Medical Specialties Commons^™

A Nanoengineered Topical Transmucosal Cisplatin Delivery System Induces Anti-Tumor Response In Animal Models And Patients With Oral Cancer, Manijeh Goldberg, Aaron Manzi, Amritpreet Birdi, Brandon Laporte, Peter Conway, Stefanie Cantin, Vasudha Mishra, Alka Singh, Alexander T Pearson, Eric R Goldberg, Sam Goldberger, Benjamin Flaum, Rifat Hasina, Nyall R London, Gary L Gallia, Chetan Bettegowda, Simon Young, Vlad Sandulache, James Melville, Jonathan Shum, Sonya E O'Neill, Erkin Aydin, Alex Zhavoronkov, Anxo Vidal, Atenea Soto, Maria Jose Alonso, Ari J Rosenberg, Mark W Lingen, Anil D'Cruz, Nishant Agrawal, Evgeny Izumchenko

Faculty, Staff and Students Publications

Despite therapeutic advancements, oral cavity squamous cell carcinoma (OCSCC) remains a difficult disease to treat. Systemic platinum-based chemotherapy often leads to dose-limiting toxicity (DLT), affecting quality of life. PRV111 is a nanotechnology-based system for local delivery of cisplatin loaded chitosan particles, that penetrate tumor tissue and lymphatic channels while avoiding systemic circulation and toxicity. Here we evaluate PRV111 using animal models of oral cancer, followed by a clinical trial in patients with OCSCC. In vivo, PRV111 results in elevated cisplatin retention in tumors and negligible systemic levels, compared to the intravenous, intraperitoneal or intratumoral delivery. Furthermore, PRV111 produces robust anti-tumor …

The Laws Of The Dead, Gillian Naro, Md, Med, Marie-Laure Flamer, Md

The Medicine Forum

George Washington suddenly fell ill with a sore throat and labored breathing at his estate in 1799. Initial management consisted of a "mixture of molasses, vinegar and butter," that was followed by “sage, tea and vinegar.” With no signs of clinical improvement, his doctors were called to his bedside. As was standard medical care at the time and thought to be beneficial in various afflictions, he was “bleed” more than 2L of blood in an attempt to restore his good health. The three doctors overseeing the bleeding process noticed the General become weaker despite their best efforts. His breathing became …

Internal Medicine Residents’ Experience With Using Handheld Ultrasound Machines In Point-Of-Care Ultrasonography, Michael Dong, Md, Tudor Sturzoiu, Md, Fred Karaisz, Max Ruge, Md

The Medicine Forum

Point-of-care ultrasonography (POCUS) is defined as the acquisition and interpretation of ultrasonographic images generated by the clinician at the bedside. The advent of handheld machines has increased access and practical application of ultrasound technology in internal medicine training and medical education. The most common system involves a single portable ultrasound probe that connects to a smartphone or tablet, and storage of images are stored via cloud-based technology. We discuss our experience with POCUS using handheld ultrasound machines in the Thomas Jefferson University Hospital academic setting.

Pulmonary Metastases Of Basal Cell Adenocarcinoma Presenting As Hemoptysis, Matthew Dimeglio, Do, Mba, Mark Mallozzi, Md, Prarthna Kulandaisamy, Md, Julie Barta, Md, Jennifer Johnson, Md

The Medicine Forum

Basal Cell Adenocarcinoma (BCAC) is a rare malignancy, only accounting for approximately 2% of all salivary neoplasms. Considered the malignant counterpart of basal cell adenoma, it most commonly presents at 60 years of age without gender predilection. Sites of involvement frequently includes the parotid gland, but sites in the minor salivary glands, nasopharynx, buccal mucosa, and tongue have also been reported. Often regarded as an indolent malignancy, BCAC can occasionally cause invasive disease and infrequently, metastatic disease. Among all solid tumors, endobronchial metastases is quite a rare occurrence, contributing to approximately 4% of endobronchial biopsies4. Most common sites of metastases …

