Gastroenterology Commons^™

The Colonic Crypt: Cellular Dynamics And Signaling Pathways In Homeostasis And Cancer, Anh L. Nguyen, Molly A. Lausten, Bruce M. Boman

College of Life Sciences Faculty Papers

The goal of this review is to expand our understanding of how the cellular organization of the normal colonic crypt is maintained and elucidate how this intricate architecture is disrupted during tumorigenesis. Additionally, it will focus on implications for new therapeutic strategies targeting Epithelial-Mesenchymal Transition (EMT). The colonic crypt is a highly structured epithelial unit that functions in maintaining homeostasis through a complex physiological function of diverse cell types: SCs, transit-amplifying (TA) progenitors, goblet cells, absorptive colonocytes, Paneth-like cells, M cells, tuft cells, and enteroendocrine cells. These cellular subpopulations are spatially organized and regulated by multiple crucial signaling pathways, including …

National Alliance Of Sickle Cell Centers Consensus Standards For Transition To Adult Care In Sickle Cell Disease, Stephanie Howe Guarino, Akshat Jain, Mohan Madisetti, Kenneth Rivlin, Payal C. Desai, Julie Kanter, Sophie Lanzkron, Deepa Manwani

Division of Gastroenterology and Hepatology Faculty Papers

Sickle cell disease (SCD), an autosomal recessive hemoglobinopathy, affects ∼100 000 people in the United States.1 The process of transitioning from pediatric to adult SCD health care systems can be disjointed and poorly coordinated, contributing to the high morbidity and mortality seen in this population. There is no universally accepted definition of a successful SCD care transition, nor are there existing standards and recommendations for SCD clinicians. National Alliance of Sickle Cell Centers (NASCC) uses a described modified Delphi process to reach consensus among its members, through which we defined standards and recommendations for transitioning care from pediatric to adult …

The Brescia International Multidisciplinary Consensus Guidelines On The Optimal Pathology Assessment And Multidisciplinary Pathways Of Non-Pancreatic Neoplasms In And Around The Ampulla Of Vater (Peripan), Mohammad Abu Hilal, Bas A Uijterwijk, Daniël H L Lemmers, Boris V Janssen, Marc G Besselink, Denise Bianchi, Arantza Fariña, Noriyoshi Fukushima, Anthony J Gill, Seung-Mo Hong, Alyssa Krasinskas, Claudio Luchini, Laura Melocchi, Giulio Rossi, Aldo Scarpa, Olca Basturk, Deyali Chatterjee, Angela Chou, Irene Esposito, Roger Feakins, Bas Groot Koerkamp, Ralph H Hruban, Stefano La Rosa, Chanjuan Shi, Aatur Singhi, Joanne Verheij, Huamin Wang, Sergio Alfieri, Fabio Ausania, Adnan Alseidi, Marco J Bruno, Ugo Boggi, Claudio Bnà, Christos Dervenis, Massimo Falconi, Michele Ghidini, Jakob W Kist, Giovanni Marchegiani, Michele Milella, Roberto Salvia, Ajith Siriwardena, Hanneke Wilmink, Alberto Zaniboni, Shaimaa Al-Janabi, Maia Blomhoff Holm, Eva Roos, Naoki Sano, In Hye Song, Zeynep Tarcan, Gianpaolo Balzano, Isabella Frigerio, Alfredo Guglielmi, Giuseppe Malleo, Horacio Asbun, Volkan Adsay, Caroline Verbeke

Faculty, Staff and Student Publications

IMPORTANCE: The lack of multidisciplinary workflow guidelines and clear definitions and classifications for neoplasms in and around the ampulla of Vater results in inconsistencies affecting patient care and research.

OBJECTIVE: The PERIPAN international multidisciplinary consensus group aimed to standardize the multidisciplinary diagnostic workflow and achieve consensus on definitions and classifications in order to ensure proper classification and optimal diagnostic assessment and consequently to improve patient care and future research.

