NatureAn agentic system for rare disease diagnosis with traceable reasoningWeike ZhaoChaoyi WuYanjie FanPengcheng QiuXiaoman ZhangYuze SunXiao ZhouShuju ZhangYu PengYanfeng WangXin SunYa ZhangYongguo YuKun SunWeidi Xie2026-02-18Full textDOI https://doi.org/10.1038/s41586-025-10097-9