A Study to Assess EDP-938 for the Treatment of Acute Upper Respiratory Tract Infection With Respiratory Syncytial Virus in Adult Subjects

Inclusion Criteria

• An informed consent document must be signed and dated by the subject
• Male or female individuals aged 18 to 75 years, inclusive.
• Up to 48 hours of URTI symptoms with at least one of the following symptoms:

Nasal discharge, nasal congestion, malaise/tiredness, headache, sinus congestion, sneezing, sore throat, hoarseness, cough, shortness of breath, respiratory wheeze, earache, and/or symptoms of fever.

• Positive for RSV infection and negative for influenza virus based on rapid diagnostic.
• Must be willing and able to adhere to the study assessments, visit schedules, prohibitions, and restrictions, as described in this protocol.

Exclusion Criteria

• SARS-CoV-2 positive within 28 days of Screening or at Screening following signature of full ICF.
• Clinical evidence of a lower respiratory tract infection, as determined by the Investigator.
• Anticipated need for hospitalization or emergency room care within 24 hours of Screening.
• Receipt of systemic antiviral, antibacterial, antifungal, or antimycobacterial therapy within 7 days of Screening and for the duration of the study
• Awareness of concomitant respiratory infections that are viral (other than RSV), bacterial, or fungal, including systemic bacterial or fungal infections, within 7 days of Screening.
• Frailty scale score ≥4 at Screening.
• History of chronic liver disease (eg, hemochromatosis, Wilson's disease, alpha-1 antitrypsin deficiency, autoimmune hepatitis, nonalcoholic steatohepatitis, and/or alcoholic liver disease); a history of biliary disease (eg, primary sclerosing cholangitis, cholecystitis, choledocholithiasis); or a history of portal hypertension. A diagnosis of hepatic steatosis (fatty liver) is not exclusionary.
• Heart disease: any congenital heart disease, acute or chronic heart failure, ischemic heart disease, congenital long QT syndrome, or any clinical manifestation resulting in QT interval prolongation.
• Neurological and neurodevelopmental disorders (including disorders of the brain, spinal cord, peripheral nerve, and muscle, eg, cerebral palsy, epilepsy [seizure disorders], stroke, muscular dystrophy, or spinal cord injury).
• Malignant tumor or history of malignancy that may interfere with the aims of the study or a subject completing the study.
• Prior receipt or the subject is waiting to receive a bone marrow, stem cell, or solid organ transplantation.
• Diagnosis of cystic fibrosis.
• Known positive human immunodeficiency virus, active hepatitis A virus infection, chronic hepatitis B virus infection, and/or current or treated hepatitis C virus infection.
• Prior or planned ileal resection or bariatric surgery.
• Pregnant or nursing female subjects.
• History of alcohol addiction or current heavy alcohol use defined as: >14 standard drinks per week and/or ≥4 standard drinks per occasion for males and >7 standard drinks per week and/or ≥3 standard drinks per occasion for females. A standard drink is 12 oz of beer (5% alcohol), 5 oz table wine (12% alcohol), or 1.5 oz of spirits (40% alcohol).
• Known or suspected, in the opinion of the Investigator, renal disease or renal impairment.
• Twelve-lead ECG demonstrating a QT interval corrected for heart rate according to Fridericia (QTcF) that is >500 msec or other clinically relevant abnormalities as judged by the Investigator at Screening.
• Use of or intention to use excluded or contraindicated medication(s) or supplements, including any medication known to be a moderate or potent inducer or inhibitor of the cytochrome P450 3A4 enzyme, within 14 days prior to Screening and for the duration of the study.
• Receipt of ≥14 days of systemic immunomodulator therapy (eg, oral corticosteroids) within 3 months of Screening.
• Prior to the first dose of study drug and during study participation, the subject has received any vaccine, investigational agent, or biological product within 30 days or 5 times the half-life, whichever is longer. Note: Influenza vaccination within