Digital Commons Network^™

Gadolinium Deposition Concerns In Magnetic Resonance Imaging, Emily Tran

Radiologic Sciences

Purpose To examine how concerns about gadolinium deposition have influenced the use of macrocyclic versus linear contrast agents in magnetic resonance (MR) practice.

Method A structured literature review was conducted using AI-assisted research tools and academic databases to identify recent peer-reviewed original research articles related to gadolinium deposition and contrast agent use patterns in MR. Only studies published between 2020 and 2026 were included.

Results Recent research confirmed that gadolinium can accumulate in human tissues following contrast-enhanced MR examinations. Multiple studies demonstrated that linear gadolinium-based contrast agents are associated with greater levels of tissue retention compared with macrocyclic agents due …

High-Definition Healing: Investigating Ai-Driven Mr Reconstruction Methods, Jerell R. Jones

Radiologic Sciences

Purpose To analyze recent artificial intelligence (AI)-driven magnetic resonance (MR) reconstruction methods aimed at addressing long acquisition times, image artifacts, and workflow inefficiencies.

Method A systematic literature review was conducted using PubMed, Scopus, and Scopus AI, targeting peer‑reviewed studies published between 2015 and 2026. Search terms included “MRI,” “magnetic resonance imaging,” “artificial intelligence,” “deep learning,” and “machine learning.” Eligible studies included methodology, validation, and review papers. Extracted data included algorithm type, study design, key findings, and limitations. Themes were identified through content analysis and generative AI use.

Results Prominent themes identified were the emergence of generative adversarial networks, advanced neural …

Administrative And Clinical Impacts Of Theranostic Program Expansion In Nuclear Medicine, Karmela Kljajic Pascual

Radiologic Sciences

Purpose To synthesize current evidence on theranostic trials, nuclear medicine clinical workflow models, and organizational readiness, with a focus on how healthcare organizations and medical imaging leaders are adapting to the rapid expansion of theranostic services.

Method A comprehensive search was conducted across Scopus, PubMed, MEDLINE, and Google Scholar. Inclusion criteria required peer‑reviewed articles published between 2002 and 2026 addressing nuclear medicine leadership, theranostic implementation, workflow design, and organizational factors influencing theranostic program development. Exclusion criteria removed editorials, blog posts, and nonpeer‑reviewed sources.

Results Four major themes emerged: workforce and staffing demands, infrastructure and resource requirements, regulatory and administrative pressures, …

Evaluating The Safety Of Mr Exposure For Electronic Devices And Implants: A Literature Review, Molly O'Dowd

Radiologic Sciences

Purpose To review literature examining the factors that determine magnetic resonance (MR) compatibility of electronic implants and wearable devices, including device materials, engineering design, regulatory approval processes, and clinical monitoring requirements.

Method An integrative literature review was conducted using peer-reviewed literature addressing MR safety and device compatibility. Databases searched included PubMed, Wiley Online Library, ScienceDirect, and Google Scholar. Studies were selected based on relevance to MR safety classifications, device design considerations, regulatory labeling, and monitoring requirements.

Results The literature demonstrated that MR compatible devices are engineered and tested to meet regulatory safety standards and approved for use under specific scanning …

Interpreting Continuous Glucose Monitoring Through Metabolic Physiology: A Framework For Precision Nutrition In Type 2 Diabetes, Jitendra D. Belani

College of Pharmacy Faculty Papers

Background: Type 2 diabetes is characterized by substantial interindividual variability in postprandial glucose responses, yet continuous glucose monitoring (CGM)-derived glucose patterns are commonly described using quantitative metrics without sufficient consideration of the physiological mechanisms that generate them. Objective: To develop a physiology-based framework for interpreting CGM-derived glycemic phenotypes in relation to dietary exposures and individual metabolic characteristics, thereby supporting precision nutrition in adults with type 2 diabetes. Methods: A structured narrative review of the literature was conducted using PubMed to identify studies examining CGM, postprandial glucose regulation, dietary exposures, metabolic physiology, and precision nutrition. Evidence was synthesized within a predefined …

