Hepatitis B, ChronicNCT01311947
Hepatitis B Virus Mutants and the Therapeutic Effect of Peginterferon Alfa-2a in HBeAg-Positive Chronic Hepatitis B
An observational study of Hepatitis B, Chronic, run by China Medical University Hospital at 1 site in Taiwan.
Trial summary
In order to clarify the association between HBV mutations appearing before and during interferon therapy and the therapeutic effects, serial serum samples from 100 HBeAg-positive CHB patients undergoing peginterferon alfa-2a therapy will be collected and analyzed for the mutations of preS/S gene and BCP-preC/C region… Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Hepatitis B, Chronic
- What is being tested?
- Peginterferon alfa-2a
- How many people
- 103 participants
- Where
- 1 siteTaiwan
- Study dates
- Mar 2011to Mar 2012
- 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 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: HBeAg-positive chronic hepatitis B
Who may be able to join
- HBeAg-positive chronic hepatitis B patients on Peginterferon therapy
Who cannot join
- HBeAg-negative chronic hepatitis B patients HBeAg-positive chronic hepatitis B patients on other kinds of therapy
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Relation of Hepatitis B Virus Mutants and the Therapeutic Effect of Peginterferon Alfa-2a in HBeAg-Positive Chronic Hepatitis B
In order to clarify the association between HBV mutations appearing before and during interferon therapy and the therapeutic effects, serial serum samples from 100 HBeAg-positive CHB patients undergoing peginterferon alfa-2a therapy will be collected and analyzed for the mutations of preS/S gene and BCP-preC/C region, particularly for the deletion mutations. Furthermore, Real-Time PCR will be performed to measure the ratios of wild-type HBV and deletion mutant HBV before and at the end of peginterferon alfa-2a therapy. Finally, statistical analysis will be done to elucidate whether the mutations of preS/S gene and BCP-preC/C region have any relation with the therapeutic effect of peginterferon alfa-2a.
Read the detailed description
Hepatitis B virus (HBV) infection is a serious worldwide health issue. Approximately 400 million people worldwide are chronic hepatitis B (CHB) patients. Currently, two therapeutic methods can be used to treat CHB. One is the nucleos(t)ide analogues, the other is the interferon alfa. Interferon alfa acts mainly by enhancing the immune system and directly inhibits the virus to a limited extent. It is known that mutations at preS, S, basal core promoter, precore and core gene are associated with an increased risk of HCC. However, it remains to be clarified as to the relation between HBV mutations and the therapeutic responses to interferon treatment. In order to clarify the association between HBV mutations appearing before and during interferon therapy and the therapeutic effects, serial serum samples from 100 HBeAg-positive CHB patients undergoing peginterferon alfa-2a therapy will be collected and analyzed for the mutations of preS/S gene and BCP-preC/C region, particularly for the deletion mutations. Furthermore, Real-Time PCR will be performed to measure the ratios of wild-type HBV and deletion mutant HBV before and at the end of peginterferon alfa-2a therapy. Finally, statistical analysis will be done to elucidate whether the mutations of preS/S gene and BCP-preC/C region have any relation with the therapeutic effect of peginterferon alfa-2a.
- Conditions
- Hepatitis B, Chronic
- Being tested
- Peginterferon alfa-2a
- Keywords
- Chronic hepatitis B, Peginterferon alfa-2a
- 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.
Peginterferon alfa-2aDrug
Also called Pegasys
Peginterferon alfa-2a at 180 ug weekly for 24 weeks
What is being measured
The primary outcome is the main question the study is designed to answer.
Therapeutic response to Peginterferon Alfa-2a in HBeAg-Positive Chronic Hepatitis B
Measured: 24 weeks after the end of 24 weeks of Peginterferon alfa-2a treatment
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Mar 2011 (estimated)
- Study startMar 2011
- Primary completionMar 2012
- Study completionMar 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Hepatitis B, ChronicStudies of the same condition, open and under way.
- More trials run by China Medical University HospitalThe 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
- Retrospective
- Enrolment
- 103 participants (actual)
Sponsor and investigators
- Lead sponsor
- China Medical University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Cheng-Yuan Peng, China Medical University Hospital
- Investigators
- Cheng-Yuan Peng, MD, PhD, Principal investigator, China Medical University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01311947
- Sponsor's protocol ID
- DMR99-IRB-313
- Status last verified
- Jul 2013
- First submitted
- 8 Mar 2011
- Last updated
- 30 Jul 2013
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Desmond CP, Bartholomeusz A, Gaudieri S, Revill PA, Lewin SR. A systematic review of T-cell epitopes in hepatitis B virus: identification, genotypic variation and relevance to antiviral therapeutics. Antivir Ther. 2008;13(2):161-75.