Spontaneous Tumor Lysis Syndrome In Undifferentiated Pelvic Solid Tumor With Associated New Onset Atrial Flutter: A Case Report, Sameep Thapa, Md, Max Ruge, Md, Tamar Wolinsky Md

The Medicine Forum

Tumor lysis syndrome (TLS) is an oncologic emergency that is caused by electrolyte derangements from the lysis of malignant tumor cells. The syndrome consists of several laboratory abnormalities including hyperuricemia, hyperkalemia, hyperphosphatemia, and hypocalcemia1,2. When these lab findings are associated with end-organ damage such as acute renal failure, seizures, or cardiac dysrhythmias amongst others, it is known as clinical TLS3. TLS is more commonly associated with hematological malignancies given their tendency of rapid cellular turnover. The most common culprits include acute lymphocytic leukemia and Burkitt’s lymphoma. It is, however, quite rare for TLS to occur secondary to a solid malignancy4. …

A Case Report Of Methemoglobinemia And Hemolytic Anemia In The Setting Of Covid-19 Pneumonia And G6pd Deficiency, Grant W. Jirka, Md, Travis Hunt, Md, Sushil Ghimire, Md, Rakhshanda Akram, Md, Urvashi Vaid, Md, Ms

The Medicine Forum

It is well known that hereditary or acquired methemoglobinemia can cause hypoxia due to the oxidation of heme, which impairs its ability to offload oxygen (Figures 1 & 2), and that acquired methemoglobinemia is most often caused by exposure to drugs and toxins that oxidize hemoglobin to methemoglobin, directly or indirectly1. Recently, a few case reports have highlighted methemoglobinemia in patients with COVID-19 pneumonia. Some of these reports were due to treatment with hydroxychloroquine and others from unidentifiable causes2-4. We present a case in which a patient with COVID-19 pneumonia was diagnosed with methemoglobinemia and acute hemolysis from G6PD deficiency …

A Case Of Acute Pancreatitis Associated With Empagliflozin, Tudor Sturzoiu, Md, Sameep Thapa, Md, Ellen Solomon, Suchit Bhutani, Md

The Medicine Forum

Sodium-glucose cotransporter 2 (SGLT2) inhibitors are being prescribed increasingly more often for type 2 diabetes mellitus as well as heart failure. They have not typically been associated with acute pancreatitis, but there has been a steady flow of case reports implicating them in acute pancreatitis over the years since they were initially approved. Here, we present the case of an 82-year-old woman with a past medical history of T2DM, COPD, hyperlipidemia, a remote stroke, peripheral arterial disease, and remote breast cancer now with recurrent localized breast cancer on treatment with ademaciclib and letrozole who presented to the emergency department with …

A Confounding Case Of Acute Hepatitis A, Andrea Molin, Md, Michael Cheung, Md, Timothy Kuchera, Md

The Medicine Forum

Hepatitis A (HAV) is a picornavirus transmitted via fecal-oral route that disproportionately affects homeless persons, men who have sex with men, and individuals who use intravenous drugs. Acute HAV typically presents with nausea, vomiting, abdominal pain, and fever. It is most commonly self-limited but can progress to fulminant hepatic failure in less than 1% of cases. The following case is a unique presentation of acute HAV infection requiring diagnostic dexterity and critical thinking.

