Medical Specialties Commons^™

Oxygen Therapy Education To Improve Oxygen Safety In The Emergency Department: A Quality Improvement Project, Latania Wolfe

DNP Projects

Background and Significance: Oxygen is often administered in emergency departments (ED) in US without the nurses and other healthcare staff inputting orders for this medication. This gap in placing orders poses a risk to patient safety and poses a regulation issue.

Purpose: The goal of this quality improvement project is to increase the rate of orders placed for patients using oxygen in ED staff by 12% from March 1, 2023 to May 31, 2023.

Methods: The Model for Improvement guided this quality improvement project. Two PDSA cycles were completed.

Results: PDSA #1 Completed SWOT analysis and used information to …

Phenotype And Genetic Analysis Of Data Collected Within The First Year Of Neurodev, Patricia Kipkemoi, Heesu Ally Kim, Bjorn Christ, Emily O’Heir, Jake Allen, Christina Austin-Tse, Samantha Baxter, Amina Abubakar, Charles Newton, Alicia Martin

Institute for Human Development, East Africa

Genetic association studies have made significant contributions to our understanding of the etiology of neurodevelopmental disorders (NDDs). However, these studies rarely focused on the African continent. The NeuroDev Project aims to address this diversity gap through detailed phenotypic and genetic characterization of children with NDDs from Kenya and South Africa. We present results from NeuroDev’s first year of data collection, including phenotype data from 206 cases and clinical genetic analyses of 99 parent-child trios. Most cases met criteria for global developmental delay/intellectual disability (GDD/ID, 80.3%). Approximately half of the children with GDD/ID also met criteria for autism. Analysis of exome-sequencing …

Cost-Effectiveness Of Hydroxyurea For Sickle Cell Anemia In A Low-Income African Setting: A Model-Based Evaluation Of Two Dosing Regimens, David Teigen, Robert Opoka, Phillip Kasirye, Catherine Nabaggala, Heather A. Hume, Bjørn Blomberg, Chandy John, Russell Ware, Bjarne Robberstad

Paediatrics and Child Health, East Africa

Background and Objective: The disease burden of sickle cell anemia (SCA) in sub-Saharan African (SSA) countries is substantial, with many children dying without an established diagnosis or proper treatment. The global burden of SCA is increasing each year, making therapeutic intervention a high priority. Hydroxyurea is the only disease-modifying therapy with proven feasibility and efcacy suitable for SSA; however, no one has quantifed the health economic implications of its use. Therefore, from the perspective of the health care provider, we estimated the incremental cost-efectiveness of hydroxyurea as a fxed-dose regimen or maximum tolerated dose (MTD) regimen, versus SCA care without …

Delphi Consensus On Reporting Standards In Clinical Studies For Endovascular Treatment Of Acute Iliofemoral Venous Thrombosis And Chronic Iliofemoral Venous Obstruction., Suresh Vedantham, Peter Gloviczki, Teresa L Carman, Sandra Zelman Lewis, Peter A Schneider, Saher S Sabri, Raghu Kolluri

Heart and Vascular Articles

Acute iliofemoral deep vein thrombosis and chronic iliofemoral venous obstruction cause substantial patient harm and are increasingly managed with endovascular venous interventions, including percutaneous mechanical thrombectomy and stent placement. However, studies of these treatment elements have not been designed and reported with sufficient rigor to support confident conclusions about their clinical utility. In this project, the Trustworthy consensus-based statement approach was utilized to develop, via a structured process, consensus-based statements to guide future investigators of venous interventions. Thirty statements were drafted to encompass major topics relevant to venous study description and design, safety outcome assessment, efficacy outcome assessment, and topics …

View-Vlu Observational Study Of The Effect Of Varithena On Wound Healing In The Treatment Of Venous Leg Ulcers., Michael Y Shao, Stuart Harlin, Beverly Chan, Kathylee Santangelo, Eri Fukaya, Julianne Stoughton, Raghu Kolluri

Heart and Vascular Articles

OBJECTIVE: Chronic venous hypertension, triggered by venous reflux and/or obstruction, leads to skin changes and venous leg ulcers (VLUs). Compression therapy is the standard of care, but many wounds remain unhealed. The objectives of this study were to observe the effects of endovenous chemical ablation with commercially available 1% polidocanol injectable microfoam on VLU healing and recurrence rates.