DESIGN: An international team of 43 experts (pathologists, surgeons, radiologists, gastroenterologists, oncologists) from 12 countries identified knowledge gaps, reviewed 37061 articles, and proposed recommendations using the Scottish Intercollegiate Guidelines Network methodology …

Single Balloon Enteroscopy In The Elderly, Marc J Zuckerman, Majd Michael, Mohammad Bashashati, Alok K Dwivedi, Nancy A Casner, Mohamed O Othman, Sherif E Elhanafi

Faculty, Staff and Students Publications

Background: Single-balloon enteroscopy (SBE) is a minimally invasive procedure to assess and treat small bowel pathologies. The most common use is to detect suspected small bowel bleeding: Insignificant gastrointestinal (GI) bleeding or iron deficiency anaemia (IDA). The safety and feasibility of SBE in the elderly has not been adequately studied.

Aim: To assess the safety and feasibility of both antegrade and retrograde SBE in elderly patients.

Methods: We performed a retrospective cohort study of all antegrade and retrograde SBE done at our center from March 2011 through May 2020. We collected patient's data including demographics, indications, findings, therapeutic interventions, and …

Gastrointestinal Fistulas-What Gastroenterologists Need To Know In 2025, Monjur Ahmed

Division of Gastroenterology and Hepatology Faculty Papers

Gastrointestinal fistulas are increasingly being encountered in our clinical practice because of the increased burden of Crohn's disease, bariatric surgeries, interventional endoscopic procedures, nonsurgical trauma, and war and disaster zones worldwide. Presentation depends on the location and specific type of the fistula. Symptomatic ones can have a tremendous impact on social life and can cause dehydration, electrolyte imbalance, malnutrition, increased morbidity, and mortality. Different imaging studies and endoscopic procedures are done to establish the diagnosis. Treatment modalities to close the fistula depend on the underlying disease and the type of fistula. They include conservative treatment, medical therapy, endoscopic interventions, and …

Case Report: Sarcina Ventriculi, A Masquerade Of Motility, Katherine Westbrook Cates, Catherine Hudson

School of Medicine Faculty Publications

Sarcina ventriculi is a rare bacterium that has the potential to cause severe disease in the gastric mucosa. According to our search, there are less than 100 prior published case reports. This case discusses a 69-year-old man who presented to the hospital with severe gastric distention noted on CT of the abdomen with intractable nausea and emesis, for which endoscopy was performed and ruled out gastric outlet obstruction, with biopsies resulting as S. ventriculi. This bacterium has previously been reported to cause gastric dysmotility, as well as severe side effects including gastric perforation.

Egg White Hydrolysate In Hypertension: A Mechanistic Investigation Of Gut Microbiota Dependent And Independent Pathways, Emerson David Nolasco

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Cardiovascular diseases are one of the leading causes of mortality worldwide in which hypertension is a risk factor. Present pharmacological interventions require long-term adherence to the therapy and are often associated with undesirable side effects. Moreover, treatments have overlooked the role of the microbiome in the development of hypertension. Egg white hydrolysate (EWH) has exhibited antihypertensive properties with potential to be used as a natural alternative for the prevention and management of hypertension. However, EWH peptide’s effect on the gut microbiome remains yet to be elucidated. Studies have described that a portion of the ingested protein can remain undigested as …

In Silico Prediction Of Cytotoxic T-Cell Epitopes From Helicobacter Pylori Virulence Factors Using An Immunoinformatics Approach, Demy Valerie Chacon, Kiana Alika Co, Daphne Noreen Enriquez, Aubrey Love Labarda, Reanne Eden Manongsong, Edward Kevin B. Bragais

Biology Faculty Publications

Background: Helicobacter pylori infects approximately half of the global population, leading to gastric and duodenal ulcers. Despite the availability of antibiotics, challenges such as patient reluctance, high treatment costs, and antibiotic resistance limit their effectiveness, making vaccination a promising alternative. This study used immunoinformatics to identify candidate epitopes for a multiepitope vaccine construct against H. pylori.