Shocked But Not Surprised: The Philly Cardioversion, Gillian Naro, Md, Med, Naman Upadhyay, Md, Emilie Thompson, Md, Tudor Sturzoiu, Md

The Medicine Forum

Neuromuscular incapacitating devices, colloquially known as ‘tasers’, are typically used by police and security personnel as a non-lethal way to subdue combative assailants. Unfortunately, there are times in the hospital when patients can become assailants, thus potentially necessitating the use of tasers to ensure the safety of staff and other patients. Tasers come in several varieties. However, those typically used by law enforcement have a 50,000-V capacity and deliver 0.36 - 1.76 Joules of energy per pulse, at a rate of ~20 pulses per second, via two barbed projections. This leads to incapacitation of the assailant via the induction of …

A Case Of Patent Foramen Ovale As A Cause Of Persistent Hypoxia, Jaya Janadhyala, Md, Jonathan Foster, Md

The Medicine Forum

Patent foramen ovale (PFO) is a congenital cardiac variant caused by failure of the closure of a passage in the atrial septum. It is quite common, occurring in as much as 27% of the population based on autopsy studies. Most cases of PFOs are incidentally discovered or found during work-up of cryptogenic strokes as a potential cause of the stroke.1 New research is being conducted on the role PFOs play in hypoxia from intracardiac right-to-left shunting, including in patients with co-existent cardiovascular and pulmonary disease

Cardiac Amyloidosis: A Known Disease With An Unknown Presentation, Svenja Schneider, Md, Tudor Sturzoiu, Md, Tanuka Datta, Md, Yevgeniy Brailovsky, Do, Facc, Sung-Hae Cho, Md, Facc, Paulina Gorodin-Kiliddar, Md

The Medicine Forum

Cardiac amyloidosis is an increasingly recognized entity that causes significant morbidity and mortality. Transthyretin amyloidosis (ATTR) is present in about 16% of patients with severe aortic stenosis and up to 17% of patients with heart failure with preserved ejection fraction9,10. Though the screening test of choice, echocardiography is not highly sensitive or specific, and it should not be relied upon to rule out cardiac amyloidosis, especially if clinical suspicion is high.

We present a case of a 58-year-old woman with a history of bilateral carpal tunnel syndrome who presented with paresthesia and syncope. Extensive workup for neurologic, infectious, and malignant …

Another Case Of Takotsubo Syndrome: Excluded By The Presence Of Significant Coronary Artery Disease, Or Caused By Significant Coronary Artery Disease?, Bharaniabirami Rajaram, Md, Neveda Murugesan, Md, Gregary D. Marhefka, Md

The Medicine Forum

Takotsubo syndrome (TTS) is a reversible condition of abnormal myocardial contraction that was first given this name in Japan by Dr. Sato in 1991. The name comes from the Japanese word for “octopus trap,” which has a similar shape to that of the left ventricle on ventriculography during Takotsubo syndrome. It is also known as broken heart syndrome, stress-induced cardiomyopathy, or apical ballooning syndrome. The first descriptions of this phenomenon date as far back as the 1960s.

TTS typically presents with symptoms and clinical signs suggestive of acute coronary syndrome (ACS). It may include ST segment elevations on electrocardiogram (ECG) …

Challenges Of Managing Giant Cell Myocarditis: A Case Report On The Mechanical Support Perspective, Abdul W. Kazi, Md, Mba, Harsh Doshi, Md

The Medicine Forum

Giant cell myocarditis is a rare and fatal disease which may result in heart failure, complete heart block, or ventricular arrhythmias. We describe a patient who previously had been discharged from our institution with a left ventricular assist device and immunosuppressive therapy for management of his giant cell myocarditis. His subsequent course was complicated by further deterioration of heart function which required multiple mechanical circulatory support devices. He successfully received a heart transplant which later had recurrence of giant cell myocarditis. This case highlights the challenges of left and right sided mechanical assist devices in managing giant cell myocarditis.