Dose-Expansion Study Of Obi-999, A Globo H-Targeting Antibody-Drug Conjugate, In Patients With Advanced Solid Tumors, Apostolia Maria Tsimberidou, Darren Sigal, Anna Varghese, Daniel Vaena, Li-Yuan Bai, Ming-Huang Chen, Chun-Nan Yeh, Chia-Jui Yen, Mehmet A Baysal, Abhijit Chakraborty, Ingly Lee, Chi-Sheng Shia, Konul Ristoski, Dong Xu

Children’s Nutrition Research Center Staff Publications

Background: OBI-999 is an antibody-drug conjugate consisting of the Globo H-targeting antibody OBI-888 linked to the cytotoxic payload monomethyl auristatin E. In a dose-escalation study, the OBI-999 recommended phase 2 dose (RP2D) was 1.2 mg/kg every 3 weeks. This dose-expansion study evaluated the efficacy and safety of OBI-999 in patients with pancreatic cancer, colorectal cancer (CRC), or other tumor types ("basket cohort") and tumoral Globo H H-scores ≥100 (NCT04084366).

Patients and methods: Patients were treated at RP2D of OBI-999. We assessed response, progression-free survival (PFS), treatment-emergent adverse events (TEAEs), and pharmacokinetics of OBI-999.

Results: Of 29 patients treated, …

Hematopoietic Stem And Progenitor Cell Reprogramming During Breast Cancer Progression Promotes Myeloid-Biased Hematopoiesis, Emily Maria Eul

Arts & Sciences Graduate Student Theses and Dissertations

Breast cancer progression is associated with systemic immune dysregulation characterized by the expansion of immunosuppressive myeloid populations that promote tumor progression, metastasis, and resistance to therapy. However, the mechanisms that sustain pathological myeloid expansion remain incompletely understood. In particular, it remains unknown whether solid tumors functionally reprogram hematopoietic stem and progenitor cells (HSPCs) to drive enhanced myeloid output and if bone-derived signals can regulate tumor-associated hematopoietic remodeling. In murine models of primary and metastatic breast cancer, tumor progression induced the remodeling of the hematopoietic compartment, characterized by the expansion of HSPCs, enhanced myeloid differentiation, and systemic accumulation of myeloid populations. …

Endoscopic Versus Catheter-Based Minimally Invasive Evacuation Of Spontaneous Supratentorial Intracerebral Hemorrhage: A Systematic Review And Meta-Analysis, Shaan Patel, Shiva A Nischal, Kush M Kale, Angelette Mendonca, Keenan Piper, Pious D. Patel, Michael R. Gooch, Stavropoula Tjoumakaris, Pascal M. Jabbour

Department of Neurosurgery Faculty Papers

Minimally invasive surgery (MIS) for spontaneous supratentorial intracerebral hemorrhage (sICH) includes endoscopic evacuation and catheter-based evacuation (aspiration or drainage ± thrombolysis), but comparative performance remains uncertain. We performed a systematic review and meta-analysis comparing MIS approaches. PubMed, Embase, and CENTRAL were searched (December 2025) for studies in adults undergoing endoscopic or catheter-based MIS for supratentorial sICH. Random-effects meta-analysis was conducted. Prespecified subgroup analyses stratified catheter-based techniques by thrombolysis use. Risk of bias and certainty of evidence was assessed. Twenty-nine studies (8221 patients; 5041 endoscopic; 3180 catheter-based) were included. Endoscopic evacuation was associated with lower mortality (RR 0.64; 95% CI: 0.47–0.87; …

Larotrectinib In Trk Fusion Differentiated Thyroid Carcinoma: Updated Trial Data, Steven Waguespack, Marcia Brose, Jessica J Lin, Ray Mcdermott, Mohammed Almubarak, Jessica Bauman, Michela Casanova, Shivaani Kummar, Se-Hoon Lee, Damian Rieke, Do-Youn Oh, Changsong Qi, Natascha Neu, Domnita-Ileana Burcoveanu, Chiara Mussi, Alexander Drilon, David Hong, Maria Cabanillas

Department of Medical Oncology Faculty Papers

Larotrectinib is a first-in-class, highly selective, central nervous system-active tropomyosin receptor kinase (TRK) inhibitor approved for tumour-agnostic use in TRK fusion cancer. It has previously demonstrated rapid and durable disease control and favourable safety in patients with advanced TRK fusion thyroid carcinoma (TC). After an additional 4 years of follow-up with the inclusion of two additional patients, and utilising an independent review committee (IRC) to assess overall response rate (ORR), we report updated pooled analyses from three phase 1-2 larotrectinib clinical trials, focusing only on patients with TRK fusion differentiated TC (DTC). The primary endpoint was the IRC-determined ORR per …

