the presence of doxorubicin and estrogen. CONCLUSIONS These findings demonstrate that molecular changes caused by doxorubicin in ER+ breast cancer cells can be reversed by estrogen, providing molecular evidence for the poorer responses of ER+ tumors to doxorubicin in the presence of physiologic estrogen levels. Our results also suggest that the addition of drugs targeting the ER, EGFR, the SFKs, MEK, PI3K, and/or the MMP proteins to a conventional chemotherapy regimen may improve chemosensitivity.
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Affiliation(s)
- Jessica E Pritchard
- Department of Microbiology and Cancer Center, University of Virginia, Charlottesville, VA 22908, USA
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13
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Gurd FB, Ackman D, Gerrie JW, Pritchard JE. A PRACTICAL CONCEPT FOR THE TREATMENT OF MAJOR AND MINOR BURNS: THE IMPORTANCE OF TIMING THEREIN. Ann Surg 2007; 116:641-57. [PMID: 17858125 PMCID: PMC1543907 DOI: 10.1097/00000658-194211650-00001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Ackman D, Gerrie JW, Pritchard JE, Mills ES. A Report on the Management of Burns: Using the Occlusive Compression Dressing, with Sulfathiazole Emulsion. Ann Surg 2007; 119:161-77. [PMID: 17858340 PMCID: PMC1617838 DOI: 10.1097/00000658-194402000-00001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pritchard JE, Nowson CA, Wark JD. A worksite program for overweight middle-aged men achieves lesser weight loss with exercise than with dietary change. J Am Diet Assoc 1997; 97:37-42. [PMID: 8990415 DOI: 10.1016/s0002-8223(97)00015-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To compare changes in total and regional body composition using dual energy X-ray absorptiometry (DEXA) after subjects lost weight through change in diet or exercise. DESIGN A 12-month, randomized, controlled study of two weight-loss interventions-low-fat diet ad libitum or moderate, unsupervised exercise-in free-living, middle-aged men. Compliance was determined at monthly measurement sessions through food records and activity logs; DEXA scans were performed every 3 months. SUBJECTS/SETTING Fifty-eight overweight men (mean body mass index = 29.0 +/- 2.6; mean age = 43.4 +/- 5.7 years) recruited from a national corporation were assigned randomly to diet, exercise, or control groups. INTERVENTIONS One group reduced dietary fat to 26.4% of energy intake but kept activity unchanged; another group self-selected aerobic exercise (three sessions per week at 65% to 75% maximum heart rate) but kept diet unchanged. A control group maintained weight. MAIN OUTCOME MEASURES At 12 months, measurements of weight, total and regional fat mass and lean mass, energy intake, and percentage dietary fat; physical activity indexes. STATISTICAL ANALYSES Results were analyzed using paired t tests and analysis of variance. RESULTS Mean weight loss was 6.4 +/- 3.3 kg in dieters and 2.6 +/- 3.0 kg in exercisers; control subjects maintained weight. DEXA scans revealed that 40% of dieters' weight loss was lean tissue; more than 80% of weight lost by exercisers was fat. Exercisers maintained limb lean tissue and lost fat mass. CONCLUSIONS Greater total weight and lean tissue loss occurred when subjects lost weight through a low-fat diet consumed ad libitum than when subjects participated in unsupervised aerobic exercise. Use of DEXA enabled identification of progressive total and regional changes in fat and lean tissue.
