Febuxostat-Controlled, Double-Blind, Comparative Study of FYU-981 in Hyperuricemia With or Without Gout

Inclusion Criteria: * Serum urate level: * \>= 7.0mg/dL in patients with gouty nodule or with history of gout, or \>= 8.0mg/dL in patients with hypertension, diabetes or metabolic syndrome, or \>= 9.0mg/dL * Disease type in the classification of hyperuricemia: Uric acid-underexcretion type or mixed type * Outpatients Exclusion Criteria: * Gouty arthritis within 14 days before randomized allocation * Secondary hyperuricemia * HbA1c: \>= 8.4% * Clinically significant cardiac, hepatic, renal, hematologic or endocrine disease * Kidney calculi or clinically significant urinary calculi * AST: \>= 100 IU/L or ALT: \>= 100 IU/L * eGFR: \< 30 mL/min/1.73m\^2 * Systolic blood pressure: \>= 180 mmHg or diastolic blood pressure: \>= 110 mmHg