1,551 results on '"A. Doescher"'
Search Results
2. Immuntherapie von Kopf-Hals-Tumoren: Neuigkeiten von der ASCO-Jahresversammlung 2024
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von Witzleben, Adrian, Doescher, Johannes, Hoffmann, Thomas K., and Laban, Simon
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- 2024
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3. Barbed suture in neck dissection: a randomized clinical study on efficacy, safety and aesthetic outcome
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Doescher, Johannes, Emmanuel, Benjamin, Greve, Jens, Schuler, Patrick J., Sommer, Fabian, Laban, Simon, Veit, Johannes, and Hoffmann, Thomas K.
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- 2024
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4. Pilot implementation and qualitative evaluation of a financial hardship screening among Native American patients with cancer
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Janitz, Amanda E., Anderson-Buettner, Amber S., Madison, Stefani D., Doescher, Mark P., Nipp, Ryan, Buckner, Sheryl, and Rhoades, Dorothy A.
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- 2024
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5. Financial hardship screening among Native American patients with cancer: a qualitative analysis
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Anderson-Buettner, Amber S., Janitz, Amanda E., Doescher, Mark P., Madison, Stefanie D., Khoussine, Michaela A., Harjo, Keri L., Bear, Marvin B., Dartez, Stephnie, Buckner, Sheryl K., and Rhoades, Dorothy A.
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- 2024
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6. Financial hardship screening among Native American patients with cancer: a qualitative analysis
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Amber S. Anderson-Buettner, Amanda E. Janitz, Mark P. Doescher, Stefanie D. Madison, Michaela A. Khoussine, Keri L. Harjo, Marvin B. Bear, Stephnie Dartez, Sheryl K. Buckner, and Dorothy A. Rhoades
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Native American ,Cancer ,Financial hardship ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Cancer-related financial hardship is an increasingly recognized concern for patients, families, and caregivers. Many Native American (NA) patients are at increased risk for cancer-related financial hardship due to high prevalence of low income, medical comorbidity, and lack of private health insurance. However, financial hardship screening (FHS) implementation for NA patients with cancer has not been reported. The objective of this study is to explore facilitators and barriers to FHS implementation for NA patients. Methods We conducted key informant interviews with NA patients with cancer and with clinical staff at an academic cancer center. Included patients had a confirmed diagnosis of cancer and were referred to the cancer center through the Indian Health Service, Tribal health program, or Urban Indian health program. Interviews included questions regarding current financial hardship, experiences in discussing financial hardship with the cancer care and primary care teams, and acceptability of completing a financial hardship screening tool at the cancer center. Clinical staff included physicians, advanced practice providers, and social workers. Interviews focused on confidence, comfort, and experience in discussing financial hardship with patients. Recorded interviews were transcribed and thematically analyzed using MAXQDA® software. Results We interviewed seven patients and four clinical staff. Themes from the interviews included: 1) existing resources and support services; 2) challenges, gaps in services, and barriers to care; 3) nuances of NA cancer care; and 4) opportunities for improved care and resources. Patients identified financial challenges to receiving cancer care including transportation, lodging, food insecurity, and utility expenses. Patients were willing to complete a FHS tool, but indicated this tool should be short and not intrusive of the patient’s financial information. Clinical staff described discomfort in discussing financial hardship with patients, primarily due to a lack of training and knowledge about resources to support patients. Having designated staff familiar with I/T/U systems was helpful, but perspectives differed regarding who should administer FHS. Conclusions We identified facilitators and barriers to implementing FHS for NA patients with cancer at both the patient and clinician levels. Findings suggest clear organizational structures and processes are needed for financial hardship to be addressed effectively.
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- 2024
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7. Characteristics of patient navigation programs in the Cancer Moonshot ACCSIS colorectal cancer screening initiative
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Coronado, Gloria D, Ferrari, Renée M, Barnes, Autumn, Castañeda, Sheila F, Cromo, Mark, Davis, Melinda M, Doescher, Mark P, English, Kevin, Hatcher, Jenna, Kim, Karen E, Kobrin, Sarah, Liebovitz, David, Mishra, Shiraz I, Nodora, Jesse N, Norton, Wynne E, Oliveri, Jill M, Reuland, Daniel S, Subramanian, Sujha, Thompson, Jamie H, and Paskett, Electra D
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Biomedical and Clinical Sciences ,Oncology and Carcinogenesis ,Cancer ,Digestive Diseases ,Prevention ,Health Services ,Clinical Research ,Colo-Rectal Cancer ,Humans ,Patient Navigation ,Early Detection of Cancer ,Colorectal Neoplasms ,Program Evaluation ,Mass Screening ,Oncology & Carcinogenesis ,Oncology and carcinogenesis - Abstract
BackgroundAlthough patient navigation has shown promise for increasing participation in colorectal cancer screening and follow-up, little evidence is available to guide implementation of patient navigation in clinical practice. We characterize 8 patient navigation programs being implemented as part of multi-component interventions of the National Cancer Institute's Cancer Moonshot Accelerating Colorectal Cancer Screening and Follow-Up Through Implementation Science (ACCSIS) initiative.MethodsWe developed a data collection template organized by ACCSIS framework domains. The template was populated by a representative from each of the 8 ACCSIS research projects. We report standardized descriptions of 1) the socio-ecological context in which the navigation program was being conducted, 2) navigation program characteristics, 3) activities undertaken to facilitate program implementation (eg, training), and 4) outcomes used in program evaluation.ResultsACCSIS patient navigation programs varied broadly in their socio-ecological context and settings, the populations they served, and how they were implemented in practice. Six research projects adapted and implemented evidence-based patient navigation programs; the remaining projects developed new programs. Five projects began navigation when patients were due for initial colorectal cancer screening; 3 projects began navigation later in the screening process, when patients were due for follow-up colonoscopy after an abnormal stool-test result. Seven projects relied on existing clinical staff to deliver the navigation; 1 hired a centralized research navigator. All project researchers plan to evaluate the effectiveness and implementation of their programs.ConclusionsOur detailed program descriptions may facilitate cross-project comparisons and guide future implementation and evaluation of patient navigation programs in clinical practice.
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- 2023
8. Tobacco and marijuana use during the COVID-19 pandemic lockdown among American Indians residing in California and Oklahoma
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Dang, Julie HT, Chen, Sixia, Hall, Spencer, Campbell, Janis E, Chen, Moon S, and Doescher, Mark P
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Health Services and Systems ,Health Sciences ,Substance Misuse ,Prevention ,Drug Abuse (NIDA only) ,Cannabinoid Research ,Coronaviruses Disparities and At-Risk Populations ,Tobacco Smoke and Health ,Tobacco ,Women's Health ,Health Disparities ,Behavioral and Social Science ,Rural Health ,Lung ,Emerging Infectious Diseases ,Minority Health ,Infectious Diseases ,American Indian or Alaska Native ,Coronaviruses ,Alcoholism ,Alcohol Use and Health ,Clinical Research ,Cancer ,Social Determinants of Health ,Cardiovascular ,Stroke ,Good Health and Well Being ,smoking American Indians ,tobacco use marijuana use ,COVID-19 ,American Indians ,marijuana use ,smoking ,tobacco use ,Clinical Sciences ,Public health - Abstract
IntroductionAmerican Indian (AI) people experience a disproportionate tobacco and marijuana burden which may have been exacerbated by the COVID-19 pandemic. Little is known about the tobacco and marijuana habits of American Indian individuals during the COVID-19 pandemic. The objective of this study is to examine tobacco and marijuana use as well as change in use during the COVID-19 pandemic among the American Indian community.MethodsThis cross-sectional study analyzes survey data from a convenience sample of American Indian individuals residing in California and Oklahoma and included adults with and without cancer that resided in both rural and urban areas (n=1068).ResultsDuring October 2020 - January 2021, 36.0% of participants reported current use of tobacco products, 9.9% reported current use of marijuana products, and 23.7% reported increased use of tobacco and/or marijuana in the past 30 days, with no difference between those with cancer and those without cancer. Tobacco use was associated with marital status, age, employment status, COVID-19 exposure, COVID-19 beliefs, and alcohol consumption. Marijuana use was associated with COVID-19 beliefs, alcohol consumption, and income level. Increased tobacco and/or marijuana use was associated with baseline use of those products. Nearly a quarter of participants reported increased use of tobacco and/or marijuana products during the COVID-19 pandemic.ConclusionsWe observed high rates of tobacco use during the COVID-19 pandemic, consistent with other studies. Research is needed to examine whether tobacco and marijuana use will decrease to pre-pandemic levels post-pandemic or if these behaviors will persist post-pandemic. Given these findings, there is a pressing need to increase access to evidence-based tobacco and marijuana treatment services in the AI population post COVID-19 pandemic.
