Study to Evaluate the Safety, Tolerability, and Efficacy of BGE-175 in Hospitalized Adults With Coronavirus Disease 2019 (COVID-19) That Are Not in Respiratory Failure

Inclusion Criteria:

- Ability to voluntarily provide informed consent that is documented per local
requirements

- An understanding, ability, and willingness to fully comply with study procedures and
restrictions

- Hospitalized subjects with a confirmed SARS-CoV-2 infection

- Laboratory (polymerase chain reaction [PCR]) confirmed infection with SARS-CoV-2

- Age ≥ 50 years

- COVID-19 illness of any duration, and oxygen saturation measurements ≤ 94% over 5
minutes on room air (Note: low flow oxygen is permitted, but room air oxygen
saturation must be ≤ 94%)

- Not in respiratory failure as defined by at least one of the following:

1. Respiratory failure defined by requiring at least one of the following:

- Endotracheal intubation and mechanical ventilation

- Oxygen delivered by high-flow nasal cannula at flow rates > 20 L/min with
fraction of delivered oxygen ≥ 0.5)

- NIPPV

- ECMO

- Clinical diagnosis of respiratory failure (i.e., need for one of the
preceding therapies, but preceding therapies are not being administered
because it is unavailable in the current setting)

2. Hemodynamic compromise (defined by systolic blood pressure < 90 mm Hg, or
diastolic blood pressure < 60 mm Hg) or requiring vasopressors

3. Multi-organ dysfunction/failure

- Females subjects of childbearing potential must have a negative pregnancy test at
screening or pre-treatment on Day 1

- Male and female subjects of childbearing potential must agree to use methods of
contraception that are consistent with local regulations for those participating in
clinical studies

Exclusion Criteria:

- Participation in any other randomized, controlled clinical trial of an experimental
treatment for COVID-19 (uncontrolled, compassionate use trials are allowed)

- In the opinion of the investigator, progression to death is imminent and inevitable
within the next 24 hours, irrespective of the provision of treatments

- Currently participating in a vaccination trial for SARS-CoV-2

- Known positive test for influenza A or influenza B at the time of screening

- Positive for human immunodeficiency virus (HIV) that is not controlled with current
treatment

- Hepatitis B surface antigen, or Hepatitis C positive at the time of screening.
Subjects who are positive for Hepatitis C but have Hepatitis C virus (HCV) RNA below
the limit of quantitation may be enrolled. Subjects with Hepatitis B, but with
undetectable viral load, may be enrolled.

- Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) > 5 × the upper
limit of normal (ULN)

- Stage 4 severe chronic kidney disease (i.e., estimated glomerular filtration rate
[eGFR] < 30 mL/min) or acute renal failure resulting in eGFR < 30 mL/min

- Serious comorbidity, including:

1. Myocardial infarction (within the last month)

2. Moderate or severe heart failure (New York Heart Association [NYHA] class III or
IV)

3. Acute stroke (within the last month)

4. Uncontrolled malignancy. Uncontrolled malignancy would include cancers that are
not considered in remission, or solid tumor or hematological malignancies with
evidence of disease progression in the past 3 months (i.e., there is evidence of
disease progression by Response Evaluation Criteria in Solid Tumours [RECIST] or
equivalent relevant criterion for the type of malignancy), and are not considered
effectively managed with ongoing treatment as determined by the investigator

5. Recent severe thromboembolic disease or evidence of severe thromboembolic disease
defined as a current large vessel thromboembolic event or a thromboembolic event
within the past 3 months (e.g., deep vein thrombosis [DVT], pulmonary embolism,
ischemic stroke, transient ischemic attack) requiring interventional treatment.
This exclusion does not prohibit prophylaxis for thromboembolic events, including
those considered possible with concurrent SARS-CoV-2 infection.

- History of severe allergic or anaphylactic reactions or hypersensitivity to the study
drug

- Consideration by the investigator, for any reason, that the subject is an unsuitable
candidate to receive study treatment