Chronic Hepatitis CNCT02545335
Neutrophil Function During Therapy With Protease Inhibitors in Chronic Hepatitis C
An observational study of Chronic Hepatitis C, run by Medical University of Graz at 1 site in Austria.
Trial summary
The aim of this study is to characterize neutrophil function in patients undergoing chronic hepatitis C triple therapy with protease inhibitors in comparison to dual therapy with peginterferon and ribavirin and with interferon free treatment regimen to thereby elucidate the possible mechanisms of protease-inhibitor… Read more about this study
- Who is it for?
- Ages 18 to 99 years
- Conditions the study is for
- Chronic Hepatitis C
- How many people
- 174 participants
- Where
- 1 siteAustria
- Study dates
- 1 Nov 2014to 31 Dec 2020
- Phase
- Observational
- Are there results?
- None posted in the registry
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 99 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: patients with chronic hepatitis C undergoing antiviral therapy
Who may be able to join
- chronic hepatitis C
- planned antiviral therapy
Who cannot join
- immunosuppressive medication
- active infection at baseline
- treatment with antibiotics within the last two weeks
Trial locations and contacts
1 site in 1 country.
Austria1 site
Department of Internal Medicine, Medical University of Graz
Graz, 8010
About this study
Official title: Neutrophil Function During Combination Therapy With Protease Inhibitors in Chronic Hepatitis C
The aim of this study is to characterize neutrophil function in patients undergoing chronic hepatitis C triple therapy with protease inhibitors in comparison to dual therapy with peginterferon and ribavirin and with interferon free treatment regimen to thereby elucidate the possible mechanisms of protease-inhibitor associated infections.
Read the detailed description
Chronic hepatitis C infection (CHC) is a major health problem, potentially leading to liver related mortality via complications of liver cirrhosis or hepatocellular carcinoma, and affects more than 185 million persons worldwide. Antiviral therapy evolved during the past 25 years from standard interferon, the combination with ribavirin and pegylated interferon (P/R) to the addition of protease inhibitors and is currently on the edge to an interferon-free era with the first such substances being approved in 2014. However, current standard therapy for CHC genotype 1 patients without cirrhosis consists of ribavirin and pegylated interferon (P/R) in combination with boceprevir (BOC) or telaprevir (TPV), which are direct acting antivirals and represent the first-generation protease inhibitors.
Triple therapy for CHC has been reported to be associated with a quantitative and qualitative increase in treatment-related (serious) adverse events compared to the former standard therapy without protease-inhibitors. Moreover, reports of serious infectious complications during triple therapy - especially in patients with acquired immune deficiencies like liver cirrhosis - that lead to considerable morbidity and mortality, have accumulated recently. The mechanisms of this increased susceptibility to infections remain unclear. However, BOC is known to inhibit neutrophil elastase activity.
Aims of this study were therefore to analyse infections that occurred in CHC outpatients during therapy in the study centre, to prospectively characterize neutrophil function in patients undergoing CHC triple therapy in comparison to dual therapy with peginterferon and ribavirin and to thereby elucidate the possible mechanisms of protease-inhibitor associated infections.
- Conditions
- Chronic Hepatitis C
- Medical subject headings
- Hepatitis C, Chronic
What is being measured
The primary outcome is the main question the study is designed to answer.
neutrophil phagocytosis
phagocytosis of labelled E.coli
Measured: 12 weeks
Secondary outcomes (1)
number of infections
reported infections
Measured: 12 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Sep 2015 (estimated)
- Study start1 Nov 2014
- Primary completion31 Dec 2020
- Study completion31 Dec 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Chronic Hepatitis CStudies of the same condition, open and under way.
- More trials run by Medical University of GrazThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 174 participants (actual)
Sponsor and investigators
- Lead sponsor
- Medical University of Graz
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Vanessa Statdlbauer, MD, Principal investigator, Medical University of Graz
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02545335
- Sponsor's protocol ID
- HCV-neutrophil
- Status last verified
- Jan 2023
- First submitted
- 29 Jul 2015
- Last updated
- 12 Jan 2023
- Results posted
- No
- Data monitoring committee
- No
Publications
Spindelboeck W, Horvath A, Tawdrous M, Schmerbock B, Zettel G, Posch A, Streit A, Jurse P, Lemesch S, Horn M, Wuensch G, Stiegler P, Stauber RE, Leber B, Stadlbauer V. Triple Therapy with First Generation Protease Inhibitors for Hepatitis C Markedly Impairs Function of Neutrophil Granulocytes. PLoS One. 2016 Mar 3;11(3):e0150299. doi: 10.1371/journal.pone.0150299. eCollection 2016.