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- 2023
9. Avoidance of medical care among American Indians with a history of cancer during the coronavirus pandemic
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Chen, Sixia, James, Shirley A, Hall, Spencer, Dang, Julie H, Campbell, Janis E, Chen, Moon S, and Doescher, Mark P
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Health Services and Systems ,Health Sciences ,Health Disparities ,Clinical Research ,Emerging Infectious Diseases ,Infectious Diseases ,Social Determinants of Health ,Coronaviruses ,Minority Health ,Coronaviruses Disparities and At-Risk Populations ,American Indian or Alaska Native ,Rural Health ,Cancer ,Good Health and Well Being ,Humans ,COVID-19 ,Cross-Sectional Studies ,Neoplasms ,Pandemics ,Patient Acceptance of Health Care ,coronavirus ,American Indian ,medical delays ,appointment cancelations ,cancer ,disparities ,Public Health and Health Services ,Health services and systems ,Public health - Abstract
ObjectivesAssess the percentage of cancer-related appointment delays, cancelations, and the unavailability of medications experienced by American Indian participants during the COVID-19 pandemic.MethodsThis cross-sectional survey study was completed between October 2020 and July 2021 by 360 individuals with cancer who lived in California and Oklahoma. Binary and multivariate logistic regression analysis was completed in SAS 9.4.ResultsDuring the initial Covid-19 pandemic, almost one-third (30%) of respondents delayed cancer-related appointments, 42% canceled cancer-related appointments, and one-quarter (24%) were unable to access prescription medications or over-the-counter medications (27%) due to COVID-19. People who underwent testing for COVID-19 were five times more likely to delay a medical appointment [adjusted odds ratio (aOR) = 5.3, 95% CI:2.4, 11.7] and people who followed three or more social distancing measures were more than six times more likely to cancel medical appointments (aOR:6.3, 95% CI:2.9, 13.9).ConclusionThis study identifies delays, cancelations, and medication inaccessibility people identifying as American Indian faced during the coronavirus pandemic. Disparities in healthcare delivery could contribute to increased morbidity and mortality rates of cancer.
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- 2023
10. Case report: Clinical, genetic and immunological characterization of a novel XK variant in a patient with McLeod syndrome
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Christine Anna Dambietz, Andrea Doescher, Michael Heming, Anja Schirmacher, Bernhard Schlüter, Andrea Schulte-Mecklenbeck, Christian Thomas, Heinz Wiendl, Gerd Meyer zu Hörste, and Sarah Wiethoff
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XK gene ,McLeod syndrome ,neuropathy ,myopathy ,Kell system ,neurogenetic disease ,Genetics ,QH426-470 - Abstract
Introduction: Pathogenic variants in the XK gene are associated with dysfunction or loss of XK protein leading to McLeod syndrome (MLS), a rare X-linked neuroacanthocytosis syndrome with multisystemic manifestation. Here we present clinical, genetic and immunological data on a patient originally admitted to our clinic for presumed post-COVID-19 syndrome, where thorough clinical work-up revealed a novel frameshift deletion in XK causal for the underlying phenotype. We additionally review the clinicogenetic spectrum of reported McLeod cases in the literature.Methods: We performed in-depth clinical characterization and flow cytometry of cerebrospinal fluid (CSF) in a patient where multi-gene panel sequencing identified a novel hemizygous frameshift deletion in XK. Additionally, Kell (K) and Cellano (k) antigen expression was analysed by Fluorescence-activated Cell Sorting (FACS). KEL gene expression was examined by RNA sequencing.Results: A novel hemizygous frameshift deletion in the XK gene resulting in premature termination of the amino acid chain was identified in a 46-year old male presenting with decrease in physical performance and persisting fatigue after COVID-19 infection. Examinations showed raised creatine kinase (CK) levels, neuropathy and clinical features of myopathy. FACS revealed the K-k+ blood type and reduced Cellano density. CSF flow cytometry showed elevation of activated T Cells.Conclusion: In-depth clinical, genetic, immunological and ribonucleic acid (RNA) expression data revealed axonal neuropathy, myopathy and raised levels of activated CSF-T-lymphocytes in a patient with a previously unpublished frameshift deletion in the XK gene.
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- 2024
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11. Multi-omics analysis of overexpressed tumor-associated proteins: gene expression, immunopeptide presentation, and antibody response in oropharyngeal squamous cell carcinoma, with a focus on cancer-testis antigens
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Tsima Abou Kors, Matthias Meier, Lena Mühlenbruch, Annika C. Betzler, Franziska Oliveri, Martin Bens, Jaya Thomas, Johann M. Kraus, Johannes Doescher, Adrian von Witzleben, Linda Hofmann, Jasmin Ezic, Diana Huber, Julian Benckendorff, Thomas F. E. Barth, Jens Greve, Patrick J. Schuler, Cornelia Brunner, Jonathan M. Blackburn, Thomas K. Hoffmann, Christian Ottensmeier, Hans A. Kestler, Hans-Georg Rammensee, Juliane S. Walz, and Simon Laban
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oropharyngeal squamous cell carcinoma (OPSCC) ,HLA ,cancer testis antigens (CTA) ,tumor-associated peptide (TAP) ,antibody response (AR) ,Immunologic diseases. Allergy ,RC581-607 - Abstract
IntroductionThe human leukocyte antigen complex (HLA) is essential for inducing specific immune responses to cancer by presenting tumor-associated peptides (TAP) to T cells. Overexpressed tumor associated antigens, mainly cancer-testis antigens (CTA), are outlined as essential targets for immunotherapy in oropharyngeal squamous cell carcinoma (OPSCC). This study assessed the degree to which presentation, gene expression, and antibody response (AR) of TAP, mainly CTA, are correlated in OPSCC patients to evaluate their potential as immunotherapy targets.Materials and methodsSnap-frozen tumor (NLigand/RNA=40), healthy mucosa (NRNA=6), and healthy tonsils (NLigand=5) samples were obtained. RNA-Seq was performed using Illumina HiSeq 2500/NovaSeq 6000 and whole exome sequencing (WES) utilizing NextSeq500. HLA ligands were isolated from tumor tissue using immunoaffinity purification, UHPLC, and analyzed by tandem MS. Antibodies were measured in serum (NAb=27) utilizing the KREX™ CT262 protein array. Data analysis focused on 312 proteins (KREX™ CT262 panel + overexpressed self-proteins).Results183 and 94 of HLA class I and II TAP were identified by comparative profiling with healthy tonsils. Genes from 26 TAP were overexpressed in tumors compared to healthy mucosa (LFC>1; FDR
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- 2024
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12. Tobacco and marijuana use during the COVID-19 pandemic lockdown among American Indians residing in California and Oklahoma
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Julie H. T. Dang, Sixia Chen, Spencer Hall, Janis E. Campbell, Moon S. Chen Jr.‡, and Mark P. Doescher‡
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smoking ,american indians ,tobacco use ,marijuana use ,covid-19 ,Diseases of the respiratory system ,RC705-779 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Introduction American Indian (AI) people experience a disproportionate tobacco and marijuana burden which may have been exacerbated by the COVID-19 pandemic. Little is known about the tobacco and marijuana habits of American Indian individuals during the COVID-19 pandemic. The objective of this study is to examine tobacco and marijuana use as well as change in use during the COVID-19 pandemic among the American Indian community. Methods This cross-sectional study analyzes survey data from a convenience sample of American Indian individuals residing in California and Oklahoma and included adults with and without cancer that resided in both rural and urban areas (n=1068). Results During October 2020 - January 2021, 36.0% of participants reported current use of tobacco products, 9.9% reported current use of marijuana products, and 23.7% reported increased use of tobacco and/or marijuana in the past 30 day with no difference between those with cancer and those without cancer. Tobacco use was associated with marital status, age, employment status, COVID-19 exposure, COVID-19 beliefs, and alcohol consumption. Marijuana use was associated with COVID-19 beliefs, alcohol consumption, and income level. Increased tobacco and/or marijuana use was associated with baseline use of those products. Nearly a quarter of participants reported increased use of tobacco and or marijuana products during the COVID-19 pandemic. Conclusions We observed high rates of tobacco use during the COVID-19 pandemic, consistent with other studies. Research is needed to examine whether tobacco and marijuana use will decrease to pre-pandemic levels post-pandemic or if these behaviors will persist post-pandemic. Given these findings, there is a pressing need to increase access to evidence-based tobacco and marijuana treatment services in the AI population post COVID-19 pandemic.
