Racial differences in fibrosis progression after HCV-related liver transplantation

Area of Science:

• Hepatology
• Transplantation immunology
• Organ transplantation

Background:

• Black recipients of liver transplants (LT) for hepatitis C virus (HCV) show poorer outcomes than white recipients.
• Discrepancies are mainly observed in black recipients receiving livers from white donors.
• The underlying causes for these differences, potentially linked to HCV recurrence and fibrosis, remain unclear.

Purpose of the Study:

• To investigate and compare liver fibrosis progression in black and white liver transplant recipients with hepatitis C virus (HCV).
• To assess the impact of donor race on fibrosis progression and patient survival after HCV-related LT.
• To identify potential disparities in outcomes based on recipient-donor race combinations.

Main Methods:

• A multisite cohort study comparing fibrosis progression in 105 black and 364 white recipients post-HCV LT.
• Analysis of liver fibrosis stages (F3/F4) at 6, 12, and 24 months after transplantation.
• Assessment of patient survival rates across different recipient-donor race combinations.

Main Results:

• The black recipient/white donor (B/W) group exhibited significantly higher rates of severe fibrosis (F3/F4) compared to other race combinations.
• The adjusted odds ratio for severe fibrosis in the B/W group was 2.54, indicating a substantially increased risk.
• Black recipients with black donors showed fibrosis progression rates similar to white recipients, and patient survival was lower in the B/W group.

Conclusions:

• African American recipients receiving livers from white donors experience accelerated fibrosis progression following HCV-related LT.
• This high-risk, race-mismatched group warrants further investigation into the mechanisms driving accelerated fibrosis.
• Understanding these mechanisms is crucial for improving long-term outcomes in liver transplantation.