AG …

From The Chief Residents, Cristina Angelo, Md, Katherine Duffey, Md, Evan Nardone, Md, Michelle Perkons, Md

The Medicine Forum

The four of us have had the unique opportunity to work alongside you and watch you grow throughout the last three years. During an extremely turbulent time at Jefferson, in the city of Philadelphia, and the larger healthcare landscape you all have been the constant presence that has kept the Jefferson IM residency culture alive. Jefferson residents are: Compassionate, intelligent, dedicated, fun, and resilient. But most of all, Jefferson residents look out for each other and have each other’s backs. This is the culture that brings people to our program and the culture that makes residency training which would otherwise …

From The Editors, Shuji Mitsuhashi, Md, Abdul W. Kazi, Md, Matthew Dimeglio, Do, Mba

The Medicine Forum

It is our honor to present the 23rd Annual edition of The Medicine Forum to the Jefferson community. With all the uncertainties and stressors that exist both inside and outside of the hospital walls, it is truly remarkable to see the quality of contributions by our authors. From the multitude of case reports to the collection of artworks, our residents have generated an array of unique and interesting work. We hope that this edition will continue to honor the tradition of The Medicine Forum, which is the celebration of scholarly activity among physicians in training at our institution.

Editorial …

From The Desk Of The Residency Program Director, Emily Stewart, Md, Facp

The Medicine Forum

Our program continues to train the best and brightest residents in the country. As we complete another challenging academic year marred by the ongoing fight against gun violence in Philadelphia and across the United States, the opioid pandemic and the ever present threat of another COVID-19 surge our residents have continued to rise to every challenge and thrive as physicians. During the three years we are fortunate to have them at our program, it is my distinct pleasure to watch them grow into confident, dedicated, compassionate clinicians. The residents are not just outstanding clinicians but excel in all aspects of …

Table Of Contents: The Medicine Forum Volume 23, 2021-2022

The Medicine Forum

Table of Contents: The Medicine Forum Volume 23, 2021-2022

Development And Validation Of A Simple Model To Predict The Risk Of Nonmelanoma Skin Cancer On Screening Total Body Skin Examination, Rebecca Hartman, Yun Xue, Ryan Karmouta, Elizabeth Tkachenko, Sara J. Li, David G. Li, Cara Joyce, Arash Mostaghimi

Biostatistics Collaborative Core: Faculty Publications and Other Works

Objective. There is insufficient evidence to generate skin cancer screening guidelines at the population level, resulting in arbitrary variation in patient selection for screening skin examinations. This study was aimed at developing an easy-to-use predictive model of nonmelanoma skin cancer (NMSC) risk on screening total body skin examination (TBSE).

Methods. This epidemiologic assessment utilized data from a prospective, multicenter international study from primarily academic outpatient dermatology clinics. Potential predictors of NMSC on screening TBSE were identified and used to generate a multivariable model that was converted into a point-based scoring system. The performance characteristics of the model were validated in …

Covid-19 Newsletter (Vol. 132), Center For Disaster Medicine, New York Medical College

COVID-19 Newsletter

No abstract provided.

Cyclase-Associated Protein 1 (Cap1) In Cyclic Adenosine Monophosphate (Camp) And Protein Kinase C (Pkc) Signals To Regulate Cancer Cell Functions, Lokesh Kalki Mani Sai Akana

Student Theses and Dissertations

Cyclase-Associated Protein 1 (CAP1) is an actin-regulating protein that promotes actin dynamics and is also involved in cell adhesion and proliferation as well as implicated in human cancers. We previously found that phosphorylation at the Ser307/Ser309 tandem regulatory site on CAP1 is critical for CAP1 functions in breast and pancreatic cancer cells. We silenced CAP1 through RNAi in HCT116 and SW480 colon cancer cells as confirmed in Western blotting. We have found that depletion of CAP1 led to reduced FAK (Focal Adhesion Kinase) activity and matrix adhesion in SW480 cells, while it stimulated FAK activity and cell adhesion in HCT116 …

The Global Network Socioeconomic Status Index As A Predictor Of Stillbirths, Perinatal Mortality, And Neonatal Mortality In Rural Communities In Low And Lower Middle Income Country Sites Of The Global Network For Women's And Children's Health Research, Archana B Patel, Carla M Bann, Cherryl S Kolhe, Adrien Lokangaka, Antoinette Tshefu, Melissa Bauserman, Lester Figueroa, Nancy F Krebs, Fabian Esamai, Sherri Bucher, Sarah Saleem, Robert L Goldenberg, Elwyn Chomba, Waldemar A Carlo, Shivaprasad Goudar, Richard J Derman, Marion Koso-Thomas, Elizabeth M Mcclure, Patricia L Hibberd

