Clinical Trial of Efficacy and Safety of ММН-407 in Acute Respiratory Viral Infection

Design: multicenter, double blind, placebo-controlled, parallel group randomized clinical trial.

The study will enroll outpatients of either gender aged 18-70 years old with clinical manifestations of ARVI within the first day after the onset of the disease during seasonal ARVI morbidity.

After signing patient information sheet and informed consent form, medical history, thermometry, objective examination, laboratory tests and concomitant medication will be performed. Severity of ARVI symptoms is evaluated with 4-point scale.

The nasopharyngeal swabs for PCR diagnosis and verification of respiratory viruses will be performed prior to therapy to confirm the viral etiology of ARVI.

If a patient meets all inclusion criteria and does not have any exclusion criteria, at Visit 1 (Day 1) he/she will be randomized into one of two groups: the 1st group will take MMH-407 according to the dosage regimen for 5 days; the 2nd group will take Placebo according to MMH-407 dosage regimen for 5 days.

The study will use electronic patient diary for recording morning and evening axillary body temperature (measured using a mercury-free Geratherm Classic thermometer) and disease symptoms (Symptom Severity Score). Besides, antipyretic dosing (if applicable) and any aggravation in a patient's condition (if applicable, for safety evaluation/AE documentation) will also be recorded in a patient diary. The investigator will provide instructions on filling the diary; at Visit 1 the patient together with a doctor will record ARVI symptom severity and body temperature in the diary.

Patient will be observed for 14 days (screening, randomization - Day 1, treatment period - 5 days, follow-up - up to 2 days; deferred "phone visit" - Day 14).

During the treatment and follow-up period the patients or investigators will make 3 visits and the fourth "phone visit" will be scheduled additionally: 1) visits by physician/patient - on Days 1, 5 and 7 (Visits 1, 2 and 3) - in a study center or at home; 2) "phone visit" (Visit 4) - on Day 14.

At Visits 2 and 3, the investigator will perform an objective examination, document changes in the symptoms and concomitant medications to check patient diaries. At Visit 3 compliance will be evaluated and laboratory tests will be performed. "Phone visit" is carried out to interview the patient about his/her condition, presence/absence of secondary bacterial/viral complications and use of antibiotics.

During the study, symptomatic therapy and therapy for their co-morbidities are allowed with the exception of the drugs indicated in the section "Prohibited Concomitant Treatment".

Inclusion criteria

• Patients of either gender aged 18-70 years.
• Diagnosis of ARVI based on medical examination: axillary temperature ≥ 38.0°C at examination + total general symptoms score ≥4, nasal/throat/chest symptoms score ≥2.
• The first 24 hours after ARVI onset.
• Patients giving their consent to use reliable contraception during the study.
• Signed patient information sheet (informed consent form).

Exclusion criteria

• Clinical symptoms of severe influenza/ARVI requiring hospitalization.
• Suspected pneumonia, bacterial infection (including otitis media, sinusitis, urinary tract infection, meningitis, sepsis, etc.) requiring administration of antibiotics from the first day of illness.
• Suspected initial manifestations of diseases with symptoms similar to ARVI at onset (other infectious diseases, flu-like syndrome at the onset of systemic connective tissue diseases, and other pathology).
• Patients requiring antiviral medication prohibited within the study.
• Medical history of primary and secondary immunodeficiency.
• Medical history/suspicion of oncology of any localization (except for benign neoplasms).
• Aggravation or decompensation of chronic diseases affecting a patient's ability to participate in the clinical trial.
• Malabsorption syndrome, including congenital or acquired lactase or other disaccharidase deficiency, galactosemia.
• Allergy/ hypersensitivity to any component of the study drug.
• Pregnancy, breast-feeding; childbirth less than 3 months prior to the inclusion in the trial, unwillingness to use contraceptive methods during the trial.
• Course administration of the drug products specified in the section "Prohibited Concomitant Therapy" within two weeks prior to inclusion in the study.
• Patients who will not fulfill the requirements during the study or follow the order of administration of the studied drug products, from the Investigator's point of view.
• Medical history of mental diseases, alcoholism or drug abuse that according to the investigator's opinion will compromise compliance with the study procedures.
• Participation in other clinical trials for 3 months prior to enrollment in this study.
• Patients who are related to any of the on-site research personnel directly involved in the study or are an immediate relative of the investigator. 'Immediate relative' means husband, wife, parent, son, daughter, brother, or sister (regardless of whether they are natural or adopted).
• Patients who work for OOO "NPF "MATERIA MEDICA HOLDING" (i.e. the company's employees, temporary contract workers, designated officials responsible for carrying out the research or any immediate relatives of the aforementioned).