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- 2023
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13. Immune checkpoint expression on tumor-infiltrating lymphocytes (TIL) is dependent on HPV status in oropharyngeal carcinoma (OPSCC) – A single-cell RNA sequencing analysis
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von Witzleben, Adrian, Grages, Ayla, Thomas, Jaya, Ezić, Jasmin, Brunner, Cornelia, Schuler, Patrick J., Kraus, Johann M., Kestler, Hans A., Vahl, Julius M., Doescher, Johannes, King, Emma V., Ottensmeier, Christian H., Hoffmann, Thomas K., and Laban, Simon
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- 2024
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14. A pilot randomized clinical trial of a smartphone-based application to support at-home PSA screening and culturally tailored prostate cancer education for African American men: A study protocol
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Neil, Jordan, Mao, Bingjing, Shao, Ruosi, Motolani E. Ogunsanya, Frank-Pearce, Summer, Businelle, Michael, Cookson, Michael, Stratton, Kelly, Doescher, Mark, Pharr, Stephanie, Moise, Valerie, Fleshman, Brianna, Fronheiser, Jack, Estrada, Kimberly, Flores, Iván, Bradley, David, Kendrick, Ashley, and Alexander, Adam C.
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- 2024
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15. DNA Reference Reagents for Genotyping RH Variants
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Arnoni, Carine Prisco, Latini, Flavia, da Silva, Flavia Sant’Anna, Vendrame, Tatiane Aparecida, Hyland, Catherine, Millard, Glenda, Liew, Yew-Wah, Teramura, Gayle, Harris, Samantha, Nakaya Fletcher, Shelley, Peyrard, Thierry, Poyot, Thomas, Martin-Blanc, Stephanie, Ochoa, Gorka, Westhoff, Connie, Vege, Sunitha, Denomme, Gregory A., Stef, Marianne A., Castilho, Lilian, dos Santos, Tamires Delfino, Piefer, Cindy, Bensing, Kathleen, Schanen, Michael, Scholz, Sabine, König, Sabrina, Bein, Gregor, Roeder, Lida, Sachs, Ulrich J., Wittig, Michael, Steiert, Tim A., Franke, Andre, Henny, Christine, Tani, Yoshihiko, Tanaka, Mitsunobu, Flegel, Willy A., Srivastava, Kshitij, Conceicao, Michelle, Resto, Claribel, Gannett, Michael Sel, Doescher, Andrea, Bub, Carolina Bonet, Aravechia, Maria Giselda, Costa, Thiago Henrique, Sirianni, Marilia Fernandes Mascarenhas, Santos, Leandro Dinalli, Sippert, Emilia, Volkova, Evgeniya, Rippee-Brooks, Meagan, Lee, Christine, Araojo, Richardae, Illoh, Orieji, Liu, Zhugong, and Rios, Maria
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- 2024
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16. Molecular disparities in colorectal cancers of White Americans, Alabama African Americans, and Oklahoma American Indians
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Yamada, Hiroshi Y., Xu, Chao, Jones, Kenneth L., O’Neill, Philip H., Venkateshwar, Madka, Chiliveru, Srikanth, Kim, Hyung-Gyoon, Doescher, Mark, Morris, Katherine T., Manne, Upender, and Rao, Chinthalapally V.
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- 2023
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17. Rural cancer disparities from Oklahoma cancer and vital records registries 2016–2020
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Campbell, Janis E., Sambo, Ayesha B., Hunsucker, Lauri A., Pharr, Stephanie F., and Doescher, Mark P.
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- 2024
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18. The HLA ligandome of oropharyngeal squamous cell carcinomas reveals shared tumour-exclusive peptides for semi-personalised vaccination
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Mühlenbruch, Lena, Abou-Kors, Tsima, Dubbelaar, Marissa L., Bichmann, Leon, Kohlbacher, Oliver, Bens, Martin, Thomas, Jaya, Ezić, Jasmin, Kraus, Johann M., Kestler, Hans A., von Witzleben, Adrian, Mytilineos, Joannis, Fürst, Daniel, Engelhardt, Daphne, Doescher, Johannes, Greve, Jens, Schuler, Patrick J., Theodoraki, Marie-Nicole, Brunner, Cornelia, Hoffmann, Thomas K., Rammensee, Hans-Georg, Walz, Juliane S., and Laban, Simon
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- 2023
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19. Molecular disparities in colorectal cancers of White Americans, Alabama African Americans, and Oklahoma American Indians
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Hiroshi Y. Yamada, Chao Xu, Kenneth L. Jones, Philip H. O’Neill, Madka Venkateshwar, Srikanth Chiliveru, Hyung-Gyoon Kim, Mark Doescher, Katherine T. Morris, Upender Manne, and Chinthalapally V. Rao
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract In the US, the majority of cancer samples analyzed are from white people, leading to biases in racial and ethnic treatment outcomes. Colorectal cancer (CRC) incidence and mortality rates are high in Alabama African Americans (AAs) and Oklahoma American Indians (AIs). We hypothesized that differences between racial groups may partially explain these disparities. Thus, we compared transcriptomic profiles of CRCs of Alabama AAs, Oklahoma AIs, and white people from both states. Compared to CRCs of white people, CRCs of AAs showed (a) higher expression of cytokines and vesicle trafficking toward modulated antitumor-immune activity, and (b) lower expression of the ID1/BMP/SMAD axis, IL22RA1, APOBEC3, and Mucins; and AIs had (c) higher expression of PTGS2/COX2 (an NSAID target/pro-oncogenic inflammation) and splicing regulators, and (d) lower tumor suppressor activities (e.g., TOB2, PCGF2, BAP1). Therefore, targeting strategies designed for white CRC patients may be less effective for AAs/AIs. These findings illustrate needs to develop optimized interventions to overcome racial CRC disparities.