Material and methods: The protein variability server was utilized for conservation analysis. The epitopes were screened for antigenicity, allergenicity, toxicity, cross-reactivity, and population coverage. Selected epitopes were docked with their corresponding human leukocyte antigen (HLA) alleles, and thermodynamic quantities were determined. Five virulence …

Longitudinal Analysis Of Gut Microbiome And Metabolome Correlates Of Response And Toxicity With Idecabtagene Vicleucel, Satabdi Saha, Lubna Rehman, Abdur Rehman, Faezeh Darbaniyan, Donna M Weber, Melody Becnel, Mahmoud Gaballa, Sheeba K Thomas, Hans C Lee, Chia-Chi Chang, Reetakshi Arora, Meghan Menges, Salvatore Corallo, Marco L Davila, Frederick L Locke, Mark R Tanner, Sattva S Neelapu, Elizabeth J Shpall, Christopher R Flowers, Robert Z Orlowski, Robert R Jenq, Michael D Jain, Christine Peterson, Doris K Hansen, Neeraj Y Saini, Krina K Patel

Faculty, Staff and Student Publications

Increasing evidence suggests that the gut microbiome may influence the responses and toxicities associated with chimeric antigen receptor T-cell (CAR-T) therapy. We conducted whole-genome shotgun sequencing on stool samples (N = 117) collected at various times from patients with multiple myeloma (n = 33) who underwent idecabtagene vicleucel (ide-cel) anti-B-cell maturation antigen CAR-T therapy. We observed a significant decrease in bacterial diversity after ide-cel infusion, along with significant differences in the bacterial composition linked to therapy response and toxicities. Specifically, we found significant enrichment of Flavonifractor plautii, Bacteroides thetaiotaomicron, Blautia fecis, and Dysosmobacter species in ide-cel responders. A notable finding …

The Need For Targeted Prevention And Screening In Gastrointestinal Cancer Disparities, Jason C. Lin, John C. Lin, Joy Zhao

Division of Gastroenterology and Hepatology Faculty Papers

No abstract provided.

Risk Of Pancreatic Cancer In Glycemically Defined New-Onset Diabetes: A Prospective Cohort Study, Suresh T Chari, Bechien Wu, Camden Lopez, Eva Lustigova, Qiaoling Chen, Stephen K Van Den Eeden, Amethyst D Leimpeter, William Fisher, Amy Wood, Ashley S Alexander, John Valenta, Santhi Swaroop Vege, Erin E Carlson, Kari G Rabe, Phil A Hart, Lu Qian, Ying-Qi Zhao, Nadia Yosuf, Lynn Matrisian, Barbara Kenner, Jo Ann Rinaudo, Anirban Maitra, Ziding Feng

Faculty, Staff and Student Publications

Background & aims: The increased 3-year incidence of pancreatic cancer after new-onset diabetes observed in retrospective studies needs prospective validation. It is unknown whether incidence varies by race and ethnicity.

Methods: In a prospective, observational study using active real-time surveillance of electronic health records, we identified 18,838 adults 50 years or older with glycemically defined new-onset diabetes (GNOD). In this interim analysis, we report 3-year Kaplan-Meier estimates of the proportion diagnosed with pancreatic cancer after GNOD (absolute incidence [95% CI]) and associated standardized incidence ratio (SIR) by race and ethnicity, overall 3-year incidence of pancreatic cancer adjusting for racial distribution …

Increasing Colorectal Cancer Screening Rates For Patients Without Insurance, Andrea F. Day

Doctor of Nursing Practice Projects

Background: Colorectal cancer is a leading cause of cancer-related death in the United States (U.S.), ranking as second most prevalent overall. Despite many initiatives, screening rates remain low, especially among clinic patients without insurance. The lack of an evidence-based screening protocol exacerbates these issues and increases the risk of advanced cancer and death. Initial data showed that 0% of patients were screened according to recommended guidelines.

Purpose: The project implemented a standard screening protocol to increase colorectal cancer screening rates in a rural Alabama free clinic for patients ages 45-64 lacking insurance.

