ACSQHC-ARCR-394

The iTestis Registry is a national research and clinical quality registry focused primarily on testicular cancer (germ cell cancers of the testes), with additional inclusion of rare retroperitoneal and mediastinal germ cell tumours. The registry captures detailed demographic, clinical, treatment, and outcomes data from participating sites across Australia. It provides a structured, clinician-led platform that supports both continuous quality improvement in clinical care and national research initiatives using real-world data. The registry is governed by the iTestis Steering Committee and supported by ongoing oversight from medical oncologists and other specialists in testicular cancer. iTestis data are routinely used to monitor adherence to evidence-based practice, identify variations in care, and inform educational feedback to contributing centres. The registry also serves as a research platform, supporting national and international collaborations, registry-based studies, and functioning as the electronic case report form (eCRF) backbone for multicentre clinical cohort studies. With a dual focus on research and quality, the iTestis Registry provides a robust infrastructure for advancing understanding and improving outcomes in testicular and related germ cell cancers.