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- 2023
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20. CATCH-UP vaccines: protocol for a randomized controlled trial using the multiphase optimization strategy (MOST) framework to evaluate education interventions to increase COVID-19 vaccine uptake in Oklahoma
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Amanda E. Janitz, Jordan M. Neil, Laura A. Bray, Lori L. Jervis, Laura Ross, Janis E. Campbell, Mark P. Doescher, Paul G. Spicer, Mary L. Williams, April K. Lopez, Conce A. Uribe-Frias, Sixia Chen, Judith A. James, and Timothy M. VanWagoner
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Multiphase optimization strategy ,COVID-19 ,Vaccine hesitancy ,Underserved communities ,Rural health disparities ,Community-engaged intervention ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Oklahoma’s cumulative COVID-19 incidence is higher in rural than urban counties and higher than the overall US incidence. Furthermore, fewer Oklahomans have received at least one COVID-19 vaccine compared to the US average. Our goal is to conduct a randomized controlled trial using the multiphase optimization strategy (MOST) to test multiple educational interventions to improve uptake of COVID-19 vaccination among underserved populations in Oklahoma. Methods Our study uses the preparation and optimization phases of the MOST framework. We conduct focus groups among community partners and community members previously involved in hosting COVID-19 testing events to inform intervention design (preparation). In a randomized clinical trial, we test three interventions to improve vaccination uptake: (1) process improvement (text messages); (2) barrier elicitation and reduction (electronic survey with tailored questions/prompts); and (2) teachable moment messaging (motivational interviewing) in a three-factor fully crossed factorial design (optimization). Discussion Because of Oklahoma’s higher COVID-19 impact and lower vaccine uptake, identifying community-driven interventions is critical to address vaccine hesitancy. The MOST framework provides an innovative and timely opportunity to efficiently evaluate multiple educational interventions in a single study. Trial Registration ClinicalTrials.gov: NCT05236270, First Posted: February 11, 2022, Last Update Posted: August 31, 2022.
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- 2023
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21. Pathological alterations in the expression status of rotator cuff tendon matrix components in hyperlipidemia
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Fang, William, Sekhon, Seerat, Teramoto, Darren, Fung, Cameron, La, Vy, Duong, Cindy, Doescher, Christian, Thai, An, Thankam, Finosh G., and Agrawal, Devendra K.
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- 2022
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22. Avoidance of medical care among American Indians with a history of cancer during the coronavirus pandemic
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Sixia Chen, Shirley A. James, Spencer Hall, Julie H. Dang, Janis E. Campbell, Moon S. Chen, and Mark P. Doescher
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COVID-19 ,coronavirus ,American Indian ,medical delays ,appointment cancelations ,cancer ,Public aspects of medicine ,RA1-1270 - Abstract
ObjectivesAssess the percentage of cancer-related appointment delays, cancelations, and the unavailability of medications experienced by American Indian participants during the COVID-19 pandemic.MethodsThis cross-sectional survey study was completed between October 2020 and July 2021 by 360 individuals with cancer who lived in California and Oklahoma. Binary and multivariate logistic regression analysis was completed in SAS 9.4.ResultsDuring the initial Covid-19 pandemic, almost one-third (30%) of respondents delayed cancer-related appointments, 42% canceled cancer-related appointments, and one-quarter (24%) were unable to access prescription medications or over-the-counter medications (27%) due to COVID-19. People who underwent testing for COVID-19 were five times more likely to delay a medical appointment [adjusted odds ratio (aOR) = 5.3, 95% CI:2.4, 11.7] and people who followed three or more social distancing measures were more than six times more likely to cancel medical appointments (aOR:6.3, 95% CI:2.9, 13.9).ConclusionThis study identifies delays, cancelations, and medication inaccessibility people identifying as American Indian faced during the coronavirus pandemic. Disparities in healthcare delivery could contribute to increased morbidity and mortality rates of cancer.
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- 2023
- Full Text
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23. Analysis of Geographic Accessibility of Breast, Lung, and Colorectal Cancer Screening Centers Among American Indian and Alaskan Native Tribes
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Peña, Miguel A., Sudarshan, Anirudh, Muns, Claudia M., Narayan, Anand K., González, Carlos, Neil, Jordan, Rhoades, Dorothy A., Doescher, Mark P., and Flores, Efrén J.
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- 2023
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24. 4MOST: Project overview and information for the First Call for Proposals
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de Jong, R. S., Agertz, O., Berbel, A. Agudo, Aird, J., Alexander, D. A., Amarsi, A., Anders, F., Andrae, R., Ansarinejad, B., Ansorge, W., Antilogus, P., Anwand-Heerwart, H., Arentsen, A., Arnadottir, A., Asplund, M., Auger, M., Azais, N., Baade, D., Baker, G., Baker, S., Balbinot, E., Baldry, I. K., Banerji, M., Barden, S., Barklem, P., Barthélémy-Mazot, E., Battistini, C., Bauer, S., Bell, C. P. M., Bellido-Tirado, O., Bellstedt, S., Belokurov, V., Bensby, T., Bergemann, M., Bestenlehner, J. M., Bielby, R., Bilicki, M., Blake, C., Bland-Hawthorn, J., Boeche, C., Boland, W., Boller, T., Bongard, S., Bongiorno, A., Bonifacio, P., Boudon, D., Brooks, D., Brown, M. J. I., Brown, R., Brüggen, M., Brynnel, J., Brzeski, J., Buchert, T., Buschkamp, P., Caffau, E., Caillier, P., Carrick, J., Casagrande, L., Case, S., Casey, A., Cesarini, I., Cescutti, G., Chapuis, D., Chiappini, C., Childress, M., Christlieb, N., Church, R., Cioni, M. -R. L., Cluver, M., Colless, M., Collett, T., Comparat, J., Cooper, A., Couch, W., Courbin, F., Croom, S., Croton, D., Daguisé, E., Dalton, G., Davies, L. J. M., Davis, T., de