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Clinical Trial, Phase III
Journal Article
Multicenter Study
Randomized Controlled Trial
Efficacy and safety of tadalafil 5 mg once-daily in Asian men with both lower urinary tract symptoms associated with benign prostatic hyperplasia and erectile dysfunction: A phase 3, randomized, double-blind, parallel, placebo- and tamsulosin-controlled study.
International Journal of Urology : Official Journal of the Japanese Urological Association 2019 Februrary
OBJECTIVE: To evaluate the efficacy and safety of tadalafil in Asian men with both lower urinary tract symptoms associated with benign prostatic hyperplasia and erectile dysfunction.
METHODS: The present phase 3, randomized, double-blind, parallel, placebo- and tamsulosin-controlled study was carried out at 40 study centers in the Asia-Pacific region (mainland China, Taiwan and Korea; NCT01937871). Participants were randomized to receive a placebo (n = 361), tadalafil 5 mg (n = 362) or tamsulosin 0.2 mg (n = 185) in a 2:2:1 ratio for 12 weeks.
RESULTS: A total of 909 Asian men were randomized into three groups. After 12 weeks of treatment, a statistically significant improvement in least squares mean change from baseline in total International Prostate Symptom Score was observed in the tadalafil versus the placebo group (-5.49 vs -4.08, respectively; P < 0.001). A statistically significant improvement in the change from baseline for the International Index of Erectile Function-Erectile Function domain score, was observed in tadalafil compared with the placebo at 12 weeks (5.24 vs 1.88, respectively; P < 0.001). A significant improvement was observed in the change from baseline in the percentage of "Yes" responses to Sexual Encounter Profile questions 2 and 3 in the tadalafil versus placebo group at 12 weeks (23.87% vs 10.90%; P < 0.001 and 36.62% vs 15.96%; P < 0.001, respectively). Safety results were consistent with the known tadalafil safety profile.
CONCLUSIONS: Tadalafil is efficacious and well tolerated in the treatment of Asian men with both lower urinary tract symptoms associated with benign prostatic hyperplasia and erectile dysfunction.
METHODS: The present phase 3, randomized, double-blind, parallel, placebo- and tamsulosin-controlled study was carried out at 40 study centers in the Asia-Pacific region (mainland China, Taiwan and Korea; NCT01937871). Participants were randomized to receive a placebo (n = 361), tadalafil 5 mg (n = 362) or tamsulosin 0.2 mg (n = 185) in a 2:2:1 ratio for 12 weeks.
RESULTS: A total of 909 Asian men were randomized into three groups. After 12 weeks of treatment, a statistically significant improvement in least squares mean change from baseline in total International Prostate Symptom Score was observed in the tadalafil versus the placebo group (-5.49 vs -4.08, respectively; P < 0.001). A statistically significant improvement in the change from baseline for the International Index of Erectile Function-Erectile Function domain score, was observed in tadalafil compared with the placebo at 12 weeks (5.24 vs 1.88, respectively; P < 0.001). A significant improvement was observed in the change from baseline in the percentage of "Yes" responses to Sexual Encounter Profile questions 2 and 3 in the tadalafil versus placebo group at 12 weeks (23.87% vs 10.90%; P < 0.001 and 36.62% vs 15.96%; P < 0.001, respectively). Safety results were consistent with the known tadalafil safety profile.
CONCLUSIONS: Tadalafil is efficacious and well tolerated in the treatment of Asian men with both lower urinary tract symptoms associated with benign prostatic hyperplasia and erectile dysfunction.
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