Effect Of Hydrogel Rectal Spacers On Bladder Wall And Regional Substructure Dose In Prostate Cancer Patients Undergoing Volumetric Modulated Arc Therapy With Simultaneous Integrated Boost: A Retrospective Planning Study, Geronimo Sosa

Masters Projects

Purpose: Hydrogel rectal spacers reduce rectal dose during prostate radiotherapy, but their effect on bladder wall dose is not well characterized, particularly with volumetric modulated arc therapy with simultaneous integrated boost (VMAT-SIB). This study evaluated the effect of spacer placement on whole and regional bladder wall dose.

Methods: Twenty-nine patients treated with VMAT-SIB (70 Gy in 28 fractions) were analyzed retrospectively: 9 with and 20 without a spacer. The bladder wall was defined as the whole bladder minus a 3-mm inner margin. Primary endpoints were D0.03 cc and D1 cc; secondary endpoints included D2 cc, D3 cc, D10 cc, volume-based …

A Topology-Aware Extension Of Guttae Area Ratio In Fuchs Endothelial Corneal Dystrophy, Molly Orlick, Henry Bair

Wills Eye Hospital Papers

No abstract provided.

Non-Enzymatic Hepatic Abhd6 Interacts With Akt-Foxo1 Axis To Regulate Metabolic Health, Guannan Li, Laurence T Maeyens, Jiyuan Yin, Jan-Bernd Funcke, Chanmin Joung, Ruizhen Li, Ziying Xu, Ting Wu, Xin Li, Nisi Jiang, Mbolle Ekane, Maria Paula Lopez, Pengju Cao, Sijia He, Adam B Salmon, S R Murthy Madiraju, Marc Prentki, Juli Bai, James F Nelson, Xianlin Han, Yi Zhu, Shangang Zhao

Children’s Nutrition Research Center Staff Publications

The enzymatic role of ABHD6 in insulin secretion and resistance is well documented. However, its non-enzymatic function, especially its effects on metabolic health, including selective hepatic insulin resistance and metabolic dysfunction-associated steatotic liver disease (MASLD), is poorly understood. To define the role of ABHD6 in liver physiology, we generated liver-specific ABHD6 knockout mice, as well as liver-specific native and enzymatically inactive mutant ABHD6 overexpression mouse models. We demonstrate that non-enzymatic ABHD6 contributes to the regulation of selective hepatic insulin resistance and MASLD progression. Mechanistically, we show that ABHD6 localizes to the nucleus and interacts with Akt/FoxO1 axis to regulate insulin …

Assessing The Feasibility Of A Self-Management Intervention For Individuals With Advanced Prostate Cancer And Comorbid Type Ii Diabetes Mellitus, Amy L. Shaver, Christina Steinbock-Malfer, William Tester, Patrick Mille, William K. Kelly, Kevin K. Zarrabi, Costas D. Lallas, Mihir M. Shah, Rose Dimarco, Emily Brand, Shawntel Brown, Swapnil Sharma, Nikita Nikita, Cindy Cogen, Scott W. Keith, Grace Lu-Yao

Kimmel Cancer Center Faculty Papers

BACKGROUND: Many older adults with cancer have at least one comorbidity. Type II diabetes mellitus (T2DM) is a common comorbidity among patients with prostate cancer (PC) and represents an important consideration in this population. Comorbid T2DM can negatively impact cancer-specific outcomes for patients, suggesting the need for better glycemic management, especially for patients on active cancer treatment. The goal of this modified Diabetes Self-Management Education Services (mDSMES) pilot study was to provide patients with the opportunity to learn methods of diabetes self-management, including how to manage their glucose levels, improve their understanding and utilization of medication to promote improvements in …

Machine Learning In Flow Cytometry For Acute Myeloid Leukemia Diagnosis: A Scoping Review, Katrina Jezzela M. Dela Pena Md, Mls (Ascp)

Other Specialties

Manuscript version:

Introduction: Flow cytometry is essential for the diagnosis of acute myeloid leukemia (AML), but conventional analysis is labor-intensive, operator-dependent, and increasingly complex. Machine learning (ML) may support automated analysis; however, its readiness for clinical implementation remains unclear. This scoping review mapped ML approaches applied to flow cytometry for AML-related diagnosis.

