UKCCCR REGISTER OF UK CANCER TRIALS

The UKCCCR Register of U.K. Cancer Trials comprises an on-line databas e of all randomized trials of cancer therapy, whether phase III or ran domized phase II trials. Both current or open trials, and closed or co mpleted trials, are included. Abstracts of any publications associated with the trials are also included. The UKCCCR Register is the initial component of a larger European register of trials. This article descr ibes the structure and content of the database, the PC program for dat a entry, and the Unix-based browsing software for interactive access o ver networks. Problems of ensuring complete and comprehensive registra tion of trials, and sources of information, are also reviewed.