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Affiliation(s)
- J E Pritchard
- Department of Physiology, Royal Melbourne Hospital, University of Melbourne, Parkville, Australia
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Pritchard JE, Nowson CA, Wark JD. Bone loss accompanying diet-induced or exercise-induced weight loss: a randomised controlled study. Int J Obes Relat Metab Disord 1996; 20:513-20. [PMID: 8782726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To compare the effects of two weight loss interventions, diet or exercise, on changes in bone, fat and lean tissue. DESIGN Prospective, long term, worksite, randomised and controlled weight-loss study using a low fat diet ad libitum or moderate aerobic exercise. SUBJECTS 66 overweight men (mean age 43.4 +/- 5.7 y, BMI 29.0 +/- 2.6 kg/m2). MEASUREMENTS Body weight, lean mass, fat mass, bone mass (BMC), bone mineral density (BMD) by dual-energy X-ray absorptiometry. RESULTS Dieters lost 1.4% BMC (1.5% BMD) with 6.4 kg weight loss; there was no significant change in BMC (or in BMD) in exercisers (2.6 kg weight loss) or in control subjects (no weight change). Changes in BMC were correlated with fat loss with both interventions: 11.7 g BMC/kg fat loss in dieters, 11.4 g BMC change/kg fat loss in exercisers. CONCLUSION BMC loss with diet-induced weight loss reflects loss of weight and especially loss of body fat. Further study to determine whether similar BMC loss will accompany equivalent weight loss induced by exercise is needed.
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Affiliation(s)
- J E Pritchard
- Department of Medicine, Royal Melbourne Hospital, University of Melbourne, Parkville, Australia.
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Pritchard JE, Nowson CA, Strauss BJ, Carlson JS, Kaymakci B, Wark JD. Evaluation of dual energy X-ray absorptiometry as a method of measurement of body fat. Eur J Clin Nutr 1993; 47:216-28. [PMID: 8458318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Two densitometers, the Hologic QDR 1000W densitometer (QDR) and the Lunar DPX densitometer (DPX), were compared with four traditional methods for the measurement of body fat: underwater weighing (UWW), skinfold thickness measurements (SKM), bioelectrical impedance analysis (BIA) and deuterium oxide dilution (D2O). Precision was assessed by conducting 10 repeated observations on one subject using QDR: the coefficient of variability (CV) was 1.8% for percentage fat, 0.6% for lean mass and 2.1% for fat mass. In 10 repeated observations on three subjects, QDR CV was greater than UWW (CV percentage fat QDR 1.3% (range 0.9-1.6%) compared with 4.8% (range 3.8-6.6%) for percentage fat UWW). Based on observations of 12 subjects, correlations of QDR and DPX with UWW for percentage fat were high: Pearson's r = 0.916, P < 0.0001 for QDR and r = 0.913, P < 0.00001 for DPX. A limits of agreement estimate showed a between-method difference of +1.3% (range -4% to +7%) for QDR compared with UWW. The DPX showed a between-method difference of +4.8% (range +2% to +9%) compared with UWW. The correlation of the two DEXAs was high (r = 0.986, P < 0.0001). Correlations between both DEXA instruments and other methods were high (for QDR: r = 0.824, P < 0.001 for SKM; r = 0.972, P < 0.0001 for BIA; r = 0.787, P < 0.002 for D2O; for DPX: r = 0.923, P < 0.00001 for SKM; r = 0.910, P < 0.00001 for BIA; r = 0.812, P < 0.001 for D2O). It was concluded that QDR and DPX measured percentage fat with greater precision than UWW as reflected by the CV and correlated with other methods. Predicted percentage fat measurements using QDR would be 3% lower than DPX, but both DEXAs predict percentage fat 1.3-4.8% higher than UWW. In addition, the DEXA technique has the unique ability to produce precise regional measurements (for each arm, each leg, the head and the trunk) of bone mineral content (BMC), fat mass (FAT), lean mass (LEAN) and percentage fat.