Project Design: This quality improvement …

Inflammatory Bowel Disease: Patient Journey And Cancer Pathology, Katie Contino, Ms

Student Papers, Posters & Projects

Inflammatory Bowel Disease is a relapsing-remitting autoimmune disease that affects the gastrointestinal tract. It consists of Crohn’s disease, which can affect the entire gastrointestinal system, and ulcerative colitis, which is limited to the colon. Inflammatory Bowel Disease has various different levels of severity that have different treatment and medication options once the diagnosis is confirmed with an endoscopic procedure. The treatment options range from daily medication to invasive surgical procedures. Specific diets are also used as a preventative measure to remain in remission. The intestinal damage inflicted to the epithelium increases the risk of developing colon cancer, specifically those with …

Early Recurrent Midgut Volvulus Post Ladd's Procedure In A Newborn: A Case Report, Nicole Clarke, Joanna Sajdlowska, John Paul Bustamante, Nishith Bhattacharyya

Rowan-Virtua School of Osteopathic Medicine Departmental Research

Ladd's procedure is the standard surgical intervention for intestinal malrotation. Although generally curative, rare cases of early postoperative complications, including adhesions or recurrent volvulus, can necessitate reoperation. We present the case of a full-term newborn girl who underwent emergent Ladd's procedure on Day 3 of life for malrotation with volvulus. She was discharged on postoperative Day 17 but returned the following day with recurrent bilious emesis. Imaging suggested partial obstruction. Exploratory laparotomy revealed recurrent volvulus with two twists at the duodenojejunal junction, which was successfully reduced. The patient recovered well and was discharged on postoperative Day 8. This case underscores …

Applying The Nonadoption, Abandonment, Scale-Up, Spread, And Sustainability (Nasss) Framework To Adapt The Champ App For Pediatric Feeding Tube Weaning: Application And Case Report., Dana Bakula, Alexandra Zax, Sarah T. Edwards, Kristina Nash, April Escobar, Rachel Graham, Amy Ricketts, Ryan Thompson, Sarah Bullard, Julianne Brogren, Leah Shimmens, Lori A. Erickson

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: Evidence-based tube feeding (TF) weaning involves reducing the volume of tube feeds to induce hunger, with interdisciplinary monitoring to allow for proactive medical, nutritional, and behavioral intervention as needed. This can be done outpatient; however, the current standard of care requires a high degree of medical monitoring and care coordination, which can be challenging to implement. The CHAMP App is a mobile app designed for remote patient monitoring of children born with congenital heart conditions who are at high risk for medical morbidity and mortality. The CHAMP App remote patient monitoring program would be ideally suited to improve medical …

Quality Over Quantity-Current Challenges Of Robotic Surgery In Poland, Marcin Kubiak, Jacek Doniec, S Vincent Grasso, Andrew Gumbs, Amir Nour Mohammadi, Katarzyna Sędłak, Zuzanna Pelc, Stanisław Góźdź, Wojciech Załuska, Artur Bachta, Paweł Rybojad, Kamil Torres, Timothy M Pawlik, Marek Zawadzki, Andrzej Budzyński, Karol Rawicz-Pruszyński

Rowan-Virtua School of Osteopathic Medicine Departmental Research

Since its introduction in 2010, a dynamic growth of robotic-assisted surgery (RAS) has been observed in Poland. The number of healthcare institutions implementing RAS has tripled in the last 36 months, with 80 surgical robots currently utilized on a national scale. While urological procedures dominate RAS utilization (73%), adoption in gynecology (12.2%) and gastrointestinal surgery (8.5%) is rising, driven by recent National Health Fund reimbursement policies. However, significant fragmentation and alarmingly low numbers of individual RAS procedures were identified: 47.7% of surgeons perform less than 40 cases annually. Parallel to expanding the robotic surgery reimbursement program, several standardized actions are …

Incidental Finding Of An Infarcted Epiploic Appendage Attached To The Sigmoid Colon, Ifeanyi K. Uche, Alec A. Hirsch

