ZAZ held the 2nd Brazilian Health Technology Assessment Forum for Rare Diseases for the Unidos pela Vida Institute in São Paulo. The event brought experts to talk about the ways of generating evidence and real-life data in ATS, the challenges of access and sustainability of high-cost technologies for rare diseases in the SUS, participation, social control and the impact of narratives on HTA decision-making process and health education to qualify health technology assessment processes. The in-person forum featured a 12 meter wide stage, and lectures for more than xxx people in person. There were more than 16 hours of online transmission in Portuguese, English and Spanish that reached more than 2 thousand views.