Methods
Study Setting
This surveillance was a prospective, multicenter, observational
study, and was performed in compliance with Good Postmarketing
Study Practice, an ordinance issued by the Ministry
of Health, Labor and Welfare establishing the standards for implementation
of post-marketing surveillance of all new drugs
approved in Japan. Although the total study period is from
2011 to 2015, interim result from 2011 to 2013 have been already
reported to the Pharmaceuticals and Medical Devices
Agency in Japan. The study is planning for final registration of
3,000 patients. In the present report, we describe the interim results
for the efficacy and safety features of tolvaptan.