About JJCO

Since 1971
JJCO was established in 1971 as the first journal from Japan to publish clinical research on cancer in English. It was a biannual journal for the first 11 years, and as the number of submissions increased, it became quarterly in 1983 and bimonthly in 1991. Since 1998, the JJCO has been published monthly.

International Journal
It has been indexed in Index Medicus and MEDLINE since 1983, and approximately 40% of the submissions come from outside Japan. Since the Oxford University Press (OUP) became our publisher in 1997, JJCO has a sister-journal relationship with the Journal of the National Cancer Institute. The current impact factor for JJCO is 0.786.

Online Journal
JJCO is published not only in hardcopy but also in electronic form on the Internet from volume 27. It is now a HighWire-based journal and articles can be accessed via OUP database. All articles become freely accessible 6 months after publication.
See "Current & past issues".

Financial support
The JJCO is not owned by a medical society or an institution. It receives financial support from the Foundation for Promotion of Cancer Research that was established by the Ministry of Health, Labor and Welfare to assist cancer research in Japan.

National Cancer Center (NCC), Tokyo
The NCC has played a central role in managing the journal. The successive Editors-in-Chief have all been presidents of the NCC, and the majority of the associate editors are related to the institution. The editorial office is located in the NCC campus.