Convalescent Antibodies Infusion in Critically Ill COVID 19 Patients

Coronavirus Infection Clinical Trial

Official title:

A Pilot Study to Explore the Efficacy and Safety of Rescue Theraphy With Antibodies From Convalescent Patients Obtained With Double -Filtration Plasmapheresis (DFPP) and Infused in Critically Ill Ventilated Patients With Coronavirus Disease 2019 (COVID-19)

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT04346589
• Other study ID #: DFPP COVID 19
• Status: Terminated
• Phase: N/A
• Start date: April 15, 2020
• Est. completion date: October 27, 2022

Study information

• Verified date: March 2023
• Source: A.O. Ospedale Papa Giovanni XXIII
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The 2019 outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 or COVID 19), which originated in Wuhan, China, has become a major concern all over the world.

Convalescent plasma or immunoglobulins have been used as a last resort to improve the survival rate of patients with SARS whose condition continued to deteriorate despite any attempted treatment.. Moreover, several studies showed a shorter hospital stay and lower mortality in patients treated with convalescent plasma than those who were not treated with convalescent plasma. Evidence shows that convalescent plasma from patients who have recovered from viral infections can be used effectively as a treatment of patients with active disease.

The use of solutions enriched of antiviral antibodies has several important advantages over the convalescent plasma including the high level of neutralizing antibodies supplied. Plasma-exchange is expensive and requires large volumes of substitution fluid. Albumin is better tolerated and less expensive, but exchanges using albumin solutions increase the risk of bleeding because of progressive coagulation factor depletion. With either albumin or fresh frozen plasma, increasing the risk of cardiovascular instability in the plasma donor and in the recipient, which can be detrimental in a critically ill patient with COVID 19 pneumonia.

The aforementioned limitations of plasma therapy can be overcome by using selective apheresis methods, such as double-filtration plasmapheresis (DFPP).DFPP is a modality of plasma purification that performs an initial plasma separation from blood, and the subsequent separation of specific molecules, on the basis of their specific molecular weight (cut-off), by using a fractionation filter. The Fractionation Filter 2A20, because of its membrane sieving cut-off, retains larger molecules and returns plasma along with smaller molecules to the circulation, including the major part of the albumin. The selection of the membrane 2A20 is related to the appropriate Sieving Coefficient for IgG that allows to efficiently collect antibodies from patients which are recovered from COVID-19, with negligible fluid losses and limited removal of albumin. The total amount of antibodies obtained during one DFPP session exceeds by three to four times the total amount provided to recipients with one unit of plasma obtained during one plasma-exchange session from one COVID-19 convalescent donor. This should result in more effective viral inhibition and larger benefit for the patient achieved with one unit of enriched immunoglobulin solution obtained with DFPP than with one unit of plasma obtained with plasma exchange.

These observations provide the background for a pilot study aimed to explore whether the infusion of antibodies obtained with one single DFPP procedure from voluntary convalescent donors could offer an effective and safe therapeutic option for critically ill patients with severe coronavirus (COVID-19) pneumonia requiring mechanical ventilation.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 9
• Est. completion date: October 27, 2022
• Est. primary completion date: February 17, 2021
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

Plasma Ig Donors

• Adult (>18 and <65-yr-old) men and women

• Convalescent donor who recovered from COVID 19 from at least 14 days according to the clinical and laboratory criteria defined by the Consiglio Superiore di Sanità on February 20, 2019 ("The recovered patient is the one who resolves the symptoms of COVID-19 infection and who is negative in two consecutive tests for the search for SARS-Cov-2, performed 24 hours apart") with the exceptions mentioned in the attached derogation (that is "no upper age limit to donation provided there are no clinical contraindications to the procedure and independent of documented evidence of two negative tests for SARS-Cov 2 naso-faringeal contamination")

• Male or female donor; if female only if nulliparous; in both cases with a negative history of blood component transfusions

• Careful clinical evaluation of the patient-donor with particular reference to the criteria established by current legislation to protect the health of the donor who donates by apheresis

