• A bicenter, prospective, longitudinal observational study utilized MR-guided radiotherapy (MRgRT) to treat adrenal gland metastasis, emphasizing precision and minimizing radiation exposure.
• Secure multiparty computation (MPC) was employed to analyze patient data jointly between two sites while maintaining data privacy and adhering to strict data protection laws.
• The MPC framework, including Sharemind MPC and Federated Secure Computing, ensured that data remained within each clinical site, with only aggregate results accessible to researchers.
• This approach facilitated detailed studies on rare cancers like adrenal gland metastases, overcoming privacy obstacles and advancing personalized oncology through collaborative data analysis.