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Early Prediction of Successful Treatment for Chronic Hepatitis C Virus Infection in Taiwan

20. november 2008 oppdatert av: National Taiwan University Hospital

Hepatitis C virus (HCV) infection is a global health problem, which may lead to chronic hepatitis, cirrhosis, hepatic decompensation and hepatocellular carcinoma (HCC). Recently, treatment with peginterferon alfa plus ribavirin has become the standard of care for patients with chronic hepatitis C. While genotype 2 patients can have higher sustained virologic response (SVR) rates to 80-90%, genotype 1 patients generally have low SVR rates of only 40-50%. In contrast, genotype 1 Taiwanese patients have superior SVR rates than those in Western countries. Despite the overall improved response to this combination therapy, more than 75% of patients suffer from treatment-related adverse events and the costs remain high, which make individualized therapy of paramount importance to maximize treatment response and minimize adverse events.

HCV viral kinetics with interferon-based therapies have been studied recently to evaluate patient responses. Early viral kinetics shown to have favorable SVR rates, which make shorter treatment duration possible. However, different viral kinetics were found through ethnicity. Recently, a pilot study to evaluate the viral kinetics of 6 Taiwanese patients with HCV infection who received peginterferon alfa plus ribavirin therapy has shown superior early viral kinetics to those in Caucasian patients. Based on the favorable SVR rates in treating Taiwanese patients with chronic hepatitis C, the investigators aimed to conduct a large confirmatory study to evaluate the viral kinetics and try to define the optimal treatment for these patients.

Studieoversikt

Status

Ukjent

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Hepatitis C virus (HCV) infection is a global health problem, which may lead to chronic hepatitis, cirrhosis, hepatic decompensation and hepatocellular carcinoma (HCC). [1,2] Recently, treatment with peginterferon alfa plus ribavirin has become the standard of care for patients with chronic hepatitis C. While genotype 2 patients can have higher sustained virologic response (SVR) rates to 80-90%, genotype 1 patients generally have low SVR rates of only 40-50%. [3-5] In contrast, genotype 1 Taiwanese patients have superior SVR rates that those in Western countries. [6,7] Despite the overall improved response to this combination therapy, more than 75% of patients suffer from treatment-related adverse events and the costs remain high, [8,9] which make individualized therapy of paramount importance to maximize treatment response and minimize adverse events.

HCV viral kinetics with interferon-based therapies have been studied recently to evaluate patient responses. [10-14] Early viral kinetics shown to have favorable SVR rates, which make shorter treatment duration possible. [15-18] However, different viral kinetics were found through ethnicity. [19-23] Recently, a pilot study to evaluate the viral kinetics of 6 Taiwanese patients with HCV infection who received peginterferon alfa plus ribavirin therapy has shown superior early viral kinetics to those in Caucasian patients. [24] Based on the favorable SVR rates in treating Taiwanese patients with chronic hepatitis C, the investigators aimed to conduct a large confirmatory study to evaluate the viral kinetics and try to define the optimal treatment for these patients.

Studietype

Observasjonsmessig

Registrering (Forventet)

300

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Israel
      • Ramat-Gan, Israel
        • Rekruttering
        • Faculty of Life Sciences, Bar-Ilan University
        • Hovedetterforsker:
          • Avidan Uriel Neumann, MD, PhD
  • Taiwan
      • Douliou, Taiwan
        • Rekruttering
        • National Taiwan University Hospital, Yun-Lin branch
      • Taichung, Taiwan
        • Rekruttering
        • Taichung Veterans General Hospital
        • Hovedetterforsker:
          • Sheng-Shun Yang, MD
      • Taipei, Taiwan, 100
        • Rekruttering
        • National Taiwan University Hospital
        • Underetterforsker:
          • Chen-Hua Liu, MD
        • Underetterforsker:
          • Chun-Jen Liu, MD,PhD
      • Taipei, Taiwan
        • Rekruttering
        • Far Eastern Memorial Hospital
      • Taipei, Taiwan
        • Rekruttering
        • Buddhist Tzu Chi General Hospital
      • Taipei, Taiwan
        • Rekruttering
        • Ren-Ai Branch, Taipei Municipal Hospital

