Evaluation of the Safety and Pharmacology of EYP001 in HBV Subjects

A Randomized, Double-blind, Placebo-controlled Study to Determine the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of the FXR-agonist EYP001a in Chronically HBV Infected Subjects

Bile acids regulating farnesoid X receptor (FXR) interact with hepatitis B virus replication. EYP001a is a selective, synthetic FXR agonist under development for the treatment of hepatitis B.

This Phase 1b study is designed primarily to determine the safety, tolerability, pharmacokinetics and pharmacodynamics of EYP001a in chronically HBV infected subjects.

Study Overview

• Status: Completed
• Conditions: Hepatitis B, Chronic
• Intervention / Treatment: Drug: EYP001a; Drug: Placebo; Drug: Entecavir; Drug: peg-interferon alfa-2a

Detailed Description

This is a multicenter, randomized, double-blind, placebo-controlled two-part trial.

In Part A, EYP001a will be administered as 29 days monotherapy. Three dose-levels and 2 dosing regimens of EYP001a will be explored against placebo. The design also includes an open-label standard of care Entecavir monotherapy arm (comparator). Subjects will be randomly assigned to one of the 6 treatment arms:

• Treatment A: oral EYP001a
• Treatment B: oral EYP001a
• Treatment C: oral EYP001a
• Treatment D: oral EYP001a
• Treatment E: oral placebo
• Treatment F: oral Entecavir

In Part B, EYP001a or placebo will be administered as 29 days combination therapy with the standard of care Peg-IFNα2a. Subjects will be randomly assigned to one of the 3 treatment arms:

• Treatment G: oral EYP001a plus open label Peg-INFα2a administered as subcutaneous injection
• Treatment H: oral EYP001a plus open label Peg-INFα2a administered as subcutaneous injection
• Treatment I: oral placebo plus open label Peg-INFα2a administered as subcutaneous injection

Subjects enrolled in Part A are eligible for participation in Part B.

Participation will include a 40 day screening period, a 29 day treatment period and a 6 day follow-up evaluation period. For subjects who participate in both Parts A and B, a 14 washout period between Parts A and B will be included.

The safety and tolerability of EYP001a will be assessed by evaluating physical examinations, vital signs, ECGs, clinical laboratory parameters, and adverse events.

• Study Type: Interventional
• Enrollment (Actual): 73
• Phase: Phase 1

Contacts and Locations

Study Locations

• Australia
  • New South Wales
    • Sydney, New South Wales, Australia, 2031
      • Scientia Clinical Research Limited
  • Western Australia
    • Perth, Western Australia, Australia, 6009
      • Linear Clinical Research Limited
• Netherlands
  • Amsterdam, Netherlands
    • Academic Medical Centre (AMC)
  • Rotterdam, Netherlands
    • Erasmus MC
• Poland
  • Białystok, Poland
    • Klinika Chorób Zakaźnych I Hepatologii UMB
  • Kielce, Poland, 25-317
    • Klinika Chorób Zakaźnych
  • Lublin, Poland
    • HepID
• Thailand
  • Bangkok, Thailand, 10330
    • King Chulalongkorn Memorial Hospital
  • Bangkok, Thailand, 10400
    • Hospital for Tropical Diseases

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Have given voluntary written informed consent;

2. Have a documented medical history of chronic HBV infection (within 12 months of screening visit), both results:

   • Documented positive hepatitis B surface antigen (HBsAg) and
   • Documented HBV DNA > 1000 IU/mL
3. Is anti-HBV treatment naive or treatment experienced (see also exclusion criterion #3).
4. Gender: male or female.
5. Age: 18 to 65 years inclusive.
6. Body mass index (BMI): 17.0-35.0 kg/m2 inclusive.
7. Has clinical chemistry, hematology, coagulation and urinalysis tests within normal, allowable limits (with the exception of alanine aminotransferase [ALT]); see inclusion criterion #10); if there is an out of range value, the result must be considered clinically non-significant by the investigator in order to be eligible.

