Phase 3 Efficacy and Safety Study of Favipiravir for Treatment of Uncomplicated Influenza in Adults



Status:Completed
Conditions:Influenza
Therapuetic Areas:Immunology / Infectious Diseases
Healthy:No
Age Range:18 - 80
Updated:4/21/2016
Start Date:December 2013
End Date:January 2015

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A Phase 3, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study Evaluating the Efficacy and Safety of Favipiravir in Adult Subjects With Uncomplicated Influenza

The purpose of this study is to determine if favipiravir is effective in reducing the time
to resolution of influenza symptoms.

The purpose of this study is to determine if a 5-day regimen of favipiravir reduces the time
to alleviation of influenza symptoms, resolution of fever, and viral shedding, in subjects
with uncomplicated influenza compared to no treatment (e.g. placebo).

Inclusion Criteria:

- At time of enrollment has 2 or more of the following symptoms (moderate to severe in
intensity) that began 48 hours or less prior to the anticipated start of dosing with
study medication: cough, sore throat, headache, nasal congestion, body aches and
pains, fatigue

- Has a fever at the first visit or in the 6 hours prior if antipyretics were taken,
defined as: ≥ 38.0°C (≥ 100.4°F) if < 65 years old; or ≥ 37.8°C (≥ 100.0°F) if ≥ 65
years old

- Tests positive for influenza A or B during the 48 hours between onset of symptoms and
anticipated dosing with study medication as confirmed by RAT or PCR testing (study or
non-study procedure); or per Investigator and Medical Monitor discretion in the event
there is a known influenza outbreak circulating in the community or the subject has
been in close contact with a person who was recently confirmed to have
laboratory-confirmed influenza

- Willing to adhere to strict contraceptive measures throughout study and for 3 months
following last dose of study medication

Exclusion Criteria:

- Female subjects who are pregnant, currently breast-feeding, or have a positive
pregnancy test at Screening

- Has taken an anti-influenza drug, or received any live attenuated influenza vaccine
within 4 weeks prior to signing the informed consent

- Has underlying chronic respiratory disease; includes bronchial asthma if currently
experience asthma symptoms, requires current asthma treatment, or has had an asthma
attack in the past year

- Is suspected of having bacterial respiratory infection (i.e., expectoration of
purulent or mucopurulent sputum and/or infiltrate in lung observed on chest x ray, or
is on antibiotics for pulmonary disease) at start of study

- Has a history of gout or is under treatment for: gout or hyperuricemia; hereditary
xanthinuria; hypouricemia or xanthine calculi of the urinary tract

- Has a history of hypersensitivity to an anti-viral nucleoside-analog drug targeting a
viral RNA polymerase

- Current use of adrenocorticosteroids (except topical preparation) or
immunosuppressive drugs

- Has an allergy or contraindication to use of acetaminophen (paracetamol)

- Has a serious chronic disease, history of alcohol or drug abuse within preceding 2
years, psychiatric illness not well controlled (not on stable regimen > 1 year), or
is deemed by the Investigator to be ineligible for any reason

- Previously participated in a clinical trial of favipiravir (T-705)

- Has renal insufficiency requiring hemodialysis or continuous ambulatory peritoneal
dialysis (CAPD)
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