METHODS: The VIEW VLU study was a multicenter, open-label, phase IV registry of patients with active VLUs resulting from venous insufficiency of the great saphenous vein and/or anterior accessory saphenous vein systems who underwent ablation with 1% polidocanol microfoam. Primary outcomes included …

Primary Retrograde Tibiotalocalcaneal Nailing In An Elderly Osteoporotic Patient With Ankle Fracture: A Case Report., Nolan P Schmitz, Daniel R Gaines, Jignesh N Patel

Surgery Articles

INTRODUCTION: Ankle fractures are a common orthopedic injury traditionally treated with open reduction and internal fixation or conservative management. One complication introduced with open reduction and internal fixation is the requirement for non or partial weight bearing in the post-operative period. This requirement poses a unique challenge for patients who may not comply with these weight-bearing restrictions. This case is the first known article that specifically illustrates the validity and effectiveness of retrograde tibiotalocalcaneal (TTC) nailing for patients who are unlikely to follow weight-bearing restrictions.

CASE REPORT: An 83-year-old Caucasian female with idiopathic mild mental retardation and Alzheimer's presented with …

Dupilumab-Induced Pancreatitis., Vivek V Jasti, Sean T Mccarthy, Shail M Govani

Ambulatory and Primary Care Articles

Drug-induced pancreatitis (DIP) is a rare cause of pancreatitis with an extensive and growing list of offending medications. Drawing a causative relationship between a medication and pancreatitis can be challenging, requiring a thorough workup to exclude other potential etiologies. By using scoring systems to identify DIP, we have identified another case of suspected DIP. In this study, we present a case of pancreatitis 10 days after initiation of dupilumab. An evaluation for other causes was unrevealing. As dupilumab use increases, providers should be aware of this possible adverse effect.

Validation Of The Hierarchical Nature Of The Ao Spine Sacral Classification And The Development Of The Sacral Ao Spine Injury Score, Brian A. Karamian, Gregory D. Schroeder, Mark J. Lambrechts, Jose A. Canseco, Emiliano N. Vialle, Frank Kandziora, Lorin M. Benneker, Rajasekaran Shanmuganathan, F. Cumhur Öner, Klaus J. Schnake, Christopher K. Kepler, Alexander R. Vaccaro

Rothman Institute Papers

STUDY DESIGN: Global cross-sectional survey.

OBJECTIVE: The objective of this study was to validate the hierarchical nature of the AO Spine Sacral Classification System and develop an injury scoring system.

SUMMARY OF BACKGROUND DATA: Although substantial interobserver and intraobserver reliability of the AO Spine Sacral Classification System has been established, the hierarchical nature of the classification has yet to be validated.

METHODS: Respondents numerically graded each variable within the classification system for severity. Based on the results, a Sacral AO Spine Injury Score (AOSIS) was developed.

RESULTS: A total of 142 responses were received. The classification exhibited a hierarchical Injury …

A Longitudinal Investigation Of Blood Neurofilament Light Chain Levels In Chronic Cocaine Users, Francesco Bavato, Ann-Kathrin Kexel, Bruno Kluwe-Schiavon, Aleksandra Maceski, Markus R Baumgartner, Erich Seifritz, Jens Kuhle, Boris B Quednow

Faculty, Staff and Student Publications

The identification of a blood marker of brain pathology that is sensitive to substance-induced neurotoxicity and dynamically responds to longitudinal changes in substance intake would substantially improve clinical monitoring in the field of substance use and addiction. Here, we explored the hypothesis that plasma levels of neurofilament light chain (NfL), a promising marker of neuroaxonal pathology, are elevated in chronic cocaine users and longitudinally associated with changes in cocaine use. Plasma NfL levels were determined using single molecule array (SIMOA) technology at baseline and at a 4-month follow-up. Substance use was subjectively assessed with an extensive interview and objectively measured …

