- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT00476411
A Study to Test the Efficacy of the HBV Vaccine and to Look at the Prevalence of HBV Infection
The Efficacy of HBV Vaccine Response and Prevalence of Occult HBV Infection in Isolated Anti HBc Between HIV Infected and HIV Un-infected Thai Patients
Studieoversigt
Detaljeret beskrivelse
The prevalence of the Hepatitis B core antigen (anti-HBc)in the Thai population is about 70 %. No data of isolated anti-HBc is reported. Anti-HBc antigen is observed in 10%-20% of individuals from low endemic areas of HBV infection. The prevalence of isolated antiHBc antigen is expected to be higher in endemic areas of HBV infection. There is conflicting data of occult HBV infection in HIV-infected patients. In Thailand, perinatal transmission is the main route of HBV transmission, different from developed countries. Therefore, isolated anti-HBc in Thai people has longer duration than low prevalence regions. Moreover, HBV genotype C and B is common in this region. HBV genotype C is correlated with more cirrhosis and hepatoma than genotype B. A study from Taiwan demonstrated that HBV DNA > 100,000 copies/ml is correlated with cirrhosis and hepatoma. Sustained reduction of HBV replication lowers the risk of hepatoma in HBV related cirrhosis. If the HBV vaccination could eliminate an occult HBV infection in these individuals, the liver related mortality will be reduced.
The prevalence and its clinical importance of isolated anti-HBc in the Thai population has not been investigated yet. There is also limited data of HBV vaccine response in this setting.
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
-
Bangkok, Thailand, 10330
- HIV-NAT Thai Red Cross AIDS Research Center
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- HIV-infected adults followed at HIV-NAT and HIV-NAT affiliated hospitals and Un-infected HIV adults followed at chulalongkorn hospital and blood bank
- AntiHBc positive without HBsAg and antiHBs
- Written inform consent
Exclusion Criteria:
- Patients receiving, or with an anticipated need to receive, any concomitant medications with the potential to decrease the response to HBV vaccine such as long term steroid user, chemotherapy, cancer
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Eksperimentel: 1
HBV vaccine
|
HBV vaccine 3 doses at month 0, 1, and 6
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
HBV DNA in HIV-infected patients presenting with a serological pattern of isolated anti-HBcAg compare to non HIV patients with isolated antiHBc
Tidsramme: 1 year
|
1 year
|
Sekundære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
antiHBs titer after 2 month of third dose of HBV vaccine in both 2 groups
Tidsramme: 1 year
|
1 year
|
|
liver function test after HAART in HIV patients compare between negative and positive HBV DNA
Tidsramme: 1 year
|
1 year
|
|
3TC resistant after 3TC containing HAART in HIV patients with detectable HBV DNA prior treatment
Tidsramme: 1 year
|
1 year
|
Samarbejdspartnere og efterforskere
Efterforskere
- Ledende efterforsker: Anchalee Avihingsanon, MD, HIV-NAT, Thai Red Cross AIDS Research Center
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- HIV-NAT 036
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .