Disease recurrence following Liver Transplantation
Key Points:
Long term survival following liver transplantation may be threatened by recurrence of the original disease
Hepatitis B
Greater risk in patients with active viral replication pre-transplant
Re-activation of Hep B may occur if the donor is Hep B Core antibody +
“Fibrosing cholestatic hepatitis” with massive viral replication may occur
Strategies to decrease Hep B recurrence or reactivation include:
Use of HBIG during anhepatic phase of the transplant, post-op and for 7 days post
Use of Lamivudine / 3TC or Adefovir to minimize HBV replication
Long term Lamivudine use may be associated with HBV mutation (YMDD)
Consider Adefovir if mutations occur
Redosing with HBIG either monthly or when the Hep B surface Antibody titer is < 500 IU/L (some centers use <100 IU/L)
Most centers use both HBIG and Lamivudine
Hepatitis C
Recurrence of HCV post-OLT is universal
50-90% of patients develop histologic hepatitis
High pre-transplant viremia (HCV RNA > 1 x 106 ) prior to OLT may be associated with diminished graft and patient survival post OLT
Natural history-progression to cirrhosis post OLT is shortened:
Non-transplanted patients- 20% of patients with cirrhosis after 20 years
Post-transplant patients- 20% of patients with cirrhosis after 5 years
5 year survival post OLT in patients with recurrent HCV
non-cirrhotic- 86%
cirrhotic <50%
Graft survival/patient survival decreased overall when compared to non HCV infected patients. This is influenced by degree of graft dysfunction, cholestasis, and stage of fibrosis
Anti-viral therapy (Interferon with/without Ribavirin) in the early post-transplant period to prevent recurrence has been of limited benefit
Ongoing studies will determine the benefit of anti-viral therapy/alternative immunosuppression strategies to improve graft and patient survival:
Possible role of long term “maintenance” therapy with PEG-Intron
Use of immunosuppression with “anti-fibrotic” properties (Sirolimus) or anti-viral properties (Cellcept)?
Minimizing steroids
Avoiding monoclonal antibodies (OKT-3) to treat rejection
IL-10 ?
Peg-Interferon
Hepatic malignancy
Risks include pre-transplant HCC > 5 cm, more than 3 tumors each > 3 cm vascular invasion
Pre-transplant strategies undergoing investigation to decrease tumor size and improve post-transplant outcomes include:
Chemoembolization
Radiofrequency ablation
Alcohol ablation
Biliary malignancy
Historically, patients with cholangiocarcinoma have not been transplanted due to poor outcomes
Recent evidence (Mayo clinic) using a protocol of external beam radiation and chemotherapy pre-operatively has been associated with significant decrease in tumor recurrence post-op
Primary sclerosing cholangitis
Histologic evidence of PSC recurrence post OLT has been reported in up to 20% of patients
Time to recurrence ranges between 1 and 10 years (median 3 years)
Outcomes following recurrence are favorable, although a small percentage of patients may develop graft failure
Primary biliary cirrhosis
Various reports have indicated that PBC may be recurrent in 15-20% of patients post OLT
Median time to recurrence 5.6 years post-op
Although contentious, reports in the literature indicate a higher PBC recurrence in patients treated with Tacrolimus
Many transplant centers adopt a policy of continuing patients on Ursodeoxycholic acid post-OLT
Autoimmune Hepatitis
True incidence of recurrence post-OLT not well defined
May recur despite adequate immunosuppression
May be heralded by increase in ANA titers
Potentially prevented by not discontinuing steroids or Cellcept post-OLT