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A Phase 1 Double-Blinded Study for Safety, Tolerability, Pharmacokinetics, and Antiviral Activity of ATI-2173 in Healthy Subjects and Subjects With Chronic Hepatitis B Virus Infection

Phase 1
Completed
Conditions
Hepatitis B, Chronic
Interventions
Drug: ATI-2173 Placebo
Registration Number
NCT04248426
Lead Sponsor
Antios Therapeutics, Inc
Brief Summary

This is a double-blinded, randomized, placebo-controlled study of safety, tolerability, pharmacokinetics, and antiviral activity in both healthy volunteers and volunteers with chronic hepatitis B virus infection. Healthy volunteers will be administered either a single oral dose or multiple oral doses of ATI-2173 and assessed for safety and tolerability including blood tests to show how the body metabolizes and eliminates the investigational drug. Volunteers with a diagnosis of chronic hepatitis B virus infection will be administered multiple oral doses of ATI-2173 and assessed for safety and tolerability including blood tests to show how the body metabolizes and eliminates the investigational drug as well as how the drug effects the virus infection.

Detailed Description

Not available

Recruitment & Eligibility

Status
COMPLETED
Sex
All
Target Recruitment
88
Inclusion Criteria

All subjects:

  1. Provision of signed and dated informed consent form (ICF)

  2. Stated willingness to comply with all study procedures and availability for the duration of the study

  3. If female, meets 1 of the following criteria:

    1. Is of childbearing potential and agrees to use an accepted contraceptive method. Acceptable method of contraception include:

      • Abstinence from heterosexual intercourse from at least 28 days prior to the first study drug administration through to at least 30 days after the last dose of the study drug or until completion of the study, whichever is longer
      • Male partner vasectomized at least 6 months prior to the first study drug administration
      • Use a systemic contraceptive or an intrauterine device (with or without hormones), from at least 28 days prior to the first study drug administration through to at least 30 days after the last dose of the study drug or until completion of the study, whichever is longer, with a male condom or a diaphragm/cervical cap plus spermicide, from the first study drug administration through to at least 30 days after the last dose of the study drug or until completion of the study, whichever is longer Or
    2. Male partner has had a vasectomy less than 6 months prior to dosing, and agrees to use an additional acceptable contraceptive method from the first study drug administration through to at least 30 days after the last dose of the study drug or until completion of the study, whichever is longer Or

    3. Is of non-childbearing potential, defined as surgically sterile (i.e. has undergone complete hysterectomy, bilateral oophorectomy, or tubal ligation) or is in a postmenopausal state (i.e. at least 1 year without menses without an alternative medical condition prior to the first study drug administration and follicle-stimulating hormone levels ≥ 40 mIU/mL at screening)

  4. If male, meets 1 of the following criteria:

    1. Is able to procreate and agrees to use 1 of the accepted contraceptive regimens and not to donate sperm from the first study drug administration to at least 90 days after the last drug administration. An acceptable method of contraception includes 1 of the following:

      • Abstinence from heterosexual intercourse
      • Male condom with spermicide or male condom with a vaginal spermicide (gel, foam, or suppository) or
    2. Is unable to procreate; defined as surgically sterile (i.e. has undergone a vasectomy at least 180 days prior to the first study drug administration)

  5. Light-, non- or ex-smoker (A light-smoker is defined as someone using 10.0 nicotine units or less per day for at least 90 days prior to the first study drug administration. An ex smoker is defined as someone who completely stopped using nicotine products for at least 180 days prior to the first study drug administration)

  6. Clinical laboratory values within the laboratory's stated normal range; if not within this range, they must be without clinical significance, as determined by an investigator

  7. Have no clinically significant diseases captured in the medical history or evidence of clinically significant findings on the physical examination (including vital signs) and/or ECG, as determined by an investigator

    Healthy subjects (Phase 1a):

  8. Male or female, aged at least 18 years but not older than 55 years

  9. Body mass index (BMI) within 18.0 kg/m2 to 32.0 kg/m2, inclusive

    HBV-infected subjects (Phase 1b):

