This prospective, multicentre, observational study aims to assess the effectiveness and safety of durvalumab as consolidation treatment for patients with LS-SCLC who have not progressed following CRT in real-world setting.

In this study, the effectiveness and safety profile of durvalumab consolidation following CRT in patients with LS-SCLC will be investigated in a real-world setting. Clinical outcomes will be explored across different CRT modalities and regimens according to local practice. Additionally, evidence will be generated on durvalumab consolidation following CRT regardless of concurrent or sequential setting. The subsequent treatment patterns of patients who experience disease progression during or after durvalumab consolidation will also be evaluated.

Inclusion Criteria:

• Able to provide informed consent

• Age ≥18 years

• Histologically or cytologically documented LS-SCLC (Stage I-III SCLC [T any, N any, M0] according to the American Joint Committee on Cancer Staging Manual [AJCC Cancer Staging Manual, 8th Edition], that can be safely treated with definitive radiation doses. Excludes T3-4 due to multiple lung nodules that are too extensive or have tumor/nodal volume that is too large to be encompassed in a tolerable radiation plan)

• ECOG PS 0-2 (prior to the first dose of durvalumab after CRT)

• No disease progression following cCRT/sCRT (cCRT refers to chemotherapy and radiotherapy are administered with overlap; sCRT refers to chemotherapy and radiotherapy are delivered in a sequential manner with no overlap)

• Patients who received platinum-based cCRT/sCRT followed by durvalumab consolidation as first-line treatment at the discretion of physicians are eligible (the time interval from the end of cCRT/sCRT to the first dose of durvalumab consolidation should be within 3 months)

  • Patients who started durvalumab consolidation ≤3 months before enrolment in the study will be allowed (irrespective of whether they continue to receive durvalumab at time of enrolment or already discontinued treatment)

Exclusion Criteria:

• Patients treated with CRT only without subsequent durvalumab consolidation
• Patients received durvalumab or any other anti-PD-1/anti-PD-L1 antibodies along with CRT
• Patients who previously were involved, or currently are, or plan to be involved in any other interventional anti-cancer clinical studies for LS-SCLC
• Prior exposure to immune-mediated therapy including, but not limited to, other anti-PD-1, anti-PD-L1, and anti-PD-L2 antibodies, excluding therapeutic anticancer vaccines
• Judgment by the investigator that the patient should not participate in the study because the patient is unlikely to comply with study procedures

Adult male or female patients (with age ≥18 years old) who able to provide informed consent received platinum-based cCRT/sCRT followed by durvalumab consolidation as first-line treatment at the discretion of physicians and no disease progression following cCRT/sCRT

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA PhRMA Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org.

Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.