ARM 3 1. Age equal to or greater than 18 years of age. 2. Any haematological or solid tumour 3. Current or within the last 12 months received cancer related treatment such as chemotherapy, radiotherapy or targeted small molecule, cellular therapy or immune-modulating therapy 4. Signed written and verbal informed consent 5. Laboratory confirmation of SARS-CoV-2 by PCR as per local laboratory assays 6. Hospitalised 7. Symptoms of COVID-19 such as: a. Fever equal to or greater than 38 degrees Celsius OR b. Tachypnoea respiratory rate equal to or greater than 20 breaths/min OR c. Pulse Oxygen saturation (SpO2) equal to or less than 94% 8. Concurrent standard of care antimicrobials, antivirals are allowed. 9. Female and male patients of child bearing potential will use highly effective contraception. In female child bearing potential participants a negative urine pregnancy test will be required.

ARM 3 1. Age equal to or greater than 18 years of age. 2. Any haematological or solid tumour 3. Current or within the last 12 months received cancer related treatment such as chemotherapy, radiotherapy or targeted small molecule, cellular therapy or immune-modulating therapy 4. Signed written and verbal informed consent 5. Laboratory confirmation of SARS-CoV-2 by PCR as per local laboratory assays 6. Hospitalised 7. Symptoms of COVID-19 such as: a. Fever equal to or greater than 38 degrees Celsius OR b. Tachypnoea respiratory rate equal to or greater than 20 breaths/min OR c. Pulse Oxygen saturation (SpO2) equal to or less than 94% 8. Concurrent standard of care antimicrobials, antivirals are allowed. 9. Female and male patients of child bearing potential will use highly effective contraception. In female child bearing potential participants a negative urine pregnancy test will be required.