Disparities In The Operative Experience Between Female And Male General Surgery Residents: A Multi-Institutional Study From The Us Rope Consortium, Leah K Winer, Sarah Kader, Jonathan S Abelson, Austin C Hammaker, Chukwuma N Eruchalu, James C Etheridge, Nancy L Cho, Darci C Foote, Felicia A Ivascu, Savannah Smith, Lauren M Postlewait, Kathriena Greenwell, Katherine M Meister, Kelsey B Montgomery, Polina Zmijewski, Samuel E Byrd, Mary K Kimbrough, Stephen J Stopenski, Jeffry T Nahmias, Jalen Harvey, Deborah Farr, Zachary M Callahan, Joshua A Marks, Christopher C Stahl, Motaz Al Yafi, Jeffrey M Sutton, Ali Elsaadi, Samuel J Campbell, Shah-Jahan M Dodwad, Sasha D Adams, Matthew R Woeste, Robert C G Martin, Purvi Patel, Michael J Anstadt, Bilal Waqar Nasim, Ross E Willis, Jitesh A Patel, Melisa R Newcomb, Brian C George, Ralph C Quillin, Alexander R Cortez

Faculty, Staff and Student Publications

OBJECTIVE: To examine differences in resident operative experience between male and female general surgery residents.

BACKGROUND: Despite increasing female representation in surgery, sex and gender disparities in residency experience continue to exist. The operative volume of male and female general surgery residents has not been compared on a multi-institutional level.

METHODS: Demographic characteristics and case logs were obtained for categorical general surgery graduates between 2010 and 2020 from the US Resident OPerative Experience Consortium database. Univariable, multivariable, and linear regression analyses were performed to compare differences in operative experience between male and female residents.

RESULTS: There were 1343 graduates from …

A Cohort Study Assessing The Impact Of Anki As A Spaced Repetition Tool On Academic Performance In Medical School, Michael M. Gilbert, Timothy C. Frommeyer, Garrett V. Brittain, Nickolas A. Stewart, Todd M. Turner, Adrienne Stolfi, Dean Parmelee

Pediatrics Faculty Publications

Introduction

Anki is an application that capitalizes upon the techniques of spaced repetition and is increasingly utilized by medical students for examination preparation. This study examines the impact of Anki usage in a medical school curriculum on academic performance. Secondary objectives analyzed individual Anki utilization and a qualitative assessment of Anki use.

Methods

A cohort-control study was conducted at Boonshoft School of Medicine. One hundred thirty first-year medical students were enrolled in an Anki utilization training program from July 2021 to September 2021. Training included educational Anki courses and subsequent survey data collection over Anki usage. Data variables included all …

Sleep And Behavioral Problems Among Preschool Children: Correlations From Pakistan Urban, Seema Zainulabdin Lasi, Somal Kayani, Noreen Afzal

Human Development Programme

The study was undertaken to explore patterns, habits, and problems for sleep in preschool children of urban Karachi, Pakistan. Two schools participated with a sample size of 297 preschool children. A cross-sectional study design was implemented. The mean age of children was 4.6 ± 0.71 years, and the male/female ratio was 49:51. The average daily sleep duration (nocturnal + daytime nap) was 9.51 ± 1.21 hours. At least one sleep problem was reported in 73% of children, the most frequently found sleep problems were, bedtime and wakeup resistance (25.6%), sleepy or tired during the day (46%), complains of growing pains …

Developing And Testing A Clinical Care Bundle Incorporating Caffeine Citrate To Manage Apnoea Of Prematurity In A Resource-Constrained Setting: A Mixed Methods Clinical Feasibility Study Protocol, Grace Irimu, Ferdinand Okwaro, Jesse Coleman, Mary Waiyego, Dorothy Chomba, Millicent Parsimei, Cynthia Shitote, Roseline Ochieng, Jasmit Shah, William Macharia

