The main aim of this study is to check for side effects and medical problems in participants with hemophilia A who are receiving ADYNOVATE in routine clinical practice. Also, it will be checked how effective ADYNOVATE is at stopping a bleed, at preventing bleeding episodes when used routinely for prevention and at controlling hemophilia-related bleeding during surgeries.

Participants with hemophilia A who will be newly prescribed with ADYNOVATE treatment or have already been taking ADYNOVATE treatment according to the physician's decision will be included in this study.

Participants will visit the study clinic as a part of their routine clinical practice and will be contacted by phone calls/home visits by home care workers for collection of treatment related data during the 6-month observation period.

Inclusion Criteria

Participants with a diagnosis of hemophilia A who will be newly prescribed with ADYNOVATE or already have been prescribed ADYNOVATE according to the study physician's judgment shall be included in this study if:

• The participant or legally authorized representative has given written informed consent to participate in the study.
• The participant is indicated for treatment according to the ADYNOVATE South Korea prescribing information (PI).

Exclusion Criteria

Participants should be excluded from this study if:

• The participant or legally authorized representative does not wish to participate in the study.
• Any of the contraindications included in the PI for ADYNOVATE apply.
• Participant is enrolled in an interventional trial using an investigational product other than ADYNOVATE.

Hemophilia A participants in South Korea who will be newly prescribed with ADYNOVATE or already been prescribed with ADYNOVATE will be included in this study.

Takeda provides access to the de-identified individual participant data (IPD) for eligible studies to aid qualified researchers in addressing legitimate scientific objectives (Takeda's data sharing commitment is available on https://clinicaltrials.takeda.com/takedas-commitment?commitment=5). These IPDs will be provided in a secure research environment following approval of a data sharing request, and under the terms of a data sharing agreement.

IPD from eligible studies will be shared with qualified researchers according to the criteria and process described on https://vivli.org/ourmember/takeda/. For approved requests, the researchers will be provided access to anonymized data (to respect patient privacy in line with applicable laws and regulations) and with information necessary to address the research objectives under the terms of a data sharing agreement.