Ethan Shamsian

Dr. Ethan Shamsian


Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 October 2025 in Livers
Verified
Journal Article
Open access
PDF file
ESEthan Shamsian
Ethan Shamsian
MBMichael Bebawy
Michael Bebawy
ZIZachary Israeli
Zachary Israeli
MMMahinaz Mohsen
Mahinaz Mohsen
RKRohan Karkra
Rohan Karkra
Paul J. GaglioPaul J. Gaglio
Paul J. Gaglio
Metabolic-associated steatotic liver disease is currently one of the most common causes of liver disease in the world, affecting a large portion of the global population; these patients are at risk of developing advanced liver fibrosis and cirrhosis. Noninvasive tests (NITs), including lab tests such as FIB-4, NAFLD Fibrosis Score and the Aspartate Aminotransferase-to-Platelet Ratio Index, are widely used for fibrosis risk stratification, but their accuracy across various racial, ethnic, and age groups remains poorly characterized. This review examines disparities in NIT performance across these populations and the need for tailored screening strategies. A comprehensive, narrative literature review highlighted significant variability in NIT performance, with studies in African American, Hispanic and Asian patients all revealing mixed results when the performance of NITs was used to assess fibrosis levels. Additionally, the age of patients may influence fibrosis testing, as older adults tend to have higher false-positive rates due to age-based biases. Although imaging modalities like VCTE and MRE may offer superior accuracy in the noninvasive assessment of hepatic fibrosis, they face accessibility limitations and have rarely been validated in specific racial groups. This review concludes that current NITs for MASLD risk stratification needs to be recalibrated with population-specific and age-adjusted thresholds, and future research should focus on inclusive validation studies and integrating clinical judgment to improve screening accuracy.

11 March 2026 in Livers
Verified
Journal Article
Open access
PDF file
MMMahinaz Mohsen
Mahinaz Mohsen
RKRohan Karkra
Rohan Karkra
EMEsli Medina-Morales
Esli Medina-Morales
JBJoshua Pagan Busigo
Joshua Pagan Busigo
ESEthan Shamsian
Ethan Shamsian
Paul J. GaglioPaul J. Gaglio
Paul J. Gaglio
Primary Biliary Cholangitis (PBC) is a chronic, immune-mediated cholestatic liver disease characterized by progressive intrahepatic bile duct destruction, leading to pruritus, fatigue, cirrhosis, and eventually hepatocellular carcinoma. Early diagnosis has improved with the development of sensitive serologic assays (e.g., antimitochondrial antibodies, antinuclear antibodies) and the introduction of newer biomarkers. Risk stratification has become standardized with the help of GLOBE and UK-PBC scores, alongside non-invasive tools such as vibration-controlled transient elastography, enabling earlier intervention. Ursodeoxycholic acid (UDCA) is the first-line therapy; however, 30–40% of patients show an incomplete response, increasing their risk of liver failure and mortality. Second-line therapies have emerged which provide viable treatment avenues for those who do not respond to UDCA or are unable to tolerate it. However, in certain situations, such as decompensated cirrhosis, carcinoma, or refractory pruritus, liver transplantation constitutes the only curative therapy. While PBC has excellent post-liver transplant (post-LT) outcomes, patients with PBC face higher waitlist mortality as they tend to have lower MELD scores. Management post-LT includes the use of UDCA, immunosuppressants, and surveillance for recurrent PBC. Our review highlights the recent advances in medical management and transplant risk stratification of patients at risk of decompensation, as well as the perioperative transplant period outcomes and long-term post-transplant management strategies in patients with PBC.

