CompletedPhase 2ACTRN12612000828820

A study of the safety of combining BIT225 with pegylated interferon and ribavirin, in patients with hepatitis C virus infection, including measurement of the concentration and distribution of BIT225 in the body and antiviral activity.

A Phase 2a, Placebo-Controlled, Randomised Study of the Safety, Pharmacokinetics and Antiviral Activity of BIT225 in Combination with Pegylated Interferon and Ribavirin in Patients with Hepatitis C Virus Infection.


Sponsor

Biotron Limited

Enrollment

24 participants

Start Date

Nov 23, 2010

Study Type

Interventional

Conditions

Summary

Biotron is developing a novel inhibitor of viral ion channel proteins in HCV and HIV-1, called BIT225. This early phase trial will assess the safety of BIT225, in combination with standard of care therapy of pegylated interferon and ribavirin in patients with HCV, who have not received any prior anti-viral therapy with ribavirin and/or interferon. It will also assess how well BIT225 is tolerated, the level of BIT225 in the blood following oral administration and how well BIT225 performs at reducing the HCV levels in the blood.


Eligibility

Sex: Both males and femalesMin Age: 18 YearssMax Age: 55 Yearss

Inclusion Criteria13

  • Males or females, aged 18 to 55 years
  • Chronic hepatitis C infection (defined as persistent HCV infection as diagnosed by detection of HCV RNA in the blood at least 6 months from initial detection).
  • Serologic evidence of HCV infection by anti-HCV antibody test.
  • Documentation of HCV genotype 1-infection at any time prior to entry. A laboratory report must be used for documentation. Those without known genotype at screening will have a screening genotype performed.
  • HCV RNA of >/= 105 IU/mL as measured by the ROCHE COBAS Amplicor Monitor 'registered trademark' version 2.0 method within 60 days of Entry
  • ALT (SGOT) , AST (SGPT), and alkaline phosphatase less than or equal to 5 times upper level of normal within 60 days of Entry.
  • For females of reproductive potential (defined as women who have not been post-menopausal for at least 24 consecutive months, i.e., who have had menses within the preceding 24 months, or women who have not undergone surgical sterilization, specifically hysterectomy, or bilateral oophorectomy and/or tubal ligation), must have a negative serum or urine pregnancy test with a sensitivity of at least 50mlU/mL within 60 days prior to study entry.
  • A negative serum or urine pregnancy test result is also required within 24 hours prior to the initiation of study treatment (Day -1)
  • All subjects must agree not to participate in a conception process (e.g., active attempt to become pregnant or to impregnate, sperm donation, in vitro fertilization).
  • If participating in sexual activity that could lead to pregnancy, the subject must agree to use two reliable methods of contraception simultaneously while receiving study treatment and for 6 weeks after stopping study treatment.
  • Subjects who are not of reproductive potential (women who have been post-menopausal for at least 24 consecutive months or have undergone hysterectomy, salpingotomy, and/or bilateral oophorectomy or men who have documented azoospermia) are eligible without requiring the use of contraceptives.
  • Provide written informed consent to participate in the study and be willing to comply with the study procedures.
  • Naive to therapy for HCV, including any interferon or ribavirin.

