Inclusion Criteria:
1. Must have given written informed consent before any study-related activities are
carried out and must be able to understand the full nature and purpose of the study,
including possible risks and adverse effects.
2. Adult males and females, 18 to 55 years of age (inclusive) at screening.
3. Body mass index ≥ 18.0 and ≤ 30.0 kg/m2 with a body weight ≥ 45 kg at screening.
4. Be non-smokers (including tobacco, e-cigarettes, and marijuana) for at least 3 months
prior to first study drug administration and have a negative breath test for cotinine
at the Screening Visit and at check-in on Day -1.
5. Medically healthy without clinically significant abnormalities (in the opinion of the
Investigator) at the Screening Visit and prior to dosing including:
1. Physical examination without any clinically significant findings. 2. Systolic blood pressure in the range of 90 to 160 mmHg (inclusive) and diastolic
blood pressure in the range of 50 to 95 mmHg (inclusive) after 5 minutes rest in
supine position. 3. Heart rate (HR) in the range of 40 to 100 bpm (inclusive) after 5 minutes rest in
supine position. 4. Body temperature (tympanic or oral) in the range of 35.5°C to 37.7°C (inclusive)
5. No clinically significant findings in serum chemistry, haematology, coagulation,
and urinalysis tests. 6. Triplicate 12-lead ECGs (taken after the volunteer has been supine for at least 5
minutes) with QT intervals corrected using Fridericia's method (QTcF) ≤ 450 msec
for males and ≤ 470 msec for females and no clinically significant abnormalities. 6. Female volunteers must:
1. Be of nonchildbearing potential, i.e., surgically sterilised (hysterectomy,
bilateral salpingectomy, bilateral oophorectomy at least 6 weeks before
screening) or postmenopausal (defined as no menses for 12 months without an
alternative medical cause and a follicle-stimulating hormone [FSH] level > 40
IU/L at the Screening Visit) OR. 2. If of childbearing potential, must agree not to donate ova, not to attempt to
become pregnant, and, if engaging in sexual intercourse with a male partner, must
agree to use an acceptable method of contraception (Section 8.3.2) from the time
of signing the participant informed consent form (PICF) until at least 30 days
after the last dose of the study drug. 7. Male volunteers must agree not to donate sperm, and, if engaging in sexual intercourse
with a female partner who could become pregnant, must agree to use an acceptable
method of contraception (Section 8.3.2) from the time of signing the consent form
until at least 65 days after the last dose of study drug.
8. Have suitable venous access for blood sampling.
9. Be willing and able to comply with all study assessments and adhere to the protocol
schedule and restrictions.
Exclusion Criteria:
1. History or presence of any clinically significant (as determined by the PI)
cardiovascular, pulmonary, hepatic, renal, haematological, gastrointestinal,
endocrine, immunologic, dermatologic, or neurological disease, including any acute
illness or major surgery, within the past 3 months.
2. Current infection that requires systemically absorbed antibiotic, antifungal,
antiparasitic, or antiviral medications.
3. Any history of malignant disease in the last 5 years (excluding surgically resected
skin squamous cell or basal cell carcinoma).
4. Presence of clinically relevant immunosuppression from, but not limited to,
immunodeficiency conditions such as common variable hypogammaglobulinemia.
5. Use of or plans to use systemic immunosuppressive (e.g., corticosteroids,
methotrexate, azathioprine, cyclosporine) or immunomodulating medications (e.g.,
interferon) during the study or within 3 months prior to the first study drug
administration.
6. History of risk factors for torsade de pointes (including a family history of long QT
syndrome or sudden cardiac death) or a known arrythmia.
7. Liver function test (LFT) results > 1.5 times the upper limit of normal (ULN) for
gamma glutamyl transferase (GGT), bilirubin (total, conjugated, and unconjugated),
alkaline phosphatase (ALP), aspartate aminotransferase (AST), or alanine
aminotransferase (ALT). Volunteers with bilirubin, ALP and/or ALT/AST above the limits
specified may be included, at the discretion of the Investigator, if the levels are
unaccompanied by clinical signs.
8. Positive test results for human immunodeficiency virus (HIV-1 or HIV-2) antibodies,
hepatitis C virus (HCV) antibodies, or hepatitis B surface antigen (HBsAg) at the
Screening Visit.
9. Positive test result for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
via polymerase chain reaction or commercially validated antigen test (taken if
clinically indicated on Day -2).
10. Presence of sequelae of gastrointestinal, liver, kidney, or other conditions known to
interfere with the absorption, distribution, metabolism, or excretion of drugs.
11. Estimated creatinine clearance (CrCl) < 60 mL/min using the Cockcroft-Gault formula or
serum creatinine more than 1.5 x ULN.
12. History of substance abuse or alcohol abuse (defined as more than 10 standard drinks
per week or regularly consuming more than 4 standard drinks per day where 1 standard
drink is 10 g of pure alcohol and equivalent to 285 mL beer [4.9% Alc./Vol], 100 mL
wine [12% Alc./Vol], or 30 mL spirit [40% Alc./Vol]) within 12 months prior to the
Screening Visit.
13. Positive drugs of abuse or alcohol breath test results at the Screening Visit or at
CRU check in (Day -1).
14. Use of any prescription or over-the-counter (OTC) medication (including herbal
products, diet aids, and hormone supplements) within 10 days or 5 half-lives of the
medication (whichever is longer) prior to the first study drug administration,
excepting use of contraceptives and occasional use of paracetamol (up to 1 g every 8
hours or 3 g per day maximum for no more than 3 consecutive days).
15. Demonstrated clinically significant (required intervention, e.g., emergency room
visit, epinephrine administration) allergic reactions (e.g., food, drug, or atopic
reactions, asthmatic episodes) which, in the opinion of the Investigator, would
interfere with the volunteer's ability to participate in the study.
16. Known hypersensitivity to any of the study drug ingredients.
17. Use of any vaccinations within 10 days prior to first study drug administration.
18. For women of childbearing potential, a positive serum pregnancy test at the Screening
Visit or a positive urine pregnancy test (with confirmatory positive serum pregnancy
test) at CRU check-in (Day -1).
19. Breastfeeding.
20. Donation of blood or plasma or loss of whole blood of more than 500 mL within 30 days
prior to first study drug administration or receipt of a blood transfusion within 2
months prior to first study drug administration.
21. Participation in another clinical study of an investigational drug within 30 days or 5
half-lives of the investigational agent (whichever is longer) prior to the first study
drug administration.
22. Any other condition or prior therapy that in the opinion of the Investigator would
make the volunteer unsuitable for this study, including inability to cooperate fully
with the requirements of the study protocol or likelihood of noncompliance with any
study requirements