8. Vital signs after at least 5 minutes resting in supine position at screening within the following ranges:

   • systolic blood pressure: between 90 mm Hg and 145 mm Hg
   • diastolic blood pressure: between 45 mm Hg and 90 mm Hg
   • heart rate: between 40 bpm and 100 bpm
9. Have no clinically significant abnormal 12-lead automatic electrocardiogram (ECG) (incomplete right bundle branch block can be accepted) at screening: PR interval between 120 ms -and 210 ms, QRS-duration < 120 ms, QTc-interval (Fridericia's) ≤ 450 msec.
10. ALT at screening ≤ 5 x upper limit of normal (ULN).
11. Agrees to abstain from all medication, including non-prescription and prescription medication for 28 days prior to the Day 1 study visit, except for authorized medications (such as hormonal contraceptives for females, vitamins prescribed per label dosages and paracetamol). On a case-by-case basis, regular co-medication either as defined on the medication exception list or as documented by written approval from the sponsor as acceptable prior to randomization, will not be considered as a deviation from this criterion.
12. At screening, females must be non-pregnant and non-lactating, or of non-childbearing potential (either surgically sterilized or physiologically incapable of becoming pregnant, or at least 1 year post-menopausal [amenorrhea duration of 12 consecutive months); non-pregnancy will be confirmed for all females by a pregnancy test conducted at screening and at follow-up visit.
13. Female subjects of child-bearing potential, with a fertile male sexual partner, should be willing to use adequate contraception from screening until 90 days after the follow-up visit. Adequate contraception is defined as using hormonal contraceptives or an intrauterine device combined with at least 1 of the following forms of contraception: a diaphragm or cervical cap, or a condom. Also, total abstinence, in accordance with the lifestyle of the subject, is acceptable.
14. Male subjects, if not surgically sterilized, should be willing to use adequate contraception and not donate sperm from the Day 1 visit to the clinical research centre until 90 days after the follow-up visit. Adequate contraception for the male subject (and his female partner) is defined as using hormonal contraceptives or an intrauterine device combined with at least 1 of the following forms of contraception: a diaphragm or cervical cap, or a condom. Also, total abstinence, in accordance with the lifestyle of the subject is acceptable.
15. At screening, has no recent (<3 months) history of any clinically significant conditions, which, in the opinion of the investigator, would jeopardize the safety of the subject or impact the validity of the study results.
16. Willingness to abstain from alcohol from 48 hours prior to each study visit to the clinical research centre.

Exclusion Criteria:

1. Employee of a CRO participating in this study or the Sponsor.

2. Has certain or probable compensated liver cirrhosis documented by at least 2 of the following:

   1. Optional assessment: has documented liver histology Metavir score (F4), Ishak >5 or Scheuer (F4)
   2. Mandatory assessment: has presence or history of ascites, spontaneous bacterial peritonitis, esophageal varices, hepatic encephalopathy
   3. Mandatory assessment: platelet count below 90,000/uL within 12 months of screening visit
   4. Optional assessment: positive indirect blood test of APRI or FIB4 or positive direct blood test Fibrosure, Fibrotest, or FibroSpect within 12 months of screening visit
   5. Optional assessment: has positive elastography within 6 months of screening visit (Fibroscan or Shearwave Aixplorer)
   6. Optional assessment: has abnormal liver imaging (CT/US/MRI) consistent with a lobular/nodular liver and cirrhosis or indirect signs of portal hypertension.
3. Subject is HBV treatment experienced AND currently on anti-HBV treatment during the 30 days (or 5 half-lives of the considered anti-HBV drug, whichever is longer) before the first investigational product administration and until the last study visit.
4. Co-infection with active hepatitis C virus (HCV, except for patients with sustained viral response SVR, who can be included).
5. Co-infection with human immunodeficiency virus (HIV) Note: hepatitis D virus (HDV) status is not required for randomization and if not available can be established during the Day 1 visit with baseline PD virology assessments.
6. Receives or plans to receive systemic immunosuppressive or immunomodulating medications (e.g. IFN) during the study or ≤ 4 months prior to the first investigational product administration.
7. Has clinically relevant immunosuppression from, but not limited to immunodeficiency conditions such as common variable hypogammaglobulinemia.
8. Clinical diagnosis of substance abuse during ≤ 12 months prior to screening with narcotics or cocaine or with alcohol (regular consumption > 21 units/week [men] and > 14 units/week [women]; 1 unit = 1⁄2 pint of beer, 25 mL shot of 40% spirit or a 125 mL glass of wine. Expressed in g/day: > 30 g/day [men] and > 20 g/day [women]).
9. Has a positive drug urine screen (cocaine, phencyclidine, amphetamines (incl. methamphetamines), opiates (incl. heroin, codeine and morphine), benzodiazepines, barbiturates, methadone or alcohol screen. Subjects who admit the occasional use of cannabis will not be excluded as long as they are able to abstain from cannabis when they are assessed at study visits.
10. Has any known pre-existing medical or psychiatric condition that could interfere with the subject's ability to provide informed consent or participate in study conduct, or that may confound study findings.
11. Has a history of long QT syndrome.
12. Has a history of clinically significant gastrointestinal disease, especially peptic ulcerations, gastrointestinal bleeding, ulcerative colitis, Crohn's disease or Inflammatory Bowel Syndrome, renal, hepatic, neurologic, hematologic, endocrine, oncologic, pulmonary, immunologic, or cardiovascular disease or any other condition which, in the opinion of the investigator, would jeopardize the safety of the subject or impact the validity of the study results.
13. Has participated in any drug study within 40 days prior to the first drug administration in the current study. Note: Part A participation to this study is acceptable and not an exclusion criteria when considering eligibility for Part B, under the condition that follow-up visit of Part A has been completed and no investigational product related SAEs have occurred during Part A.
14. Has an uncontrolled ongoing illness at screening (e.g., active viral infection).
15. Has had major surgery within 30 days prior to the first drug administration, or within 6 months for gastrointestinal surgery prior to the first drug administration.
16. Has a history of relevant drug and/or food allergies.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

