Zanalys was born from a conviction, that no disease is rare enough not to attract the attention of the scientific and medical communities, and from a sense of urgency, that of the need to accompany doctors and patients in order to accelerate the detection and management of rare diseases, to improve their follow-up and to prevent their complications. Alongside the admirable work done by researchers, physicians and patient organizations, zanalys wants to transform the management of patients with rare diseases, because all patients have an equal right to access expert care.