1 August 2026 in Medicina
Verified
Journal Article
Open access
PDF file
ESEthan Shamsian
Ethan Shamsian
JMJohn Ralph Mark
John Ralph Mark
MMMahinaz Mohsen
Mahinaz Mohsen
AMAnika Makol
Anika Makol
SRSameer Rao
Sameer Rao
Paul J. GaglioPaul J. Gaglio
Paul J. Gaglio
Background and Objectives: Metabolic dysfunction-associated steatotic liver disease (MASLD) is closely linked to systemic cardiometabolic dysfunction. Resting heart rate (RHR), a marker of autonomic and metabolic stress, has been associated with metabolic syndrome and cardiovascular disease, though its relationship with MASLD remains incompletely characterized. We evaluated the association between RHR and liver-related outcomes in a nationally representative U.S. cohort. Materials and Methods: We analyzed adults aged 20–79 years from NHANES 2017–2020 with valid vibration-controlled transient elastography (VCTE) measurements. Participants with significant alcohol use, viral hepatitis, pregnancy, use of heart rate-modifying medications, or missing key data were excluded. Liver outcomes included elevated alanine aminotransferase (ALT), advanced steatosis (CAP ≥ 290 dB/m), FIB-4 fibrosis category, and VCTE-defined fibrosis. Multivariable regression models adjusted for demographic and metabolic covariates were used to evaluate associations between RHR and liver-related outcomes. Results: A total of 3532 adults were included. Each 1 beat-per-minute increase in RHR was independently associated with elevated ALT (OR 1.025, 95% CI 1.002–1.050, p = 0.043) and advanced steatosis (OR 1.036, 95% CI 1.001–1.073, p = 0.048). No significant association was observed between RHR and higher FIB-4 category (OR 1.025, 95% CI 0.992–1.060, p = 0.169) or VCTE-defined fibrosis (OR 0.990, 95% CI 0.961–1.021, p = 0.481). Associations with ALT and steatosis were attenuated after adjustment for glycemic and lipid parameters. Conclusions: Higher RHR was associated with steatosis-related and metabolic liver outcomes, but not fibrosis, in a nationally representative cohort. These findings suggest that RHR may reflect underlying autonomic and metabolic dysfunction relevant to early MASLD pathogenesis rather than advanced fibrotic disease.

30 June 2026 in ACG Case Reports Journal
Verified
Journal Article
Open access
JBJoshua Pagan Busigo
Joshua Pagan Busigo
ESEthan Shamsian
Ethan Shamsian
RKRohan Karkra
Rohan Karkra
MAMohammed Ayyad
Mohammed Ayyad
KMKranthi Mandava
Kranthi Mandava
GSGokturk Suut
Gokturk Suut
Percutaneous endoscopic gastrostomy (PEG) is commonly used for long-term enteral access in patients with dysphagia. We report a 67-year-old man with laryngeal carcinoma, prior stroke, and severe dysphagia who developed delayed hemorrhage from a branch of the splenic artery 7 days after PEG placement. He presented with abdominal pain, bleeding through the PEG tube, profound anemia, and hemodynamic instability. Imaging showed hemorrhage in the lesser sac, and angiography confirmed active splenic artery branch bleeding. Endovascular embolization achieved hemostasis. This rare complication is notable for its delayed presentation and favorable outcome after prompt intervention.

22 May 2026 in Preprints.org
Verified
Preprint
Open access
PDF file
ESEthan Shamsian
Ethan Shamsian
JMJohn Ralph Mark
John Ralph Mark
MMMahinaz Mohsen
Mahinaz Mohsen
AMAnika Makol
Anika Makol
SRSameer Rao
Sameer Rao
Paul J. GaglioPaul J. Gaglio
Paul J. Gaglio
Background and Aims; Metabolic dysfunction–associated steatotic liver disease (MASLD) is closely linked to systemic cardiometabolic dysfunction. Resting heart rate (RHR), a marker of autonomic and metabolic stress, has been associated with metabolic syndrome and cardiovascular disease, though its relationship with MASLD remains incompletely characterized. We evaluated the association between RHR and liver-related outcomes in a nationally representative U.S. cohort. Materials and Methods; We analyzed adults aged 20–79 years from NHANES 2017–2020 with valid vibration-controlled transient elastography (VCTE) measurements. Participants with significant alcohol use, viral hepatitis, pregnancy, beta-blocker use, or missing key data were excluded. Liver outcomes included elevated alanine aminotransferase (ALT), advanced steatosis (CAP ≥290 dB/m), FIB-4 fibrosis category, and VCTE-defined fibrosis. Multivariable regression models adjusted for demographic and metabolic covariates were used to evaluate associations between RHR and liver-related outcomes. Results; A total of 3,567 adults were included. Each 1 beat-per-minute increase in RHR was independently associated with elevated ALT (OR 1.025, 95% CI 1.002–1.050, p=0.026) and advanced steatosis (OR 1.036, 95% CI 1.001–1.073, p=0.033). No significant association was observed between RHR and higher FIB-4 category (OR 1.025, 95% CI 0.992–1.060, p=0.150) or VCTE-defined fibrosis (OR 0.990, 95% CI 0.961–1.021, p=0.511). Associations with ALT and steatosis were attenuated after adjustment for glycemic and lipid parameters. Conclusions; Higher RHR was associated with steatosis-related and metabolic liver outcomes, but not fibrosis, in a nationally representative cohort. These findings suggest that RHR may reflect underlying autonomic and metabolic dysfunction relevant to early MASLD pathogenesis rather than advanced fibrotic disease.