Objective: There are clinical and laboratory associations between thyroid and liver diseases. Hepatitis C virus (HCV) is known to be responsible for both hepatic and extrahepatic diseases. The most frequent and clinically important endocrine extrahepatic diseases are thyroid disorders and type 2 diabetes mellitus. We aim to study the relationship between the serum level of thyroid hormones (THs) and the severity of liver disease in patients with chronic hepatitis C virus (CHC) infection. Methods: 60 patients with CHC infection were selected for the study. They were divided into two groups: with or without liver cirrhosis. Those with liver cirrhosis were further subdivided according to the Child-Turcotte-Pugh scoring system. Serum levels of free T3 (FT3), free T4 (FT4) and TSH were measured to all patients. Results: There was decrease in the FT3 and FT4 levels and increase in the TSH levels in patients with CHC with cirrhosis when compared to patients with CHC without cirrhosis. Conclusion: Thyroid profile abnormalities were seen in cirrhotic HCV patients when compared to non-cirrhotic patients. The abnormalities in the serum level of THs (decreased FT3, FT4, and increased TSH) are strongly associated with the severity of liver damage and advancing of the child score.

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OBI is likely among hemodialysis patients even without HCV coinfection (24%). Genotype D cannot be the only genotype distributed in Upper Egypt, as the current study reported relatively new results that 50% of the patients with occult B carry genotype B, 33.3% carry genotype C and only 16.6% carry genotype D.

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Sofosbuvir (SOF) and daclatasvir combination with or without ribavirin proved to be effective and safe in the treatment of hepatitis C virus infection. The study aimed to assess the efficacy of (SOF plus daclatasvir) combination + ribavirin in the treatment of treatment-experienced HCV genotype 4 Egyptian patients and to investigate the impact of IL-1β _31, IL-1β _511, and IL-1RN and T29C of ESR1 genes polymorphisms on treatment outcome. The study also aimed to assess the effect of the treatment on liver fibrosis. The sustained virologic response was assessed at 0, 4, 12, and 24 weeks from the beginning of treatment by RT-PCR. IL-1β _31, IL-1β _511, IL-1RN, and T29C genes polymorphisms were examined by PCR-based techniques in two groups of patients (responders and non-responders) and a control group of healthy subjects. A significant association between IL-1β_511 gene polymorphism and SOF/DAV-induced response was observed, where the "CC" genotype was the most frequent in responders while the "CT" genotype was the most frequent among non-responders (P = 0.0001, OR = 39; 95% CI = 4.7-316). IL-1RN gene polymorphism also showed significant associations with response to treatment, genotypes that include allele "1" were the most frequent in responders, particularly the homozygous genotype "1/1" (P = 0.0001, OR = 2.3; 95% CI = 1.57-3.2). However, the genotypes "4/4" and "2/4" were the most frequent in nonresponders; (P = 0.0001). At least 71% of the responders carry allele "1" while 54% of non-responders were allele "4" carriers (P value = 0.0001. OR = 2.8; 95% CI = 6.4-134.2). Liver fibrosis is significantly improved regardless of the response.