Methods: PubMed was searched for English-language primary studies applying artificial intelligence, ML, or deep learning to human flow cytometry data for AML diagnosis or classification. Eligible studies reported diagnostic performance metrics. Study characteristics, preprocessing, data representation, model architecture, validation strategy, performance metrics, interpretability, and implementation considerations were descriptively …

Association Between Stress Mindset, Psychological Symptoms, And Psychosocial Risk In Liver Transplant Patients, Sarah Kay Brill

Dissertations

Psychosocial functioning is a central component of liver transplant evaluation, yet less is known about how cognitive factors, such as stress mindset, relate to transplant readiness. The present study examined the association between stress mindset and psychosocial risk, as well as its relationship with depressive symptoms, anxiety, and perceived stress among patients undergoing liver transplant evaluation. Patients included 62 adults completing standard pre-transplant assessment measures, including the Stress Mindset Measure–Specific (SMM-S), Stanford Integrated Psychosocial Assessment for Transplantation (SIPAT), Patient Health Questionnaire-9 (PHQ-9), Generalized Anxiety Disorder-7 (GAD-7), and Perceived Stress Scale (PSS). Hierarchical logistic regression analyses indicated that stress mindset was …

A Cooking Skills Intervention For Long-Term Weight Loss In Young Adults With Intellectual Disabilities: Rationale And Design For A Randomized Trial., Lauren T. Ptomey, Jessica C. Danon, Delwyn Catley, Richard A. Washburn, Amy Bodde, Francisco J. Diaz, Brian C. Helsel, Anna M. Rice, Joseph R. Sherman, Madison Koester, Walker S. Mckinney Ph.D., Joseph E. Donnelly

Manuscripts, Articles, Book Chapters and Other Papers

Young adults with intellectual disability (ID) are an underserved population with a high prevalence of obesity, obesity-related health conditions, and reduced ability to complete instrumental and basic activities of daily living (I/ADLs). After leaving the structured environment of public school, many young adults with ID spend more time at home or in day programs, begin living more independently, or enter the workforce. These transitions may increase reliance on fast or processed foods and reduce opportunities for physical activity, contributing to accelerated weight gain. Previous research has demonstrated clinically meaningful short- and long-term weight loss (18-24 months) in adults with mild-to-moderate …

Leveraging Administrative Health Data To Capture Rare Adverse Drug Reactions: Identifying Pediatric Patients With Trimethoprim-Sulfamethoxazole Acute Respiratory Distress Syndrome., Keith Feldman, Jenna Miller, Katherine Doane, Laura Loftis, James W. Antoon, Kevin J. Downes, Jennifer Goldman

Manuscripts, Articles, Book Chapters and Other Papers

Rare adverse drug reactions (ADRs) are underrecognized and underreported in the electronic medical record (EMR). These events often require clinical review, making systematic identification challenging. The study aim was to develop an approach to prioritize identification and validation of a rare ADR to trimethoprim-sulfamethoxazole causing acute respiratory distress syndrome (TMP-SMX ARDS) across medical institutions. We developed a clinical phenotype based on 2 local TMP-SMX ARDS cases mapped to standardized elements of a national comparative healthcare database (PHIS). We validated identification of TMP-SMX ARDS at scale across medical institutions. A set of scoring criteria was created to prioritize cases and generate …

Hyperadhesive Von Willebrand Factor Contributes To Pathogenesis Of Preeclampsia, Yajuan Wang, Chenyu Wang, Katie L Houck, Xiaoli Gao, Yuanyuan Chen, Xin Xu, Xue Zhao, Miguel A Cruz, Shu Zhang, Chester Q Li, Fengxia Xue, Min Li, Swati Shree, Jing-Fei Dong, Cha Han

Children’s Nutrition Research Center Staff Publications

Background: Preeclampsia is the most common complication of pregnancy, significantly affecting maternal and fetal health, and is characterized by placental and systemic endotheliopathy. Patients with preeclampsia have elevated levels of VWF (von Willebrand Factor), which is associated with poor clinical outcomes. However, whether VWF serves as a marker for endotheliopathy or contributes to the pathogenesis of preeclampsia remains poorly understood.

