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1028
TEN-YEAR FOLLOW-UP OF LONG-TERM PEGINTERFERONALPHA
TREATMENT FOR CHRONIC DELTA HEPATITIS
Grace E Kim1, Julian Hercun1, Ben Da1, David E. Kleiner2,
Richard Chang3, Christopher Koh1 and Theo Heller1, (1)Liver
Diseases Branch, National Institute of Diabetes and Digestive
and Kidney Diseases, (2)Laboratory of Pathology, National
Cancer Institute, (3)Clinical Center, National Institutes of
Health
Background: Hepatitis delta virus (HDV) infection is the most
aggressive form of chronic hepatitis Response to 1 or 2 yearlong
peginterferon (IFN) treatment and sustained virological
response are sub-optimal We evaluated the long-term
outcomes of patients treated with an extended course of IFNalpha
at the National Institutes of Health Methods: Patients
were followed on a natural history protocol after completion of
trial NCT00023322, evaluating IFN treatment for up to 5 years
Baseline clinical and laboratory characteristics at treatment
initiation were recorded. Patients were classified according
to virological response defined as negative serum HDV RNA
(lower limit of detection 100 GE/mL) During extended followup,
long term survival and liver related events were recorded
Results: All 13 patients enrolled in the original study were
included in this analysis This group was 85% Caucasian and
85% male, with a mean age of 41 2 years at treatment initiation
The mean treatment duration was 75 months (range 2-397)
with a total follow-up duration of 104 months (range 2-211)
Patients had advanced compensated liver disease at baseline
with a median Ishak fibrosis score of 3, hepatic vein pressure
gradient of 11 mmHg, total bilirubin 0 9 mg/dL, and platelet
count 125 K/mcL Median AST was 80 U/L, ALT 84 U/L and
HDV RNA 7,300,000 GE/mL Baseline characteristics were
similar between both responders and non-responders At the
end of available follow-up, 7 (54%) patients had undetectable
HDV RNA levels. While two patients benefited from extension
of treatment beyond 5 years in order to achieve virological
response none required additional treatment afterwards
4 patients (31%) cleared hepatitis B surface antigen and
developed hepatitis B surface antibodies, however this was
not sustained in 1 case. In responders, a significant decrease
in ALT and AST (both p=0 016) was observed at end of followup
while no change was observed in non-responders No
changes in markers of cholestasis and platelet counts were
observed On long-term follow-up, 1/7 (14%) responders died
or had a liver related event (transplant, cholangiocarcinoma
or hepatocellular carcinoma) as opposed to 5/6 (83%) of
non-responders (p=0 03) Conclusion: With further follow-up,
extended course IFN-alpha therapy allows for sustained
clearance of HDV RNA in a majority of patients as well as
surface antigen seroconversion Treatment response is
significantly associated with favorable clinical outcomes. |
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