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Inhaled Recombinant Non-immunogenic Staphylokinase vs Placebo in Patients With COVID-19 - FORRIF Trial

Inhaled Recombinant Non-immunogenic Staphylokinase vs Placebo in Patients With COVID-19 - FORRIF Trial

Status
Terminated
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05135546
Acronym
FORRIF
Enrollment
4
Registered
2021-11-26
Start date
2021-12-27
Completion date
2023-05-31
Last updated
2023-07-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Brief summary

Objective: to evaluate the tolerability, safety and efficacy of inhaled usage of the Recombinant Non-immunogenic Staphylokinase (Fortelyzin®) vs placebo in patients with COVID-19.

Detailed description

Fortelyzin® (the active substance Forteplase) is a recombinant non-immunogenic staphylokinase with high fibrinselective thrombolytic activity. In a multicentre, randomised clinical trial in patients with ST-segment elevation myocardial infarction (FRIDOM), non-immunogenic staphylokinase was administered as a single intravenous bolus of 15 mg in all patients, regardless of bodyweight, and showed similar high reperfusion patency and fewer minor bleeding events compared with tenecteplase, as well as the absence of neutralising IgGs. Results of the multicentre, randomised clinical trial in patients with an acute ischaemic stroke (FRIDA) suggested that the non-immunogenic staphylokinase administrated as a single intravenous bolus of 10 mg in all patients within the 4-5 h after the onset of symptoms is non-inferior to alteplase. Mortality, symptomatic intracranial haemorrhage, and serious adverse events did not differ between treatment groups (Gusev EI, Martynov MYu, Nikonov AA et al. Non-immunogenic recombinant staphylokinase versus alteplase for patients with acute ischaemic stroke 4-5 h after symptom onset in Russia (FRIDA): a randomised, open label, multicentre, parallel-group, non-inferiority trial. Lancet Neurol. 2021; 20(9): 721-728). Complex coagulation and hematologic abnormalities, including significantly elevated D-dimer and fibrin/fibrinogen values are the distinct features identified in severe SARS-CoV-2. In the list of antithrombotic therapy drugs in conjunction with anticoagulant and antiplatelet therapy in patients with COVID-19, published by Liverpool Drug Interactions Group, fibrinolytic therapy is also included. So the main objectives of this study are to assess the tolerability, safety and efficacy of inhaled usage of fibrinolytic agent the recombinant non-immunogenic staphylokinase (Fortelyzin®) in patients with COVID-19.

Interventions

15 mg of drug reconstituted in 6 ml of 0.9% solution of NaCl for inhalation Other Name: Fortelyzin®

DRUGPlacebo

6 ml of 0.9% solution of NaCl for inhalation

Sponsors

Russian Academy of Medical Sciences
CollaboratorOTHER
Supergene, LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Masking description

Patients and study investigators will be blinded to subject treatment

Intervention model description

At clinical centers, patients will be randomly distributed by the envelope method into two groups to receive Fortelyzin® or placebo. The drugs will be administered after the signed informed consent. Fortelyzin® will be administered by inhalation of a dose of 15 mg.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Men and women aged 18 and over * Clinical status according to the WHO scale - 6, 7, 8 and 9 points. * Verified respiratory infection COVID-19 by real-time PCR (quantitative) * Patient consent to use reliable contraceptive methods throughout the study and for 3 weeks after: * women who have a negative pregnancy test and use the following contraceptives: intrauterine devices, oral contraceptives, contraceptive patch, prolonged injectable contraceptives, double barrier method of contraception. Women who are not fertile can also take part in the study (documented conditions: hysterectomy, tubal ligation, infertility, menopause for more than 1 year); * men using barrier contraception. The study may also involve men who are not fertile (documented conditions: vasectomy, infertility) * Availability of signed and dated informed consent of the patient to participate in the study.

Exclusion criteria

* Clinical status according to the WHO scale - 1, 2, 3, 4 and 5 points. * Increased risk of bleeding: * extensive bleeding at the present time; * intracranial (including subarachnoid) hemorrhage at the present time. * Lactation, pregnancy * Known hypersensitivity to Fortelyzin®.

Design outcomes

Primary

MeasureTime frameDescription
Number of patients discharged from the hospital with clinical status according to the WHO Ordinal Scale For Clinical Improvement - 3 points or less28 days post randomizationThe efficacy is evaluated in terms of the number of patients discharged from the hospital with clinical status according to the WHO Ordinal Scale For Clinical Improvement - 3 points or less

Secondary

MeasureTime frameDescription
Hospital length of stay28 days post randomizationThe efficacy is evaluated in terms of the hospital length of stay
Number of ICU-free days28 days post randomizationThe efficacy is evaluated in terms of the number of ICU-free days
Number of patients discharged from the hospital with clinical status according to the WHO Ordinal Scale For Clinical Improvement - 3 points or less14 days post randomizationThe efficacy is evaluated in terms of the number of patients discharged from the hospital with clinical status according to the WHO Ordinal Scale For Clinical Improvement - 3 points or less
Number of oxygen support-free days28 days post randomizationThe efficacy is evaluated in terms of the number of oxygen support-free days
SpO2 level7, 14 and 28 days post randomizationThe efficacy is evaluated in terms of the SpO2 level
Number of ventilation-free days28 days post randomizationThe efficacy is evaluated in terms of the number of ventilation-free days

Countries

Russia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026