Global Health Articles

BACKGROUND: Globally, socioeconomic status (SES) is an important health determinant across a range of health conditions and diseases. However, measuring SES within low- and middle-income countries (LMICs) can be particularly challenging given the variation and diversity of LMIC populations.

OBJECTIVE: The current study investigates whether maternal SES as assessed by the newly developed Global Network-SES Index is associated with pregnancy outcomes (stillbirths, perinatal mortality, and neonatal mortality) in six LMICs: Democratic Republic of the Congo, Guatemala, India, Kenya, Pakistan, and Zambia.

METHODS: The analysis included data from 87,923 women enrolled in the Maternal and Newborn Health Registry of the NICHD-funded …

The Global Network Socioeconomic Status Index As A Predictor Of Stillbirths, Perinatal Mortality, And Neonatal Mortality In Rural Communities In Low And Lower Middle Income Country Sites Of The Global Network For Women's And Children's Health Research, Archana B. Patel, Carla M. Bann, Cherryl S. Kolhe, Adrien Lokangaka, Antoinette Tshefu, Melissa Bauserman, Lester Figueroa, Nancy F. Krebs, Fabian Esamai, Sarah Saleem

Community Health Sciences

Background: Globally, socioeconomic status (SES) is an important health determinant across a range of health conditions and diseases. However, measuring SES within low- and middle-income countries (LMICs) can be particularly challenging given the variation and diversity of LMIC populations.
Objective: The current study investigates whether maternal SES as assessed by the newly developed Global Network-SES Index is associated with pregnancy outcomes (stillbirths, perinatal mortality, and neonatal mortality) in six LMICs: Democratic Republic of the Congo, Guatemala, India, Kenya, Pakistan, and Zambia.
Methods: The analysis included data from 87,923 women enrolled in the Maternal and Newborn Health Registry of the NICHD-funded …

Evaluating The Impact Of Modic Changes On Operative Treatment In The Cervical And Lumbar Spine: A Systematic Review And Meta-Analysis, Mark J Lambrechts, Parker Brush, Tariq Z Issa, Gregory R Toci, Jeremy C Heard, Amit Syal, Meghan M Schilken, Jose A Canseco, Christopher K Kepler, Alexander R Vaccaro

Rothman Institute Papers

Modic changes (MCs) are believed to be potential pain generators in the lumbar and cervical spine, but it is currently unclear if their presence affects postsurgical outcomes. We performed a systematic review in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. All studies evaluating cervical or lumbar spine postsurgical outcomes in patients with documented preoperative MCs were included. A total of 29 studies and 6013 patients with 2688 of those patients having preoperative MCs were included. Eight included studies evaluated cervical spine surgery, eleven evaluated lumbar discectomies, nine studied lumbar fusion surgery, and three assessed …

Immuno-Genomic Profiling Of Biopsy Specimens Predicts Neoadjuvant Chemotherapy Response In Esophageal Squamous Cell Carcinoma, Shota Sasagawa, Hiroaki Kato, Koji Nagaoka, Changbo Sun, Motohiro Imano, Takao Sato, Todd A Johnson, Masashi Fujita, Kazuhiro Maejima, Yuki Okawa, Kazuhiro Kakimi, Takushi Yasuda, Hidewaki Nakagawa