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Affiliation(s)
- J E Pritchard
- Department of Medicine, University of Melbourne, Royal Melbourne Hospital, Victoria, Australia
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Brown AJ, Roberts DC, Pritchard JE, Truswell AS. A mixed Australian fish diet and fish-oil supplementation: impact on the plasma lipid profile of healthy men. Am J Clin Nutr 1990; 52:825-33. [PMID: 2239758 DOI: 10.1093/ajcn/52.5.825] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Twelve healthy men were fed in turn three diets for 6 wk each in a 3 x 3 randomized block design: a control diet (essentially fish free), a fish diet (200 g lean Australian fish flesh/d), and the same fish-based meal but supplemented with 5 g fish oil/d. Dietary eicosapentaenoic acid [EPA, 20: 5n-3 (omega-3)] was strongly associated with erythrocyte membrane EPA (r = 0.908 at 6 wk), strengthening its value as a measure of compliance in fish and fish-oil feeding trials. On the fish diet, subjects had increased incorporation of n-3 polyunsaturated fatty acids (PUFAs) at the expense of n-6 PUFAs in their erythrocyte membranes. When the fish-based diet was supplemented with fish oil (5 g/d), there was a significant lowering of plasma triacylglycerol (-0.16 +/- 0.24 mmol/L; mean +/- SD). No change in plasma total cholesterol was detected although the fish + oil diet produced a reduction in very-low-density-lipoprotein cholesterol (-0.24 +/- 0.26 mmol/L).
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Affiliation(s)
- A J Brown
- Department of Biochemistry, University of Sydney, NSW, Australia
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Abstract
The epidemiology of hydatid disease in man in England and Wales, based on the data collected between 1981 and 1983 at the Hydatid Reference Laboratory of the Public Health Laboratory Service, is presented. The incidence of hydatid disease was 42 cases per annum, with 2 cases per million population occurring in Wales and 0.2 per million in England. The highest prevalence was in London amongst the immigrant population. The incidence in the indigenous population was 15.5 cases per annum, with 5.6 cases per million occurring in South Powys, parts of South Wales and Herefordshire. The population most at risk is the rural, farming community in that area, but the West Midlands is also an apparent focus of the disease.
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Fisher-Hoch SP, Bartlett CL, Tobin JO, Gillett MB, Nelson AM, Pritchard JE, Smith MG, Swann RA, Talbot JM, Thomas JA. Investigation and control of an outbreaks of legionnaires' disease in a district general hospital. Lancet 1981; 1:932-6. [PMID: 6112337 DOI: 10.1016/s0140-6736(81)91626-3] [Citation(s) in RCA: 98] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Between December, 1979, and July, 1980, 12 cases of legionnaires' disease were recognised in a district general hospital. 11 of the patients probably acquired their infection within the hospital. Epidemiological and environmental studies indicated that the plumbing system and possibly also the air-conditioning cooling-tower exhaust in the new building of the hospital were the sources of infection. Chlorination of the cold-water supply and raising the hot-water temperature appeared to terminate the outbreak.
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21
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Birchard CC, Pritchard JE. UNUSUAL CASE OF PULMONARY TUBERCULOSIS. Can Med Assoc J 1946; 55:146-147. [PMID: 20323867 PMCID: PMC1582956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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22
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Wilson FN, Pritchard JE. Malignant Thymoma. Can Med Assoc J 1945; 53:444-454. [PMID: 20323594 PMCID: PMC1582359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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23
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24
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Mills ES, Pritchard JE. The Clinical and Pathological Features of a Series of Twenty Cases of Hodgkin's Disease. Can Med Assoc J 1935; 33:50-58. [PMID: 20319937 PMCID: PMC1561227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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Coburn DF, Pritchard JE. A CASE OF HODGKIN'S DISEASE WITH MARKED EOSINOPHILIA. Can Med Assoc J 1934; 30:503-507. [PMID: 20319495 PMCID: PMC403347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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26
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Pritchard JE, McRoberts JW. PHLEGMONOUS GASTRITIS: WITH A REPORT OF FOUR CASES. Can Med Assoc J 1931; 25:183-187. [PMID: 20318404 PMCID: PMC382610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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Pritchard JE. A CASE OF HAEMANGIOENDOTHELIOMA OF THE BONES OF THE WRIST. Can Med Assoc J 1931; 24:689-692. [PMID: 20318301 PMCID: PMC382461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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28
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Pritchard JE. EWING'S SARCOMA: A REPORT OF A CASE. Can Med Assoc J 1927; 17:1164-1167. [PMID: 20316532 PMCID: PMC408168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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29
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Pritchard JE. Tuberculous Ulceration of the Intestines. Can Med Assoc J 1924; 14:5-12. [PMID: 20314855 PMCID: PMC1707344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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