PubMed 26938078Leber B, Balazs I, Horvath A, Posch A, Streit A, Spindelbock W, Feldbacher N, Stiegler P, Stauber RE, Rechberger GN, Kollroser M, Sattler W, Nusshold C, Stadlbauer V. Direct acting antiviral therapy rescues neutrophil dysfunction and reduces hemolysis in hepatitis C infection. Transl Res. 2021 Jun;232:103-114. doi: 10.1016/j.trsl.2020.12.005. Epub 2020 Dec 19.
PubMed 33352296
Study at a glance
From the registry record, last updated by the sponsor on 12 Jan 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Neutrophil Function During Combination Therapy With Protease Inhibitors in Chronic Hepatitis C
- ClinicalTrials.gov ID
- NCT02545335
- Acronym / sponsor ID
- HCV-neutrophil
- Conditions
- Chronic Hepatitis C
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 174 participants (actual)
- Lead sponsor
- Medical University of GrazUniversity, hospital or other
- Study start
- 1 Nov 2014 (actual)
- Primary completion
- 31 Dec 2020 (actual)
- Study completion
- 31 Dec 2020 (actual)
- First posted
- 9 Sep 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of this study is to characterize neutrophil function in patients undergoing chronic hepatitis C triple therapy with protease inhibitors in comparison to dual therapy with peginterferon and ribavirin and with interferon free treatment regimen to thereby elucidate the possible mechanisms of protease-inhibitor associated infections.
Detailed description
Chronic hepatitis C infection (CHC) is a major health problem, potentially leading to liver related mortality via complications of liver cirrhosis or hepatocellular carcinoma, and affects more than 185 million persons worldwide. Antiviral therapy evolved during the past 25 years from standard interferon, the combination with ribavirin and pegylated interferon (P/R) to the addition of protease inhibitors and is currently on the edge to an interferon-free era with the first such substances being approved in 2014. However, current standard therapy for CHC genotype 1 patients without cirrhosis consists of ribavirin and pegylated interferon (P/R) in combination with boceprevir (BOC) or telaprevir (TPV), which are direct acting antivirals and represent the first-generation protease inhibitors.
Triple therapy for CHC has been reported to be associated with a quantitative and qualitative increase in treatment-related (serious) adverse events compared to the former standard therapy without protease-inhibitors. Moreover, reports of serious infectious complications during triple therapy - especially in patients with acquired immune deficiencies like liver cirrhosis - that lead to considerable morbidity and mortality, have accumulated recently. The mechanisms of this increased susceptibility to infections remain unclear. However, BOC is known to inhibit neutrophil elastase activity.
Aims of this study were therefore to analyse infections that occurred in CHC outpatients during therapy in the study centre, to prospectively characterize neutrophil function in patients undergoing CHC triple therapy in comparison to dual therapy with peginterferon and ribavirin and to thereby elucidate the possible mechanisms of protease-inhibitor associated infections.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 to 99 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- patients with chronic hepatitis C undergoing antiviral therapy
Key inclusion criteria (2 listed)
- chronic hepatitis C
- planned antiviral therapy
Key exclusion criteria (3 listed)
- immunosuppressive medication
- active infection at baseline
- treatment with antibiotics within the last two weeks
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
neutrophil phagocytosis
Time frame: 12 weeks
phagocytosis of labelled E.coli
1 secondary outcome
number of infections
Time frame: 12 weeks
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Jan 2023.
- Results publication: PubMed 26938078Spindelboeck W, Horvath A, Tawdrous M, Schmerbock B, Zettel G, Posch A, Streit A, Jurse P, Lemesch S, Horn M, Wuensch G, Stiegler P, Stauber RE, Leber B, Stadlbauer V. Triple Therapy with First Generation Protease Inhibitors for Hepatitis C Markedly Impairs Function of Neutrophil Granulocytes. PLoS One. 2016 Mar 3;11(3):e0150299. doi: 10.1371/journal.pone.0150299. eCollection 2016.
- Results publication: PubMed 33352296Leber B, Balazs I, Horvath A, Posch A, Streit A, Spindelbock W, Feldbacher N, Stiegler P, Stauber RE, Rechberger GN, Kollroser M, Sattler W, Nusshold C, Stadlbauer V. Direct acting antiviral therapy rescues neutrophil dysfunction and reduces hemolysis in hepatitis C infection. Transl Res. 2021 Jun;232:103-114. doi: 10.1016/j.trsl.2020.12.005. Epub 2020 Dec 19.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Vanessa Statdlbauer, MD principal investigator
Medical University of Graz
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Chronic Hepatitis C, run by Medical University of Graz at 1 site in Austria.
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 2 inclusion and 3 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: finished, as of the sponsor's last update on 12 Jan 2023. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Austria. 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.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
neutrophil phagocytosis (time frame: 12 weeks). 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 NCT02545335, which also lists 2 linked publications.
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 12 Jan 2023.