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Summary: Background: The effect of direct‐acting anti‐virals (DAAs) in children and adolescents with chronic hepatitis C virus (HCV) infection is difficult to determine, since few, aged between 3 and 18 years, have been enrolled in clinical trials, and some data come from observational studies. Aim: To summarise the evidence on efficacy and safety of DAAs in children and adolescents with chronic HCV infection. Methods: We performed a systematic review and meta‐analysis of prospective studies on the efficacy and safety of DAAs in subjects <18 years of age. We considered the sustained virological response at post‐treatment week 12 as efficacy outcome and adverse events as safety outcome. We considered intervention effect for each study arm by calculating the proportion of sustained virologic response at post‐treatment week 12 in subjects receiving all doses of treatment and proportion of adverse events in subjects receiving at least one dose of treatment. Pooled proportions were calculated using the Freeman‐Tukey double arcsine transformation. Random effects model was used for all analyses. Results: Among 39 included studies (1796 subjects), the pooled proportion among those receiving all doses of treatment and reaching sustained virologic response at post‐treatment week 12 was 100% (95% confidence interval: 100‐100). Considering subjects receiving at least one dose of treatment, lowest estimates were reported among children with cirrhosis (83%). Headache and fatigue were the most common adverse events. Serious adverse events were uncommon. Conclusions: Children and adolescents with chronic HCV infection can be safely treated with DAAs with similar efficacy as reported in adults. [ABSTRACT FROM AUTHOR]

Hepatitis C is a global public health threat. The introduction of direct-acting antivirals (DAAs) brings the prospect of curing the 71 million people living with the disease, dramatically changing the landscape of hepatitis C. The World Health Organization developed a roadmap for the elimination and cure of hepatitis C by 2030 with a clear goal with measurable targets. However, there is a lack of a well-defined strategy to tackle the hepatitis C virus (HCV) problem in children and adolescents vis-à-vis the adult population. Hepatitis C in children and adolescents can be addressed as part of a national policy for elimination in the whole population, namely macroelimination, or could be fragmented into a microelimination approach targeting the high-risk population groups. Children born to HCV-infected mothers, adolescents who are injecting drugs, migrants, and those suffering from inherited blood diseases are important target populations. After the U.S. Food and Drug Administration approval for the use of DAAs in children aged 3 years and above, evidence from clinical trials and real-world experience was accumulated using brand and generic medicines, with sustained virological response rates exceeding 95%. The evidence created should guide policies on the management of hepatitis C in children and adolescents. There are many challenges in managing HCV in this left-behind marginalized population. The lack of awareness and epidemiological data, consent age, prohibitive prices of medicines, and absence of policies on access to diagnostics, treatment, and linkage to care are among the many barriers to service delivery that should be addressed to achieve the elimination goal by 2030. [ABSTRACT FROM AUTHOR]

The burden of paediatric Hepatitis C virus (HCV) infection across Europe is unknown, as are current policies regarding monitoring and treatment. This collaborative study aimed to collect aggregate data to characterise the population of ≤18‐year‐olds with HCV infection in specialist follow up in a 12‐month period (2016) across the PENTAHep European consortium, and investigate current policies around monitoring and treatment. A cross‐sectional, web‐based survey was distributed in April 2017 to 50 paediatricians in 19 European countries, covering patients' profile, and monitoring and treatment practices. Responses were received from 38/50 clinicians collectively caring for 663 children with chronic HCV infection of whom three‐quarters were aged ≥6 years and 90% vertically infected. HCV genotype 1 was the most common (n 380; 57.3%), followed by genotype 3, 4 and 2. Seventeen children (3%) with chronic HCV infection were diagnosed with cirrhosis, and six were reported to have received liver transplantation for HCV‐related liver disease. The majority (n 425; 64.1%) of the European children with HCV infection remained treatment‐naive in 2016. Age affected clinicians' attitudes towards treatment; 94% reported being willing to use direct‐acting antivirals, if available, in adolescents (aged ≥11 years), 78% in children aged 6‐10 and 42% in those 3‐5 years of age (Pearson correlation coefficient −0.98; P 0.0001). This survey provides the largest characterisation of the population of children in clinical follow‐up for chronic HCV infection in Europe, alongside important contextual information on their management and treatment. Discussion is needed around strategies and criteria for use of direct‐acting antivirals in these children. [ABSTRACT FROM AUTHOR]