School of Medicine Faculty Publications

Background: Epiploic appendagitis is a condition usually caused by infarction of the epiploic appendages, small outpouchings of adipose tissue found on the serosal surface of the colon. Epiploic appendagitis is a rare cause of acute lower abdominal pain, but the condition does not have any specific presenting clinical features and is often misdiagnosed as acute diverticulitis, appendicitis, or other gastrointestinal disorder. Case Report: A 53-year-old female presented with abnormal uterine bleeding and pelvic pain and was seeking definitive surgical management. During the patient’s total laparoscopic hysterectomy with bilateral salpingo-oophorectomy, an infarcted epiploic appendage attached to the sigmoid colon was found. …

Whole-Exome Sequencing Identified Molecular Variants Linked To The Progression Of Gastric Precancerous Lesions In Patients From Southwestern Colombia—An Exploratory Approach., Lizeth Mejia-Ortiz, Jovanny Zabaleta, Jone Garai, Luis Eduardo Bravo, Andres Castillo

School of Graduate Studies Faculty Publications

No abstract provided.

Surveying Management Strategies For Pediatric Autoimmune Hepatitis, Lillie Baca

University Honors Theses

Pediatric autoimmune hepatitis (PAIH) is a long-term condition that requires ongoing treatment and regular monitoring. It is characterized by its elevation of liver enzymes, interface hepatitis, and the specific presence of circulating autoantibodies. There is a general lack of consensus on appropriate measures of diagnostic criteria, treatment medication, and beneficial practices for monitoring the disease. The existing literature contains several subtle discrepancies that challenge a practitioner's judgement for care management of children with autoimmune hepatitis. This study is a retrospective chart review aimed at understanding the current diagnostics, treatment, and long-term management strategies of PAIH at a single center. Also, …

Trem2 Depletion In Pancreatic Cancer Elicits Pathogenic Inflammation And Accelerates Tumor Progression Via Enriching Il-1Β+ Macrophages, Daowei Yang, Xinlei Sun, Hua Wang, Ignacio I Wistuba, Huamin Wang, Anirban Maitra, Yang Chen

Faculty, Staff and Student Publications

Background & aims: Pancreatic ductal adenocarcinoma (PDAC) has a complex tumor microenvironment enriched with tumor-associated macrophages. Triggering receptor expressed on myeloid cells 2 (TREM2) is highly expressed by a subset of macrophages in PDAC. However, the functional role of TREM2 in PDAC progression remains elusive.

Methods: We generated a novel transgenic mouse model (KPPC;Trem2-/-) that enables the genetic depletion of TREM2 in the context of spontaneous PDAC development. Single-cell RNA-sequencing analysis was used to identify changes in the tumor immune microenvironment on TREM2 depletion. We evaluated the impacts of TREM2 depletion on the tumor immune microenvironment to elucidate the functions …

Diagnostic Considerations For Gastrointestinal Stromal Tumors With Altered Immunophenotype Following Imatinib Treatment: A Case Report And Literature Review, Jihuan Chen, Liz M. Yang, Jonathan Somma, Yujun Gan, Zengying Wu, Zhiyan Fu

School of Medicine Faculty Publications

Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors in the gastrointestinal tract and have a high rate of recurrence and metastasis. Using an immunohistochemical (IHC) panel including KIT/CD117 and DOG1 allows for accurate diagnosis in more than 98% of cases. However, after tyrosine kinase inhibitor treatment, some cases can exhibit histologic dedifferentiation and loss of KIT/CD117 and DOG1 expression that may cause difficulty in confirming recurrent or persistent disease. We present such a case of an Imatinib treated, CD117 and DOG1 dual negative, metastatic GIST to the liver in a 55-year-old female which required molecular analysis to confirm …

A Case Report On Missed Case Of Lynch Syndrome With Pms2 Loss Of Expression At Extreme Age., Prajjwol Bhatta, Fatima Warraich, Tausif Syed, Venkat Arutla, Himal Kharel, Chengu Niu

