HAE is a rare condition. It causes sudden swelling under the skin and inside the body, like in the belly, throat, or genitals. This swelling happens because of a temporary leak in blood vessels but does not cause itching or hives. HAE is classified based on the amount of a protein in the blood called C1 inhibitor (C1-INH): HAE with normal C1-INH levels and HAE with limited or insufficient C1-INH levels (C1-INH deficiency). This study will concentrate on children with HAE C1-INH deficiency who have received Takhzyro (Lanadelumab) as prophylactic treatment. The main goal of the study is to assess how well lanadelumab works in children with HAE-C1INH deficiency in everyday life. This will be measured by checking how long children who receive lanadelumab will be free of HAE attacks. Other goals are to understand how children with HAE-C1INH deficiency are being treated with lanadelumab, how well the treatment works for them, how safe it is and how often these children need to use healthcare services (like doctor visits, hospital stays, etc.) because of their condition. The study will only look at data already existing in the participants' medical records. No treatment will be given as part of the study.
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Percentage of Participants who are Free of HAE Attacks
Timeframe: Up to 13 months