The purpose of this study is to evaluate the effect of JNJ-53718678 on the development of respiratory syncytial virus (RSV) lower respiratory tract infection (LRTIs) in adult hematopoietic stem cell transplant (HSCT) recipients with RSV upper RTI.
A Randomized, Double-blind, Placebo-controlled Study to Evaluate the Clinical Outcomes, Antiviral Activity, Safety, Tolerability, Pharmacokinetics, and Pharmacokinetics/Pharmacodynamics of JNJ-53718678 in Adult and Adolescent Hematopoietic Stem Cell Transplant Recipients With Respiratory Syncytial Virus Infection of the Upper Respiratory Tract
RSV is recognized as major respiratory pathogen in infants and young children and causes upper and lower respiratory illness among all age groups, often going undiagnosed. Immunocompromised (IC) participants have a reduced ability to combat infection due to an impaired or weakened immune system. Within the IC population, HSCT recipients are generally regarded as having a particularly high risk for more severe disease caused by RSV, representing a substantial unmet need for antiviral treatment of RSV infections in this participant population. JNJ-53718678 is an investigational, potent small molecule respiratory syncytial virus (RSV) specific fusion inhibitor. The study will include a Screening Period (Day -2 to Day 1), a Treatment Period (Day 1 to Day 21), and a Follow-up Period (Day 22 to Day 49). Assessments like chest X-ray, pulse/heart rate, respiratory rate, electrocardiogram (ECG), etc will be performed. Safety and efficacy will be assessed through the study. The total study duration for each participant will be approximately 49 days.