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Lancet Gastroenterol Hepatol. 2018 Mar;3(3):153-161. doi: 10.1016/S2468-1253(17)30404-1. Epub 2018 Jan 6.

Sofosbuvir and velpatasvir for hepatitis C virus infection in people with recent injection drug use (SIMPLIFY): an open-label, single-arm, phase 4, multicentre trial.

Author information

1
The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia. Electronic address: jgrebely@kirby.unsw.edu.au.
2
Akershus University Hospital, Oslo, Norway.
3
Vancouver Infectious Diseases Center, Vancouver, BC, Canada.
4
The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia.
5
Arud Centres for Addiction Medicine, Zurich, Switzerland.
6
The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia; Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia.
7
Centre Hospitalier de l'Université de Montréal, QC, Canada.
8
The Burnet Institute, Melbourne, VIC, Australia; Department of Infectious Disease, The Alfred Hospital, Melbourne, VIC, Australia.
9
Montefiore Medical Center, United States and Albert Einstein College of Medicine, New York, NY, USA.
10
International Network on Hepatitis in Substance Users, New York, NY, USA.
11
Australian Injecting & Illicit Drug Users League, Canberra, NSW, Australia.
12
Department of Infectious Diseases, Bern University Hospital, Bern, Switzerland.
13
Newcastle Pharmacotherapy Service, Newcastle, NSW, Australia.
14
The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia; St Vincent's Hospital, Sydney, NSW, Australia.
15
South Riverdale Community Health Centre, Toronto, ON, Canada.
16
Royal Adelaide Hospital, Adelaide, SA, Australia.
17
Nepean Hospital, Penrith, NSW, Australia.
18
Footscray Hospital, Footscray, VIC, Australia.
19
Ottawa Hospital Research Institute, Ottawa, ON, Canada.
20
Toronto General Hospital, Toronto, ON, Canada.
21
Cool Aid Community Health Centre, Victoria, BC, Canada.
22
Ninewells Hospital and Medical School, University of Dundee, Dundee, UK.
23
The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia; Kirketon Road Centre, Sydney, NSW, Australia.
24
Auckland City Hospital, Auckland, New Zealand.

Abstract

BACKGROUND:

Despite revised guidelines that no longer exclude people who inject drugs (PWID) from treatment for hepatitis C virus (HCV) infection, many clinicians are reluctant to treat recent PWID. This study aimed to evaluate the efficacy of sofosbuvir and velpatasvir therapy in people with chronic HCV infection and recent injection drug use.

METHODS:

In this open-label, single-arm phase 4 trial (SIMPLIFY), we recruited participants with recent injection drug use (past 6 months) and chronic HCV genotype 1-6 infection from seven countries (19 sites). Participants received oral sofosbuvir (400 mg) and velpatasvir (100 mg) once daily for 12 weeks. Therapy was given in 1-week electronic blister packs to record the time and date of each dose. The primary endpoint was the proportion of patients with sustained virological response 12 weeks after completion of treatment (SVR12; defined as HCV RNA <12 IU/mL), analysed in all patients who received at least one dose. This study is registered with ClinicalTrials.gov, number NCT02336139, and follow-up is ongoing to evaluate the secondary endpoint of HCV reinfection.

FINDINGS:

Between March 29, and Oct 31, 2016, we enrolled 103 participants; 29 (28%) of whom were female, nine (9%) had cirrhosis, 36 (35%) had HCV genotype 1, five (5%) had genotype 2, 60 (58%) had genotype 3, and two (2%) had genotype 4. 61 (59%) participants were receiving opioid substitution therapy during the study, 76 (74%) injected in the past month, and 27 (26%) injected at least daily in the past month. 100 (97%) of 103 participants completed treatment; two people were lost to follow-up and one person died from an overdose. There were no virological failures. 97 (94%, 95% CI 88-98) of 103 people achieved SVR12. Three participants with an end-of-treatment response did not have a SVR; two were lost to follow-up and one had reinfection. Drug use before and during treatment did not affect SVR12. Treatment-related adverse events were seen in 48 (47%) patients (one grade 3, no grade 4). Seven (7%) patients had at least one serious adverse event; only one such event (rhabdomyolysis, resolved) was possibly related to the therapy. One case of HCV reinfection was observed.

INTERPRETATION:

HCV treatment should be offered to PWID, irrespective of ongoing drug use. Recent injection drug use should not be used as a reason to withhold reimbursement of HCV therapy.

FUNDING:

Gilead Sciences.

PMID:
29310928
DOI:
10.1016/S2468-1253(17)30404-1
[Indexed for MEDLINE]

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