Direct-Acting Antiviral Treatment for Hepatitis C Genotypes Uncommon in High-Income Countries:: A Dutch Nationwide Cohort Study

Background. The majority of hepatitis C virus (HCV) infections are found in low- and middle-income countries, which harbor many region-specific HCV subtypes. Nevertheless, direct-acting antiviral (DAA) trials have almost exclusively been conducted in high-income countries, where mainly epidemically spread HCV subtypes are present. Recently, several studies have demonstrated suboptimal DAA efficacy for certain nonepidemic subtypes, which could hamper global HCV elimination. Therefore, we aimed to evaluate DAA efficacy in patients treated for a nonepidemic HCV genotype infection in the Netherlan... Mehr ...

Verfasser: Isfordink, Cas J.
van de Laar, Thijs J.W.
Rebers, Sjoerd P.H.
Wessels, Els
Molenkamp, Richard
Knoester, Marjolein
Baak, Bert C.
Van Nieuwkoop, Cees
van Hoek, Bart
Brakenhoff, Sylvia
Blokzijl, Hans
Arends, Joop E.
van der Valk, Marc
Schinkel, Janke
Dokumenttyp: Artikel
Erscheinungsdatum: 2021
Reihe/Periodikum: Isfordink , C J , van de Laar , T J W , Rebers , S P H , Wessels , E , Molenkamp , R , Knoester , M , Baak , B C , Van Nieuwkoop , C , van Hoek , B , Brakenhoff , S , Blokzijl , H , Arends , J E , van der Valk , M , Schinkel , J & HepNed Study Group 2021 , ' Direct-Acting Antiviral Treatment for Hepatitis C Genotypes Uncommon in High-Income Countries: A Dutch Nationwide Cohort Study ' , Open Forum Infectious Diseases , vol. 8 , no. 2 , ofab006 . https://doi.org/10.1093/ofid/ofab006
Schlagwörter: /dk/atira/pure/sustainabledevelopmentgoals/good_health_and_well_being / SDG 3 - Good Health and Well-being
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-26685072
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://pure.eur.nl/en/publications/2be2e94e-2e9d-411d-9732-658f69e34b8a

Background. The majority of hepatitis C virus (HCV) infections are found in low- and middle-income countries, which harbor many region-specific HCV subtypes. Nevertheless, direct-acting antiviral (DAA) trials have almost exclusively been conducted in high-income countries, where mainly epidemically spread HCV subtypes are present. Recently, several studies have demonstrated suboptimal DAA efficacy for certain nonepidemic subtypes, which could hamper global HCV elimination. Therefore, we aimed to evaluate DAA efficacy in patients treated for a nonepidemic HCV genotype infection in the Netherlands. Methods. We performed a nationwide retrospective study including patients treated with interferon-free DAAs for an HCV genotype other than 1a/1b/2a/2b/3a/4a/4d. The genotype was determined by NS5B region phylogenetic analysis. The primary end point was SVR-12. If stored samples were available, NS5A and NS5B sequences were obtained for resistance-associated substitutions (RAS) evaluation. Results. We included 160 patients, mainly infected with nonepidemic genotype 2 (41%) and 4 (31%) subtypes. Most patients were from Africa (45%) or South America (24%); 51 (32%) were cirrhotic. SVR-12 was achieved in 92% (140/152) of patients with available SVR-12 data. Only 73% (8/11) genotype 3–infected patients achieved SVR-12, the majority being genotype 3b patients with 63% (5/8) SVR. Regardless of SVR, all genotype 3b patients had 30K and 31M RAS. Conclusions. The DAA efficacy we observed in most nonepidemic genotypes in the Netherlands seems reassuring. However, the low SVR-12 rate in subtype 3b infections is alarming, especially as it is common in several HCV-endemic countries. Alongside earlier results, our results indicate that a remaining challenge for global HCV elimination is confirming and monitoring DAA efficacy in nonepidemic genotypes.