A Phase II Randomized, Double-blind, Placebo-controlled Study to Evaluate the Safety and Efficacy of Exosomes Overexpressing CD24 to Prevent Clinical Deterioration in Patients With Moderate or Severe COVID-19 Infection

COVID-19 Disease Clinical Trial

Official title:

A Phase II Randomized, Double-blind, Placebo-controlled Study to Evaluate the Safety and Efficacy of Exosomes Overexpressing CD24 to Prevent Clinical Deterioration in Patients With Moderate or Severe COVID-19 Infection

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT04969172
• Other study ID #: 0206-21-TLV
• Status: Active, not recruiting
• Phase: Phase 2
• Start date: July 11, 2021
• Est. completion date: July 11, 2022

Study information

• Verified date: July 2021
• Source: Tel-Aviv Sourasky Medical Center
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

A Phase II Randomized, double-blind, Placebo-controlled Study to Evaluate the safety and efficacy of exosomes overexpressing CD24 to prevent clinical deterioration .The study population will include patients with moderate or severe COVID-19 infection and laboratory markers predictive of the cytokine storm from the Corona department of each site, who have provided an informed consent.

155 patients will be randomized in a 2:1 ratio to receive either 1010 exosome particles (103 patients) or placebo (52 patients).The exosomes will be diluted in 4ml normal saline for inhalation, administered once daily (QD) for 5 days.

Placebo (saline) will be prepared for inhalation and administered in the same manner as the exosomes.

Description:

The exosomes will be diluted in 4ml normal saline for inhalation, administered once daily (QD) for 5 days.

Placebo (saline) will be prepared for inhalation and administered in the same manner as the exosomes.

Study treatments will be given as add-on to standard of care. Following the 5 days of treatment, patients will remain in follow-up for 23 additional days. Patients who will be discharged before the end of the 5-day treatment period will continue to receive treatment at home. Treatment administration and the study assessments will be carried out by the research personnel at the home of the patient, implementing the required protective measures.

On Day 28, when the isolation period is completed, these patients will arrive at the study site for the follow-up visit.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 155
• Est. completion date: July 11, 2022
• Est. primary completion date: July 11, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 80 Years

Eligibility

Inclusion Criteria:

1. A COVID-19 diagnosis confirmed with a SARS-coV-2 viral infection positive polymerase chain reaction (PCR) test

2. Age 18-80 years

3. Severity of disease according to the following criteria (at least one clinical parameter and one laboratory parameter are required):

a. Clinical and Imaging-based evaluation i. Respiratory rate > 23/min and < 30/min ii. SpO2 at room air =94% and =90% iii. Bilateral pulmonary infiltrates >50% within 24-48 hours or a severe deterioration compared to imaging at admission b. Evidence of an exacerbated inflammatory process i. LDH score> 450 U/L ii. CRP >50 mg/L iii. Ferritin >1650 ng/ml iv. Lymphocytes >800 cells/mm3 v. D-dimers >1 mcg/ml

4. Willing and able to sign an informed consent

Exclusion Criteria:

1. Age<18 years or >80 years

2. Any concomitant illness that, based on the judgment of the Investigator is terminal

3. Ventilated patient

4. Pregnancy (positive urine pregnancy test [women of childbearing potential only]) or breastfeeding

5. Patients with Immunodeficiency (eg, CLL, HIV, rituximab therapy)

6. Unwilling or unable to provide informed consent

7. Participation in any other Interventional study in the last 30 days

Related Conditions & MeSH terms

• Clinical Deterioration
• COVID-19 Disease

Intervention

Drug:
• Exosomes overexpressing CD24
The suggested therapeutic agent here is based on an existing therapeutic platform that uses exosomes that were engineered to overexpress CD24 that can directly suppress the cytokine storm. The exosomes will be isolated and purified from human embryonic kidney T-REx™-293 cells that constitutively express high levels of human CD24.

Locations

Country	Name	City	State
Israel	Tel-Aviv Sourasky Medical Center	Tel-Aviv

Sponsors (2)

Lead Sponsor	Collaborator
Eli Sprecher, MD	OBCTCD24 Ltd

Country where clinical trial is conducted

Israel, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	To evaluate the safety of EXO-CD24 in the treatment of patients with moderate or severe COVID-19 disease		One year
Primary	To assess the efficacy of EXO-CD24 in the clinical improvement of COVID-19 disease		One year
Primary	To evaluate respiratory failure (defined as the need for mechanical ventilation, ECMO, non-invasive ventilation, or high-flow oxygen devices) rate.		One year
Primary	To evaluate the death rate.		One year
Primary	To evaluate time to improvement and recovery (COVID-19 clinical severity score of 3 or lower).		One year
Primary	To evaluate time from hospitalization to hospital discharge.		One year
Primary	To assess the COVID-19-related symptoms using patient-reported outcome measure (PRO) score.		One year
Secondary	To evaluate the effect of EXO-CD24 on the respiratory rate.		One year
Secondary	To evaluate the effect of EXO-CD24 on the change in blood oxygen saturation (SpO2).		One year
Secondary	To evaluate the effect of EXO-CD24 on the proportion of patients requiring ventilation.		One year
Secondary	To evaluate the effect of EXO-CD24 on the level of inflammatory markers (eg, CRP, ferritin, fibrinogen, di-dimers, IL-6, LDH, lymphocytes count.		One year