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Chronic Hepatitis BPhase 2NCT03434353

Study to Evaluate the Safety and Antiviral Activity of Inarigivir Soproxil (Formerly: GS-9992) Plus Tenofovir Alafenamide (TAF) for 12 Weeks in Adults With Chronic Hepatitis B (CHB)

A Phase 2 study testing Inarigivir Soproxil and TAF in people with Chronic Hepatitis B, run by Gilead Sciences at 13 sites in 2 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The primary objectives of this study are to evaluate the safety and tolerability of the 12 week treatment regimens of inarigivir soproxil plus tenofovir alafenamide (TAF) or commercially available nucleoside/nucleotide (NUC) in adults with chronic hepatitis B (CHB), to evaluate the antiviral activity of 12 weeks of… Read more about this study

Who is it for?
Ages 18 to 70 years
Conditions the study is for
Chronic Hepatitis B
What is being tested?
Inarigivir Soproxil and TAF
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
123 participants
Where
13 sitesin 2 countries
Study dates
28 Feb 2018to 26 Jan 2021
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Groups 1-3 and 5:
  • Individuals not taking any prescribed hepatitis B virus (HBV) NUC treatment
  • Group 4:
  • HBV deoxyribonucleic acid (DNA) ≤ 20 IU/mL at Screening by Central Lab.
  • Have been on a commercially available HBV NUC treatment(s)

Who cannot join

  • Co-infection with hepatitis C virus (HCV), human immunodeficiency virus (HIV), or hepatitis D virus (HDV).
  • Extensive bridging fibrosis or cirrhosis
  • Evidence of hepatocellular carcinoma on imaging
  • Any history of, or current evidence of, clinical hepatic decompensation (e.g., ascites, encephalopathy or variceal hemorrhage).
  • Chronic liver disease of a non-HBV etiology
  • Current alcohol or substance abuse
  • Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Trial locations and contacts

13 sites in 2 countries.

13 sites in 2 countries

South Korea10 sites
  • Korea University Ansan Hospital

    Ansan, 425-707

  • Keimyung University Dongsan Medical Center

    Daegu, 41931

  • Kyungpook National University Hospital

    Daegu, 41944

  • Inje University Ilsan Paik Hospital

    Ilsan, 10380

  • Severance Hospital, Yonsei University Health System

    Seoul, 03722

  • Asan Medical Center

    Seoul, 05505

  • Gangnam Severance Hospital, Yonsei University Health System

    Seoul, 06273

  • Catholic University of Korea, Seoul Saint Mary's Hospital

    Seoul, 06591

  • SMG-SNU Boramae Medical Center

    Seoul, 07061

  • Korea University Guro Hospital

    Seoul, 08308

Other trials in South Korea

Hong Kong3 sites
  • Alice Ho Miu Ling Nethersole Hospital

    Hong Kong

  • Prince Margaret Hospital

    Hong Kong

  • Prince of Wales Hospital-HK

    Hong Kong

Other trials in Hong Kong

About this study

Official title: A Phase 2, Randomized, Open-Label, Active-Controlled Study to Evaluate the Safety and Antiviral Activity of GS-9992 Plus Tenofovir Alafenamide (TAF) for 12 Weeks in Chronic Hepatitis B (CHB) Subjects

The primary objectives of this study are to evaluate the safety and tolerability of the 12 week treatment regimens of inarigivir soproxil plus tenofovir alafenamide (TAF) or commercially available nucleoside/nucleotide (NUC) in adults with chronic hepatitis B (CHB), to evaluate the antiviral activity of 12 weeks of inarigivir soproxil plus TAF versus TAF alone in viremic CHB participants (Groups 1-3, 5), and to evaluate the antiviral activity of 12 weeks of inarigivir soproxil with commercially available NUC(s) in virally suppressed CHB participants (Group 4).

Being tested
Inarigivir Soproxil, TAF
Medical subject headings
Hepatitis B, Chronic

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Inarigivir SoproxilDrug

    Also called SB 9200, GS-9992

    Administered orally once daily one hour before or one hour after a meal

  • TAFDrug

    Also called GS-7340, Vemlidy®

    Administered orally once daily with food

Study groups in NCT03434353
Study groupRoleWhat they receive
Group 1: Inarigivir Soproxil 50 mg + TAFExperimentalViremic participants will be administered inarigivir soproxil 50 mg (2 x 25 mg capsules) once daily orally 1 hour before or 1 hour after a meal plus TAF 25 mg tablet once daily orally with food for 12 weeks followed by TAF 25 mg tablet once daily orally with food for 36 weeks.
Receives: Drug: Inarigivir Soproxil; Drug: TAF
Group 2: TAFExperimentalViremic participants will be administered TAF 25 mg tablet once daily orally with food for 48 weeks.
Receives: Drug: TAF
Group 3: Inarigivir Soproxil 200 mg + TAFExperimentalViremic participants will be administered inarigivir soproxil 200 mg (2 x 100 mg tablets) once daily orally 1 hour before or 1 hour after a meal plus TAF 25 mg tablet once daily orally with food for 12 weeks followed by TAF 25 mg tablet once daily orally with food for 36 weeks
Receives: Drug: Inarigivir Soproxil; Drug: TAF
Group 4: Inarigivir Soproxil 100 mg + commercially available NUCsExperimentalVirally suppressed participants receiving commercially available nucleoside/nucleotide (NUC) will be administered inarigivir soproxil 100 mg tablet once daily orally 1 hour before or 1 hour after a meal for 12 weeks. Participants will continue commercially available NUCs for 48 weeks.
Receives: Drug: Inarigivir Soproxil
Group 5: Inarigivir Soproxil 400 mg + TAFExperimentalViremic participants will be administered inarigivir soproxil 400 mg (2 x 200 mg tablets) once daily orally 1 hour before or 1 hour after a meal plus TAF 25 mg tablet once daily orally with food for 12 weeks followed TAF 25 mg tablet once daily orally with food for 36 weeks.
Receives: Drug: Inarigivir Soproxil; Drug: TAF

