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Efesovir (FS-1) for COVID-19, Phase 2

Randomized Controlled Open Study of Safety and Preliminary Efficiency of the Drug Efesovir (Oral Solution) for Coronavirus Infection (COVID-19)

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05060705
Enrollment
62
Registered
2021-09-29
Start date
2025-12-31
Completion date
2026-11-30
Last updated
2024-04-17

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

Conditions

Covid19

Keywords

COVID19, viral pneumonia, FS-1, Efesovir

Brief summary

Study of the efficacy and safety of the new drug Efesovir in comparison with the drug Remdesivir in the treatment of patients hospitalized with COVID-19. The hypothesis of clinical study is the clinical efficacy of new drug Efesovir is 10% to 30% higher than of Remdesivir.

Interventions

DRUGEfesovir

Antiviral therapy of COVID19 with Efesovir oral solution in dose 0.125 ml / kg two times per day. Duration of treatment is 5 - 10 days, depending on the severity of the disease.

Sponsors

Scientific Center for Anti-infectious Drugs, Kazakhstan
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Masking description

no masking, open label

Intervention model description

Participants are assigned to the one of two parallel groups: 1) treated with study drug Efesovir; 2) treated with referent drug Remdesivir.

Eligibility

Sex/Gender
ALL
Age
18 Years to 59 Years
Healthy volunteers
No

Inclusion criteria

* polymerase chain reaction (PCR) confirmed coronavirus infection (COVID-19) in hospitalized patients with severe risk factors in age from 18 years to 59 years, of both sexes, irrespective of national or ethnic origin * the duration of the COVID-19 disease is no more than 10 days * informed concent to participate in clinical trials * informed concent to to use reliable contraceptive methods while participating in a clinical trial

Exclusion criteria

* age less than 18 years old and over 59 years old * pregnancy or breastfeeding * hypersensitivity, allergy, intolerance to iodine, iodine-containing medicines * hypersensitivity to Remdesivir or its components * impaired consciousness, causing the impossibility of oral administration * conditions or circumstances that, in the opinion of the investigator, may affect the patient's safety or the quality of the results obtained * participation in another clinical trial, including in the period up to 2 months before this study * signs of multiple organ failure * alanine aminotransferase (ALT), aspartate aminotransferase (AST) is 5 or more times higher than normal * thrombocytopenia below 100 \* 10\^9/ l * decrease in glomerular filtration rate (GFR) less than 30 ml / min by 1.73 m2 * chronic heart failure with reduced ejection fraction * liver failure * coagulopathy * mechanical ventilation for 48 hours or more * extracorporeal membrane oxygenation (ECMO) * disseminated intravascular coagulation

Design outcomes

Primary

MeasureTime frameDescription
Clinical Response Rate21 daysClinical Response Rate is calculated as the number of trial subjects with effective treatment over the total number of subjects multiplied by 100. It is calculated in each study group. Measured in percents. The outcome is estimated among randomized subjects completed clinical study with the protocol requirements (per protocol population (PPP)). Clinical response is evaluated as effective treatment if: all signs and symptoms of COVID19 are resolved or improved with no worsening or appearance of new signs and symptoms; there is no requirement for additional antiviral of antibacterial therapy; chest roentgenograms (CT scans) are improved. The outcome is assessed in day 21 from the start of Study Drug treatment (visits 13).

Secondary

MeasureTime frameDescription
Early Clinical Response Rate in pneumonia72 hours (3 days) of study drug treatmentThe outcome is estimated in patients with pneumonia due to coronavirus infection (modified ITT population). It is defined as complete resolution or significant improvement of at least 2 of 4 main clinical symptoms of pneumonia (cough, shortness of breath, chest pain, sputum) within 72 hours after the start of Study (or Referent) Drug treatment. The outcome is measured in percents. The percentage of subjects with an early clinical response to pneumonia in the compared groups is statistically estimated.
Percentage of clinically stable patients72 hours (3 days) of study drug treatmentPercentage of patients at Day 3 who are clinically stable. Clinical stability defined as: * Blood oxygen saturation \>= 93% * Temperature \<=38.0°C * Heart rate \<=100 beats per minute * Respiratory rate \<=25 per minute * Systolic blood pressure ≥90 mm Hg * Ability to maintain oral intake * Normal mental status (oriented to person, place or time) A patient is considered to be clinically stable if all stability criteria are met. The outcome is assessed in ITT population. The difference between groups in the percentage of clinically stable patients from the total number of study subjects in the group is statistically evaluated.
Survival rate21 daysPercentage of participants surviving at day 21. The indicator is calculated as the number of live subjects at the last visit (day 21) divided by the total number of study subjects in the group multiplied by 100. The outcome is estimated among subjects who completed the study in compliance with the protocol (per protocol population (PPP)).
Early Clinical Response Rate72 hours (3 days) of study drug treatmentEarly clinical response rate defined as complete resolution or significant improvement of at least 2 of 4 leading baseline signs and symptoms within 72 hours after the start of Study (Referent) Drug treatment. It is estimated in the Intent to Treat (ITT) population. The outcome is measured in percents.
Adverse Events (AE)up to 21 daysThe safety of Study Drug (Referent Drug) will be assessed by adverse event and serious adverse event monitoring.
Thyroid gland functionDay 21Changes in laboratory parameters of thyroid gland function (hormones) at the last visit in comparison with the baseline data (thyroid stimulating hormone (TSH), free triiodothyronine (FT3)).
Clinical Status Change7 daysThe clinical status is determined by the ordinal scale: 1. Not hospitalized, no limitations on activities 2. Not hospitalized, limitation on activities and/or requiring home oxygen 3. Hospitalized, not requiring supplemental oxygen - no longer requires ongoing medical care 4. Hospitalized, not requiring supplemental oxygen - requiring ongoing medical care 5. Hospitalized, requiring supplemental oxygen 6. Hospitalized, on non-invasive ventilation or high flow oxygen devices 7. Hospitalized, on invasive mechanical ventilation or Extracorporeal Membrane Oxygenation 8. Death Clinical status is assessed in ITT population. The outcome is recorded at all visits, starting from the day of randomization. A decrease in points indicates the effectiveness of treatment. When the indicator changes during the day, the worst score of the day is recorded. Statistical analysis is performed on the Day 7 from the start Study Drug treatment, comparing with the score at randomization.

Countries

Kazakhstan

Contacts

Primary ContactMarina Lankina, PhD
m-lankina@list.ru+77057064410
Backup ContactGulshara Akhmetova, PhD
akhmetovagk@yandex.ru+77085348842

Outcome results

None listed

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