A Confirmatory Study of TAU-284 in Pediatric Patients With Perennial Allergic Rhinitis

Inclusion Criteria: * Patients aged between 7 and 15 years * Patients with a weight of at least 20 kg * Patients who have received a diagnosis of perennial allergic rhinitis according to the diagnostic criteria * Patients with a mean rhinorrhea score of at least 2 and a mean total score for the three major nasal symptoms \[sneezing, rhinorrhea, and nasal congestion\] of at least 4 on the basis of symptoms recorded in the nasal allergy diary during the observation period Exclusion Criteria: * Patients with vasomotor rhinitis or eosinophilic rhinitis * Patients who have concurrent nasal disease that may affect the efficacy of TAU-284 * Patients with a history of any of the nasal surgical procedures * Patients who have a positive result for pollen antigens which are dispersed during the study period * Patients who have a positive result for dog dander or cat dander antigen * Patients with current or previous history of drug allergy * Patients who concurrently have renal function abnormalities that may cause safety problems