Advances in Clinical Medical Research and Healthcare Delivery

Lynch syndrome is an autosomal dominant disorder affecting one of the mismatch repair (MMR) genes. Amsterdam and revised Bethesda criteria are used to identify individuals at risk for Lynch syndrome, but they have limited sensitivity. The CRC Risk assessment tool is effective in identifying high-risk individuals and mutation carriers of Lynch syndrome. Here, in this case report, we present an 84-year-old female with a positive family history of colon cancer in her mother and grandmother, presented in the clinic for a 3-year colonoscopy follow-up, who was found to have a 3 cm sigmoid lesion with central ulceration at 28 …

Drug-Induced Hypersensitivity Syndrome Resulting In Hepatotoxicity And Epstein-Barr Virus Reactivation Following Initiation Of Levetiracetam, Zechariah Jung, Xavier Zonna, Samuel J. Wlasowicz, Conor Banta, Lawrence Canale, Joseph Bielecki

Advances in Clinical Medical Research and Healthcare Delivery

A 28-year-old male with a past medical history of alcohol abuse had new-onset seizures suspected to be caused by alcohol use. Twelve days after starting levetiracetam for seizure prophylaxis, he began to develop a pruritic rash, darkening of his urine, periods of jaundice, and hot flashes that correlated with the timing of his levetiracetam dosing. He was subsequently found to have lymphocyte-predominant leukocytosis, elevated aminotransferases, and alkaline phosphatase. Following discontinuation of his levetiracetam, he was found to have positive Epstein-Barr virus (EBV) serology suggestive of reactivation. This case demonstrates levetiracetam as a rare cause of drug-induced hypersensitivity syndrome (DIHS) along …

Can Anemia Be A Prognostic Indicator To Scope For Gastroesophageal Junction Adenocarcinoma?, Ryan Tam, Neha Narayanan, Evan Basha, Joel Thompson

Advances in Clinical Medical Research and Healthcare Delivery

Gastroesophageal junction adenocarcinoma is a rapidly progressive disease that has a poor prognosis with a 5-year survival rate of 20%. It commonly presents with major symptoms of dysphagia and weight loss in addition to a long-standing history of reflux. As of now, screening for esophageal adenocarcinoma (EAC) is dependent on identifying risk factors which include a family history of Barrett’s esophagus and esophageal adenocarcinoma or patients with gastroesophageal reflux disease and at least one other risk factory for EAC such as age greater than 50 years, obesity or central adiposity, history of smoking, or male gender. Here, we present a …

Mirizzi Syndrome: A Case Report, Elizabeth Barr, Keng Moua, Kavitha Vemuri

Advances in Clinical Medical Research and Healthcare Delivery

Mirizzi syndrome is a rare complication of chronic gallstone disease that occurs when an impacted gallstone at the gallbladder infundibulum or cystic duct causes common extrinsic hepatic or common bile duct obstruction. Contrary to other gallstone pathologies where gallstones affect the respective location in which they are lodged, Mirizzi syndrome is unique in that it is characterized by extrinsic gallstone compression. Chronic gallstone disease most commonly leads to acute cholecystitis, acute cholangitis, or acute pancreatitis. The extrinsic compression of the common hepatic or common bile duct may lead to eventual erosion which increases the risk for a cholecystocholedochal or cholecystohepatic …

Hiding In The Midgut: A Case Of Small Bowel Diverticular Bleeding In An Elderly Female, Aagamjit Singh, Nishant Aggarwal, Faid Odish

Conference Presentation Abstracts

Introduction Diverticulosis in the colon is a common cause of lower gastrointestinal (GI) bleeding. Non-Meckel diverticula in the small bowel have been reported in the literature; however, they rarely cause significant bleeding. We present a case of an 88-year-old woman with a bleeding jejunal diverticulum that was diagnosed and treated with a push enteroscopy. Case Description An 88-year-old African-American female with a past medical history of colonic diverticulosis and atrial fibrillation on rivaroxaban presented with a 4-day history of melena. She reported having soft, black stools 2–3 times a day, associated with persistent epigastric discomfort and nausea. Her last dose …