Laverny, P., Deason, A., Dionies, F., Disseau, K., Doel, P., Döscher, D., Driver, S. P., Dwelly, T., Eckert, D., Edge, A., Edvardsson, B., Youssoufi, D. El, Elhaddad, A., Enke, H., Erfanianfar, G., Farrell, T., Fechner, T., Feiz, C., Feltzing, S., Ferreras, I., Feuerstein, D., Feuillet, D., Finoguenov, A., Ford, D., Fotopoulou, S., Fouesneau, M., Frenk, C., Frey, S., Gaessler, W., Geier, S., Fusillo, N. Gentile, Gerhard, O., Giannantonio, T., Giannone, D., Gibson, B., Gillingham, P., González-Fernández, C., Gonzalez-Solares, E., Gottloeber, S., Gould, A., Grebel, E. K., Gueguen, A., Guiglion, G., Haehnelt, M., Hahn, T., Hansen, C. J., Hartman, H., Hauptner, K., Hawkins, K., Haynes, D., Haynes, R., Heiter, U., Helmi, A., Aguayo, C. Hernandez, Hewett, P., Hinton, S., Hobbs, D., Hoenig, S., Hofman, D., Hook, I., Hopgood, J., Hopkins, A., Hourihane, A., Howes, L., Howlett, C., Huet, T., Irwin, M., Iwert, O., Jablonka, P., Jahn, T., Jahnke, K., Jarno, A., Jin, S., Jofre, P., Johl, D., Jones, D., Jönsson, H., Jordan, C., Karovicova, I., Khalatyan, A., Kelz, A., Kennicutt, R., King, D., Kitaura, F., Klar, J., Klauser, U., Kneib, J., Koch, A., Koposov, S., Kordopatis, G., Korn, A., Kosmalski, J., Kotak, R., Kovalev, M., Kreckel, K., Kripak, Y., Krumpe, M., Kuijken, K., Kunder, A., Kushniruk, I., Lam, M. I, Lamer, G., Laurent, F., Lawrence, J., Lehmitz, M., Lemasle, B., Lewis, J., Li, B., Lidman, C., Lind, K., Liske, J., Lizon, J. -L., Loveday, J., Ludwig, H. -G., McDermid, R. M., Maguire, K., Mainieri, V., Mali, S., Mandel, H., Mandel, K., Mannering, L., Martell, S., Delgado, D. Martinez, Matijevic, G., McGregor, H., McMahon, R., McMillan, P., Mena, O., Merloni, A., Meyer, M. J., Michel, C., Micheva, G., Migniau, J. -E., Minchev, I., Monari, G., Muller, R., Murphy, D., Muthukrishna, D., Nandra, K., Navarro, R., Ness, M., Nichani, V., Nichol, R., Nicklas, H., Niederhofer, F., Norberg, P., Obreschkow, D., Oliver, S., Owers, M., Pai, N., Pankratow, S., Parkinson, D., Parry, I., Paschke, J., Paterson, R., Pecontal, A., Phillips, D., Pillepich, A., Pinard, L., Pirard, J., Piskunov, N., Plank, V., Plüschke, D., Pons, E., Popesso, P., Power, C., Pragt, J., Pramskiy, A., Pryer, D., Quattri, M., Queiroz, A. B. de Andrade, Quirrenbach, A., Rahurkar, S., Raichoor, A., Ramstedt, S., Rau, A., Recio-Blanco, A., Reiss, R., Renaud, F., Revaz, Y., Rhode, P., Richard, J., Richter, A. D., Rix, H. -W., Robotham, A. S. G., Roelfsema, R., Romaniello, M., Rosario, D., Rothmaier, F., Roukema, B., Ruchti, G., Rupprecht, G., Rybizki, J., Ryde, N., Saar, A., Sadler, E., Sahlén, M., Salvato, M., Sassolas, B., Saunders, W., Saviauk, A., Sbordone, L., Schmidt, T., Schnurr, O., Scholz, R. -D., Schwope, A., Seifert, W., Shanks, T., Sheinis, A., Sivov, T., Skúladóttir, Á., Smartt, S., Smedley, S., Smith, G., Smith, R., Sorce, J., Spitler, L., Starkenburg, E., Steinmetz, M., Stilz, I., Storm, J., Sullivan, M., Sutherland, W., Swann, E., Tamone, A., Taylor, E. N., Teillon, J., Tempel, E., ter Horst, R., Thi, W. -F., Tolstoy, E., Trager, S., Traven, G., Tremblay, P. -E., Tresse, L., Valentini, M., van de Weygaert, R., Ancker, M. van den, Veljanoski, J., Venkatesan, S., Wagner, L., Wagner, K., Walcher, C. J., Waller, L., Walton, N., Wang, L., Winkler, R., Wisotzki, L., Worley, C. C., Worseck, G., Xiang, M., Xu, W., Yong, D., Zhao, C., Zheng, J., Zscheyge, F., and Zucker, D.
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Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
We introduce the 4-metre Multi-Object Spectroscopic Telescope (4MOST), a new high-multiplex, wide-field spectroscopic survey facility under development for the four-metre-class Visible and Infrared Survey Telescope for Astronomy (VISTA) at Paranal. Its key specifications are: a large field of view (FoV) of 4.2 square degrees and a high multiplex capability, with 1624 fibres feeding two low-resolution spectrographs ($R = \lambda/\Delta\lambda \sim 6500$), and 812 fibres transferring light to the high-resolution spectrograph ($R \sim 20\,000$). After a description of the instrument and its expected performance, a short overview is given of its operational scheme and planned 4MOST Consortium science; these aspects are covered in more detail in other articles in this edition of The Messenger. Finally, the processes, schedules, and policies concerning the selection of ESO Community Surveys are presented, commencing with a singular opportunity to submit Letters of Intent for Public Surveys during the first five years of 4MOST operations., Comment: Part of the 4MOST issue of The Messenger, published in preparation of 4MOST Community Workshop, see http://www.eso.org/sci/meetings/2019/4MOST.html
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- 2019
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25. Impact of weight loss on treatment interruption and unplanned hospital admission in head and neck cancer patients undergoing curative (chemo)-radiotherapy in Hong Kong
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Choi, Ying-Chu, Chan, Po-Chung, Cheung, Ka-Wai Alice, Huang, Jia-Jie, Wong, Kwok-Leung Aray, Doescher, Johannes, and Lam, Tai-Chung
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- 2023
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26. Changes in alcohol consumption and binge drinking during the COVID-19 pandemic among American Indians residing in California and Oklahoma
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James, Shirley A., primary, Chen, Sixia, additional, Dang, Julie HT, additional, Hall, Spencer, additional, Campbell, Janis E., additional, Chen, Moon S., additional, and Doescher, Mark P., additional
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- 2024
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27. Association Between COVID-19 and Planned and Postponed Cancer Screenings Among American Indian Adults Residing in California and Oklahoma, March–December 2020
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Dang, Julie H.T., primary, Chen, Sixia, additional, Hall, Spencer, additional, Campbell, Janis E., additional, Chen, Moon S., additional, and Doescher, Mark P., additional
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- 2024
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28. DNA Reference Reagents for Genotyping RH Variants
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Sippert, Emilia, primary, Volkova, Evgeniya, additional, Rippee-Brooks, Meagan, additional, Denomme, Gregory A., additional, Flegel, Willy A., additional, Lee, Christine, additional, Araojo, Richardae, additional, Illoh, Orieji, additional, Liu, Zhugong, additional, Rios, Maria, additional, Arnoni, Carine Prisco, additional, Latini, Flavia, additional, da Silva, Flavia Sant’Anna, additional, Vendrame, Tatiane Aparecida, additional, Hyland, Catherine, additional, Millard, Glenda, additional, Liew, Yew-Wah, additional, Teramura, Gayle, additional, Harris, Samantha, additional, Nakaya Fletcher, Shelley, additional, Peyrard, Thierry, additional, Poyot, Thomas, additional, Martin-Blanc, Stephanie, additional, Ochoa, Gorka, additional, Westhoff, Connie, additional, Vege, Sunitha, additional, Stef, Marianne A., additional, Castilho, Lilian, additional, dos Santos, Tamires Delfino, additional, Piefer, Cindy, additional, Bensing, Kathleen, additional, Schanen, Michael, additional, Scholz, Sabine, additional, König, Sabrina, additional, Bein, Gregor, additional, Roeder, Lida, additional, Sachs, Ulrich J., additional, Wittig, Michael, additional, Steiert, Tim A., additional, Franke, Andre, additional, Henny, Christine, additional, Tani, Yoshihiko, additional, Tanaka, Mitsunobu, additional, Srivastava, Kshitij, additional, Conceicao, Michelle, additional, Resto, Claribel, additional, Gannett, Michael Sel, additional, Doescher, Andrea, additional, Bub, Carolina Bonet, additional, Aravechia, Maria Giselda, additional, Costa, Thiago Henrique, additional, Sirianni, Marilia Fernandes Mascarenhas, additional, and Santos, Leandro Dinalli, additional
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- 2024
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29. The quiet crossing of ocean tipping points
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Heinze, Christoph, Blenckner, Thorsten, Martins, Helena, Rusiecka, Dagmara, Döscher, Ralf, Gehlen, Marion, Gruber, Nicolas, Holland, Elisabeth, Hov, Øystein, Joos, Fortunat, Matthews, John Brian Robin, Rødven, Rolf, and Wilson, Simon