9

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Treatment A; oral EYP001a	Drug: EYP001a; Capsules administered orally. Number of morning and evening capsules depending on treatment arm
Experimental: Treatment B; oral EYP001a	Drug: EYP001a; Capsules administered orally. Number of morning and evening capsules depending on treatment arm
Experimental: Treatment C; oral EYP001a	Drug: EYP001a; Capsules administered orally. Number of morning and evening capsules depending on treatment arm
Experimental: Treatment D; oral EYP001a	Drug: EYP001a; Capsules administered orally. Number of morning and evening capsules depending on treatment arm
Placebo Comparator: Treatment E; oral placebo	Drug: Placebo; Placebo capsules for oral administration, identical in appearance to the EYP001a capsules
Active Comparator: Treatment F; oral Entecavir	Drug: Entecavir; Tablets administered orally
Experimental: Treatment G; oral EYP001a plus subcutaneous injection of Peg-INFα2a	Drug: EYP001a; Capsules administered orally. Number of morning and evening capsules depending on treatment arm; Drug: peg-interferon alfa-2a; Ready-to-Use pre-filled syringes for subcutaneous injection
Experimental: Treatment H; oral EYP001a plus subcutaneous injection of Peg-INFα2a	Drug: EYP001a; Capsules administered orally. Number of morning and evening capsules depending on treatment arm; Drug: peg-interferon alfa-2a; Ready-to-Use pre-filled syringes for subcutaneous injection
Placebo Comparator: Treatment I; oral placebo plus subcutaneous injection of Peg-INFα2a	Drug: Placebo; Placebo capsules for oral administration, identical in appearance to the EYP001a capsules; Drug: peg-interferon alfa-2a; Ready-to-Use pre-filled syringes for subcutaneous injection

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Type and frequencies of adverse events	Day 1 through Day 35

Secondary Outcome Measures

Outcome Measure	Time Frame
Maximum plasma concentration (Cmax) of EYP001	Day 1 through Day 35
Time to reach maximum concentration (Tmax) after EYP001 administration	Day 1 through Day 35
Area under the concentration-time curve from time 0 to last measurable concentration (AUC0-6h) of EYP001	Day 1 through Day 35
Bile acid precursor C4 (7αhydroxy-4-cholesten-3-one)	Day 1 through Day 35
Fibroblast growth factor 19 (FGF19)	Day 1 through Day 35

Collaborators and Investigators

• Sponsor: Enyo Pharma
• Collaborators: CPR Pharma Services Pty Ltd, Australia
• Investigators: Principal Investigator: Henk W Reesink, MD, Academic Medical Centre AMC Amsterdam; Principal Investigator: Stephan Riordan, Scientia Clinical Research Limited Sydney

Study record dates

Study Major Dates

• Study Start (Actual): September 21, 2017
• Primary Completion (Actual): July 30, 2018
• Study Completion (Actual): July 30, 2018

Study Registration Dates

• First Submitted: August 31, 2017
• First Submitted That Met QC Criteria: September 1, 2017
• First Posted (Actual): September 5, 2017

Study Record Updates

• Last Update Posted (Actual): August 21, 2018
• Last Update Submitted That Met QC Criteria: August 20, 2018
• Last Verified: August 1, 2018

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Digestive System Diseases; Virus Diseases; Infections; Blood-Borne Infections; Communicable Diseases; Liver Diseases; Hepatitis, Viral, Human; Hepadnaviridae Infections; DNA Virus Infections; Hepatitis, Chronic; Hepatitis; Hepatitis B; Hepatitis B, Chronic; Physiological Effects of Drugs; Anti-Infective Agents; Antiviral Agents; Antineoplastic Agents; Immunologic Factors; Interferons; Interferon-alpha; Peginterferon alfa-2a; Interferon alpha-2; Entecavir
• Other Study ID Numbers: EYP001-103; 2017-002211-33 (EudraCT Number)

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No