A Study of OBIZUR in Adults With Acquired Hemophilia A (AHA) in South Korea

Number of participants with AEs, causality to AEs, SAEs and AESI will be reported. The investigator will assess the causal relationship (causality) between the medicinal product and the AE using his/her clinical expertise and judgment.

Unexpected AE is defined as AE that differs from the information in the product label in nature, severity, specificity, or outcome.

An ADR refers to any undesirable and unintended reaction which occurs during or following the administration of the drug, and in which a causal relationship with the drug cannot be ruled out. In the event that a causal relationship with the drug remains unknown amongst reported adverse events, such reaction shall be considered an adverse drug reaction. Serious ADR means noxious or unintended response to a drug that occurs at any dosage and that requires in-patient hospitalization or prolongation of existing hospitalization, causes congenital malformation, results in persistent or significant disability or incapacity, is life-threatening or results in death. Unexpected ADRs is defined as ADR that differs from the information in the product label in nature, severity, specificity, or outcome.

SSR include following events: Pregnancy: any case in which a pregnancy participant is exposed to a Takeda Product or in which a female participant or partner of a male participant becomes pregnant following Takeda product.; Breastfeeding: infant exposure from breast milk; Overdose: all information of any accidental or intentional overdose; Drug abuse, misuse or medication error: all information on medicinal product (MP) abuse, misuse of medication error (potential or actual); Suspected transmission of infectious agent: Suspected (in sense of confirmed or potential) transmission of infectious agent by a MP; Lack of efficacy of Takeda Product; accidental/occupational exposure; Use outside the terms of the marketing authorization, also known as "off-label" and "off-label use"; Use of falsified and counterfeit MP; Drug-drug and drug-food interactions; Inadvertent or accidental exposure with or without an AE; Unintended benefit.

Overall Bleeding Control will be determined as either bleeding stopped or did not stop.

Time to achieve bleeding control will be assessed from initiation of OBIZUR Injection (start time) to the time to achieve bleeding control (stop time).

Number of OBIZUR injection infusion required to achieve bleeding control will be reported.

OBIZUR dose required to stop the bleeding will be reported.

Bleeding events will be evaluated and reported as re-bleed, concurrent bleed and subsequent bleed. Re-bleed: if it occurs in the same anatomical location and within 72 hours of the resolution of the previous bleeding. Concurrent bleed: if it occurs at the same time (that is, during treatment or within 72 hours of resolution) as previous bleed but at a different anatomical location. Subsequent bleed: if it is a new bleed occurring 72 hours after the resolution of the previous bleed (either in the same anatomical location or in a new one).