BREZTRI REGULATORY POST MARKETING SURVEILLANCE IN KOREA

This is an open-label, primary data collection, single-arm, multicentre, observational study. Eligible patients who initiate treatment with Breztri according to approved indications will be enrolled after obtaining informed consent. All patients treated (minimum 600 patients required) with Breztri in accordance with the local prescribing information are eligible for enrolment in this study. Initiation or continuation of Breztri prescription and patient enrolment will depend on physicians' medical decisions as per routine clinical practice. Approximately 30 study sites are expected to participate in this study.

As this study will be performed under clinical practice, the investigator may prescribe any other concomitant medications that are necessary for the patient as locally approved.

The total number of visits and the visit time will be determined at the discretion of the investigator based on the patient's condition.

Patients will be observed for up to 24 weeks. Follow-up will begin on the date of the first administration of Breztri (index date). However, if a patient is found to meet any of the exclusion criteria after enrolment, no additional follow-up (including the 30-day safety follow-up) will be conducted.

The primary objective of this study is to characterize the safety profile separately in patients with COPD and in patients with asthma receiving Breztri under the approved indication(s) in Korea over a 24-week follow-up period, or until the end of treatment (EoT) if discontinued earlier.

The secondary objective of this study is to describe changes in clinical outcomes from baseline to week 12 and week 24, separately in patients with COPD and in patients with asthma receiving Breztri under the approved indication(s) in Korea.

The exploratory objective of this study is to identify patients' baseline characteristics that might be associated with safety and clinical outcomes separately in patients with COPD and in patients with asthma receiving Breztri under the approved indication(s) in Korean patients.

Primary outcomes

• Incidence proportion of Adverse Events (AEs)/Adverse Drug Reactions (ADRs) [24 weeks]: All AEs/ADRs will be presented as the number of patients with an outcome of interest, the incidence proportion percentages, and the number of events, the corresponding Clopper-Pearson's two-sided 95% exact confidence interval (CI), and the number of events.
• Incidence proportion of Serious AEs (SAEs)/Serious ADRs (SADRs) [24 weeks]: SAEs/SADRs will be presented as the number of patients with an outcome of interest, the incidence proportion percentages, and the number of events, the corresponding Clopper-Pearson's two-sided 95% exact confidence interval (CI), and the number of events.
• Incidence proportion of Unexpected AEs/Unexpected ADRs [24 weeks]: Unexpected AEs/ADRs will be presented as the number of patients with an outcome of interest, the incidence proportion percentages, and the number of events, the corresponding Clopper-Pearson's two-sided 95% exact confidence interval (CI), and the number of events.
• Incidence proportion of Unexpected SAEs/Unexpected SADRs [24 weeks]: Unexpected SAEs/SADRs, will be presented as the number of patients with an outcome of interest, the incidence proportion percentages, and the number of events, the corresponding Clopper-Pearson's two-sided 95% exact confidence interval (CI), and the number of events.

Secondary outcomes

• Describe changes in clinical outcomes from baseline to week 12 and 24 in patients with COPD receiving Breztri under the approved indication(s) in Korea [12 and 24 weeks]: Change from baseline to week 12 and 24(within a window of ±6 weeks) in predose Forced Expiratory Volume in 1 second (FEV₁) FEV₁ represents the volume of air forcibly exhaled in the first second of a forced expiratory maneuver, measured in milliliters (mL). Improvement indicates enhanced lung function.
• Change from baseline to week 12 and 24 in COPD Assessment Test (CAT) score [12 and 24 weeks]: Change from baseline to week 12 and 24(within a window of ±6 weeks) in COPD Assessment Test (CAT) score The CAT is an 8-item questionnaire assessing the impact of COPD symptoms on health status. Scores range from 0 (best) to 40 (worst), with lower scores indicating better health status.
• Describe changes in clinical outcomes from baseline to week 12 and 24 in patient with asthma receiving Breztri under the approved indication(s) in Korea [12 and 24 weeks]: Change from baseline to week 12 and 24(within a window of ±4 weeks) in investigator assessed asthma control Asthma control assessed by the study investigator according to GINA guidelines: "Well controlled", "Partly controlled", and "Uncontrolled".

Sex: All

Inclusion Criteria:

1. Patients who have been diagnosed with COPD or asthma.
2. Patients who have newly initiated treatment with Breztri according to the approved label in Korea
3. Provision of signed and dated written informed consent by the patient or legally acceptable representative

Exclusion Criteria:

1. Other off-label indications outside of the locally approved prescribing information
2. Pregnant and/or breast feeding
3. Current participation in any interventional trial