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Entecavir Plus Tenofovir Combination in Subjects With Multi-drug Resistant Chronic Hepatitis B Virus Infection

30. januar 2014 oppdatert av: Sang Hoon Ahn, Yonsei University

A Multicenter, Open-label, Prospective Study to Evaluate Antiviral Efficacy and Safety of Entecavir Plus Tenofovir Combination in Subjects With Multi-drug Resistant Chronic Hepatitis B Virus Infection

Entecavir(ETV) plus Tenofovir Disoproxil Fumarate(TDF) combination will show effective antiviral activity and prevent further development of antiviral resistance in hepatitis B e antigen(HBeAg)-positive or -negative Chronic Hepatitis B(CHB) patients who experienced multidrug resistance

All subjects will orally take investigational drugs once daily for 48 weeks. All subjects will be assessed at baseline, Week 4, 12, 24, 36 and 48. Evaluations at each visit will include vital signs, physical examinations, laboratory tests and HBV DNA levels. They were also questioned about adverse events and concomitant medications. At baseline and every six months thereafter, serum will be assayed for HBV serology. Genotypic analysis will be performed at baseline and 48 weeks.

Studieoversikt

Status

Ukjent

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

  1. It has been one of unsolved issues and unmet needs in CHB management to develop an optimal combination regimen to manage multidrug resistant HBV characterized by selection of variants with two or more classes A of signature genotypic resistant mutations1-3
  2. Currently adding on Adefovir(ADV) has been generally recommended in Lamivudine(LAM)- or Telbivudine(LdT)-resistant patients but little is known about the optimal management of CHB patients who developed multidrug resistance4
  3. Recent report has shown that the combination of LAM plus ADV did not suppress HBV DNA effectively in CHB patients with resistance mutations to both drugs. Only 12.2% of these pts achieved virologic response(VR; HBV DNA <60 IU/mL) at 12 months and multivariable analysis showed that LAM+ADV group and the presence of the rtA181V/T mutation were independently associated with a decreased rate of virologic response (HBV DNA <2,000 IU/ml) at 12 months4
  4. ETV has been demonstrated to be effective in patients with ADV resistance but not in patients with proven YMDD mutation. In contrast, TDF has been shown to be effective in patients with YMDD mutation but not necessarily in all patients with ADV resistance.1-3
  5. Thus theoretically, the combination of the most potent nucleoside analogue and nucleotide analogue with non-overlapping resistance profiles, such as ETV plus TDF, is expected to be a promising salvage treatment for multidrug resistant HBV but clinical evidence is limited
  6. Therefore, this study will explore that adequate management of multidrug resistant patients using ETV plus TDF combination may lead to faster and greater viral suppression and prevent further emergence of antiviral resistance

All subjects will orally take investigational drugs once daily for 48 weeks. All subjects will be assessed at baseline, Week 4, 12, 24, 36 and 48. Evaluations at each visit will include vital signs, physical examinations, laboratory tests and HBV DNA levels. They were also questioned about adverse events and concomitant medications. At baseline and every six months thereafter, serum will be assayed for HBV serology. Genotypic analysis will be performed at baseline and 48 weeks.

Studietype

Intervensjonell

Registrering (Forventet)

90

Fase

  • Fase 4

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

20 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

  1. ≥ 20 years of age
  2. History of HBsAg positive for more than 6 months
  3. Subject who has a history of genotypic resistance to NAs from two different classes A
  4. Detectable HBV DNA (≥ 60 IU/mL) while on any rescue treatment regimen for at least 24 weeks
  5. HBeAg-positive and -negative
  6. Compensated liver disease (Child-Pugh A)
  7. Signed written informed consent after being instructed about the objective and procedure of the clinical study

Exclusion Criteria:

  1. Subjects with Alanine Aminotransferase(ALT) > 10xUpper Limit of normal(ULN)
  2. Co-infected with hepatitis C virus(HCV) or HIV
  3. Pregnant or lactating woman
  4. Subject who needs long-term administration of drugs including immunosuppressive agents, agents related to high risk in the hepatic/renal toxicity, agents influencing renal excretion
  5. History of liver transplantation or planned for liver transplantation
  6. Subject who was diagnosed malignant tumor and has been receiving chemotherapy
  7. Subject who has hepatocellular carcinoma(HCC) history or who shows potential HCC finding such as suspicious region in the radiologic exam(abdominal US or CT) or serum Alpha Feto Protein(AFP) elevation
  8. Renal Insufficiency (CLcr < 50ml/min based on Cockcroft-Gault equation considering weight, ages and serum creatinine)
  9. Patient who has a liver disease other than chronic hepatitis B (e.g. hemochromatosis, Wilson's disease, alcoholic liver disease, nonalcoholic fatty liver disease, alpha 1-antitrypsin deficiency etc.)
  10. Subject who has a history of hypersensitivity to study drug or its ingredients
  11. Subject who is involved in other clinical trial within 60 days prior to study entry
  12. Subject who the investigator deems inappropriate to participate in this study

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: N/A
  • Intervensjonsmodell: Enkeltgruppeoppdrag
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Entecavir 1.0mg + Tenofovir 300mg
All subjects will orally take investigational drugs once daily for 48 weeks.
Legemiddel: Entecavir + Tenofovir (MDR group)
Entecavir 1.0mg + Tenofovir 300mg
Andre navn:
  • Entecavir 1.0mg - Braclude
  • Tenofovir 300mg - Viread

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
The proportion of subjects who achieve virologic response(HBV DNA < 60 IU/mL, approximately 300 copies/mL) by real-time PCR at Week 48
Tidsramme: at Week 48
To evaluate the proportion of subjects who achieve virologic response(HBV DNA < 60 IU/mL, approximately 300 copies/mL) by real-time Polymerase chain reaction(PCR) at Week 48 after Entecavir plus Tenofovir combination therapy
at Week 48

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Virologic, serologic, biochemical efficacy and safety profile, as measured by the incidence of clinical adverse events and laboratory abnormalities including renal marker
Tidsramme: Week 4, 12, 24, 36, and 48
To evaluate virologic, serologic and biochemical response and safety of Entecavir plus Tenofovir combination therapy for 48 weeks
Week 4, 12, 24, 36, and 48

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Yonsei University

Samarbeidspartnere

Bristol-Myers Squibb
Seoul St. Mary's Hospital
The Catholic University of Korea

Etterforskere

  • Hovedetterforsker: Sang Hoon Ahn, MD, PhD, Yonsei University

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart

1. august 2012

Primær fullføring (Forventet)

1. april 2014

Studiet fullført (Forventet)

1. april 2014

Datoer for studieregistrering

Først innsendt

7. mai 2012

Først innsendt som oppfylte QC-kriteriene

8. mai 2012

Først lagt ut (Anslag)

9. mai 2012

Oppdateringer av studieposter

Sist oppdatering lagt ut (Anslag)

31. januar 2014

Siste oppdatering sendt inn som oppfylte QC-kriteriene

30. januar 2014

Sist bekreftet

1. januar 2014

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • AI463-273

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

Kliniske studier på Kronisk hepatitt B

Kliniske studier på Entecavir + Tenofovir (MDR group)

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Sponsorer og samarbeidspartnere

Medisinsk tilstand

Legemiddelintervensjoner

CROs by country

CROs in Papua New Guinea

Forhold

Sjeldne sykdommer

Legemiddelintervensjoner

Kosttilskudd

Sponsor / samarbeidspartnere

Steder

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