The aim of this study was to obtain real-world, US, observational data on the effect of baseline resistance-associated substitutions (RASs) on achieving sustained virologic response (SVR) in hepatitis C (HCV) patients treated with direct-acting antiviral (DAA) regimens; the need for long-term follow-up in post-SVR patients. It is uncertain if the presence of RASs limits efficacy to DAAs. Once SVR is achieved, society guidelines recommend long-term surveillance for hepatocellular carcinoma in certain patients. Real-world data are limited on these topics. Adult patients treated with DAAs at community hepatitis clinics between January 2015 and April 2017 were included in this study. Baseline resistance testing was performed before treatment. Per guidelines, post-SVR long-term monitoring was required in patients with F3 to F4 fibrosis before treatment or with elevated ALT levels (>19 U/L females; >30 U/L males). A total of 875 chronic, mostly GT1a (60%) HCV patients were treated with an approved DAA regimen. Average baseline AST and ALT were 75 and 67 U/L, respectively, and 47% had F3 to F4 fibrosis at baseline. SVR was achieved in 863 (98.6%) patients despite a high presence of baseline RASs (61%). Long-term monitoring was required post-SVR in 539 patients (62%). In a real-life, US cohort of HCV-infected patients, nearly all patients achieved SVR with available DAA regimens regardless of baseline RASs. Approximately two-thirds of these patients required long-term follow-up, despite viral eradication.

Background. Direct-acting antivirals (DAAs) are highly effective treatments against hepatitis C virus (HCV), with sustained virologic response (SVR) rates of 93–100% against all genotypes. In most patients, viral load (VL) becomes undetectable four weeks into treatment, but rarely a low positive VL may be observed at the end of treatment (EOT). This study was conducted to determine the effect of low positive EOT VLs with DAA therapies on SVR at 12 and 24 weeks. Methods. A retrospective chart review was conducted from January 2014 to December 2018 on 1256 HCV patients of all genotypes (1–6) who had received DAA therapy at two large hepatology referral centers. Baseline demographic data, along with VL at week four, EOT, and SVR12/24 time points were collected for patients that had positive EOT VL. Treatment outcome for any patient with positive EOT VL was noted. Results. Eight out of 1256 patients treated with varying DAA therapies were observed to have low positive EOT VLs ranging from <15 to 235 IU/mL. One patient had a negative EOT VL, but 23 IU/mL at week four after EOT. All eight patients who had low positive EOT VLs and one patient who had a low positive VL at four weeks after EOT achieved SVR at weeks 12 and 24. One of the eight patients had cirrhosis. The majority of patients were genotype 1a. Conclusion. In the DAA treatment era, low levels of detectable HCV RNA at EOT does not predict treatment failure.

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effective, but not all families are willing to tolerate the consequent nocturnal disruption. I disagree that children under 7 or 8 are indifferent to their wet beds; facts elicited by a more than superficial inquiry suggest otherwise.To claim, as the authors do, that the use of these "dangerous drugs" for children under 8 "cannot be justified" is not correct. There is practically no danger with proper dosage, and proper dosage can easily be ensured if we prescribe unattractive tablets rather than tasty syrup.

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