Paediatrics and Child Health, East Africa

Background Apnoea of prematurity (AOP) is a common condition among preterm infants. Methylxanthines, such as cafeine and aminophylline/theophylline, can help prevent and treat AOP. Due to its physiological benefts and fewer side efects, cafeine citrate is recommended for the prevention and treatment of AOP. However, cafeine citrate is not available in most resource-constrained settings (RCS) due to its high cost. Challenges in RCS using caffeine citrate to prevent AOP include identifying eligible preterm infants where gestational age is not always known and the capability for continuous monitoring of vital signs to readily identify apnoea. We aim to develop an evidencebased …

2023-2024 Pediatric Subspecialty Trainees, Children's Mercy Kansas City

Residents and Fellows Portraits

Photo composites of the graduate pediatric trainees in adolescent medicine, allergy/immunology, child abuse pediatrics, child neurology, clinical neuro-psychology, coagulation, clinical child psychology, clinical child psychology internship, epilepsy, hospice & palliative care, pediatric anesthesiology, pediatric bioethics, neonatal-perinatal medicine, pediatric adolescent gynecology, pediatric cardiology, pediatric EM/child abuse, pediatric critical care medicine, pediatric dentistry, pediatric emergency medicine, pediatric endocrinology, pediatric gastroenterology, pediatric hematology/oncology, pediatric hospital medicine, pediatric infectious diseases, pediatric nephrology, pediatric ophthalmology; pediatric optometry, pediatric orthopedic surgery, pediatric otolaryngology, pediatric pulmonology, pediatric rehabilitation, pediatric sports medicine, pediatric surgery, sleep medicine, pharmacy, pediatric residency and med/peds residency.

Pregnancy-Related Mortality Up To 1 Year Postpartum In Sub-Saharan Africa: An Analysis Of Verbal Autopsy Data From Six Countries, Ursula Gazeley, Georges Reniers, Julio E. Romero- Prieto, Clara Calvert, Momodou Jasseh, Kobus Herbst, Sammy Khagayi, David Obor, Daniel Kwaro, Marleen Temmerman

Obstetrics and Gynaecology, East Africa

Objective: To compare the causes of death for women who died during pregnancy and within the first 42 days postpartum with those of women who died between >42 days and within 1 year postpartum.

Design: Open population cohort (Health and Demographic Surveillance Systems).

Setting: Ten Health and Demographic Surveillance Systems (HDSS) in The Gambia, Kenya, Malawi, Tanzania, Ethiopia and South Africa.

Population: 2114 deaths which occurred within 1 year of the end of pregnancy where a verbal autopsy interview was conducted from 2000 to 2019.

Methods: InterVA5 and InSilicoVA verbal autopsy algorithms were used to at-tribute the most likely underlying …

Ketohexokinase-C Regulates Global Protein Acetylation To Decrease Carnitine Palmitoyltransferase 1a-Mediated Fatty Acid Oxidation, Robert N. Helsley, Se-Hyung Park, Hemendra J. Vekaria, Patrick G. Sullivan, Lindsey R. Conroy, Ramon Sun, María Del Mar Romero, Laura Herrero, Joanna Bons, Christina D. King, Jacob Rose, Jesse G. Meyer, Birgit Schilling, C. Ronald Kahn, Samir Softic

Saha Cardiovascular Research Center Faculty Publications

Background & Aims: The consumption of sugar and a high-fat diet (HFD) promotes the development of obesity and metabolic dysfunction. Despite their well-known synergy, the mechanisms by which sugar worsens the outcomes associated with a HFD are largely elusive. Methods: Six-week-old, male, C57Bl/6 J mice were fed either chow or a HFD and were provided with regular, fructose- or glucose-sweetened water. Moreover, cultured AML12 hepatocytes were engineered to overexpress ketohexokinase-C (KHK–C) using a lentivirus vector, while CRISPR-Cas9 was used to knockdown CPT1a. The cell culture experiments were complemented with in vivo studies using mice with hepatic overexpression of KHK–C and …

Implementation Of A Patient Care Specialist Role To Enhance The Patient Experience In A Pediatric Emergency Department, Jillian Brodeur

Doctor of Nursing Practice Projects

Background: Patient-centered care (PCC) has been an emerging trend in healthcare for the past two decades (Walsh et al., 2022). PCC and the patient experience have become essential measures of the quality of care provided and are linked to reimbursement dollars and improved patient outcomes (Rapport et al., 2019).

