Overview
This study is designed to evaluate the safety after switching to garadacimab from another prophylactic hereditary angioedema (HAE) treatment (marketed kallikrein \[KK\] inhibitor or plasma-derived C1-esterase inhibitor \[pdC1INH\]prophylactic) when administered once monthly for approximately 3 months in participants aged greater than or equal to (\>=) 12 years with HAE.
Eligibility
Inclusion Criteria:
- • Aged \>= 12 years at the time of providing written informed consent / assent.
- • Have a history of response to on-demand HAE treatment for the treatment of acute HAE attacks.
- • Documented laboratory diagnosis in medical records of C1-esterase inhibitor hereditary angioedema (HAE-C1INH) type 1 or type 2:
- ◦ Documented clinical history consistent with HAE (subcutaneous or mucosal, nonpruritic swelling episodes without accompanying urticaria),
- ◦ C1-esterase inhibitor (C1INH) antigen concentration or functional activity less than (\<) 50% of normal as documented in the participant's medical record, or
- ◦ C4-antigen concentration below the lower limit of the reference range as documented in the participant's medical record.
- For HAE-nC1INH: Documented clinical history consistent with HAE (subcutaneous or mucosal, nonpruritic swelling episodes without accompanying urticaria); an HAE-associated FXII gene mutation (eg, FXII point mutation Thr328Lys or Thr328Arg, or deletion of 72 base pairs \[c.971\_1018 + 24del72\], or duplication of 18 base pairs \[c.892-909dup\]), as documented in the participant's medical record, OR an HAE-associated plasminogen gene mutation (PLG) gene mutation (eg, PLG point mutation Lys330Glu), as documented in the participant's medical record; C1INH antigen concentration or functional activity 70 to 120% of the normal level, as documented in the participant's medical record.
- • Use of lanadelumab, berotralstat, or pdC1INH for the prophylactic treatment of HAE and be on a stable (consistent) dose / regimen of such medication for at least 3 months prior to Screening.
Exclusion Criteria:
- • Concomitant diagnosis of another form of angioedema, such as idiopathic or acquired angioedema or recurrent angioedema associated with urticaria.
- • Use of androgens, antifibrinolytics, or investigational products (other than garadacimab) for routine prophylaxis against HAE attacks.
- • Known or suspected hypersensitivity to monoclonal antibody therapy or hypersensitivity to the active substance (garadacimab) or to any of the excipients.