Publications by authors named "Mohammed Al-Quaiz"
Background And Aim: Management of genotype 4 hepatitis C virus (HCV) has shifted to interferon-free regimens with a high sustained virological response (SVR-12), especially with NS5B/NS5A inhibitor combinations such as sofosbuvir and ledipasvir (Sof-Led). The guidelines have recommended the combination of sofosbuvir and another NS5A inhibitor, daclatasvir, to manage HCV genotypes 1-3. However, its use was extended to genotype 4 HCV based on extrapolating evidence.
View Article and Find Full Text PDFBackground/aims: The ideal end point of treatment for chronic hepatitis B virus (HBV) infection is sustained off-therapy hepatitis B surface antigen (HBsAg) loss with or even without seroconversion to anti-HBs. We investigated the role of adding PEGylated interferon (PEG IFN) to ongoing tenofovir treatment in chronic HBV patients for achieving HBsAg clearance.
Patients And Methods: In this randomized controlled trial, chronic HBV patients who have been receiving tenofovir for >6 months with HBV viral load <2000 IU/ml were randomized into two groups.
In this study, we report the experience of the only reference clinical next-generation sequencing lab in Saudi Arabia with the first 1000 families who span a wide-range of suspected Mendelian phenotypes. A total of 1019 tests were performed in the period of March 2016-December 2016 comprising 972 solo (index only), 14 duo (parents or affected siblings only), and 33 trio (index and parents). Multigene panels accounted for 672 tests, while whole exome sequencing (WES) represented the remaining 347 tests.
View Article and Find Full Text PDFBackground And Objectives: Entecavir is a nucleoside analog used in the treatment of chronic hepatitis B. The efficacy of ETV has not been studied in the Saudi population. The objective of the study was to find undetectable HBV DNA after 48 weeks completion of ETV treatment in real-life versus clinical trial patients.
View Article and Find Full Text PDFBackground And Objectives: Hepatitis C virus (HCV) genotype (G) knowledge is essential for determining type, duration and rate of response to antiviral therapy, possible route of HCV transmission, and future vaccine development. Our aim was to study HCV genotypes and to provide precise data on genotype distribution in both genders and different age groups amongst Saudi patients.
Design And Setting: Genotype data from molecular laboratories at four different tertiary care hospitals in Riyadh from January 2006 until December 2010 were collected and analyzed.
Background And Objectives: Wilson disease (WD) is a rare autosomal recessive disease. Our objective was to describe the diverse patterns, therapies, and outcomes of this disease.
Design And Setting: A retrospective study over two decades on WD patients in a tertiary care center in Saudi Arabia.
Background And Objectives: The epidemiology, clinical characteristics, and natural course of inflammatory bowel disease (IBD) in Saudi Arabia are still largely unknown. Hence, we decided to conduct a large retrospective, cohort study to determine these features of the disease.
Design And Setting: Retrospective study conducted in a tertiary care hospital in Riyadh from January 1970 to December 2008.
Background And Aim: Histological changes in hepatitis C virus (HCV)-infected patients with persistently normal alanine aminotransferase (PNALT) have not been evaluated for updated upper limits of normal (ULN; ≤ 19/30 U/L for females/males). We assessed significant fibrosis (≥ F2, METAVIR) in patients with PNALT and persistently elevated alanine aminotransferase (PEALT).
Patients And Methods: Nine hundred and twenty consecutive, unselected HCV patients were stratified into four groups: Group I: (n = 124) PNALT within the updated ULN [0.
Background And Objectives: Knowledge of the predictors of sustained viral response (SVR) to pegylated interferon (PEG-INF) alfa-2a and ribavirin (RBV) therapy in patients with hepatitis C genotype-4 (HCV-4) is crucial for selecting patients who would benefit most from therapy. We assessed the predictors of SVR to this combination therapy in Saudi patients with chronic HCV-4 infection.
Patients And Methods: This retrospective study included 148 patients with HCV-4 infection who underwent clinical, biochemical and virological assessments before treatment and at 12, 24, 48 and 72 weeks post-treatment.
Background: Bio-enteric intragastric balloon (BIB) insertion is gaining popularity for weight reduction in obese patients. We evaluated the efficacy, tolerability, and safety of BIB in the treatment of obesity.
Methods: A total of 173 Saudi obese patients [mean+/-SD age 34.
Background/aim: This retrospective study assessed the efficacy, safety, and the predictors of sustained viral response (SVR) to a 48-week-course of peginterferon alpha-2a (Pegasys) and ribavirin combination therapy in 335 consecutive Saudi patients with chronic hepatitis C virus (HCV) infection.
Materials And Methods: Clinical, biochemical, and virological parameters were collected at time 0 (pretreatment) and at 12, 24, 48, and 72 weeks posttreatment. The mean +/- SD age was 49.
Chronic hepatitis C virus (HCV) infection is a major health problem worldwide. The natural history of HCV infection is not fully understood. For years, there has been an overestimation of the rate of chronicity in acute HCV.
View Article and Find Full Text PDF