Exclusion Criteria37

  • Patients who have received an investigational drug for HCV.
  • Positive results for Hepatitis B (Hepatitis B surface antigen) and HIV antibody at Screening.
  • History or presence of other evidence of a medical condition associated with chronic liver disease (e.g., chronic or acute hepatitis B, acute hepatitis A, hemochromatosis, autoimmune hepatitis, Wilson’s disease, Gilbert’s syndrome, homozygote alpha1-antitrypsin deficiency, alcoholic liver disease, and toxin exposures).
  • Bridging cirrhosis or cirrhosis confirmed on a biopsy obtained within the past 36 months as judged by a local pathologist. Note: patients with Metavir (or equivalent index) stage 3 fibrosis on a previous biopsy or patients with no previous biopsy will require an abdominal ultrasound within 6 months of first dose showing no evidence of cirrhosis
  • History or signs of decompensated liver disease manifested by presence of Child-Pugh class B or C, ascites, variceal bleeding, or hepatic encephalopathy, spontaneous bacterial peritonitis, or other clinical signs of portal hypertension or hepatic insufficiency
  • History or other evidence of clinically significant renal disease.
  • Pregnancy or breast feeding, male partners of pregnant females.
  • Abnormal haematological and biochemical parameters within 60 days of Entry:
  • a. Absolute neutrophil count <1000/mm3
  • b. Haemoglobin <11 g/dL in females or 13 g/dL in males
  • c. Platelet count <150,000/mm3
  • d. International normalized ratio (INR) >1,5
  • e. Total bilirubin within normal reference range
  • f. Creatinine > 1.5 mg/dL
  • Estimated creatinine clearance < 80 mL/minute at Screening. Value will be calculated using the Cockcroft-Gault formula.
  • Screening ECG QTcB value >/= 450 ms.
  • The consumption / administration of prohibited concomitant medication (prescribed, over-the-counter or complementary) at the time of the Screening visit. Any medication taken from 28 days prior to first dose through to the end of the participation in the study must be approved by the Biotron Medical Monitor in consultation with the Investigator.
  • Active drug or alcohol use or dependence that, in the opionion of the site investigator, would interfere with adherence to study requirements.
  • A positive result on urine screen for drugs of abuse and alcohol breath test at Screening or Day -1 which in the opinion of the Investigator should preclude them from participation in the study.
  • History of severe psychiatric disease, which in the opinion of the Investigator should preclude them from participation in the study. Uncontrolled or active depression or other psychiatric disorder such as untreated Grade >/=3 psychiatric disorder, Grade >/=3 disorder not amenable to medical intervention, or any hospitalization within the past 52 weeks that in the opinion of the site investigator might preclude tolerability of study requirements.
  • Any prior suicide attempt.
  • History of immunologically mediated disease (e.g., inflammatory bowel disease, idiopathic thrombocytopenic purpura, lupus erythematosus, autoimmune haemolytic anaemia, scleroderma, severe psoriasis, rheumatoid arthritis requiring more than intermittent non-steroidal anti-inflammatory medications for management, etc.) that may be exacerbated by interferon use.
  • History or other evidence of chronic pulmonary disease associated with functional limitation.
  • History of documented or presumed coronary artery disease or cardiovascular disease, clinically significant arrhythmia.
  • History of a severe seizure disorder or current anticonvulsant use.
  • History of hepatocellular carcinoma (HCC) or findings suggestive of possible HCC, such as suspicious foci on imaging studies or elevated serum alpha-fetoprotein >50 ng/mL.
  • History of having received any systemic anti-neoplastic or immunomodulatory treatment (including supraphysiologic doses of steroids and radiation) within 6 months prior to the first dose of study drug or the expectation that such treatment will be needed at any time during the study.
  • History of major organ transplantation with an existing functional graft.
  • Active thyroid disease (use of thyroid hormone replacement therapy permitted by TSH or free T4 must be in normal range.) Any patient with a baseline increased risk for anaemia (e.g. thalassemia, spherocytosis, history of Gastrointestinal bleeding, etc) or for whom anaemia would be medically problematic.
  • History or other evidence of severe retinopathy.
  • Serious illness requiring systemic treatment and/or hospitalization within 24 weeks prior to entry; serious illness including malignancy, active coronary artery disease within 24 weeks prior to study entry; or other chronic medical conditions that may preclude completion of the protocol in the CRS investigator’s opinion. Such conditions may be discussed with the protocol chair/vice chair.
  • Known allergy/sensitivity oh any hypersensitivity to components of study drug or its formulation.
  • Heavy smokers (> 10 cigarettes per day) who are unable to refrain from smoking during the confinement periods in this trial.
  • Difficulty abstaining from grapefruit and grapefruit containing products from 7 days prior to the first dose of investigational product until the end of the dosing period.
  • Difficulty abstaining from high consumption of >2 cups coffee/tea/caffeine containing soft drinks per day.
  • Participation in a clinical study with an investigational drug, biologic, or device within 3 months prior to anticipated dose administration.
  • Current use of herbal medications or unwillingness to cease use during study participation.

Interventions

BIT225 200mg or 400mg, or placebo, once daily on days 0 and 28, and twice daily on days 1 to 27. BIT225 is supplied as a powder to be suspended immediately before use in 25mL of Orasweet Sugar Free, a

BIT225 200mg or 400mg, or placebo, once daily on days 0 and 28, and twice daily on days 1 to 27. BIT225 is supplied as a powder to be suspended immediately before use in 25mL of Orasweet Sugar Free, a taste masking agent. All participants will also receive standard of care therapy for Hepatitis C Virus (HCV) of pegylated interferon (alfa-2a or alfa-2b) (PEG-IFN) 180mg/week by subcutaneous injection and oral ribavirin (RBV) 1000-1200mg/day (weight based) for 48 weeks.


Locations(1)

Thailand

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ACTRN12612000828820


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