PubMed 18505168
Study at a glance
From the registry record, last updated by the sponsor on 30 Jul 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Relation of Hepatitis B Virus Mutants and the Therapeutic Effect of Peginterferon Alfa-2a in HBeAg-Positive Chronic Hepatitis B
- ClinicalTrials.gov ID
- NCT01311947
- Acronym / sponsor ID
- DMR99-IRB-313
- Conditions
- Hepatitis B, Chronic
- Keywords
- Chronic hepatitis B, Peginterferon alfa-2a
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 103 participants (actual)
- Lead sponsor
- China Medical University HospitalUniversity, hospital or other
- Study start
- Mar 2011
- Primary completion
- Mar 2012 (actual)
- Study completion
- Mar 2012 (actual)
- First posted
- 10 Mar 2011 (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.
In order to clarify the association between HBV mutations appearing before and during interferon therapy and the therapeutic effects, serial serum samples from 100 HBeAg-positive CHB patients undergoing peginterferon alfa-2a therapy will be collected and analyzed for the mutations of preS/S gene and BCP-preC/C region, particularly for the deletion mutations. Furthermore, Real-Time PCR will be performed to measure the ratios of wild-type HBV and deletion mutant HBV before and at the end of peginterferon alfa-2a therapy. Finally, statistical analysis will be done to elucidate whether the mutations of preS/S gene and BCP-preC/C region have any relation with the therapeutic effect of peginterferon alfa-2a.
Detailed description
Hepatitis B virus (HBV) infection is a serious worldwide health issue. Approximately 400 million people worldwide are chronic hepatitis B (CHB) patients. Currently, two therapeutic methods can be used to treat CHB. One is the nucleos(t)ide analogues, the other is the interferon alfa. Interferon alfa acts mainly by enhancing the immune system and directly inhibits the virus to a limited extent. It is known that mutations at preS, S, basal core promoter, precore and core gene are associated with an increased risk of HCC. However, it remains to be clarified as to the relation between HBV mutations and the therapeutic responses to interferon treatment. In order to clarify the association between HBV mutations appearing before and during interferon therapy and the therapeutic effects, serial serum samples from 100 HBeAg-positive CHB patients undergoing peginterferon alfa-2a therapy will be collected and analyzed for the mutations of preS/S gene and BCP-preC/C region, particularly for the deletion mutations. Furthermore, Real-Time PCR will be performed to measure the ratios of wild-type HBV and deletion mutant HBV before and at the end of peginterferon alfa-2a therapy. Finally, statistical analysis will be done to elucidate whether the mutations of preS/S gene and BCP-preC/C region have any relation with the therapeutic effect of peginterferon alfa-2a.
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- HBeAg-positive chronic hepatitis B
Key inclusion criteria (1 listed)
- HBeAg-positive chronic hepatitis B patients on Peginterferon therapy
Key exclusion criteria (1 listed)
- HBeAg-negative chronic hepatitis B patients HBeAg-positive chronic hepatitis B patients on other kinds of therapy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Peginterferon alfa-2aAlso: PegasysPeginterferon alfa-2a at 180 ug weekly for 24 weeks | Drug | – |
Primary outcome
Therapeutic response to Peginterferon Alfa-2a in HBeAg-Positive Chronic Hepatitis B
Time frame: 24 weeks after the end of 24 weeks of Peginterferon alfa-2a treatment
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 30 Jul 2013.
- Background: PubMed 18505168Desmond CP, Bartholomeusz A, Gaudieri S, Revill PA, Lewin SR. A systematic review of T-cell epitopes in hepatitis B virus: identification, genotypic variation and relevance to antiviral therapeutics. Antivir Ther. 2008;13(2):161-75.
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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.
Cheng-Yuan Peng, MD, PhD principal investigator
China Medical University Hospital
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 Hepatitis B, Chronic, run by China Medical University Hospital at 1 site in Taiwan.
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 1 inclusion and 1 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 30 Jul 2013. 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 Taiwan. 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?
Therapeutic response to Peginterferon Alfa-2a in HBeAg-Positive Chronic Hepatitis B (time frame: 24 weeks after the end of 24 weeks of Peginterferon alfa-2a treatment). 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 NCT01311947, 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 30 Jul 2013.