  10. Male or female, aged at least 18 years but not older than 65 years

  11. BMI within 18.0 kg/m2 to 35.0 kg/m2, inclusive

  12. Serum HBsAg positive at screening and at least 6 months prior to screening

  13. Serum HBeAg positive and HBV DNA ≥ 20,000 IU/mL, or serum HBeAg negative and HBV DNA ≥ 2,000 IU /mL at screening

  14. ALT and AST <5 times the upper limit of normal (ULN) at screening and prior to the first study drug administration

Exclusion Criteria

All subjects:

  1. Female who is lactating at screening

  2. Female who is pregnant according to the pregnancy test at screening or prior to the first study drug administration

  3. History of significant hypersensitivity to clevudine or any related products (including excipients of the formulations) as well as severe hypersensitivity reactions (like angioedema) to any drugs

  4. History of significant cardiovascular, pulmonary, hematologic, neurological, psychiatric, endocrine, immunologic or dermatologic disease

  5. Presence of clinically significant muscle disorders, myopathies or other forms of liver disease

  6. Presence of clinically significant ECG abnormalities at the screening visit, as defined by medical judgment

  7. Positive test result for alcohol and/or drugs of abuse at screening or prior to the first drug administration

  8. Any history of tuberculosis

  9. Inclusion in a previous cohort for this clinical study

  10. Intake of an Investigational Product (IP) in the 28 days prior to the first study drug administration

  11. Active illicit drug use including, but not limited to, cocaine, heroin and methamphetamine (the use of cannabinoid is acceptable)

  12. Donation of 50 mL or more of blood in the 28 days prior to the first study drug administration

  13. Donation of 500 mL or more of blood in the 56 days prior to the first study drug administration

    Healthy subjects (Phase 1a):

  14. Maintenance therapy with any drug or significant history of drug dependency or alcohol abuse (> 3 units of alcohol per day, intake of excessive alcohol, acute or chronic)

  15. Any clinically significant illness in the 28 days prior to the first study drug administration

  16. Presence or history of clinically significant gastrointestinal, liver or kidney disease, or surgery that may affect drug bioavailability

  17. Positive screening results to HIV Ag/Ab combo, hepatitis B surface antigen or hepatitis C virus tests

  18. Use of any prescription drugs including amiodarone (with the exception of hormone replacement therapy) in the 28 days prior to the first study drug administration, that in the opinion of an investigator would put into question the status of the participant as healthy

    HBV-infected subjects (Phase 1b):

  19. Significant history of drug dependency or alcohol abuse (> 3 units of alcohol per day, intake of excessive alcohol, acute or chronic)

  20. Use of amiodarone in the 28 days prior to the first study drug administration

  21. Presence or history of clinically significant gastrointestinal or kidney disease, or surgery that may affect drug bioavailability

  22. Cirrhosis of the liver as determined by one of the following:

    • A score greater than F2 for liver fibrosis by FibroScan or FibroSure test within 6 months prior to screening or at the time of screening OR
    • A score greater than F2 on liver biopsy within 12 months prior to screening or at the time of screening
  23. Medical history or known presence of hepatocellular carcinoma