Methods: We investigated the role of hyperadhesive VWF in the development of preeclampsia by studying patients, evaluating mouse models, and performing in vitro experiments.

Results: We show that patients develop VWF- and fibrin-rich thrombosis in the placenta and have significantly …

All-Cause And Cause-Specific Mortality In Gambling Disorder: Evidence From A Nation-Wide Matched And Sibling Cohort Study In Taiwan, Yang-Chieh Brian Chen, Chih-Wei Hsu, Liang-Jen Wang, Mu-Hong Chen, Yao-Hsu Yang, Chih-Sung Liang, Edward Chia-Cheng Lai

Children’s Nutrition Research Center Staff Publications

Background and aims: Gambling disorder (GD) has been linked to suicidal ideation and suicide deaths; however, evidence on all-cause and cause-specific mortality-particularly in Asian populations-remains limited. Using a retrospective cohort study based on nationwide matched and sibling cohort, we investigated all-cause and cause-specific mortality risk in patients with GD.

Design, setting and participants: A retrospective cohort study was conducted using 2000-2022 data from Taiwan's National Health Insurance Research Database. A cohort of 961 individuals diagnosed with GD was identified. An age- and sex-matched control cohort (n = 3,844) and an unaffected sibling cohort (n = 675) were constructed. Cumulative survival …

Proteomic Signatures Of 3-Year Progression From Impaired Fasting Glucose To Diabetes: The Atherosclerosis Risk In Communities (Aric) Study, Mary R Rooney, Justin B Echouffo Tcheugui, Jingsha Chen, Keenan A Walker, Christie M Ballantyne, Eric Boerwinkle, Tanika N Kelly, Chiadi E Ndumele, James S Pankow, Morgan E Grams, Wendy S Post, Peter J Ganz, Alexis C Wood, Jerome I Rotter, Elizabeth Selvin, Josef Coresh

Faculty, Staff and Students Publications

Objective: To identify proteomic signatures underlying 3-year progression from impaired fasting glucose (IFG) to diabetes.

Research design and methods: We examined IFG progression in the Atherosclerosis Risk in Communities (ARIC) study from visit 2 (1990-1992) to visit 3 (1993-1995). We tested associations of 4,955 plasma proteins (SomaScan version 4.0) with ∼3-year progression from IFG (FG 100-125 mg/dL without diabetes) to diabetes (diagnosis, medication, or FG ≥126 mg/dL) using logistic regression models adjusted for demographics, cardiometabolic risk factors, and baseline glucose with Bonferroni correction (P < 10-5). We explored biological pathways enriched among the top proteins and calculated improvements in prediction (ΔAUC and net reclassification using 3-year risk thresholds of 6% and 15% in 80% training and 20% internal validation subsamples). We validated results in the Multi-Ethnic Study of Atherosclerosis (MESA) cohort.

Results: There were 3,786 ARIC participants with IFG (mean [SD] age 57 [6] years, 52% female, …

Colocalization Of Eqtls With Type 2 Diabetes And Glycemic Traits Using Whole-Genome Sequences In Diverse Populations From The Nhlbi Trans-Omics In Precision Medicine (Topmed) Program, Ningyuan Wang, Daniel A Dicorpo, Yixin Zhang, Erica Kleinbrink, Donna K Arnett, John Barnard, John Blangero, Donald W Bowden, April P Carson, Yii-Der Ida Chen, Mina K Chung, Joanne E Curran, Dawood Darbar, Ravindranath Duggirala, Patrick T Ellinor, Diane Fatkin, Myriam Fornage, Nancy Heard-Costa, Jiang He, Lifang Hou, Sharon L R Kardia, Charles Kooperberg, Ruth J F Loos, David D Mcmanus, Braxton D Mitchell, Ryan L Minster, Kari E North, Bruce M Psaty, Laura M Raffield, Susan Redline, Stephen S Rich, Dan Roden, Jerome I Rotter, Moore B Shoemaker, Jonathan D Smith, David R Van Wagoner, Francois Aguet, Kristin Ardlie, Joshua C Bis, Jennifer A Brody, Brian E Cade, Clary B Clish, Paul S De Vries, James S Floyd, Barry I Freedman, Stacey Gabriel, Robert E Gerzsten, Mark O Goodarzi, Charles Gu, Xiuqing Guo, Namrata Gupta, Susan R Heckbert, Sarah Hsu, Yi-Jen Hung, Rita R Kalyani, Tanika N Kelly, Gregory L Kinney, Changwei Li, Simin Liu, Yongmei Liu, Donald M Lloyd-Jones, Joann E Manson, Rasika A Mathias, Josep M Mercader, Alanna C Morrison, Take Naseri, Suna Onengut, Nicholette D Palmer, Patricia A Peyser, Qibin Qi, Sridharan Raghavan, Alex P Reiner, Mary R Rooney, Magdalena Sevilla-Gonzalez, Chloe Sarnowski, Joshua D Smith, Jennifer A Smith, Nicole L Spartano, Usman Tahir, Kent D Taylor, Deirdre K Tobias, Russel P Tracy, Satupa'itea Viali, Heming Wang, Alexis C Wood, Lisa R Yanek, Wei Zhao, Yinan Zheng, Josée Dupuis, Ching-Ti Liu, Robert Sladek, Jennifer Wessel, James B Meigs, Alisa K Manning, Nhlbi Trans-Omics For Precision Medicine (Topmed) Consortium