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- 2021
30. Contemporary treatment and outcome of sinonasal undifferentiated carcinoma: A meta‐analysis.
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Burggraf, Manuela, Schiele, Stefan, Thölken, Rubens, López, Francisco José Farfán, Elawany, Noran, Zenk, Johannes, and Doescher, Johannes
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INDUCTION chemotherapy ,RANDOM effects model ,CARCINOMA ,CANCER chemotherapy ,OVERALL survival - Abstract
Induction chemotherapy (IC) recently gained importance for treatment of sinonasal undifferentiated carcinoma (SNUC). We analyzed our SNUC cases and performed a meta‐analysis with focus on survival‐rates stratified by treatment. SNUC cases at our institution were retrospectively evaluated. A systematic literature review was conducted to analyze treatment and outcome of SNUC. To calculate 5‐year and 2‐year overall survival (OS), individual patient data (IPD) were analyzed using Kaplan–Meier estimators and Cox proportional hazard regression to identify associations between types of therapy and survival. A random effects model for pooled estimates of 5‐year survival was applied to studies without IPD data. Five‐year OS of our SNUC cases (n = 9) was 44.4%. The IPD analysis (n = 192) showed a significantly better 5‐year OS for patients who received induction chemotherapy (72.6% vs. 44.5%). The pooled 5‐year OS of 13 studies identified in the literature search was 43.8%. IC should be considered in every patient diagnosed with SNUC. [ABSTRACT FROM AUTHOR]
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- 2024
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31. Case report: Clinical, genetic and immunological characterization of a novel XK variant in a patient with McLeod syndrome.
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Dambietz, Christine Anna, Doescher, Andrea, Heming, Michael, Schirmacher, Anja, Schlüter, Bernhard, Schulte-Mecklenbeck, Andrea, Thomas, Christian, Wiendl, Heinz, Meyer zu Hörste, Gerd, and Wiethoff, Sarah
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FRAMESHIFT mutation ,GENE expression ,BLOOD groups ,GENETIC variation ,RNA ,CEREBROSPINAL fluid examination ,X chromosome - Abstract
Introduction: Pathogenic variants in the XK gene are associated with dysfunction or loss of XK protein leading to McLeod syndrome (MLS), a rare X-linked neuroacanthocytosis syndrome with multisystemic manifestation. Here we present clinical, genetic and immunological data on a patient originally admitted to our clinic for presumed post-COVID-19 syndrome, where thorough clinical work-up revealed a novel frameshift deletion in XK causal for the underlying phenotype. We additionally review the clinicogenetic spectrum of reported McLeod cases in the literature. Methods: We performed in-depth clinical characterization and flow cytometry of cerebrospinal fluid (CSF) in a patient where multi-gene panel sequencing identified a novel hemizygous frameshift deletion in XK. Additionally, Kell (K) and Cellano (k) antigen expression was analysed by Fluorescence-activated Cell Sorting (FACS). KEL gene expression was examined by RNA sequencing. Results: A novel hemizygous frameshift deletion in the XK gene resulting in premature termination of the amino acid chain was identified in a 46-year old male presenting with decrease in physical performance and persisting fatigue after COVID-19 infection. Examinations showed raised creatine kinase (CK) levels, neuropathy and clinical features of myopathy. FACS revealed the K-k+ blood type and reduced Cellano density. CSF flow cytometry showed elevation of activated T Cells. Conclusion: In-depth clinical, genetic, immunological and ribonucleic acid (RNA) expression data revealed axonal neuropathy, myopathy and raised levels of activated CSF-T-lymphocytes in a patient with a previously unpublished frameshift deletion in the XK gene. [ABSTRACT FROM AUTHOR]
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- 2024
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32. Use of Potentially Reduced Exposure Tobacco Products Among American Indian Smokeless Tobacco Users : Associations With Cessation Behaviors and Cotinine Levels
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Comiford, Ashley L., Rhoades, Dorothy A., Dvorak, Justin D., Ding, Kai, Mehta, Toral, Spicer, Paul, Wagener, Theodore, and Doescher, Mark P.
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- 2020
33. Influence of travel burden on tumor classification and survival of head and neck cancer patients
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Vahl, J. M., von Witzleben, A., Welke, C., Doescher, J., Theodoraki, M. N., Brand, M., Schuler, P. J., Greve, J., Hoffmann, T. K., and Laban, S.
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- 2021
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34. Diagnostik und Therapie maligner Nasentumoren
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Doescher, J., Ott, S., Kövi, J., Steinacker, J., Hoffmann, T. K., and Sommer, F.
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- 2021
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35. Identifying Priorities and Strategies for Improving Colorectal Cancer Screening in Tribal Clinics
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Jessica Blanchard, Dorothy Rhoades, Zsolt Nagykaldi, Janis Campbell, Tamela Cannady, Michelle Hopkins, Michelle Gibson, Hazel Lonewolf, and Mark Doescher
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background Colorectal cancer (CRC) is the 3 rd most frequently diagnosed cancer and the 2 nd leading cause of cancer death in the United States (US), and incidence and mortality rates in Oklahoma are higher for many American Indian (AI) populations than other populations. The AI CRC Screening Consortium addresses major regional CRC screening disparities among AIs with shared objectives to increase CRC screening delivery and uptake in AIs aged 50 to 75 years at average risk for CRC and to assess the effectiveness of implementations of the interventions. This manuscript reports environmental scan findings related to current practices and multi-stakeholder experiences with CRC screening in two Oklahoma Indian health care systems. Method We conducted a mixed methods environmental scan across five clinical sites and with multiple stakeholders to determine the scope and scale of colorectal cancer screening in two separate AI health care delivery systems in Oklahoma. Data collection consisted of a mixture of individual interviews and group discussions at an urban site, and four clinical care sites within a tribal health system. Results Sixty-two individuals completed interviews. Data from these interviews will inform the development of evidence-based intervention strategies to increase provider delivery, community access to, and community priority for CRC screening in diverse AI health care delivery systems. Conversations with patients, providers, and clinical leadership point to individual and system-level opportunities for improvement at each site, shaped in part by differences in the delivery of services, structure of the health care system, and capacity to implement new intervention strategies. The thematic areas most central to the process of evidenced-based intervention development included: current practices, needs and recommendations, and CRC site priorities. Conclusion Environmental scan data indicated clear opportunities for individual and system-level interventions to enhance CRC screening and was critical for understanding readiness for EBI implementation at each site.
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- 2022
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36. Perceptions of Smoking and Vaping on Weight Control Among Adult American Indians Who Smoke
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Rhoades, Dorothy A., Comiford, Ashley L., Dvorak, Justin D., Ding, Kai, Hopkins, Michelle, Spicer, Paul, Wagener, Theodore L., and Doescher, Mark P.
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- 2019
37. PEPSI: The high-resolution echelle spectrograph and polarimeter for the Large Binocular Telescope
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Strassmeier, K. G., Ilyin, I., Järvinen, A., Weber, M., Woche, M., Barnes, S. I., Bauer, S. -M., Beckert, E., Bittner, W., Bredthauer, R., Carroll, T. A., Denker, C., Dionies, F., DiVarano, I., Döscher, D., Fechner, T., Feuerstein, D., Granzer, T., Hahn, T., Harnisch, G., Hofmann, A., Lesser, M., Paschke, J., Pankratow, S., Plank, V., Plüschke, D., Popow, E., Sablowski, D., and Storm, J.