  24. Previous treatment for hepatitis B virus, including nucleoside therapy

  25. Acute infection or any other clinically significant illness within 14 days of randomization

  26. History of organ transplantation

  27. Uncontrolled hypertension

  28. Positive screening results to HIV Ag/Ab combo, hepatitis C virus or hepatitis D virus tests

Study & Design

Study Type
INTERVENTIONAL
Study Design
SEQUENTIAL
Arm && Interventions
GroupInterventionDescription
ATI-2173 PlaceboATI-2173 Placebo-
ATI-2173ATI-2173-
Primary Outcome Measures
NameTimeMethod
The percentage of subjects who experienced at least one treatment emergent serious AE (SAE).Through study completion, an average of 1 year
Percentage of subjects who experienced at least one treatment emergent Grade 1, 2, 3, 4 or 5 laboratory abnormalityThrough study completion, an average of 1 year
Percentage of subjects who experienced a treatment-emergent dose limiting toxicity (DLT)Through study completion, an average of 1 year
The percentage of subjects who experienced at least 1 treatment-emergent adverse event (TEAE)Through study completion, an average of 1 year
Percentage of subjects who discontinued study drug due to a TEAEThrough study completion, an average of 1 year
Secondary Outcome Measures
NameTimeMethod
Peak plasma concentration (Cmax) of ATI-2173 and clevudine in Multiple Dose Healthy VolunteersDay 1 & Day 14: Pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours. Day 14 only: post-dose at 48, 72, 144, 216, and 312 hours
Peak plasma concentration (Cmax) of ATI-2173 and clevudine in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours
Terminal elimination half-life (t1/2) of ATI-2173 in plasma in Single Dose Healthy VolunteersPre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours
Minimum observed plasma concentration (Cmin) of ATI-2173 and clevudine in a dosing interval in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours
Peak plasma concentration (Cmax) of ATI-2173 and clevudine in Single Dose Healthy VolunteersPre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours
Food effect on Peak plasma concentration (Cmax) of ATI-2173 and clevudine in Single Dose Healthy VolunteersPre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours
Area under the concentration time curve from time 0 (dose administration) to 24 hours (AUC0-24) in ATI-2173 and clevudine in Multiple Dose Healthy VolunteersDay 1 & Day 14: Pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours. Day 14 only: post-dose at 48, 72, 144, 216, and 312 hours
Cumulative amount of drug excreted in urine over all time intervals (Ae) in Single Dose Healthy VolunteersPre-dose, post-dose at 0-4, 4-8, 8-12, 12-24, 24-48, 48-72, 72-96, and 96-120 hours
Time of maximum observed plasma concentration (Tmax) of ATI-2173 and clevudine in Single Dose Healthy VolunteersPre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours
Food Effect on Time of maximum observed plasma concentration (Tmax) of ATI-2173 and clevudine in Single Dose Healthy VolunteersPre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours
Area under plasma concentration time curve (AUC) of ATI-2173 and clevudine in Single Dose Healthy VolunteersPre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours
Area under the concentration time curve from time 0 (dose administration) to 24 hours (AUC0-24) in ATI-2173 and clevudine in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours
Terminal elimination half-life (t1/2) of ATI-2173 in plasma in Multiple Dose Healthy VolunteersDay 1 & Day 14: Pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours. Day 14 only: post-dose at 48, 72, 144, 216, and 312 hours
Terminal elimination half-life (t1/2) of ATI-2173 in plasma in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours
Food Effect on Area under the concentration time curve (AUC0-t) from time 0 (dose administration) to the time of last quantifiable concentration (TLQC) of ATI-2173 and clevudinePre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours
Food Effect on Area under the concentration time curve (AUC0-inf) extrapolated to infinity, calculated as AUC0-t + CLQC/λZ, where CLQC is the measured concentration at time TLQC in ATI-2173 and clevudinePre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours
Trough Peak plasma concentration (Ctrough) of ATI-2173 and clevudine in Multiple Dose HBV Infected PatientsPre-dose on days 3, 5, 7, 10, 14 and 21
Cumulative amount of drug excreted in urine over all time intervals (Ae) in Multiple Dose Healthy VolunteersPre-dose on Day 1, post-dose on Days 1 & 14 at 0-4, 4-8, 8-12, 12-24 hours
Maximum observed HBV DNA change (reduction) from baseline through Day 28 (Emax) in Multiple Dose HBV Infected PatientsScreening, Day -1, 7, 14, 21, 28
Cumulative amount of drug excreted in urine over all time intervals (Ae) in Multiple Dose HBV Infected PatientsPre-dose on Day 1, post-dose on Days 1 & 28 at 0-4, 4-8 and 8-24 hours
Time of maximum observed plasma concentration (Tmax) of ATI-2173 and clevudine in Multiple Dose Healthy VolunteersDay 1 & Day 14: Pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours. Day 14 only: post-dose at 48, 72, 144, 216, and 312 hours
Time of maximum observed plasma concentration (Tmax) of ATI-2173 and clevudine in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours
Trough Peak plasma concentration (Ctrough) of ATI-2173 and clevudine in Multiple Dose Healthy VolunteersPre-dose on days 3, 5, 7, 10, and 13.
Minimum observed plasma concentration (Cmin) of ATI-2173 and clevudine in a dosing interval in Multiple Dose Healthy VolunteersDay 1 & Day 14: Pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours. Day 14 only: post-dose at 48, 72, 144, 216, and 312 hours
Apparent metabolic clearance (mCLr) of clevudine in urine in Multiple Dose HBV Infected PatientsPre-dose on Day 1, post-dose on Days 1 & 28 at 0-4, 4-8 and 8-24 hours
Accumulation ratio of ATI-2173 and clevudine in plasma (RAC) evaluated by comparing Day 14 (Ph1a) Cmax to Day 1 Cmax in Multiple Dose Healthy VolunteersDay 1 & Day 14: Pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours. Day 14 only: post-dose at 48, 72, 144, 216, and 312 hours
Accumulation ratio of ATI-2173 and clevudine in plasma (RAC) evaluated by comparing Day 28 (Ph1b) Cmax to Day 1 Cmax in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours
Time (day) of maximum observed effect through Day 28 (TEmax) in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24 hours
ALT/AST Concentration versus Time in Multiple Dose HBV Infected PatientsScreening, Day -1, 1, 3, 7, 10, 14, 21, 28, 34, 37, 41, and 55
Apparent metabolic clearance (mCLr) of clevudine in urine in Single Dose Healthy VolunteersPre-dose, post-dose at 0-4, 4-8, 8-12, 12-24, 24-48, 48-72, 72-96, and 96-120 hours
Apparent metabolic clearance (mCLr) of clevudine in urine in Multiple Dose Healthy VolunteersPre-dose on Day 1, post-dose on Days 1 & 14 at 0-4, 4-8, 8-12, 12-24 hours
Accumulation ratio of ATI-2173 and clevudine in plasma (RAC) evaluated by comparing Day 14 (Ph1a) AUCtau to Day 1 AUC0-24 in Multiple Dose Healthy VolunteersDay 1 & Day 14: Pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours. Day 14 only: post-dose at 48, 72, 144, 216, and 312 hours
Area under the effect concentration time curve from time 0 (first dose administration) to end of study (24 weeks post last dose) that is above baseline (AUEC) in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours
Area under the effect concentration time curve from time 0 (first dose administration) to Day 28 that is below baseline (AUEC) in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24 hours
Accumulation ratio of ATI-2173 and clevudine in plasma (RAC) evaluated by comparing Day 28 (Ph1b) AUCtau to Day 1 AUC0-24 in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours
Resistance Mutations in Multiple Dose HBV Infected PatientsDay -1, Day 1, Day 7, Day 14, Day 21, Day 28, Day 31, Day 37, Day 55, Day 111, Day 195