Marathon Miles And Melena: Unmasking Acute Gastrointestinal Bleeding In An Endurance Athlete, Usman Bin Hameed, Mujtaba Moazzam, Nathanial Bartosek, Fady Banno, Naveen Reddy

Conference Presentation Abstracts

Gastrointestinal bleeding (GIB) is a recognized complication of endurance sports, particularly long-distance running. While most cases are mild and self-limited, studies indicate that up to 12% of ultramarathon participants experience occult bleeding. Severe or life-threatening GIB, such as ischemic colitis requiring surgery, has been reported but remains rare. Despite its potential significance, exercise-induced GIB remains poorly understood, with limited organized data on its prevalence and mechanisms. A 38-year-old male presented with a three-day history of melena following a recent marathon. Symptoms began with loose stools, progressing to tarry stools, accompanied by fatigue, exertional dyspnea, dizziness, and mild generalized abdominal discomfort. …

A Complex Case Of Tracheoesophageal Fistula Following Chemoradiation And Esophagectomy, Mujtaba Moazzam, Usman Bin Hameed, Fady Banno, Rocco Sbrocca, Ramona M. Berghea

Conference Presentation Abstracts

Tracheoesophageal fistula (TEF) is a pathological connection between the trachea and esophagus. It is a rare but serious complication following esophagectomy, particularly in patients who have undergone concurrent radiation therapy, with rates of 5-15%. TEFs often manifest with severe complications such as malnutrition, infections, and life-threatening bleeding, making them exceptionally difficult to manage. This case report highlights a rare presentation of TEF in a patient with esophageal adenocarcinoma treated with multimodal therapy. A 45-year-old male with stage III esophageal adenocarcinoma underwent concurrent chemoradiation, esophagectomy, and immunotherapy. Subsequent oligometastatic disease required further treatment, including radiofrequency ablation and Keytruda maintenance. The patient …

Analysis Of Myositis Development In Adults And Children With Inflammatory Bowel Disease, Yu Rim Park, Jamal Kriem

Conference Presentation Abstracts

Background/Objective Inflammatory bowel disease (IBD) is an autoimmune disorder that can present with a wide range of clinical manifestations spanning multiple organ systems. Myositis in patients diagnosed with IBD is an uncommon presentation, and the pathophysiology in this population is not well studied. Given the lack of research surrounding the natural history of myositis in IBD patients, we decided to investigate the demographics and medication use that may potentially serve as predictors of symptom development. We hypothesized increased rates of myositis development in patients on TNF-alpha inhibitors given anecdotal evidence in clinical practice and literature review of several clinical vignettes …

Efficacy And Safety Of Larotrectinib In Patients With Trk Fusion Gastrointestinal Cancer, Changsong Qi, Lin Shen, Thierry Andre, Hyun Cheol Chung, Timothy L Cannon, Elena Garralda, Antoine Italiano, Damian T Rieke, Tianshu Liu, Domnita-Ileana Burcoveanu, Natascha Neu, Chiara E Mussi, Rui-Hua Xu, David S Hong, Alexander Drilon, Jordan Berlin

Faculty, Staff and Student Publications

Background: Larotrectinib is the first-in-class, highly selective TRK inhibitor with demonstrated efficacy in various TRK fusion solid tumours. We report the efficacy and safety of larotrectinib in patients with TRK fusion gastrointestinal (GI) cancer.

Methods: Patients with TRK fusion GI cancer from NAVIGATE (NCT02576431) were included. Response was independent review committee (IRC)-assessed per RECIST v1.1.

Results: As of July 2023, 44 patients were enrolled. Tumour types included colorectal (CRC; n = 26), pancreatic (n = 7), cholangiocarcinoma (n = 4), gastric (n = 3), and one each of appendiceal, duodenal, oesophageal and hepatic cancers. Of the 26 patients …