J-CONNECT is a robust oncology database in which clinical and biomarker variables are available, although completeness may vary; fitness-for-purpose should be assessed on a study-by-study basis. Coverage and distributional characteristics and also regulatory acceptance highlight its value for research, PMS, and policy. Future directions include expansion to 25 hospitals, integration of outcome and resource-use data, and adoption of common data models for broader collaboration. We believe J-CONNECT provides valuable oncology data supporting research, post-marketing surveillance, and public health policy in Japan.
OKADA et al. (Fri,) studied this question.