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Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Solar and Stellar Astrophysics - Abstract
PEPSI is the bench-mounted, two-arm, fibre-fed and stabilized Potsdam Echelle Polarimetric and Spectroscopic Instrument for the 2x8.4 m Large Binocular Telescope (LBT). Three spectral resolutions of either 43 000, 120 000 or 270 000 can cover the entire optical/red wavelength range from 383 to 907 nm in three exposures. Two 10.3kx10.3k CCDs with 9-{\mu}m pixels and peak quantum efficiencies of 96 % record a total of 92 echelle orders. We introduce a new variant of a wave-guide image slicer with 3, 5, and 7 slices and peak efficiencies between 96 %. A total of six cross dispersers cover the six wavelength settings of the spectrograph, two of them always simultaneously. These are made of a VPH-grating sandwiched by two prisms. The peak efficiency of the system, including the telescope, is 15% at 650 nm, and still 11% and 10% at 390 nm and 900 nm, respectively. In combination with the 110 m2 light-collecting capability of the LBT, we expect a limiting magnitude of 20th mag in V in the low-resolution mode. The R=120 000 mode can also be used with two, dual-beam Stokes IQUV polarimeters. The 270 000-mode is made possible with the 7-slice image slicer and a 100- {\mu}m fibre through a projected sky aperture of 0.74", comparable to the median seeing of the LBT site. The 43000-mode with 12-pixel sampling per resolution element is our bad seeing or faint-object mode. Any of the three resolution modes can either be used with sky fibers for simultaneous sky exposures or with light from a stabilized Fabry-Perot etalon for ultra-precise radial velocities. CCD-image processing is performed with the dedicated data-reduction and analysis package PEPSI-S4S. A solar feed makes use of PEPSI during day time and a 500-m feed from the 1.8 m VATT can be used when the LBT is busy otherwise. In this paper, we present the basic instrument design, its realization, and its characteristics.
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- 2015
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38. Tumorbiologie des Oropharynxkarzinoms
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Laban, S., Brand, M, Ezić, J., Doescher, J., Völkel, G., Kestler, H. A., Brunner, C., and Hoffmann, T. K.
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- 2021
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39. Multi-omics analysis of overexpressed tumor-associated proteins: gene expression, immunopeptide presentation, and antibody response in oropharyngeal squamous cell carcinoma, with a focus on cancer-testis antigens.
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Kors, Tsima Abou, Meier, Matthias, Mühlenbruch, Lena, Betzler, Annika C., Oliveri, Franziska, Bens, Martin, Thomas, Jaya, Kraus, Johann M., Doescher, Johannes, von Witzleben, Adrian, Hofmann, Linda, Ezic, Jasmin, Huber, Diana, Benckendorff, Julian, Barth, Thomas F. E., Greve, Jens, Schuler, Patrick J., Brunner, Cornelia, Blackburn, Jonathan M., and Hoffmann, Thomas K.
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TUMOR antigens ,HLA histocompatibility antigens ,LIGANDS (Biochemistry) ,SQUAMOUS cell carcinoma ,TESTICULAR cancer - Abstract
Introduction: The human leukocyte antigen complex (HLA) is essential for inducing specific immune responses to cancer by presenting tumor-associated peptides (TAP) to T cells. Overexpressed tumor associated antigens, mainly cancer-testis antigens (CTA), are outlined as essential targets for immunotherapy in oropharyngeal squamous cell carcinoma (OPSCC). This study assessed the degree to which presentation, gene expression, and antibody response (AR) of TAP, mainly CTA, are correlated in OPSCC patients to evaluate their potential as immunotherapy targets. Materials and methods: Snap-frozen tumor (N
Ligand/RNA =40), healthy mucosa (NRNA =6), and healthy tonsils (NLigand =5) samples were obtained. RNA-Seq was performed using Illumina HiSeq 2500/NovaSeq 6000 and whole exome sequencing (WES) utilizing NextSeq500. HLA ligands were isolated from tumor tissue using immunoaffinity purification, UHPLC, and analyzed by tandem MS. Antibodies were measured in serum (NAb =27) utilizing the KREX™ CT262 protein array. Data analysis focused on 312 proteins (KREX™ CT262 panel + overexpressed self-proteins). Results: 183 and 94 of HLA class I and II TAP were identified by comparative profiling with healthy tonsils. Genes from 26 TAP were overexpressed in tumors compared to healthy mucosa (LFC>1; FDR<0.05). Low concordance (r=0.25; p<0.0001) was found between upregulated mRNA and class I TAP. The specific mode of correlation of TAP was found to be dependent on clinical parameters. A lack of correlation was observed both between mRNA and class II TAP, as well as between class II tumor-unique TAP (TAP-U) presentation and antibody response (AR) levels. Discussion: This study demonstrates that focusing exclusively on gene transcript levels fails to capture the full extent of TAP presentation in OPSCC. Furthermore, our findings reveal that although CTA are presented at relatively low levels, a few CTA TAP-U show potential as targets for immunotherapy. [ABSTRACT FROM AUTHOR]- Published
- 2024
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40. Changes in Gene Expression Patterns in the Tumor Microenvironment of Head and Neck Squamous Cell Carcinoma Under Chemoradiotherapy Depend on Response
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Johannes Doescher, Adrian von Witzleben, Konstantinos Boukas, Stephanie E. Weissinger, Gareth J. Thomas, Simon Laban, Jaya Thomas, Thomas K. Hoffmann, and Christian H. Ottensmeier
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head and neck squamous cell carcinoma ,chemoradiotherapy ,tumor microenvironment ,tissue resident memory T cells ,gene set enrichment ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Chemoradiotherapy (CRT) is a standard treatment for advanced head and neck squamous cell carcinoma (HNSCC). Unfortunately, not all patients respond to this therapy and require further treatment, either salvage surgery or palliative therapy. The addition of immunotherapy to CRT is currently being investigated and early results describe a mixed response. Therefore, it is important to understand the impact of CRT on the tumor microenvironment (TME) to be able to interpret the results of the clinical trials. Paired biopsies from 30 HNSCC patients were collected before and three months after completion of primary CRT and interrogated for the expression of 1392 immune- and cancer-related genes. There was a relevant difference in the number of differentially expressed genes between the total cohort and patients with residual disease. Genes involved in T cell activation showed significantly reduced expression in these tumors after therapy. Furthermore, gene enrichment for several T cell subsets confirmed this observation. The analysis of tissue resident memory T cells (TRM) did not show a clear association with impaired response to therapy. CRT seems to lead to a loss of T cells in patients with incomplete response that needs to be reversed. It is not clear whether the addition of anti-PD-1 antibodies alone to CRT can prevent treatment failure, as no upregulation of the targets was measurable in the TME.
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- 2022
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41. Linking the Cherokee Nation Cancer Registry With Electronic Medical Records: A Tribal-Academic Center Partnership
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Janitz, Amanda E., Martinez, Sydney A., Campbell, Janis E., Williams, Mary L., Buckskin, Stefanie, Armstrong, Christopher, Wickliffe, Travis, Anderson, Amber S., Doescher, Mark P., and Khan, Sohail
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- 2022
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42. Das Tumormikromilieu bei Speicheldrüsenkarzinomen – mögliche Konsequenzen für neue Therapiekonzepte
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Meyer, M. F., Arolt, C., Kansy, B. A., Doescher, J., Quaas, A., Beutner, D., Lang, S., and Klußmann, J. P.
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- 2020
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43. Nurses Filling the Gap.