Purpose: The purpose of the Doctor of Nursing Practice (DNP) project was to improve the patient experience in the Emergency Department (ED) of a metropolitan hospital. The DNP project focused on the benefit of a patient advocate in the ED to improve the patient experience. The project sought to improve …

Improving Door-To-Balloon Times In Adult Patients With St-Elevation Myocardial Infarction By Utilizing A Stemi-Rn, Amanda Hunter

Doctor of Nursing Practice Projects

Background: Heart disease is the leading cause of death in Alabama. The national estimated annual incidence of myocardial infarction (MI) is 605,000 new and 200,000 recurrent attacks, of which approximately 170,000 are silent (Tsao et al., 2022). Roughly every 40 seconds, an American will have an MI (Tsao et al., 2022). An ST-elevation myocardial infarction (STEMI) occurs when one or more of the coronary arteries supplying the heart with blood occlude, leading to myocardial injury (Akbar et al., 2021). Clinical practice guidelines for STEMI recommend Door to Balloon (D2B) intervention in 90 minutes or less (O'Gara et al., 2013), while …

Establishing A Routine Process Of Medication Reconciliation In A Rural Primary Care Clinic To Address Unnecessary Polypharmacy In Patients 65 And Older, Jessica Kirkwood-Harp

Doctor of Nursing Practice Projects

Background: Medication safety by reducing the proportion of older adults who use inappropriate medications is a Healthy People 2030 goal (Office of Disease Prevention and Health Promotion, n.d.(a)). The research for this proposal supported an established medication reconciliation (MR) to reduce errors and adverse drug events (ADEs). Consistent MR is essential for patient safety and positive patient outcomes in rural outpatient primary care clinics, as these patients possess multiple comorbidities.

Purpose: This Doctor of Nursing Practice (DNP) quality improvement project (QIP) established a routine MR process within a rural primary care clinic with reduced unnecessary polypharmacy and decreased risk of …

Organisation, Staffing And Resources Of Critical Care Units In Kenya, Wambui Mwangi, Ronnie Kaddu, Carolyne Njoki Muiru, Nabukwangwa Simiyu, Vishal Patel, Demet Sulemanji, Dorothy Otieno, David Misango, Wangari Siika, Rashan Haniffa

Anaesthesiology, East Africa

Objective: To describe the organisation, staffing patterns and resources available in critical care units in Kenya. The secondary objective was to explore variations between units in the public and private sectors.

Materials and methods: An online cross-sectional survey was used to collect data on organisational characteristics (model of care, type of unit, quality- related activities, use of electronic medical records and participation in the national ICU registry), staffing and available resources for monitoring, ventilation and general critical care.

Results: The survey included 60 of 75 identified units (80% response rate), with 43% (n = 23) located in government facilities. A …

Ers International Congress 2022: Highlights From The Thoracic Oncology Assembly, Maria J. Catarata, Wouter H. Van Geffen, Radhika Banka, Beatriz Ferraz, Calvin Sidhu, Alan Carew, Lucia Viola, Rolof Gijtenbeek, Georgia Hardavella

Research outputs 2022 to 2026

Thoracic malignancies are associated with a substantial public health burden. Lung cancer is the leading cause of cancer-related mortality worldwide, with significant impact on patients’ quality of life. Following 2 years of virtual European Respiratory Society (ERS) Congresses due to the COVID-19 pandemic, the 2022 hybrid ERS Congress in Barcelona, Spain allowed peers from all over the world to meet again and present their work. Thoracic oncology experts presented best practices and latest developments in lung cancer screening, lung cancer diagnosis and management. Early lung cancer diagnosis, subsequent pros and cons of aggressive management, identification and management of systemic treatments’ …

Posture Care Management In School Based Settings For Children With Complex Physical Disabilities, Sabrina Rodriguez, Mary Jan Greer, Lee Ann Hoffman