Faculty, Staff and Students Publications

Large-scale multiancestry genome-wide association studies have identified hundreds of loci associated with type 2 diabetes (T2D) and glycemic traits, yet imputed genotyping arrays limit the detection of low-frequency and rare variants. Whole-genome sequencing (WGS) offers a more complete view of genetic variation, especially across diverse populations. We analyzed high-coverage (38×) WGS data from 21,913 T2D case subjects, 61,036 control subjects, and up to 50,011 individuals with no diabetes with fasting glucose, fasting insulin, and HbA1c from the National Heart, Lung, and Blood Institute Trans-Omics for Precision Medicine Program. We performed single-variant association testing, conditional analysis, fine-mapping, and Bayesian colocalization to …

Ai-Driven Segmentation And Volumetric Response Modeling Of Liver Regions To Radiotherapy, Aashish Chandra Gupta

Dissertations and Theses (Open Access)

In liver-directed radiotherapy (RT), liver regions receiving higher doses typically undergo atrophy while contralateral/adjacent lower-dose regions may exhibit compensatory hypertrophy through regeneration of healthy tissue. Optimizing the RT plan to promote regional hypertrophy while minimizing the risk of developing atrophy has the potential to enhance post-RT liver function and long-term survivorship. However, current clinical practice largely relies on global liver dose-volume metrics during RT-planning, which may obscure favorable dose-response correlation and limit actionable guidance for clinicians. Therefore, we hypothesized that post-RT regional liver response is governed by a combination of region-specific dose-volume and patient clinical features, and that these responses …

"I Can See Where This Is Taking Me": Medical Students' Perceptions Of Humanities Courses At Aga Khan University, Kenya, Catherine Gathu, Marthaclaire Zammit, Urvi Saboo, Robert Opoka

Family Medicine, East Africa

Background Humanities courses in medical training are increasingly recognized as essential for developing empathetic, reflective and socially responsive physicians. Although well-established globally, their integration into medical education in African contexts remains limited. In Kenya, humanities are often peripheral within curricula dominated by biomedical sciences and clinical medicine. Aga Khan University (AKU), Nairobi, has introduced a novel medical curriculum that embeds seven core humanities courses as central components of the initial phase of its MBChB program. This study explored students’ perceptions and lived experiences of these humanities courses.

Methods A retrospective descriptive study using an embedded mixed-methods design was conducted among …

Impact Of Trisomy 21 On Post Pull-Through Enterocolitis And Bowel Function In Children With Hirschsprung Disease: A Pcplc Analysis., Marshall W. Wallace, Scott S. Short, Rachel C. Crady, Ron W. Reeder, Hira Ahmad, Kelly Austin, Andrea Badillo, Casey M. Calkins, Megan M. Durham, Julie R. Fuchs, Christopher Gayer, Julia E. Grabowski, Jamie C. Harris, Charles R. Hong, Ankur Rana, Rebecca M. Rentea, Nelson Rosen, Payam Saadai, Caitlin A. Smith, K Elizabeth Speck, Cristine S. Velazco, Richard J. Wood, Michael D. Rollins

Manuscripts, Articles, Book Chapters and Other Papers

INTRODUCTION: We evaluated whether Trisomy 21 (T21) affected bowel management use, ability to toilet train for stool, and rates of Hirschsprung-Associated Enterocolitis (HAEC) in children with Hirschsprung disease (HD). We hypothesized that T21 would be associated with increased rates of HAEC, bowel management program (BMP) use, and delayed toilet training for stool.

