Proof-of-Concept Trial to Assess the Efficacy and Safety of Fezolinetant in Improving Vasomotor Symptoms in Men With Prostate Cancer Undergoing Androgen Deprivation Therapy

Inclusion Criteria: * Male sex * Age 40 years and older * Diagnosis of prostate cancer * Androgen deprivation therapy * Presence of 5 or more moderate-to-severe hot flashes per day or 35 or more moderate-to-severe hot flashes per week * Ability to sign the inform consent * Willing to use reliable methods of contraception if partner is of childbearing age * Ability to record hot flashes electronically Exclusion Criteria: * Use of abiraterone acetate * Use of docetaxel and other chemotherapeutic agents * Liver cirrhosis * Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) above the upper limit of normal * Total bilirubin above the upper limit of normal * Glomerular filtration rate \< 30 mL/min * Use of selective serotonin reuptake inhibitors, serotonin-norepinephrine reuptake inhibitors, tricyclic antidepressants, sedatives, or hypnotics * Use of over-the-counter hormonal agents or herbal compounds * Current use of CYP1A2 inhibitors * Ingestion of alcohol within 2 weeks prior to the baseline visit * Inability to abstain from alcohol use during the study period.