Participants with CD30-positive lympoma will be treated with brentuximab vedotin according to their clinic's standard practice.

The main aim of this study is to collect information on any side effects from treatment with brentuximab vedotin. Other aims are to collect information on how brentuximab vedotin is used to treat these participants and the outcomes of these participants.

This is an observational, non-interventional, prospective study in participants with CD30-positive lymphoma who are receiving or will receive the standard treatment of brentuximab vedotin. This study will assess the safety profile and effectiveness of brentuximab vedotin in the real-world clinical practice.

The study will enroll approximately 1000 participants. The data will be collected and recorded in the medical record for the purpose of medical care and also recorded in electronic case report forms (e-CRFs). All the participants will be assigned to a single observational cohort:

• All participants with CD30-positive lymphoma

This multi-center trial will be conducted in China. All participants will be followed up for 24 months unless withdrawal of Informed Consent, lost or death, whichever comes first. The overall duration of the study will be approximately 4 years.

Inclusion Criteria:

1. Undergoing treatment with brentuximab vedotin (of less than 3 months from initial treatment with brentuximab vedotin) or to be received with brentuximab vedotin.
2. CD30-positive lymphoma by INV (any CD30 expression)

Exclusion Criteria:

1. Who currently participates in or with plan to participate in any interventional clinical trial.

Participants with CD30-positive lymphoma, who have been prescribed brentuximab vedotin in clinical practice will be observed prospectively.

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.