METHODS: Children with HD in the Pediatric Colorectal and Pelvic Learning Consortium (PCPLC) database who underwent primary pull-through were included and stratified by T21 status: HD only versus HD + T21. Children requiring a redo pull-through, initially managed with a stoma, or those who had inadequate follow-up were …

Extending Genome-Wide Association Studies To Admixed Cohorts With High Degrees Of Relatedness, Taotao Tan, Alejandra Vergara-Lope, José Jaime Martínez-Magaña, Nirav N Shah, Yi-Sian Lin, Kai Yuan, Jaime Berumen, Jesus Alegre-Díaz, Pablo Kuri-Morales, Roberto Tapia-Conyer, Joel Gelenter, Janitza L Montalvo-Ortiz, Wei Zhou, Jason M Torres, Elizabeth G Atkinson

Duncan NRI Faculty and Staff Publications

Admixed populations comprise a large portion of the human population worldwide, but are often excluded from genome-wide association studies (GWASs) due to analytic challenges. Our group developed Tractor, a local-ancestry-informed GWAS tool designed for admixed samples that produces accurate ancestry-specific effect sizes and boosts the discovery power to identify ancestry-enriched loci. However, Tractor operates under an assumption of unrelated samples. Here, to address this gap, we propose Tractor-Mix, which allows for well-calibrated association studies in datasets containing admixed samples with relatedness. Extensive simulations show that this method is competitive with other state-of-the-art approaches that do not produce ancestry-specific results. Empirical …

Quantitative Imaging Of Pyruvate Metabolism In A Patient With Anaplastic Thyroid Cancer, James A Bankson, Joshua S Niedzielski, Collin J Harlan, Yunyun Chen, Christopher M Walker, Philip L Lorenzi, Lin Tan, Vikas Kundra, Matthew E Merritt, Mukundan Ragavan, Dawid Schellingerhout, Renjie He, Yao Ding, Sahana Datar, Qing Wang, Christine B Peterson, Clifton D Fuller, Vlad C Sandulache, Stephen Y Lai

Faculty, Staff and Students Publications

Purpose: Magnetic resonance imaging using hyperpolarized (HP) [1-13C]-pyruvate enables assessment of pyruvate metabolism in vivo and offers new insight into metabolic changes in response to cancer therapy. Widely used semi-quantitative metrics of pyruvate metabolism can be affected by physiological factors that are extrinsic to intracellular metabolism. A validated pharmacokinetic (PK) model for analysis of intracellular pyruvate metabolism is needed to enhance the accuracy of quantitative metrics and clinical translation of metabolic MRI using HP pyruvate.

Methods: A PK model with two physical compartments and two chemical pools was developed to analyze the conversion of labeled pyruvate into lactate in vitro. …

Dupilumab Versus Placebo In Adults And Adolescents With Eosinophilic Gastritis (Degas): A Double-Blind, Placebo-Controlled, Phase 2, Multicentre, Randomised Controlled Trial, Nirmala P Gonsalves, Evan S Dellon, Kara L Kliewer, Tetsuo Shoda, Regina Yearout, Seema S Aceves, Nicoleta C Arva, John A Besse, Julie M Caldwell, Mirna Chehade, Amaziah Coleman, Margaret H Collins, Sara Anvari, Gary W Falk, Sandeep K Gupta, Girish Hiremath, David A Katzka, Paneez Khoury, John Leung, Calies Menard-Katcher, Paul Menard-Katcher, Kathryn A Peterson, Maria A Pletneva, Amanda K Rudman Spergel, Jonathan M Spergel, Tatyana Vaysman, Joshua B Wechsler, Benjamin L Wright, Guang-Yu Yang, Xue Zhang, Meijian Zhou, Ashish Bansal, Bram P Raphael, Amr Radwan, Jennifer Maloney, Antonio Martin, Yamo Deniz, Glenn T Furuta, Lisa J Martin, Marc E Rothenberg

Faculty, Staff and Students Publications

Background: Eosinophilic gastritis currently has no approved treatments and is postulated to be driven by type 2 inflammation. Dupilumab blocks type 2 cytokines IL-4 and IL-13 and has efficacy in multiple diseases characterised by type 2 inflammation, including eosinophilic oesophagitis. We aimed to assess the efficacy and safety of dupilumab in patients with eosinophilic gastritis.