Faculty, Staff and Student Publications

Esophageal squamous cell carcinoma (ESCC) is one of the most aggressive cancers and is primarily treated with platinum-based neoadjuvant chemotherapy (NAC). Some ESCCs respond well to NAC. However, biomarkers to predict NAC sensitivity and their response mechanism in ESCC remain unclear. We perform whole-genome sequencing and RNA sequencing analysis of 141 ESCC biopsy specimens before NAC treatment to generate a machine-learning-based diagnostic model to predict NAC reactivity in ESCC and analyzed the association between immunogenomic features and NAC response. Neutrophil infiltration may play an important role in ESCC response to NAC. We also demonstrate that specific copy-number alterations and copy-number …

Genetic Impairment Of Succinate Metabolism Disrupts Bioenergetic Sensing In Adrenal Neuroendocrine Cancer, Priyanka Gupta, Keehn Strange, Rahul Telange, Ailan Guo, Heather Hatch, Amin Sobh, Jonathan Elie, Angela M Carter, John Totenhagen, Chunfeng Tan, Yogesh A Sonawane, Jiri Neuzil, Amarnath Natarajan, Ashley J Ovens, Jonathan S Oakhill, Thorsten Wiederhold, Karel Pacak, Hans K Ghayee, Laurent Meijer, Sushanth Reddy, James A Bibb

Faculty, Staff and Student Publications

Metabolic dysfunction mutations can impair energy sensing and cause cancer. Loss of function of the mitochondrial tricarboxylic acid (TCA) cycle enzyme subunit succinate dehydrogenase B (SDHB) results in various forms of cancer typified by pheochromocytoma (PC). Here we delineate a signaling cascade where the loss of SDHB induces the Warburg effect, triggers dysregulation of [Ca

The Prostate Cancer Androgen Receptor Cistrome In African American Men Associates With Upregulation Of Lipid Metabolism And Immune Response, Jacob E Berchuck, Elio Adib, Sarah Abou Alaiwi, Amit K Dash, Jin Na Shin, Dallin Lowder, Collin Mccoll, Patricia Castro, Ryan Carelli, Elisa Benedetti, Jenny Deng, Matthew Robertson, Sylvan C Baca, Connor Bell, Heather M Mcclure, Talal El Zarif, Matthew P Davidsohn, Gitanjali Lakshminarayanan, Kinza Rizwan, Darlene G Skapura, Sandra L Grimm, Christel M Davis, Erik A Ehli, Kaitlin M Kelleher, Ji-Heui Seo, Nicholas Mitsiades, Cristian Coarfa, Mark M Pomerantz, Massimo Loda, Michael Ittmann, Matthew L Freedman, Salma Kaochar

Faculty, Staff and Students Publications

African-American (AA) men are more likely to be diagnosed with and die from prostate cancer than European American (EA) men. Despite the central role of the androgen receptor (AR) transcription factor in prostate cancer, little is known about the contribution of epigenetics to observed racial disparities. We performed AR chromatin immunoprecipitation sequencing on primary prostate tumors from AA and EA men, finding that sites with greater AR binding intensity in AA relative to EA prostate cancer are enriched for lipid metabolism and immune response genes. Integration with transcriptomic and metabolomic data demonstrated coinciding upregulation of lipid metabolism gene expression and …

Cross-Sector Decision Landscape In Response To Covid-19: A Qualitative Network Mapping Analysis Of North Carolina Decision-Makers, Caitlin B Biddell, Karl T Johnson, Mehul D Patel, Raymond L Smith, Hillary K Hecht, Julie L Swann, Maria E Mayorga, Kristen Hassmiller Lich

Faculty, Staff and Student Publications

INTRODUCTION: The COVID-19 pandemic response has demonstrated the interconnectedness of individuals, organizations, and other entities jointly contributing to the production of community health. This response has involved stakeholders from numerous sectors who have been faced with new decisions, objectives, and constraints. We examined the cross-sector organizational decision landscape that formed in response to the COVID-19 pandemic in North Carolina.