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

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Sannsynlighetsprøve

Studiepopulasjon

Patients with chronic hepatitis C virus infection who receive pegylated interferon plus ribavirin for an overall of 24-48 weeks

Beskrivelse

Inclusion Criteria:

  • Treatment naïve
  • Over 18 years old
  • Anti-HCV (Abbott HCV EIA 2.0, Abbott Diagnostic, Chicago, IL) positive > 6 months
  • Detectable serum quantitative HCV-RNA (Cobas Amplicor HCV Monitor v2.0, Roche Molecular Systems, Pleasanton, CA) with dynamic range 600~< 500,000 IU/ml
  • Serum alanine aminotransferase levels above the upper limit of normal with 6 months of enrollment
  • A liver biopsy consistent with the diagnosis of chronic hepatitis C

Exclusion Criteria:

  • Anemia (hemoglobin < 13 gram per deciliter for men and < 12 gram per deciliter for women)
  • Neutropenia (neutrophil count < 1,500 per cubic milliliter)
  • Thrombocytopenia (platelet < 90,000 per cubic milliliter)
  • Co-infection with hepatitis B virus (HBV) or human immunodeficiency virus (HIV)
  • Chronic alcohol abuse (daily consumption > 20 gram per day)
  • Decompensated liver disease (Child-Pugh class B or C)
  • Serum creatinine level more than 1.5 times the upper limit of normal
  • Autoimmune liver disease
  • Neoplastic disease
  • An organ transplant
  • Immunosuppressive therapy
  • Poorly controlled autoimmune diseases, pulmonary diseases, cardiac diseases, psychiatric diseases, neurological diseases, diabetes mellitus
  • Evidence of drug abuse
  • Unwilling to have contraception
  • Unwilling to receive serial blood sampling during the study

Studieplan

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

Hvordan er studiet utformet?

Designdetaljer

Kohorter og intervensjoner

Gruppe / Kohort
Intervensjon / Behandling
1
Patients with chronic hepatitis C who receive pegylated interferon plus ribavirin for 24 weeks (genotype 1 or 2) and for 48 weeks (genotype 1)
Legemiddel: Pegylated interferon alfa and ribavirin

Pegylated interferon alfa-2a 180 ug/week or pegylated interferon alfa-2b 1.5 ug/kg/week Ribavrin 800-1200 mg/day (genotype 1: < 75 kg 1000 mg/day, >=75 kg 1200 mg/day; genotype 2: 800 mg/day)

HCV genotype: baseline (Day 0) HCV RNA (real time PCR test): baseline (Day 0), Day 1 (4,8,12 hours after pegylated interferon + ribavirin), Day 2 (24,36 hours), Day 3(48 hours), Day 4 (72 hours), Day 5 (96 hours), Week 2,4,6,8,12,16,20,24, and 28,32,36,40,44,48,72 (for genotype 1 with 48 weeks of treatment), and 48 (for genotype 1 or 2 with 24 weeks of treatment)

Andre navn:
  • Pegasys pluss Robatrol
  • Peg-Intron plus Rebetol

Hva måler studien?

Primære resultatmål

Resultatmål
Tidsramme
Sustained virologic response (SVR)
Tidsramme: 1~1.5 years
1~1.5 years

Samarbeidspartnere og etterforskere

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

Sponsor

National Taiwan University Hospital

Samarbeidspartnere

National Science Council, Taiwan

Etterforskere

  • Hovedetterforsker: Chen-Hua Liu, MD, National Taiwan University Hospital
  • Studiestol: Jia-Horng Kao, MD, PhD, National Taiwan University Hospital
  • Hovedetterforsker: Avidan Uriel Neumann, PhD, Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel

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. januar 2006

Primær fullføring (Forventet)

1. oktober 2008

Studiet fullført (Forventet)

1. desember 2008

Datoer for studieregistrering

Først innsendt

10. oktober 2007

Først innsendt som oppfylte QC-kriteriene

10. oktober 2007

Først lagt ut (Anslag)

12. oktober 2007

Oppdateringer av studieposter

Sist oppdatering lagt ut (Anslag)

21. november 2008

Siste oppdatering sendt inn som oppfylte QC-kriteriene

20. november 2008

Sist bekreftet

1. februar 2008

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • 200709053R

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