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    The COVID-19 pandemic: Clinical practice advice for gastroenterologists, hepatologists, and liver transplant specialists
    (Aves, 2020) Kabacam, Gokhan; Dayangac, Murat; Ucbilek, Enver; Ercin, Cemal Nuri; Gunsar, Fuiya; Akyilchz, Murat; Akarsu, Mesut
    Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is a novel acute infectious disease that has rapidly reached staggering pandemic proportions. This review addresses gastroenterologists, hepatologists, liver transplant (LT) specialists, and health-care professionals working in the field of liver diseases and liver transplantation. It has been written based on a limited number of publications, recommendations of national and international liver and organ transplantation societies, and experiences of patients with COVID-19 around the world. The purpose of this review is to provide information addressing questions and concerns about COVID-19, to reveal the effects of the novel disease on patients with chronic liver disease and LT recipients, and to share information about ways in which this pandemic will affect clinical practices. We, the Turkish Association for the Study of the Liver (TASL), would like to remind you that this text is actually not a practical guide. It is imperative to act according to the standards set by health-care institutions and the Ministry of Health, Republic of Turkey.
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    The efficacy and tolerability of glecaprevir/pibrentasvir treatment in a real-world chronic hepatitis C patients cohort
    (Kare Publ, 2023) Yaras, Serkan; Demir, Mehmet; Barutcu, Sezgin; Yildirim, Abdullah Emre; Gurel, Selim; Ucbilek, Enver; Kurtulmus, Ilkce Akgun
    Background and Aim: The aims of the present study were to evaluate the real-life efficacy and tolerability of glecaprevir (GLE)/pibrentasvir (PIB) in the treatment of patients with chronic hepatitis C (CHC).Materials and Methods: Between May 2019 and May 2022, 686 patients with CHC, treated with GLE/PIB combination from 21 participating centers in Turkiye, were enrolled in the study.Results: All patients were Caucasian, and their median age was 56 years. At the start of GLE/PIB treatment, the median serum Hepatitis C virus RNA and serum alanine amino transaminase (ALT) levels were 6.74 log10 IU/mL and 47 U/L, respectively. Fifty-three percent of the patients were infected with genotype 1b, followed by genotype 3 (17%). Diabetes was the more common concomitant disease. The sustained virological response (SVR12) was 91.4% with intent-to-treat analysis and 98.5% with per protocol analysis. The SVR12 rates were statistically significant differences between the patients who were i.v. drug users and non-user (88.0% vs. 98.8%, p=0.025). From the baseline to SVR12, the serum ALT levels and Model for End-Stage Liver Disease score were significantly improved (p<0.001 and p=0.014, respectively). No severe adverse effect was observed.Conclusion: GLE/PIB is an effective and tolerable treatment in patients with CHC.
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    Etiology of Cirrhosis in Turkey: A National Cohort Study
    (Elsevier, 2021) Yildirim, Abdullah Emre; Ucbilek, Enver; Oruncu, M. Berk; Turan, Ilker; Demir, Mehmet; Koksal, Aydin; Uyanikoglu, Ahmet
    [Abstract Not Available]
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    Real-world efficacy and safety of Ledipasvir plus Sofosbuvir and Ombitasvir/Paritaprevir/Ritonavir ± Dasabuvir combination therapies for chronic hepatitis C: A Turkish experience
    (Aves, 2020) Degertekin, Bulent; Demir, Mehmet; Akarca, Ulus S.; Kani, Haluk Tarik; Ucbilek, Enver; Yildirim, Emre; Guzelbulut, Fatih
    Background/Aims: This study aimed to evaluate the real-life efficacy and tolerability of direct-acting antiviral treatments for patients with chronic hepatitis C (CHC) with/without cirrhosis in the Turkish population. Material and Methods: A total of 4,352 patients with CHC from 36 different institutions in Turkey were enrolled. They received ledipasvir (LDV) and sofosbuvir (SOF)+/- ribavirin (RBV) ombitasvir/paritaprevir/ritonavir +/- dasabuvir (PrOD)+/- RBV for 12 or 24 weeks. Sustained virologic response (SVR) rates, factors affecting SVR, safety profile, and hepatocellular cancer (HCC) occurrence were analyzed. Results: SVR12 was achieved in 92.8% of the patients (4,040/4,352) according to intention-to-treat and in 98.3% of the patients (4,040/4,108) according to per-protocol analysis. The SVR12 rates were similar between the treatment regimens (97.2%-100%) and genotypes (95.6%-100%). Patients achieving SVR showed a significant decrease in the mean serum alanine transaminase (ALT) levels (50.90 +/- 54.60 U/L to 17.00 +/- 14.50 U/L) and model for end-stage liver disease (MELD) scores (7.51 +/- 4.54 to 7.32 +/- 3.40) (p<0.05). Of the patients, 2 were diagnosed with HCC during the treatment and 14 were diagnosed with HCC 37.0 +/- 16.0 weeks post-treatment. Higher initial MELD score (odds ratio [OR]: 1.92, 95% confidence interval [CI]: 1.22-2.38; p=0.023]), higher hepatitis C virus (HCV) RNA levels (OR: 1.44, 95% CI: 1.31-2.28; p=0.038), and higher serum ALT levels (OR: 1.38, 95% CI: 1.21-1.83; p=0.042) were associated with poor SVR12. The most common adverse events were fatigue (12.6%), pruritis (7.3%), increased serum ALT (4.7%) and bilirubin (3.8%) levels, and anemia (3.1%). Conclusion: LDV/SOF or PrOD +/- RBV were effective and tolerable treatments for patients with CHC and with or without advanced liver disease before and after liver transplantation. Although HCV eradication improves the liver function, there is a risk of developing HCC.