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Convalescent Plasma for Treatment of COVID-19: An Exploratory Dose Identifying Study

J

Joakim Dillner

Status and phase

Completed
Phase 2
Phase 1

Conditions

COVID-19

Treatments

Biological: SARS-CoV-2 convalescent plasma

Study type

Interventional

Funder types

Other

Identifiers

Details and patient eligibility

About

Convalescent plasma has been shown to be safe and effective for treatment of several diseases. Preliminary data indicates that it is safe and effective for treatment of COVID. However, data is limited to small studies and case series on severely ill patients.

In a preliminary safety study 10 patients with severe COVID-19, defined as requiring supplementary oxygen, having fever and a duration of illness less than 11 days were treated with 200 ml of CP. CP was given as a slow infusion without obvious adverse events. Eight patients had viremia. One patient rapidly cleared the virus and recovered following CP treatment. CP infusion did not appear to clear viremia in 7/8 patients. Five of these were eventually admitted to ICU. Thus CP did not appear to cause acute toxicity but did not seem to be effective at the dose used. Viremia seemed to be a marker of a high risk of disease progression The proposed study thus aims to treat a high risk population identified by having viremia irrespective of but hopefully before they develop pulmonary injury such that they require supplementary oxygen therapy. Moreover the dose of plasma will be increased incrementally with the aim of clearing viremia as our initial study indicates that continued viremia is driving COVID-19.

Enrollment

10 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Age 18 or older
  • Admitted to a study hospital
  • Active COVID-19 defined as symptoms + SARS CoV-2 identified from upper or lower airway samples
  • Negative pregnancy test taken before inclusion and use of an acceptable effective method of contraception until treatment discontinuation if the participant is a woman of childbearing potential
  • Written informed consent after meeting with a study physician and ability and willingness to complete follow up

Exclusion criteria

  • No matching plasma donor (Exact matching in both the ABO system is required)
  • Unavailability of plasma
  • Significant growth of alternative lower airway pathogen such as Streptococcus pneumoniae or Haemophilus influenzae in sputum
  • Estimated glomerular filtration rate <60 (kidney failure stage III or more)
  • Pregnancy (urinary-hcg)
  • Breast feeding
  • History of severe allergic reactions to foods or other substances that the donor may have been exposed to (for example severe peanut allergy)
  • Inability to give informed consent

Trial design

Primary purpose

Treatment

Allocation

N/A

Interventional model

Single Group Assignment

Masking

None (Open label)

10 participants in 1 patient group

Convalescent plasma treatment
Experimental group
Description:
Participants will receive 200 ml convalescent plasma daily until SARS-CoV-2 is no longer detectable in the blood up to a maximum of 7 CP infusions. CP will be given as a slow infusion over 1 hour. Patients will be monitored for adverse events, especially allergic reactions.
Treatment:
Biological: SARS-CoV-2 convalescent plasma

Trial contacts and locations

2

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Data sourced from clinicaltrials.gov

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