Background & Aims: The aim of this study was to assess the effect of treatment with sofosbuvir/velpatasvir (SOF/VEL) on the health‐related quality of life (HRQL) of children with chronic hepatitis C. Methods: In the non‐commercial, non‐randomized, open‐label PANDAA‐PED study, 50 children aged 6–18 years with chronic hepatitis C were treated with a fixed dose of SOF/VEL. All patients achieved sustained virologic response 12 weeks after the end of treatment (SVR12). Evaluation of HRQL was performed twice: at baseline (before the treatment) and during the SVR12 analysis using the KIDSCREEN‐27 questionnaires, which included 5 dimensions of HRQL, for child self‐reporting and parent proxy reporting. The normal range for the population was set to T values of 50 ± 10 points. Child–parent agreement was analysed using the intra‐class correlation coefficient (ICC) and Bland–Altman test. Results: Mean T values were within the normal range for all dimensions, both before and after treatment. There was a significant improvement in physical well‐being based on the children's self‐assessment (from 48.53 to 51.21, p =.03). In addition, a trend towards better scores in the 'social support & peers' part of the parent proxy evaluation (from 45.98 to 48.66, p =.06) was noticed. After the treatment, the proportion of children self‐assessing their physical well‐being as below normal significantly decreased from 17% to 5% (p =.007). HRQL scores were not associated with patients' sex, but in most cases, younger age correlated with better HRQL. Evaluation of the ICC for child self‐reports versus parent proxy reports revealed poor to moderate agreement for most single measures. Bland–Altman analysis showed that in all dimensions, both before and after treatment, the limits of agreement (LoAs) exceeded ±5 points (half of the SD and considered a maximum allowed difference). Conclusions: A significant proportion of children with chronic hepatitis C have decreased HRQL in all dimensions, but effective treatment with SOF/VEL leads to an improvement in some areas of well‐being. As the effect of HCV on HRQL is more pronounced in older patients, treatment of younger children should be indicated to prevent them from experiencing decreased HRQL due to ongoing HCV infection in the future. [ABSTRACT FROM AUTHOR]

A case study of a eight years month-old boy is presented with a history of chronic hepatitis C, and whose aminotransferases increased and plasma viral load rebounded. Topics discussed include presence of anti- hepatitis C virus (HCV), HCV latency in the liver, and plan of treating pegylated interferon and ribavirin.

Background and Aims: The aim of this non‐commercial, open‐label, real‐life, non‐randomized clinical trial was to analyse the efficacy and safety of a pangenotypic regimen sofosbuvir/velpatasvir (SOF/VEL) in patients aged 6–18 years with chronic hepatitis C virus (HCV) infection. Methods: Fifty patients qualified for the 12‐week treatment were divided into two weight groups: 15 children weighting between 17 and <30 kg received a fixed dose of 200/50 mg of SOF/VEL (tablet) once daily, and 35 patients weighting ≥30 kg were treated with 400/100 mg SOF/VEL. The primary endpoint of the study was efficacy defined as sustained viral response (undetectable HCV RNA using an real‐time polymerase chain reaction method) at 12 weeks posttreatment (SVR12). Results: Median age of the participants was 10 (IQR 8–12) years, 47 were infected vertically, and 3 patients were previously ineffectively treated with pegylated interferon and ribavirin. Thirty‐seven participants were infected with HCV genotype 1, 10 with HCV genotype 3 and the remaining 3 with genotype 4. There was no case of cirrhosis. SVR12 was 100%. Thirty‐three reported adverse events (AEs) were considered related to the administration of SOF/VEL, all of them were mild or moderate. Children presenting with AEs were older compared to these without AEs: 12 (9.5–13) versus 9 (IQR 8–11) years (p = 0.008). Conclusions: Results of the PANDAA‐PED study indicated a 100% effectiveness of a 12‐week therapy with SOF/VEL in children aged 6–18 years with chronic HCV infection and its good safety profile, in particular in younger patients. [ABSTRACT FROM AUTHOR]

Summary: Russia has one of the highest prevalences of paediatric chronic hepatitis C infection (CHC). Our aim was to provide a detailed characterization of children and adolescents with CHC including treatment outcomes. Thus, an observational study of children with CHC aged <18 years was conducted in three hepatology centres from November 2014 to May 2017. Of 301 children (52% male), 196 (65%) acquired HCV vertically, 70 (23%) had a history of blood transfusion or invasive procedures, 1 injecting drug use and 34 (11%) had no known risk factors. Median age at HCV diagnosis was 3.1 [interquartile range, IQR 1.1, 8.2] and 10.8 [7.4, 14.7] at last follow‐up. The most common genotype was 1b (51%), followed by 3 (37%). Over a quarter of patients (84, 28%) had raised liver transaminases. Of 92 with liver biopsy, 38 (41%) had bridging fibrosis (median age 10.4 [7.1, 14.1]). Of 223 evaluated by transient elastography, 67 (30%) had liver stiffness ≥5.0 kPa. For each year, increase in age mean stiffness increased by 0.09 kPa (95% CI 0.05, 0.13, P < 0.001). There was significant correlation between liver stiffness and biopsy results (Tau‐b = 0.29, P = 0.042). Of 205 treated with IFN‐based regimens, 100 (49%) had SVR24. Most children (191, 93%) experienced adverse reactions, leading to treatment discontinuation in 6 (3%). In conclusion, a third of children acquired HCV via nonvertical routes and a substantial proportion of those with liver biopsy had advanced liver disease. Only half of children achieved SVR24 with IFN‐based regimens highlighting the need for more effective and better‐tolerated treatments with direct‐acting antivirals. Further studies are warranted in Russia on causes and prevention of nonvertical transmission of HCV in children. [ABSTRACT FROM AUTHOR]