PMID- 31234699 OWN - NLM STAT- MEDLINE DCOM- 20210423 LR - 20220418 IS - 1531-1937 (Electronic) IS - 0897-1900 (Linking) VI - 33 IP - 6 DP - 2020 Dec TI - Successful Long-Term Prophylactic Treatment With Subcutaneous C1 Esterase Inhibitor in a Patient With Hereditary Angioedema. PG - 907-911 LID - 10.1177/0897190019857407 [doi] AB - BACKGROUND: Hereditary angioedema (HAE) patients suffer from recurrent swellings. Current standard therapy consists of C1 esterase inhibitor (C1-INH) and bradykinin receptor B2 antagonists. Severe courses require prophylactic treatment. For such patients, it has been demonstrated that the intravenous (IV) administration of C1-INH [C1-INH(IV)] is safe and effective. A new prophylactic option is subcutaneous (SC) treatment with C1-INH. METHODS AND CASE: We present the case of an HAE patient placed on prophylactic C1-INH(IV) therapy due to frequent attacks when managed with on-demand therapy. An implanted port allowed the periodical and safe application of medication until the device was explanted due to an infection. Due to the poor venous access, repeated IV application failed. Therefore, we began a SC treatment with 1500 IU C1-INH [C1-INH(SC)] as long-term prophylaxis and analyzed the clinical course over 16 months. RESULTS: Under the SC prophylaxis, the number of attacks were reduced to 1/month in comparison to 4.33/month with no prophylactic treatment and 1.83/month with C1-INH(IV). No severe attacks and no attack within the upper airway occurred over the 16 months of C1-INH(SC) treatment. As a result, quality of life improved, as measured by the Angioedema quality of life questionaire (AE-QoL). CONCLUSION: Self-administered SC prophylactic use of C1-INH over a period of 16 months seems to be a well tolerated and efficient. The patient's quality of life improved, and by learning self-application, the patient gained independence. FAU - Hahn, Janina AU - Hahn J AUID- ORCID: 0000-0001-7641-7118 AD - Department of Otorhinolaryngology, Head and Neck Surgery, 27197University Medical Center Ulm, Ulm, Germany. FAU - Nordmann-Kleiner, Melanie AU - Nordmann-Kleiner M AD - Department of Otorhinolaryngology, Head and Neck Surgery, 27197University Medical Center Ulm, Ulm, Germany. FAU - Trainotti, Susanne AU - Trainotti S AD - Department of Otorhinolaryngology, Head and Neck Surgery, 27197University Medical Center Ulm, Ulm, Germany. FAU - Hoffmann, Thomas K AU - Hoffmann TK AD - Department of Otorhinolaryngology, Head and Neck Surgery, 27197University Medical Center Ulm, Ulm, Germany. FAU - Greve, Jens AU - Greve J AD - Department of Otorhinolaryngology, Head and Neck Surgery, 27197University Medical Center Ulm, Ulm, Germany. LA - eng PT - Journal Article DEP - 20190624 PL - United States TA - J Pharm Pract JT - Journal of pharmacy practice JID - 8900945 RN - 0 (Complement C1 Inhibitor Protein) SB - IM MH - *Angioedemas, Hereditary/drug therapy/prevention & control MH - Complement C1 Inhibitor Protein MH - Humans MH - Quality of Life MH - Treatment Outcome OTO - NOTNLM OT - C1 inhibitor OT - bradykinin OT - hereditary angioedema OT - subcutaneous OT - therapy EDAT- 2019/06/27 06:00 MHDA- 2021/04/24 06:00 CRDT- 2019/06/26 06:00 PHST- 2019/06/27 06:00 [pubmed] PHST- 2021/04/24 06:00 [medline] PHST- 2019/06/26 06:00 [entrez] AID - 10.1177/0897190019857407 [doi] PST - ppublish SO - J Pharm Pract. 2020 Dec;33(6):907-911. doi: 10.1177/0897190019857407. Epub 2019 Jun 24.