Methods: DEGAS was a proof-of-concept, phase 2, multicentre, randomised controlled trial consisting of a 12-week, double-blind, placebo-controlled period, followed by a 24-week open-label extension period. Patients aged 12-70 years from 11 hospitals in the USA with histologically active eosinophilic gastritis (≥30 eosinophils per high-power field …

Are We Winning At Twinning? Persistent Cni Use In Identical Kidney Transplants., Nicholas S. Herrera, Shivani Wadnerkar, Diane M. Cibrik

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: Calcineurin inhibitors (CNIs) revolutionized kidney transplantation by reducing acute rejection rates. Identical twin kidney transplantation is the only setting in which the allograft is immunologically indistinguishable from self, yet CNI use persists. We characterized CNI utilization across end-stage kidney disease etiologies and examined whether CNI exposure was associated with reduced rejection or improved death-censored graft survival (DCGS).

METHODS: We performed a retrospective cohort study using scientific registry of transplant recipients data (January 2000-August 2025). Among 255 adult identical twin kidney transplant recipients, discharge regimens were categorized by CNI use; Firth penalized Cox regression was the primary method for 10-year …

Source-Specific Nitrate And Nitrite Intake And Bladder Cancer: Findings From The Danish Diet, Cancer And Health Cohort, Dorit W. Erichsen, Cecilie Kyrø, Jörg Schullehner, Susanne Rosthøj, Catherine P. Bondonno, Liezhou Zhong, Ole Raaschou-Nielsen, Pratik Pokharel, Torben Sigsgaard, Peter Fjeldstad Hendriksen, Frederik Dalgaard, Christina Dahl, Jonathan M. Hodgson, Christina C. Dahm, Anja Olsen, Anne Tjønneland, Nicola P. Bondonno

Research outputs 2022 to 2026

Introduction Nitrate and nitrite, present in ground and drinking water, as well as foods, may contribute to bladder cancer through the formation of carcinogenic N -nitrosamines. However, risk likely depends on both the source and endogenous nitrosating factors. Methods Among participants of the Danish Diet, Cancer, and Health Cohort (N = 54,610) with no history of cancer, source-specific nitrate and nitrite intakes (drinking water, plant sources, naturally occurring animal sources, and additive-permitted meat sources) were estimated from national water monitoring data and food frequency questionnaires using food databases. Bladder cancer cases were ascertained through the Danish Cancer Registry. Multivariable-adjusted Cox …

Select Plasma Oxylipins As Potential Biomarkers Of Effective Indomethacin Treatment Response In Preterm Infants With Patent Ductus Arteriosus., Khanh C K Nguyen, Cindy H T Yeung, Allison Scott, Thomas J. Velenosi, Tamorah Lewis

Manuscripts, Articles, Book Chapters and Other Papers

OBJECTIVES: Patent ductus arteriosus (PDA) is one of the most common heart conditions in preterm infants, and indomethacin treatment is used for PDA closure. However, its efficacy varies among patients. This pilot study aimed to identify novel metabolic biomarkers to predict effective indomethacin response in infants with PDA.

METHODS: Preterm infants with PDA <  34 weeks gestational age were recruited and treated with indomethacin. Plasma and urine samples were collected before and 2-7 days after initial treatment. Longitudinal targeted oxylipin and untargeted metabolomics analysis were performed on plasma and urine samples.

RESULTS: Among 17 infants, 12 were responders and 5 non-responders to indomethacin treatment. Before the treatment, four plasma oxylipins: 12,13-DiHOME, 9,10-DiHOME, 15,16-DiHODE, and 9,10-DiHODE were significantly higher in responders compared to non-responders (P <  0.05). Following treatment, these oxylipins decreased in responders but remained stable in non-responders. Urinary 12,13-DiHOME showed an opposite trend, with lower baseline concentrations in the responders.

CONCLUSIONS: Pre-treatment plasma levels of four oxylipins were associated with effective PDA response to …