ALAlisa Likhitsup

Alisa Likhitsup

*This is an algorithmically generated author record based on publicly available information.

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Previous Organizations / Institutes

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Alisa Likhitsup has a total of 10 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Indications and Outcomes with Liver Retransplantation in 2025

    by Alisa Likhitsup, Robert J. Fontana

    Five to 10% of the annual liver transplants in the United States are performed in prior liver recipients with 70% occurring within 1 year of transplantation. Fortunately, the incidence of primary non-function (PNF) has significantly decreased from 8% in the 1980’s to < 2%, but PNF and hepatic artery thromboses remain the leading reasons for early emergency retransplantation. Other indications for early retransplantation include severe biliary or vascular complications and refractory rejection. Fortunately, the need for late retransplantation (> 1 year) has also declined due to improved immunosuppression, earlier detection of recurrent disease, and use of oral antiviral agents for recurrent hepatitis C. Patient survival with retransplantation is consistently lower than with primary liver transplantation. Risk factors for poor outcomes with retransplantation include a higher MELD score, ICU status, renal failure, and use of marginal allografts. Therefore, most centers use younger, whole deceased brain-dead donor organs whenever possible. However, increased use of machine perfused livers has expanded the donor pool for these more complex and technically challenging cases. Retransplant recipients have a higher rate of early technical, infectious, and cardiovascular complications compared to primary LT recipients. Going forward, LT recipients with recurrent steatotic and alcoholic liver disease will likely pose ethical, medical, and surgical challenges to the transplant community.


  • Top Cited Papers
    Open Access

    Estimated Exposure to 6 Potentially Hepatotoxic Botanicals in US Adults

    by Alisa Likhitsup, Vincent L. Chen, Robert J. Fontana

    Importance: Use of herbal and dietary supplements (HDSs) accounts for an increasing proportion of drug hepatotoxicity cases. Turmeric or curcumin, green tea extract, Garcinia cambogia, black cohosh, red yeast rice, and ashwagandha are the most frequently reported hepatoxic botanicals, but their prevalence and reasons for use in the general population are unknown.Objective: To assess the prevalence and clinical characteristics of adult consumers of 6 potentially hepatoxic botanicals.Design, Setting, and Participants: This survey study analyzed nationally representative data from the National Health and Nutrition Examination Survey (NHANES), a nationally representative, cross-sectional survey of the general US population. Prescription drug and HDS exposure data in the past 30 days were analyzed, and 2020 US Census data were used for population estimates. Data were analyzed July 1, 2023, to February 1, 2024.Exposures: Adult NHANES participants enrolled between January 2017 and March 2020.Main Outcomes and Measures: Baseline weighted characteristics of HDS users and users of 6 potentially hepatotoxic botanical products were compared with non–HDS users. Multivariable analysis was undertaken to identify factors associated with HDS use or at-risk botanical use.Results: Among 9685 adults enrolled in this NHANES cohort, the mean (SE) age was 47.5 (0.5) years, and 51.8% (95% CI, 50.2%-53.4%) were female. The overall prevalence of HDS product use was 57.6% (95% CI, 55.9%-59.4%), while the prevalence of using the 6 botanicals of interest was 4.7% (95% CI, 3.9%-5.7%). Turmeric-containing botanicals were most commonly used (n = 236), followed by products containing green tea (n = 92), ashwagandha (n = 28), Garcinia cambogia (n = 20), red yeast rice (n = 20), and black cohosh (n = 19). Consumers of these 6 botanicals were significantly older (adjusted odds ratio [AOR], 2.36 [95% CI, 1.06-5.25]; P = .04 for 40-59 years of age and AOR, 3.96 [95% CI, 1.93-8.11]; P = .001 for ≥60 years of age), had a higher educational level (AOR, 4.78 [95% CI, 2.62-8.75]; P < .001), and were more likely to have arthritis (AOR, 2.27 [95% CI, 1.62-3.29]; P < .001) compared with non–HDS users. An estimated 15 584 599 (95% CI, 13 047 571-18 648 801) US adults used at least 1 of the 6 botanical products within the past 30 days, which was similar to the estimated number of patients prescribed potentially hepatotoxic drugs, including simvastatin (14 036 024 [95% CI, 11 202 460-17 594 452]) and nonsteroidal anti-inflammatory drugs (14 793 837 [95% CI, 13 014 623-16 671 897]). The most common reason for consuming turmeric and green tea was to improve or maintain health.Conclusions and Relevance: In this survey study, an estimated 15.6 million US adults consumed at least 1 botanical product with liver liability within the past 30 days, comparable with the number of people who consumed nonsteroidal anti-inflammatory drugs and a commonly prescribed hypolipidemic drug. Given a lack of regulatory oversight on the manufacturing and testing of botanical products, clinicians should be aware of possible adverse events from consumption of these largely unregulated products.


  • Open Access

    Outcomes and Predictors of 30-Day Readmission in Patients with Hepatocellular Carcinoma Undergoing Transarterial Chemoembolization between 2016 and 2018

    by Ifrah Fatima, Mohamed Ahmed, Wael T. Mohamed, Vinay Jahagirdar, Kevin F. Kennedy, Alisa Likhitsup

    Background: Hepatocellular carcinoma (HCC) is the third leading cause of cancer death worldwide. The 5-year survival rate for liver cancer in the US has improved from 3% four decades ago to 20% now. Transarterial chemoembolization (TACE) is the treatment of choice for stage B/intermediate-stage HCC. Complications of TACE include hepatic encephalopathy, liver failure, post-embolization syndrome, duodenal ulcers, liver abscesses, acute cholecystitis, and injury to the biliary tract. This study evaluates the 30-day readmission rate and predictors of readmission among patients with HCC undergoing TACE. Methods: The 2016–2018 Healthcare Cost and Utilization Project (HCUP) database, which includes the National Readmission Database (NRD), was used. All adult patients with HCC who underwent TACE were identified using the International Classification of Diseases (ICD-10). The rate of 30-day readmissions after TACE and the associated diagnoses were identified. Logistic regression was used to obtain adjusted odds ratios for variables associated with 30-day readmission. Results: A total of 566 patients underwent TACE between 2016–2018. Sixty-five patients were excluded due to death and unavailability of 30-day readmission data. The procedure was performed in large (80.4%), metro-teaching hospitals (94.5%). Mean patient age was 65.1 ± 9.9 years, and 74% of patients were male. Among the 501 patients, 81 (16.2%) were readmitted within 30 days. The mean age for readmitted patients was 63.2 ± 11.0 and 69.1% were male. The mean length of stay at readmission was 5.5 ± 7.3 days. A total of 7.4% of patients had neurological disorders, 17.3% had weight loss, 30.9% had fluid and electrolyte imbalance, and 21.0% had hepatic encephalopathy. The most common primary diagnoses at 30-day readmission were liver cell carcinoma, sepsis, and liver failure. Univariate analysis for variables associated with 30-day readmission included hepatic encephalopathy (OR 3.45; 95% CI 1.8–6.62; p = 0.0002), underlying neurological disorders (OR 3.28; 95% CI 1.16–9.3; p = 0.03), weight loss (OR 2.82; 95% CI 1.42–5.61; p = 0.003), and Medicaid status (OR 1.74; 95% CI 1.05–2.88; p = 0.03). Multivariable analysis showed hepatic encephalopathy (OR 2.91; 95% CI 1.4, 6.04; p = 0.04) and weight loss (OR 2.37; 95% CI 1.13–4.96; p = 0.02) were associated with hospital readmission. Conclusions: Weight loss and hepatic encephalopathy were predictors for 30-day readmission after a TACE procedure for HCC.