Hereditary angioedema treatment beyond biologics: current state of preventive and on-demand approaches and new perspectives.

Introduction: Hereditary angioedema (HAE) is a genetic rare condition characterized by recurrent attacks of swelling that might be potentially life-threatening. Recurrence and severity of attacks may impact psychological life, expectations and productivity. We aim to review the state-of-the-art of HAE preventive and on-demand treatment of non-biologic drugs, providing a perspective of their personalized use and development.

Areas covered: This literature analysis integrates international guidelines and clinical trial data on on-demand therapies and short-/long-term prophylaxis. Modern medications should be considered and personalized for HAE patients to provide benefits compatible with patients' lifestyles, preferences, and experiences. Accordingly, a new era toward oral formulations has begun starting from berotralstat, with a consistent number of drugs under development.

Expert opinion: All HAE patients should have an effective on-demand treatment available in case of attacks. Long-term prophylaxis (LTP) should be considered and individualized for all patients at every visit, following a shared decision-making approach to optimize disease control while limiting side effects. Parenteral administration of LTP is associated with treatment complexities and barriers. Oral treatment could address practical needs for HAE patients both in preventive and on-demand setting, avoiding injection-related side effects, reducing treatment burden, and improving quality of life. In the next future, significant advances in HAE therapeutics could result from gene therapy.