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Participants With ≥ 0.5 log10 IU/mL Decline in HBsAg From Baseline at Week 12 (Groups 1-3 and 5)

    Measured: Baseline, Week 12

  2. Percentage of Participants With ≥ 0.5 log10 IU/mL Decline in HBsAg From Baseline at Week 12 (Group 4)

    Measured: Baseline, Week 12

Secondary outcomes (11)
  1. Percentage of Participants With ≥ 1 log10 IU/mL Decline in HBsAg From Baseline at Week 12 (Groups 1 Through 3 and 5)

    Measured: Baseline, Week 12

  2. Percentage of Participants With ≥ 1 log10 IU/mL Decline in HBsAg From Baseline at Week 12 (Group 4)

    Measured: Baseline, Week 12

  3. Percentage of HBeAg-positive Participants Who Achieved HBeAg Loss and Seroconversion at Weeks 12, 24, 36, and 48 (Groups 1 Through 3 and 5)

    HBeAg loss was defined as qualitative HBeAg result changing from positive at baseline to negative at post-baseline visit. HBeAg seroconversion was defined as HBeAb changing from negative or missing at baseline to positive at any postbaseline visit. Participants who had missing information were assumed to have no HBeAg loss and no HBeAg seroconversion.

    Measured: Baseline, Weeks 12, 24, 36, and 48

  4. Percentage of HBeAg-positive Participants Who Achieved HBeAg Loss and Seroconversion at Weeks 12, 24, 36, and 48 (Group 4)

    HBeAg loss was defined as qualitative HBeAg result changing from positive at baseline to negative at post-baseline visit. HBeAg seroconversion was defined as HBeAb changing from negative or missing at baseline to positive at any postbaseline visit. Participants who had missing information were assumed to have no HBeAg loss and no HBeAg seroconversion.

    Measured: Baseline, Weeks 12, 24, 36, and 48

  5. Percentage of Participants Who Achieved HBsAg Loss at Weeks 12, 24, 36, and 48 (Groups 1 Through 3 and 5)

    HBeAg loss was defined as qualitative HBeAg result changing from positive at baseline to negative at post-baseline visit. Participants who had missing information were assumed to have no HBeAg loss.

    Measured: Baseline, Weeks 12, 24, 36, and 48

  6. Percentage of Participants Who Achieved HBsAg Loss at Weeks 12, 24, 36, and 48 (Group 4)

    HBeAg loss was defined as qualitative HBeAg result changing from positive at baseline to negative at post-baseline visit.

    Measured: Baseline, Weeks 12, 24, 36, and 48

  7. Number of Participants With Sequence Changes From Baseline Within the HBV Polymerase for Participants Who Had HBV DNA ≥ 69 IU/mL (Groups 1 Through 3 and 5)

    Measured: Baseline, Week 48

  8. Percentage of Participants Experiencing Hepatitis B Virus (HBV) Virologic Breakthrough During 12 Weeks of Inarigivir Soproxil Treatment (Group 4)

    Virologic breakthrough was defined as HBV deoxyribonucleic acid (DNA) ≥69 IU/mL for 2 consecutive visits

    Measured: Baseline up to Week 12

  9. Change From Baseline in HBV DNA at Weeks 12, 16, 24, 36, and 48 (Groups 1 Through 3 and 5)

    Measured: Baseline, Weeks 12, 16, 24, 36, and 48

  10. Change From Baseline in HBsAg at Weeks 12, 16, 24, 36, and 48 (Groups 1 Through 3 and 5)

    Measured: Baseline, Weeks 12, 16, 24, 36, and 48

  11. Change From Baseline in HBsAg at Weeks 12, 16, 24, 36, and 48 (Group 4)

    Measured: Baseline, Weeks 12, 16, 24, 36, and 48

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 Feb 2018
  2. Study start28 Feb 2018
  3. Primary completion20 Jan 2020
  4. Study completion26 Jan 2021

Why it stopped: Study was terminated due to sponsor's decision to not pursue further development of inarigivir soproxil in chronic hepatitis B.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
123 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03434353
Sponsor's protocol ID
GS-US-464-4437
Status last verified
Mar 2022
First submitted
9 Feb 2018
Last updated
4 Apr 2022
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Lim YS, Hui AJ, Jang JW, Tak WY, Ahn SH, Jang BK, et al. Safety, efficacy, & pharmacodynamic (PD) activity of 12 weeks treatment with oral RIG-I agonist, inarigivir (IRIG), plus 48 weeks of tenofovir alafenamide in adult patients with chronic hepatitis B: a phase 2 collaboration study [Abstract PO-2422]. The International Liver Congress: European Association for the Study of the Liver (EASL) Virtual; 2021 23-26 June.

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Inarigivir Soproxil and TAF in people with Chronic Hepatitis B, run by Gilead Sciences at 13 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 4 Apr 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 13 sites in South Korea, Hong Kong. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 4 Apr 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants With ≥ 0.5 log10 IU/mL Decline in HBsAg From Baseline at Week 12 (Groups 1-3 and 5) (time frame: Baseline, Week 12). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03434353, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Apr 2022.

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