To assess the emergence of resistance mutations in HBV-infected subjects. The frequency of targeted mutations may be calculated in each subject.

Area under the effect concentration time curve from time 0 (first dose administration) to Day 28 that is above baseline (AUEC) in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24 hours
Maximum observed HBV DNA change (reduction) from baseline through end of study (Emax) in Multiple Dose HBV Infected PatientsScreening, Day -1, 7, 14, 21, 28, 31, 37, 55, 111, and 195
Area under the effect concentration time curve from time 0 (first dose administration) to Day 28 (AUEC) in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24 hours
Time (day) of maximum observed effect through end of study (TEmax) in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24 hours
Area under the effect concentration time curve from time 0 (first dose administration) to end of study (24 weeks post last dose) that is below baseline (AUEC) in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours
Area under the effect concentration time curve from time 0 (first dose administration) to end of study (24 weeks post last dose) (AUEC) in Multiple Dose HBV Infected PatientsDay 1: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours; Day 28: pre-dose, post-dose at 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 144, 216 and 312 hours

Trial Locations

Locations (3)

Medical Center of Limited Liability Company "Harmoniya krasy" Department of Clinical Trials

🇺🇦

Kyiv, Ukraine

Republican Clinical Hospital "Timofei Mosneaga" Arensia EM Unit

🇲🇩

Chisinau, Republic Of Moldova, Moldova, Republic of

Altasciences

🇨🇦

Montréal, Quebec, Canada

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