Efficacy of Direct Acting Antiviral (DAA) Treatment Against HCV Among Different Population Groups in The Eastern Region of India

Author: Sagnik Bakshi Supradip Dutta Raina Das Priya Verma Upasana Baskey Shanta Dutta Provash Chandra Sadhukhan

Theme: Epidemiology & Public Health Research Year: 2022

HCV is a positive-sense RNA virus with 8 major genotypes and 86 subtypes. The genomic
hypervariability of HCV often helps this virus to bypass the host immune system. Currently, directacting antivirals (DAAs) are prescribed to prevent HCV infection. This study depicts the present
scenario on the efficacy of DAAs treatment in eastern India.
A total of 594 HCV sero-reactive patients were registered in this study. Viral RNA was extracted from
serum and partial amplification of the core region (405bp) was done by nested RT-PCR for the
detection of HCV RNA. The PCR amplified products were sequenced by Sanger sequencing and the
genotype was recognized by NCBI genotyping tool. HCV positive patients were advised for DAAs and
the viral RNA status was monitored by qRT-PCR during the course of treatment.
In our study population, 72.39% were HCV RNA positive, and all of them were advised for DAAs. Of
them, 92.56% of patients had completed DAAs treatment. 94.47% of patients had achieved
sustainable viral response (SVR) and 5.52% were non-responders to DAAs. The majority of the nonresponsive cases were found within patients with decompensated cirrhosis of liver (13.33%)
followed by chronic liver disease (5.43%), β-thalassemia (4.67%), and hemodialysis (4.41%)
patients. 6.34% GT 3 and 4.20% GT1 infected patients were failed to respond against the treatment.
Furthermore, all GT4 infected patients had achieved SVR. 72.72% non-responsive cases were
observed against the combination of sofosbuvir and daclatasvir ± ribavirin treatment Among the
drug non-responders subtype, 3b was the most prevalent (~46%).
In the era of DAAs for HCV treatment, it was thought that a new generation of NS5 inhibitors would
have very high efficacy, but this study shows high nonresponsive cases within HCV genotype 3 which
indicates a new combination of therapeutic intervention, especially for HCV GT3.
Disclosure of Interest Statement:
Nothing to disclose.

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