• Presence of adequate levels of neutralizing anti-SARS-COV-2 antibodies;

• Biological qualification test negative defined by current indications (performed at SIMT of HPG23)

• Test negative for: HAV RNA, HEV RNA, PVB19 DNA (performed at HPG23)

• Informed consent

Recipients

• Adult (>18-yr-old) men and women

• COVID-19 pneumonia diagnosed by standard criteria

• Need of ventilator support

• Informed consent for participation in the study (critically ill patients will be unable to provide consent. Consent will be oral if a written consent will be impossible. If the subject is incapable of giving an informed consent and an authorized representative is not available without a delay that would, in the opinion of the Investigator, compromise the potential life-saving effect of the treatment this can be administered without consent. Consent to remain in the research should be sought as soon as the conditions of the patient will allow it).

• <48 hours of mechanical ventilation

Exclusion Criteria:

• >48 hour mechanical ventilation

• Patient being treated with other anti-COVID-19 experimental treatments

Related Conditions & MeSH terms

• Coronavirus Infection
• Coronavirus Infections
• COVID-19
• Pneumonia
• Pneumonia, Ventilator-Associated

Intervention

Biological:
• Anti-coronavirus antibodies (immunoglobulins)obtained with DFPP from convalescent patients
Antibodies obtained from consenting convalescent donors will be administered to ten consecutive patients who fulfill the inclusion criteria . Convalescent antibodies will be obtained with one DFPP procedure from consenting donors and infused in one critically ill, ventilated patient with COVID 19 pneumonia.

Locations

Country	Name	City	State
Italy	ASST HPG23 - Unit of Nephrology	Bergamo
Italy	ASST Papa Giovanni XXIII - Microbiology and Virology Unit	Bergamo
Italy	Asst Pg23 - S.I.M.T	Bergamo
Italy	ASST-PG23 - Intensive Care Unit	Bergamo
Italy	IRFMN - Clinical Research Center for Rare Diseases	Ranica	BG

Sponsors (2)

Lead Sponsor	Collaborator
A.O. Ospedale Papa Giovanni XXIII	Aferetica - Italy (BO)

Country where clinical trial is conducted

Italy, 

References & Publications (1)

Curto D, Tomatis F, Gastoldi S, Galbusera M, Noris M, Raimondi F, Lorini FL, Falanga A, Marchetti M, Remuzzi G, Ruggenenti P. Case Report: Effects of Anti-SARS-CoV-2 Convalescent Antibodies Obtained With Double Filtration Plasmapheresis. Front Immunol. 20 — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of mechanical ventilation days.		Through study completion, an average of 6 months.
Secondary	Survival		Through study completion, an average of 6 months.
Secondary	Shift to Continuous Positive Airway Pressure (CPAP) ventilation		Through study completion, an average of 6 months.
Secondary	Referral to a sub-intensive care unit or discharge		Through study completion, an average of 6 months.
Secondary	Viral titer		Changes from before Ig administration, one day and one week after Ig administration and every week after discharge from the intensive care unit through study completion, an average of 6 months.
Secondary	Anti COVID 19 IgG antibodies		Changes from before Ig administration, one day and one week after Ig administration and every week after discharge from the intensive care unit through study completion, an average of 6 months.
Secondary	Anti COVID 19 IgM antibodies		Changes from before Ig administration, one day and one week after Ig administration and every week after discharge from the intensive care unit through study completion, an average of 6 months.
Secondary	C5a concentration	Marker of complement activation in plasma.	Changes from before Ig administration, one day and one week after Ig administration and every week after discharge from the intensive care unit through study completion, an average of 6 months.
Secondary	C3a concentration	Marker of complement activation in plasma.	Changes from before Ig administration, one day and one week after Ig administration and every week after discharge from the intensive care unit through study completion, an average of 6 months.
Secondary	Serum C5b-9 concentration	Marker of complement activation in plasma.	Changes from before Ig administration, one day and one week after Ig administration and every week after discharge from the intensive care unit through study completion, an average of 6 months.