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Tenofovir Disoproxil Fumarate Alone Versus its Combination with Emtricitabine for Treatment of Chronic Hepatitis B
This study is currently recruiting participants.
Summary | Eligibility | Citations | Contacts
Summary
Number |
07-dk-0207 |
Sponsoring Institute |
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) |
Recruitment Detail |
Type: Participants currently recruited/enrolled |
Referral Letter Required |
No |
Population Exclusion(s) |
Children |
Special Instructions |
Currently Not Provided |
Keywords |
Emtricitabine; |
Recruitment Keyword(s) |
Hepatitis B; |
Condition(s) |
Chronic Hepatitis B e Antigen Positive; |
Investigational Drug(s) |
Tenofovir/Emtricitabine |
Investigational Device(s) |
None |
Intervention(s) |
Drug: Tenofovir/ & Emtricitabine |
Supporting Site |
|
Tenofovir is an anti-viral drug approved for use in patients with HIV infection. In small studies in patients infected with both HIV and hepatitis B, tenofovir lowered the level of hepatitis B virus in the blood, with no viral resistance reported when used for up to 5 years. Emtricitabine is an anti-viral drug similar to lamivudine and is effective at lowering viral load and improving liver damage.
Patients 18 years of age and older with chronic hepatitis B may be eligible for this study. Participants are admitted to the NIH Clinical Center for a complete medical history and examination, including blood and urine tests, chest X-ray, electrocardiogram, abdominal ultrasound, Fibroscan (ultrasound exam of the liver that measures the amount of scarring), bone mineral density scan and liver biopsy. They are then randomly assigned to take combination treatment with tenofovir plus emtricitabine or tenofovir alone for at least 48 weeks. During the treatment period, patients visit the Clinical Center for blood tests and a physical examination every 2 weeks for the first month and then every 4 to 12 weeks. After 48 weeks, patients are readmitted to the Clinical Center for a complete evaluation that includes all the tests done at the start of therapy, including a liver biopsy. Patients who seem to have improved with treatment may continue therapy for up to 192 weeks, when they are again admitted to the Clinical Center for a complete medical evaluation and liver biopsy. Patients whose condition has not improved after 48 weeks of treatment have their treatment changed or stopped and continue to have regular outpatient clinic visits for 24 more weeks.
Eligibility
INCLUSION CRITERIA (nucleoside analogue-naive subjects):
-Age greater than 18 years and older, male or female.
-Known serum HBsAg positivity for 24 weeks.
-Detectable HBV DNA greater than 10(5) copies per ml.
-Serum ALT or AST levels 1.5 times the upper limit of normal (for ALT: greater than or equal to 62 U/L and for AST greater than or equal to 46 U/L) based on at least two determinations taken at least one month apart during the 24 weeks before study entry.
-Liver biopsy within 2 years of entry that is consistent with chronic.
-Written informed consent.
INCLUSION CRITERIA SALVAGE STUDY (nucleoside analogue experienced subjects):
-Age > 18 years and older, male or female
-Known serum HBsAg positivity for 6 months
-Detectable HBV DNA > 10(2) copies/ml.
-Liver biopsy within 5 years of entry that is consistent with chronic hepatitis
-Written informed consent
INCLUSION CRITERIA: SALVAGE STUDY (relapsers)
-Age greater than 18 years and older, male or female.
-Known serum HBsAg positivity for 6 months.
-Detectable HBV DNA greater than 10(3) copies per milliliter.
-Liver biopsy within 5 years of entry that is consistent with chronic hepatitis.
-Written informed consent.
Serum ALT or AST levels 1.5 times the ULN (for ALT: greater than 62 U/L and for AST: greater than 46 U/L) based on at least two determinations taken at least 2 weeks apart.
EXCLUSION CRITERIA:
-Previous or current treatment with tenofovir or emtricitabine.
-Co-infection with HDV as defined by the presence of anti-HDV in serum and/or HDV antigen in the liver.
-Co-infection with HCV as defined by the presence of HCV RNA in serum.
-Co-infection with HIV as defined by the presence of anti-HIV in serum.
-Decompensated liver disease as defined by serum bilirubin greater than 2.5 milligram per deciliter (with direct bilirubin greater than 0.5 milligram per deciliter), prothrombin time of greater than 2 seconds prolonged, a serum albumin of less than 3 grams per deciliter, or a history of ascites, variceal bleeding or hepatic encephalopathy.
-Presence of other causes of liver disease (i.e. hemochromatosis, Wilson disease, alcoholic liver disease, nonalcoholic steatohepatitis, alpha-1anti-trypsin deficiency).
-A history of organ transplantation or in the absence of organ transplantation, any immunosuppressive therapy requiring the use of more than 5 milligrams of prednisone (or its equivalent) daily.
-Significant systemic illness other than liver diseases including congestive heart failure, renal failure, chronic pancreatitis, diabetes mellitus with poor control that in the opinion of the investigator may interfere with therapy.
-Pregnancy or inability to practice contraception in patients capable of bearing or fathering children and lactating women.
-Hepatocellular carcinoma (HCC), or the presence of a mass on imaging studies of the liver that is suggest of HCc, or an alpha-fetoprotein level of greater than 500ng/mL.
-History of clinically apparent pancreatitis or evidence of subclinical pancreatitis as shown by serum amylase values twice the upper limits of the normal range and abnormalities of the pancreas on CT or other imaging studies of the abdomen.
-Sensory or motor neuropathy apparent from medical history and physical examination.
-Creatinine clearance less than 50 ml/min, serum creatinine greater than 1.3 mg/dl or urine protein greater than 1 gram/24 hours; creatinine clearance will be determined on the average of two 24 hour urine specimens. Accuracy of collection will be ensured by documenting appropriate total creatinine excretion in the 24 hour urine specimen (15mg/kg) and correcting for the patient's age, gender and body surface area.
-Concurrent use of nephrotoxic agents (e.g. aminoglycosides, amphotericin B, vancomycin, foscarnet, cis-platinum, pentamidine, nonsteroidal anti-inflammatory agents) or competitors of renal tubular excretion (e.g. probenecid) within 2 months prior to study screening or the expectation that the subject will receive these during the course of the study.
-History of hypersensitivity to nucleoside analogues.
-Active ethanol/drug abuse/psychiatric problems such as major depression, schizophrenia, bipolar illness, obsessive-compulsive disorder, severe anxiety, personality disorder that, in the investigator's opinion, might interfere with participation in the study.
-History of renal tubular acidosis.
-History of malignancy or treatment for a malignancy within the past 5 years.
-Presence of conditions that, in the opinion of the investigators, would not allow the patient to be followed in the current study for at least 5 years.
Citations:
Contacts:
Principal Investigator |
Referral Contact |
For more information: |
| Marc G. Ghany, M.D. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) National Institutes of Health BG 10 RM 9C432A MSC 1800 10 CENTER DR BETHESDA MD 20892-1800 (301) 402-5115 mg228m@nih.gov |
Elenita Rivera, R.N. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) National Institutes of Health Building 10 Room 8E 10 Center Drive Bethesda, Maryland 20892 (301) 496-3531 erivera@cc.nih.gov |
Patient Recruitment and Public Liaison Office Building 61 10 Cloister Court Bethesda, Maryland 20892-4754 Toll Free: 1-800-411-1222 TTY: 301-594-9774 (local),1-866-411-1010 (toll free) Fax: 301-480-9793 prpl@mail.cc.nih.gov |
Clinical Trials Number:
NCT00524173
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