Octagam 10% Therapy in COVID-19 Patients With Severe Disease Progression

Inclusion Criteria:

1. Adult aged ≥18years old

2. Provide voluntary, fully informed written and signed consent before any study-related
procedures are conducted

3. Able to understand and comply with the relevant aspects of the study protocol

4. Laboratory (RT-PCR) confirmed COVID-19 infection on throat swab and/or sputum and/or
lower respiratory tract samples

5. Hospitalized with a resting room-air SpO2 of ≤93% or PaO2/FiO2 ratio <300mmHg.
Measurement can be taken from documented source records in the 24 hours prior to
screening

6. Chest imaging confirming lung involvement

Exclusion Criteria:

1. Existence of other evidence that can explain pneumonia including but not limited to:
Influenza A virus, influenza B virus, bacterial pneumonia (as suggested by the
combined clinical picture, radiological findings and known laboratory results [eg,
elevated procalcitonin >0.5ng/mL and concomitant neutrophilia]), known fungal
pneumonia, suspected fungal pneumonia based on compromised immune system with a
history of past fungal infections, noninfectious causes, etc.

2. Known history of serious allergic reactions, including anaphylaxis, to IVIG or its
preparation components

3. Subjects with a history of thromboembolic event (TEE) within the last 12 months, such
as deep vein thrombosis, pulmonary embolism, myocardial infarction, ischemic stroke,
transient ischemic attack, peripheral artery disease (Fontaine IV)

4. Subjects with an underlying medical condition that can lead to hypercoagulable states
and hyperviscosity such as antithrombin III deficiency, Factor V Leiden, Protein C
deficiency, antiphospholipid syndrome and malignancy

5. Known history of selective IgA deficiency with antibodies against IgA

6. Subjects with conditions such as human immunodeficiency virus (HIV) infection, known
acute or chronic hepatitis B or C (HBsAg positive or HCV ribonucleic acid (RNA) PCR
positive or currently treated with antivirals), pulmonary fibrosis, elevated
procalcitonin (> 0.5) with concomitant neutrophilia (elevated polys), heparin induced
thrombocytopenia (HIT), and moderate to severe renal dysfunction (per investigator
discretion based on estimated glomerular filtration rate [eGFR] <59 mL/min/1.73 m2, as
defined by KDIGO Clinical Practice Guideline):

- Moderately reduced GFR (G3a): GFR = 45 to 59 ml/min/1.73 m2

- Moderately reduced GFR (G3b): GFR = 30 to 44 ml/min/1.73 m2

- Severely reduced GFR (G4): GFR = 15 to 29 ml/min/1.73 m2

- Kidney failure (G5): GFR <15 ml/min/1.73 m2

7. Currently requiring IMV (invasive mechanical ventilation or having received IMV during
the last 30 days

8. Known clinically significant preexisting lung, heart, or neuromuscular disease that,
in the investigator's opinion, would impact subject's ability to complete study or may
confound the study results

9. Body weight >125 kg

10. Women who are pregnant or breast-feeding

11. Subjects who received COVID-19 convalescent plasma, IVIG products, anti-interleukin
agents (eg, Tocilizumab), or interferons for their COVID-19 disease before enrollment
or plan to receive this treatment during the course of the study

12. Enrolled in other experimental interventional studies or taking experimental
medications (ie, convalescent plasma). Diagnostic studies can be allowed if the
anticipated total blood volume to be drawn across both studies and for therapeutic
purposes does not exceed 450 mL over any 8-week period.