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AASLD2017[927]
A Phase 2 Randomized Clinical Trial to Evaluate
the Safety and Efficacy of Pegylated Interferon
Lambda Monotherapy in Patients with
Chronic Hepatitis Delta Virus Infection. Interim
Results From the LIMT HDV Study
Saeed S. Hamid2, Ohad Etzion6, Yoav Lurie4, Nimrah Bader2,
David Yardeni6, Saleh M. Channa5, Minaz Mawani2, Om Parkash2,
Eduardo B. Martins1, Edward J. Gane3; 1Clinical Development,
Eiger BioPharmaceuticals, Palo Alto, CA; 2Aga Khan
University and Hospital, Karachi, Pakistan; 3Auckland City Hospital,
Auckland, New Zealand; 4Shaare Zedek Medical Center,
Jerusalem, Israel; 5Department of Gastroenterology, Ghulam
Muhammad Mahar Medical College, Sukkur, Pakistan; 6Gastroenterology
and Liver Disease Institute, Soroka University
Medical Center, Beer-Sheva, Israel
Background and Aims: Globally 15-20 million people are
coinfected with hepatitis delta (HDV) and hepatitis B (HBV)
viruses. Interferon (IFN) or pegylated (PEG) IFN-alfa have
been tested in patients with chronic HDV (CHD). Up to
25% of patients may become HDV PCR-negative, but most
relapse after therapy is discontinued and the tolerability
profile is unsatisfactory. PEG IFN lambda-1a (Lambda) is
a Type III IFN. Based on Lambda’s more limited receptor
distribution and previous data from HBV and HCV studies,
it is postulated that Lambda could induce HDV responses,
but with fewer side effects than IFN-alfa. LIMT HDV is
the first study of Lambda in patients with CHD infection,
including cirrhotics. Methods: Randomized, open-label
study of Lambda 120 or 180 μg subcutaneous injections
administered weekly for 48 weeks in patients with chronic
HDV. Major inclusion criteria were: positive HDV RNA by
qPCR, elevated ALT<10xULN, compensated liver disease
and platelets ≥90,000 cells/μL. HDV RNA (Robogene 2.0,
LLOQ 14 IU/mL), ALT, bilirubin and other parameters were
assessed at each visit. Tenofovir or entecavir were started
at baseline (BL) and will continue through the end of the
study. Results: To date, 20 patients (15 male, 7 cirrhotic),
median age 35 (20-54), have been enrolled; eight randomized
to Lambda 180 μg/week and 12 to 120 μg/week. At
BL, mean lab values were: HDV RNA 4.5 log10 IU/mL (SD
±1.36); ALT 104 IU/mL (47-364 IU/mL) and bilirubin 13
μmol/L (3-20 μmol/L). Mean Fibroscan score was 11.8 kPA
(4.6-27.4 kPA). To date, 13 and 11 patients have reached
Weeks 4 and 8 of therapy, respectively. At Week 4, 3/13
(23%) patients had HDV RNA < LLOQ, one of which was
PCR-negative. At Week 8, 6/11 (55%) had HDV RNA <
LLOQ, 3 of which were PCR-negative. HDV RNA drop from
BL>2 log10 was observed in 31% (4/13) and 46% (5/11) of
patients at Weeks 4 and 8, respectively. Three patients
had grade 3 elevations of ALT. Three patients developed
jaundice (two on 180 μg/week and one on 120 μg); two of
which required permanent drug discontinuation, and one
required temporary drug interruption and resumption at a
reduced dose (peak direct bilirubin 86, 465 and 36 μmol/L,
respectively). In all cases, jaundice was preceded by a rise
in GGT. Constitutional symptoms were less frequent and
milder than historical data with PEG IFN-alfa. Conclusions:
This interim analysis indicates that weekly Lambda – 120
μg or 180 μg – has antiviral activity against HDV, with
some patients already becoming PCR-negative by Week
8 of therapy. Overall, Lambda was well-tolerated, and
hyperbilirubinemia events in three patients responded to
dose reduction or discontinuation. Week 24 data will be
presented.
Disclosures:
Ohad Etzion - Advisory Committees or Review Panels: HepQuant LLC
Eduardo B. Martins - Employment: Eiger Biopharmaceuticals; Stock
Shareholder: Eiger Biopharmaceuticals
Edward J. Gane - Advisory Committees or Review Panels: Alios, Merck,
Janssen, Gilead Sciences; Board Membership: AbbVie; Speaking and
Teaching: Gilead Sciences, Merck, Alnylam, AbbVie
The following people have nothing to disclose: Saeed S. Hamid, Yoav Lurie,
Nimrah Bader, David Yardeni, Saleh M. Channa, Minaz Mawani, Om Parkash
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