Recruitment

Recruitment Status
Active, not recruiting
Estimated Enrollment
300

Exclusion Criteria

Children under 18 years of age, participants with anemia
Hgb<10 or Hct<30, congestive heart failure or chronic lung disease requiring oxygen, active coronary artery disease with unstable angina, sepsis or renal failure, other significant medical conditions, autoimmune disease or immunosuppression.
Children under 18 years of age, participants with anemia
Hgb<10 or Hct<30, congestive heart failure or chronic lung disease requiring oxygen, active coronary artery disease with unstable angina, sepsis or renal failure, other significant medical conditions, autoimmune disease or immunosuppression.

Summary

Conditions
Hepatitis B
Type
Observational
Design
  • Observational Model: Other
  • Time Perspective: Prospective

Participation Requirements

Age
Between 18 years and 125 years
Gender
Both males and females

Description

Aim 1: The clinical and virological status of chronic Hepatitis B (HBV) infection is defined by distinct patterns of immune effector and regulatory responses: The investigators propose that one or more immune regulatory are induced during chronic hepatitis B that define the extent of immune toleranc...

Aim 1: The clinical and virological status of chronic Hepatitis B (HBV) infection is defined by distinct patterns of immune effector and regulatory responses: The investigators propose that one or more immune regulatory are induced during chronic hepatitis B that define the extent of immune tolerance vs. activation with associated disease activity and viremia. Towards this end, the immune effector and regulatory responses relative to serum HBV DNA, alanine aminotransferase (ALT), Hepatitis B e antigen (HBeAg), Hepatitis B surface antigen (HBsAg) and liver histology will be examined in a cross-sectional manner in patients with chronic HBV and control groups. Aim 2: Clinical hepatitis flares during chronic hepatitis B reflect altered balance between immune regulatory and effector responses.

Exclusion Criteria

Children under 18 years of age, participants with anemia
Hgb<10 or Hct<30, congestive heart failure or chronic lung disease requiring oxygen, active coronary artery disease with unstable angina, sepsis or renal failure, other significant medical conditions, autoimmune disease or immunosuppression.
Children under 18 years of age, participants with anemia
Hgb<10 or Hct<30, congestive heart failure or chronic lung disease requiring oxygen, active coronary artery disease with unstable angina, sepsis or renal failure, other significant medical conditions, autoimmune disease or immunosuppression.

Tracking Information

NCT #
NCT01298037
Collaborators
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Investigators
  • Principal Investigator: Kyong-Mi Chang, MD University of Pennsylvania
  • Kyong-Mi Chang, MD University of Pennsylvania