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Doescher, Terry
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NURSES ,EVIDENCE-based nursing ,LEADERS ,MEDICAL quality control ,MEDICAL care ,HEALTH policy ,NURSING ,EVALUATION of medical care ,NURSING interventions ,PATIENT-centered care ,CLINICAL competence ,CONTINUING education ,QUALITY assurance - Abstract
A gap analysis can be a valuable tool to identify and understand nursing practice deficiencies or gaps. Failure to find and fill gaps in skills, practices, or knowledge can affect patient outcomes. Nurses, nurse leaders, and health care providers can use a gap analysis to identify practice discrepancies that can affect patient care and outcomes. Conducting a gap analysis can guide the nurse to determine the best evidence-based practice solution for an issue or problem. [J Contin Educ Nurs. 2024;55(10):469–471.] [ABSTRACT FROM AUTHOR]
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- 2024
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44. Age-related changes in T lymphocytes of patients with head and neck squamous cell carcinoma
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S. S. Jeske, P. J. Schuler, J. Doescher, M. N. Theodoraki, S. Laban, C. Brunner, T. K. Hoffmann, and M. C. Wigand
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Head and neck cancer ,Aging ,T cells ,Immunosenescence ,Immune escape ,Immunologic diseases. Allergy ,RC581-607 ,Geriatrics ,RC952-954.6 - Abstract
Abstract Introduction The number of aging cancer patients has increased continuously and will do so further in the future. The immune system of elderly people experiences critical changes over the time. Therefore, tumor-induced changes in the immune system are believed to differ in young and elderly cancer patients as well. Methods The effect of aging on the immune system was measured in peripheral blood lymphocytes (PBL) of healthy volunteers (n = 48, 21–84 yrs.) divided into three different age groups. Seventy years was set as a cut-off for defining subjects as elderly. Results were compared to two groups of adult cancer patients, which donated PBL and tumor infiltrating lymphocytes (TIL): young cancer patients (40–69 yrs.; blood: n = 13; TIL: n = 17) and elderly cancer patients (70–90 yrs.; blood: n = 20; TIL: n = 15) with head and neck squamous cell carcinoma (HNSCC). Frequencies and phenotypes of CD4+ and CD8+ T cells as well as regulatory T cells (Treg) were assessed by flow cytometry. Results We observed lower frequencies of CD8+ cytotoxic T cells during aging in both groups. Frequencies of tumor infiltrating regulatory T cells were significantly higher than in the peripheral blood but showed a significant decline in older tumor patients. With increasing age, expression of immunosuppressive CD73 and CCR7 was lower and expression of PD1 elevated on peripheral T cells in healthy volunteers and tumor patients. Conclusion Immunosenescence takes place in healthy donors and cancer patients. Our results suggest that in elderly tumor patients, the immune system is impaired and the tumor-induced immune escape is less pronounced. The increased expression of PD1 implies the potential for effective immunotherapies in elderly, as treatment with checkpoint inhibitors could be more beneficial for elderly HNSCC patients.
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- 2020
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45. Application of Quantile Graphs to the Automated Analysis of EEG Signals
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Campanharo, Andriana S. L. O., Doescher, Erwin, and Ramos, Fernando M.
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- 2020
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46. Adenosine-producing regulatory B cells in head and neck cancer
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Jeske, Sandra S., Brand, Matthias, Ziebart, Andreas, Laban, Simon, Doescher, Johannes, Greve, Jens, Jackson, Edwin K., Hoffmann, Thomas K., Brunner, Cornelia, and Schuler, Patrick J.
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- 2020
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47. Onkoimmunologie im Alter
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Wigand, M. C., Jeske, S., Hahn, J., Doescher, J., Laban, S., Hoffmann, T. K., and Schuler, P. J.
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- 2020
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48. BTK Isoforms p80 and p65 Are Expressed in Head and Neck Squamous Cell Carcinoma (HNSCC) and Involved in Tumor Progression
- Author
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Betzler, A, Strobel, H, Abou Kors, T, Ezić, J, Lesakova, K, Pscheid, R, Azoitei, N, Sporleder, J, Staufenberg, A, Drees, R, Weissinger, S, Greve, J, Doescher, J, Theodoraki, M, Schuler, P, Laban, S, Kibe, T, Kishida, M, Kishida, S, Idel, C, Hoffmann, T, Lavitrano, M, Grassilli, E, Brunner, C, Betzler, Annika C, Strobel, Hannah, Abou Kors, Tsima, Ezić, Jasmin, Lesakova, Kristina, Pscheid, Ronja, Azoitei, Ninel, Sporleder, Johanna, Staufenberg, Anna-Rebekka, Drees, Robert, Weissinger, Stephanie E, Greve, Jens, Doescher, Johannes, Theodoraki, Marie-Nicole, Schuler, Patrick J, Laban, Simon, Kibe, Toshiro, Kishida, Michiko, Kishida, Shosei, Idel, Christian, Hoffmann, Thomas K, Lavitrano, Marialuisa, Grassilli, Emanuela, Brunner, Cornelia, Betzler, A, Strobel, H, Abou Kors, T, Ezić, J, Lesakova, K, Pscheid, R, Azoitei, N, Sporleder, J, Staufenberg, A, Drees, R, Weissinger, S, Greve, J, Doescher, J, Theodoraki, M, Schuler, P, Laban, S, Kibe, T, Kishida, M, Kishida, S, Idel, C, Hoffmann, T, Lavitrano, M, Grassilli, E, Brunner, C, Betzler, Annika C, Strobel, Hannah, Abou Kors, Tsima, Ezić, Jasmin, Lesakova, Kristina, Pscheid, Ronja, Azoitei, Ninel, Sporleder, Johanna, Staufenberg, Anna-Rebekka, Drees, Robert, Weissinger, Stephanie E, Greve, Jens, Doescher, Johannes, Theodoraki, Marie-Nicole, Schuler, Patrick J, Laban, Simon, Kibe, Toshiro, Kishida, Michiko, Kishida, Shosei, Idel, Christian, Hoffmann, Thomas K, Lavitrano, Marialuisa, Grassilli, Emanuela, and Brunner, Cornelia
- Abstract
Here, we describe the expression of Bruton’s Tyrosine Kinase (BTK) in head and neck squamous cell carcinoma (HNSCC) cell lines as well as in primary HNSCC samples. BTK is a kinase initially thought to be expressed exclusively in cells of hematopoietic origin. Apart from the 77 kDa BTK isoform expressed in immune cells, particularly in B cells, we identified the 80 kDa and 65 kDa BTK isoforms in HNSCC, recently described as oncogenic. Importantly, we revealed that both isoforms are products of the same mRNA. By investigating the mechanism regulating oncogenic BTK-p80/p65 expression in HNSSC versus healthy or benign tissues, our data suggests that the epigenetic process of methylation might be responsible for the initiation of BTK-p80/p65 expression in HNSCC. Our findings demonstrate that chemical or genetic abrogation of BTK activity leads to inhibition of tumor progression in terms of proliferation and vascularization in vitro and in vivo. These observations were associated with cell cycle arrest and increased apoptosis and autophagy. Together, these data indicate BTK-p80 and BTK-p65 as novel HNSCC-associated oncogenes. Owing to the fact that abundant BTK expression is a characteristic feature of primary and metastatic HNSCC, targeting BTK activity appears as a promising therapeutic option for HNSCC patients.
- Published
- 2023
49. Immuntherapie von Kopf-Hals-Tumoren: Highlights der ASCO-Jahrestagung 2019
- Author
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Doescher, J., Busch, C.-J., Wollenberg, B., Dietz, A., Würdemann, N., Schuler, P., Hoffmann, T. K., and Laban, S.
- Published
- 2019
- Full Text
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50. Maligne Speicheldrüsentumoren – Highlights der ASCO-Jahrestagung 2019
- Author
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Doescher, J., Schuler, P. J., Greve, J., Meyer, M. F., Weissinger, S., Hoffmann, T. K., and Laban, S.
- Published
- 2019
- Full Text
- View/download PDF
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