Welcome, Guest
Username: Password: Remember me

TOPIC: Ribavirin Resistance

Ribavirin Resistance 2 years 10 months ago #1271

  • dointime
  • dointime's Avatar
  • Offline
  • Platinum Member
  • Posts: 348
  • Thank you received: 452
  • Karma: 7
Hi All,

I notice that ribavirin resistance seems to have crept into the narrative here. I am not sure if there is such a thing. I have seen one study in vitro where I believe they produced variants resistant to ribavirin. I have seen nothing which shows that you can get in vivo resistance to ribavirin. I would like to see the evidence if anybody has any?

For years people treated repeatedly with ifn and riba and it was widely believed that resistance to either of those drugs did not develop. In current times, the AASLD guidelines still recommend retreatment with ribavirin for some people who have treated with it before. Evidence from the Harvoni trials confirms that retreatment with ribavirin in some cases does make a difference. So I have to ask myself what is going on here? Is the ribavirin making a difference but just not as big as it would make if it had never been used before? Or is ribavirin resistance in vivo a myth?

I saw my doc the other day and asked him this question. He is now a virology Prof. of standing, the real deal who came all the way through from the early days of the HIV epidemic. He says there is no such thng as ribavirin resistance. Now I am prepared to entertain the idea that he is wrong, but his opinion does carry weight.

On a personal note, I am trying to decide whether or not to add ribavirin to my own tx. From experience I think that it will give me a bad rash. If it is not going to be useful then I would happily forego that horrible experience. So, evidence please for ribavirin resistance in vivo?

dointime
The administrator has disabled public write access.

Ribavirin Resistance 2 years 10 months ago #1274

  • emilio
  • emilio's Avatar
  • Offline
  • Moderator
  • In the field of opportunity its ploughing time
  • Posts: 382
  • Thank you received: 476
  • Karma: 8
Hi DT

Here is a study which I found this evening from 2011 At the time I attached this I hadn't read the article but did have a quick scan. Seems to be a bit of research available on the ribavirin resistant strains of HCV???

www.virologyj.com/content/8/1/402
Geno 1b F2/3 snce early 80s. Treated in 2008_9 for 63 weeks on INF/Riba. Commence Sof/Dac on 6 October 2015 and completed 18 weeks of tx. UND at 4-6 weeks, UND at EOT, SVR 2, SVR 6 and SVR 12 on 6 May 2016.
Last Edit: 2 years 10 months ago by DrJames.
The administrator has disabled public write access.

Ribavirin Resistance 2 years 10 months ago #1303

  • Nadia
  • Nadia's Avatar
  • Offline
  • Premium Member
  • 3a F0 Sof/Dac from 01.10.2015
  • Posts: 106
  • Thank you received: 86
  • Karma: 1
Hi Doingtime, have a look at this video from a Congress in Germany in September this year.

fixhepc.com/forum/drug-interactions/163-...clude-ribavirin.html

Virus not detected from 14.10.2015
Last Edit: 2 years 10 months ago by DrJames.
The administrator has disabled public write access.
The following user(s) said Thank You: dointime, Sir-Paul-Paul-MJ-twitter

Ribavirin Resistance 2 years 10 months ago #1308

  • dointime
  • dointime's Avatar
  • Offline
  • Platinum Member
  • Posts: 348
  • Thank you received: 452
  • Karma: 7
Nadia,
That is a very interesting video. Many thanks for posting.
The administrator has disabled public write access.

Ribavirin Resistance 2 years 10 months ago #1330

  • dointime
  • dointime's Avatar
  • Offline
  • Platinum Member
  • Posts: 348
  • Thank you received: 452
  • Karma: 7
Hey, thanks Em. Very good information.
And all the best with your tx :)
dt
The administrator has disabled public write access.

Ribavirin Resistance 2 years 10 months ago #1365

  • DrJames
  • DrJames's Avatar
  • Offline
  • Platinum Member
  • Posts: 1629
  • Thank you received: 6139
  • Karma: 95
Here's a video about it:

YMMV
The administrator has disabled public write access.
The following user(s) said Thank You: dointime
Time to create page: 0.111 seconds

Copyright © 2015-2017 FixHepC

Back to Top