Today the Japan Registry for Clinical Trials (jRCT) became a member of the Primary Registry Network of ICTRP. jRCT is also member of the Japanese Primary Registries Network (JPRN) which will allow them to feed data into ICTRP. jRCT was established by the Ministry of Health, Labor and Welfare (MHLW) based on the Clinical Trial Act (Law No. 16 of Heisei 29) that took effect in April this year. This will contribute to research transparency and will ensure the registration of all clinical trials conducted in Japan.