scholarly journals Effect of Low Positive End of Treatment Viral Load with Direct-Acting Antiviral Therapy on Sustained Virologic Response

2020 ◽  
Vol 2020 ◽  
pp. 1-4
Author(s):  
Vabhave Pal ◽  
Nirupama Ancha ◽  
Jena Mann ◽  
Apurva A. Modi
Keyword(s):  
Viral Load ◽  
Sustained Virologic Response ◽  
Demographic Data ◽  
Retrospective Chart Review ◽  
Virologic Response ◽  
Hcv Rna ◽  
Direct Acting Antiviral ◽  
Genotype 1A ◽  
End Of Treatment ◽  
Direct Acting

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.

scholarly journals HCV Core Antigen as an alternative test to Quantitative HCV RNA for assessment of SVR in Chronic HCV infected patients treated with Direct Acting Antiviral agents

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
S M Mohamed ◽  
N I Musa ◽  
R S Ghait ◽  
B M Abdelrhiem
Keyword(s):  
Antiviral Agents ◽  
Virologic Response ◽  
Hcv Infection ◽  
Core Antigen ◽  
Hcv Rna ◽  
Viral Kinetics ◽  
Direct Acting Antiviral ◽  
Hcv Core Antigen ◽  
End Of Treatment ◽  
Direct Acting

Abstract Background and aims Widespread use of direct-acting antiviral (DAA) agents to treat patients with hepatitis C virus (HCV) infection has reduced the need for monitoring of HCV-RNA levels, because viral kinetics do not predict sustained virologic response (SVR) to these drugs. However, the performance of cheaper tests, such as the assay to quantify HCV core antigen (HCV Ag), has not been determined. This study was aimed at investigating the accuracy of the HCV Ag test in predicting which patients receiving DAAs will achieve SVR at week 12 (SVR12). Methods We performed a prospective study on 90 patients, chronically infected with HCV, receiving DAAs therapy from different NCCVH centers in Cairo during the period from August 2017 to June 2018. We collected blood samples and measured the levels of HCV core Ag and HCV-RNA at baseline and 12 weeks after end of treatment. We compared the ability of these assays to predict which patients would have SVR12. Results The median baseline level of HCV-RNA was 1688529.6 ± 994697.3 IU/ml (range, 312700 IU/ml to 3491100 IU/ml) and HCV Ag was 179.2 ± 83.5 pg/ml (range, 33.5 pg/ml to 315.6 pg/ml). HCV Ag became undetectable in 92.2% 12 weeks after the end of treatment. HCV-RNA became undetectable in 87.8% at the end of treatment (P&lt;.0001). 79 out of 90 patients (87.8%) achieved an SVR12; the test for HCV Ag identified 63.6% of these patients. Conclusions Tests that measure HCV Ag monitor efficacy of DAA therapy for HCV infection as well as assays that measure HCV-RNA, and hence could be recommended for clinical practice.

scholarly journals Clinical Relevance of Torque Teno Virus (TTV) in HIV/HCV Coinfected and HCV Monoinfected Patients Treated with Direct-Acting Antiviral Therapy

2021 ◽  
Vol 10 (10) ◽  
pp. 2092
Author(s):  
Daniele Lapa ◽  
Paola Del Porto ◽  
Claudia Minosse ◽  
Gianpiero D’Offizi ◽  
Andrea Antinori ◽  
...  
Keyword(s):  
Viral Load ◽  
Torque Teno Virus ◽  
Hcv Rna ◽  
Direct Acting Antiviral ◽  
End Of Treatment ◽  
Specific Strain ◽  
Treatment Responder ◽  
Clinical Consequences ◽  
Hcv Coinfection ◽  
Direct Acting

Torque Teno virus (TTV) is a ubiquitous virus that causes chronic infection in humans with unknown clinical consequences. Here, we investigated the influence of TTV infection on HCV direct-acting antiviral (DAA) efficacy in HIV/HCV coinfected and HCV monoinfected patients as controls. Of 92 study patients, 79.3% were TTV DNA positive; untreated patients exhibited a significantly higher proportion of TTV DNA-positivity vs. sustained virological response (SVR) patients (100.0% vs. 65.2%, p < 0.001), while TTV positivity was not significant in DAA failure patients vs. SVR patients despite HIV/HCV coinfection. TTV DNA viral load was higher among HCV monoinfected patients vs. HIV/HCV coinfected, although marginally significant (p = 0.074) and no significant viral load difference was detected between DAA failures and SVR patients, while untreated vs. SVR patients had a significantly higher viral load (19,884, IQR 5977–333,534, vs. 469, IQR 10–4124, p = 0.004). Alpha-genogroup 3 TTV was the most prevalent genetic group, and no specific strain or genogroup was observed in relapser patients. Among HIV/HCV patients with HCV RNA detectable at end of treatment (EOT), TTV DNA was detected in 9/17 treatment responder patients and 3/5 relapser patients, thus, TTV infection does not appear to influence the control HCV viremia after EOT. Levels of IL-6 IL-4, and CD14 were not significantly different between TTV PCR-positive and -negative patients. These results suggest no association between TTV DNA positivity or viral load and HCV DAA failure whether patients were HIV/HCV coinfected or HCV monoinfected.

scholarly journals Incidence and Impact of Persistent Viremia on SVR Rates in Patients Receiving Direct-Acting Antiviral Therapy

2020 ◽  
Vol 7 (12) ◽  
Author(s):  
Alicia B Carver ◽  
Autumn D Zuckerman ◽  
Joshua DeClercq ◽  
Leena Choi ◽  
Cody A Chastain
Keyword(s):  
Antiviral Therapy ◽  
Real World ◽  
Sustained Virologic Response ◽  
Response Rates ◽  
Virologic Response ◽  
Direct Acting Antiviral ◽  
Rapid Virologic Response ◽  
Persistent Viremia ◽  
Direct Acting ◽  
High Sustained Virologic Response

Abstract Rates of persistent viremia (PV) while on direct-acting antiviral therapy were low (5.7%) in a real-world cohort of 983 patients. High sustained virologic response rates were achieved both in patients with PV (92.9%) and those with rapid virologic response (96.5%), without significant differences.

DI-062 Sustained virologic response rates of new direct acting antiviral agents for HCV

2016 ◽  
Vol 23 (Suppl 1) ◽  
pp. A145.2-A146
Author(s):  
C Caballero Requejo ◽  
M Onteniente Candela ◽  
JJ Franco Miguel ◽  
M Garcia Coronel ◽  
A Trujillano Ruiz ◽  
...  
Keyword(s):  
Sustained Virologic Response ◽  
Antiviral Agents ◽  
Response Rates ◽  
Virologic Response ◽  
Direct Acting Antiviral ◽  
Direct Acting ◽  
Direct Acting Antiviral Agents

Hepatitis C “true” late relapse beyond 48 weeks of sustained virologic response after direct acting antiviral therapy

2017 ◽  
Vol 66 (4) ◽  
pp. 862-863 ◽  
Author(s):  
Thomas Klag ◽  
Julia Dietz ◽  
Christoph R. Werner ◽  
Julia M. Schwarz ◽  
Ulrich M. Lauer ◽  
...  
Keyword(s):  
Hepatitis C ◽  
Antiviral Therapy ◽  
Sustained Virologic Response ◽  
Virologic Response ◽  
Late Relapse ◽  
Direct Acting Antiviral ◽  
Direct Acting
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