METHODS: We conducted virtual semi-structured interviews with 44 organizational decision-makers representing nine sectors in North Carolina between October 2020 and January 2021 to understand the decision-making landscape within the first year of the COVID-19 pandemic. In line with a complexity/systems thinking …

Genetic Impairment Of Succinate Metabolism Disrupts Bioenergetic Sensing In Adrenal Neuroendocrine Cancer, Priyanka Gupta, Keehn Strange, Rahul Telange, Ailan Guo, Heather Hatch, Amin Sobh, Jonathan Elie, Angela M Carter, John Totenhagen, Chunfeng Tan, Yogesh A Sonawane, Jiri Neuzil, Amarnath Natarajan, Ashley J Ovens, Jonathan S Oakhill, Thorsten Wiederhold, Karel Pacak, Hans K Ghayee, Laurent Meijer, Sushanth Reddy, James A Bibb

Faculty, Staff and Student Publications

Metabolic dysfunction mutations can impair energy sensing and cause cancer. Loss of function of the mitochondrial tricarboxylic acid (TCA) cycle enzyme subunit succinate dehydrogenase B (SDHB) results in various forms of cancer typified by pheochromocytoma (PC). Here we delineate a signaling cascade where the loss of SDHB induces the Warburg effect, triggers dysregulation of [Ca2+]i, and aberrantly activates calpain and protein kinase Cdk5, through conversion of its cofactor from p35 to p25. Consequently, aberrant Cdk5 initiates a phospho-signaling cascade where GSK3 inhibition inactivates energy sensing by AMP kinase through dephosphorylation of the AMP kinase γ subunit, PRKAG2. Overexpression of p25-GFP …

Poziotinib Inhibits Her2-Mutant-Driven Therapeutic Resistance And Multiorgan Metastasis In Breast Cancer, Rashi Kalra, Ching Hui Chen, Junkai Wang, Ahmad Bin Salam, Lacey E Dobrolecki, Alaina Lewis, Christina Sallas, Clayton C Yates, Carolina Gutierrez, Balasubramanyam Karanam, Meenakshi Anurag, Bora Lim, Matthew J Ellis, Shyam M Kavuri

Faculty, Staff and Student Publications

The pan-HER tyrosine kinase inhibitor (TKI) neratinib is therapeutically active against metastatic breast cancers harboring activating HER2 mutations, but responses are variable and often not durable. Here we demonstrate that recurrent HER2 mutations have differential effects on endocrine therapy responsiveness, metastasis, and pan-HER TKI therapeutic sensitivity. The prevalence and prognostic significance may also depend on whether the HER2 mutant has arisen in the context of lobular versus ductal histology. The most highly recurrent HER2 mutant, L755S, was particularly resistant to neratinib but sensitive to the pan-HER TKI poziotinib, alone or in combination with fulvestrant. Poziotinib reduced tumor growth, diminished multiorgan …

Interobserver Variability Among Expert Readers Quantifying Plaque Volume And Plaque Characteristics On Coronary Ct Angiography: A Clarify Trial Sub-Study, Rebecca Jonas, Shaneke Weerakoon, Rebecca Fisher, William F Griffin, Vishak Kumar, Habib Rahban, Hugo Marques, Ronald P Karlsberg, Robert S Jennings, Tami R Crabtree, Andrew D Choi, James P Earls

Division of Internal Medicine Faculty Papers & Presentations

Background: The difference between expert level (L3) reader and artificial intelligence (AI) performance for quantifying coronary plaque and plaque components is unknown.

Objective: This study evaluates the interobserver variability among expert readers for quantifying the volume of coronary plaque and plaque components on coronary computed tomographic angiography (CCTA) using an artificial intelligence enabled quantitative CCTA analysis software as a reference (AI-QCT).

Methods: This study uses CCTA imaging obtained from 232 patients enrolled in the CLARIFY (CT EvaLuation by ARtificial Intelligence For Atherosclerosis, Stenosis and Vascular MorphologY) study. Readers quantified overall plaque volume and the % breakdown of noncalcified plaque (NCP) …