Summer 2023 Virtual OTD Capstone Symposium

Posture care management (PCM) is an intervention that helps protect a person’s body through different positions within different contexts. PCM is not a singular direct intervention as each person is different and has different needs. This process is especially important for those who cannot reposition themselves such as children with complex physical disabilities. These children rely mainly for caregivers and school staff this process since home and school are the main places they spend the beginning years of their lives. Therefore, it is important to educate caregivers and school staff on the guidelines of proper PCM to promote health, well-being, …

Occupational Therapists' Perceptions Of Sensory Processing Evaluation Methods, Grace Hong, Jazminne Orozco Arteaga, Karen Park

Summer 2023 Virtual OTD Capstone Symposium

Background: This study aimed to obtain occupational therapists’ (OTs) experiences and perspectives on current evaluation tools who work with clients with sensory processing challenges in their clinical settings. Method: This research was a mixed-method study. Data was collected from surveys (n = 11) which had a mix of nominal, interval, close-ended, and open-ended questions. Following survey completion, participants were given the option to complete a semi-structured interview (n = 2) consisting of open-ended questions to clarify survey responses and gather additional information about their experiences. Results: The results indicated a high number of various barriers and limitations …

Hippocampal Volume And The Detection Of Mild Cognitive Impairment In An Older Adult Population: Assessing Performance On Cognitive Screeners Administered In-Person And Electronically, Kristen Fabrizi

Dissertations

The present study investigated how performance on in-person and electronic neuropsychological assessment measures predicted subcortical hippocampal volume and cognitive decline consistent with mild cognitive impairment. It was hypothesized that the Montreal Cognitive Assessment would display better predictive strength than the Cogstate Brief Battery when evaluating subcortical hippocampal volume measured via structural magnetic resonance imaging. It was further hypothesized that the Montreal Cognitive Assessment would be more sensitive to predicting group membership to the diagnostic classification of mild cognitive impairment compared to the Cogstate Brief Battery. The sample included 445 older adult participants selected from the Alzheimer’s Disease Neuroimaging Initiative 3. …

Multiple Sterile Withdrawals From Iohexol Bottles Does Not Increase Contamination Risk, Caroline Purtill, Manraj Dhesi, Daniel Haber, Nicholas D'Antonio, Noreen J. Hickok, Jeremy I. Simon

Department of Orthopaedic Surgery Faculty Papers

BACKGROUND: There is a global shortage of iohexol contrast media, commonly used in epidural injections, as a result of lockdown and decreased production due to COVID-19. Iohexol bottles are designated for single use, which, depending on the vials available, often leads to wasting up to 95% of this limited resource. However, avoiding multiple withdrawals may be unnecessary if withdrawing multiple times using sterile technique does not increase the risk for contamination.

OBJECTIVES: The purpose of our study is to determine whether multiple withdrawals from iohexol injection bottles using a sterile technique poses a greater risk of introducing contaminants than a …

Etiologies And Predictors Of 30-Day Readmission In Heart Failure: An Updated Analysis, Akhil Jain, Shilpkumar Arora, Viral Patel, Maharshi Raval, Karnav Modi, Nirav Arora, Rupak Desai, Behnam Bozorgnia, Raphael Bonita

Einstein Health Papers

BACKGROUND AND OBJECTIVES: Readmissions in heart failure (HF), historically reported as 20%, contribute to significant patient morbidity and high financial cost to the healthcare system. The changing population landscape and risk factor dynamics mandate periodic epidemiologic reassessment of HF readmissions.

METHODS: National Readmission Database (NRD, 2019) was used to identify HF-related hospitalizations and evaluated for demographic, admission characteristics, and comorbidity differences between patients readmitted vs. those not readmitted at 30-days. Causes of readmission and predictors of all-cause, HF-specific, and non-HF-related readmissions were analyzed.

RESULTS: Of 48,971 HF patients, the readmitted cohort was younger (mean 67.4 vs. 68.9 years, p≤0.001), had …

A Dynamical Systems Approach To Characterizing Brain–Body Interactions During Movement: Challenges, Interpretations, And Recommendations, Derek C. Monroe, Nathaniel T. Berry, Peter C. Fino, Christopher K. Rhea

Rehabilitation Sciences Faculty Publications

Brain–body interactions (BBIs) have been the focus of intense scrutiny since the inception of the scientific method, playing a foundational role in the earliest debates over the philosophy of science. Contemporary investigations of BBIs to elucidate the neural principles of motor control have benefited from advances in neuroimaging, device engineering, and signal processing. However, these studies generally suffer from two major limitations. First, they rely on interpretations of ‘brain’ activity that are behavioral in nature, rather than neuroanatomical or biophysical. Second, they employ methodological approaches that are inconsistent with a dynamical systems approach to neuromotor control. These limitations represent a …

Associations Between Kir/Kir-Ligand Genotypes And Clinical Outcome For Patients With Advanced Solid Tumors Receiving Bempeg Plus Nivolumab Combination Therapy In The Pivot-02 Trial, A S Feils, A K Erbe, J Birstler, K Kim, U Hoch, S L Currie, T Nguyen, D Yu, A O Siefker-Radtke, N Tannir, S M Tolaney, A Diab, P M Sondel

Faculty, Staff and Student Publications

Bempegaldesleukin (BEMPEG), a CD122-preferential IL2 pathway agonist, has been shown to induce proliferation and activation of NK cells. NK activation is dependent on the balance of inhibitory and excitatory signals transmitted by NK receptors, including Fc-gamma receptors (FCγRs) and killer immunoglobulin-like receptors (KIRs) along with their KIR-ligands. The repertoire of KIRs/KIR-ligands an individual inherits and the single-nucleotide polymorphisms (SNPs) of FCγRs can influence NK function and affect responses to immunotherapies. In this retrospective analysis of the single-arm PIVOT-02 trial, 200 patients with advanced solid tumors were genotyped for KIR/KIR-ligand gene status and FCγR SNP status and evaluated for associations with …

Dna Methylation-Based Classifier Differentiates Intrahepatic Pancreato-Biliary Tumours, Mihnea P Dragomir, Teodor G Calina, Eilís Perez, Simon Schallenberg, Meng Chen, Thomas Albrecht, Ines Koch, Peggy Wolkenstein, Benjamin Goeppert, Stephanie Roessler, George A Calin, Christine Sers, David Horst, Florian Roßner, David Capper

Faculty, Staff and Student Publications

BACKGROUND: Differentiating intrahepatic cholangiocarcinomas (iCCA) from hepatic metastases of pancreatic ductal adenocarcinoma (PAAD) is challenging. Both tumours have similar morphological and immunohistochemical pattern and share multiple driver mutations. We hypothesised that DNA methylation-based machine-learning algorithms may help perform this task.

METHODS: We assembled genome-wide DNA methylation data for iCCA (n = 259), PAAD (n = 431), and normal bile duct (n = 70) from publicly available sources. We split this cohort into a reference (n = 399) and a validation set (n = 361). Using the reference cohort, we trained three machine learning models to differentiate between these entities. Furthermore, …

Radiomic And Deep Learning Characterization Of Breast Parenchyma On Full Field Digital Mammograms And Specimen Radiographs: A Pilot Study Of A Potential Cancer Field Effect, Natalie Baughan, Hui Li, Li Lan, Matthew Embury, Isaiah Yim, Gary J Whitman, Randa El-Zein, Isabelle Bedrosian, Maryellen L Giger

Faculty, Staff and Student Publications

PURPOSE: In women with biopsy-proven breast cancer, histologically normal areas of the parenchyma have shown molecular similarity to the tumor, supporting a potential cancer field effect. The purpose of this work was to investigate relationships of human-engineered radiomic and deep learning features between regions across the breast in mammographic parenchymal patterns and specimen radiographs.

APPROACH: This study included mammograms from 74 patients with at least 1 identified malignant tumor, of whom 32 also possessed intraoperative radiographs of mastectomy specimens. Mammograms were acquired with a Hologic system and specimen radiographs were acquired with a Fujifilm imaging system. All images were retrospectively …