Clinical Trials

INCLUSION CRITERIA

* Age of at least 18 years at the time of signing the informed consent.
* Cytologically or histologically confirmed ES-SCLC (American Joint Committee on Cancer \[AJCC\] 8th edition) and is untreated or received ≤1 cycle of platinum-etoposide and PD-L1 inhibitor therapy. It is acceptable to omit the first dose of PD-L1 inhibitor therapy due to logistical reasons if receiving SoC during or prior to the start of the screening period.
* Subject is a candidate for therapy with SoC which includes:

* Carboplatin for a maximum of 4 cycles
* Etoposide for a maximum of 4 cycles
* Atezolizumab
* At least 1SSTR-PET imaging-positive measurable site of disease (according to RECIST v1.1) and ≥50% of RECIST v1.1 measurable metastatic lesions must be SSTR-imaging positive.
* Adequate hematologic, renal and hepatic function

EXCLUSION CRITERIA

* Prior exposure to immune-mediated therapy,
* Known active or suspected autoimmune disease or any condition requiring systemic treatment with immunosuppressive medications within 14 days prior to first dose of study drug
* History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis. Note: History of radiation pneumonitis is permitted.
* Severe infection within 4 weeks and/or treatment with therapeutic oral or i.v. antibiotics within 2 weeks prior to initiation of study treatment.
* Prior allogeneic stem cell or solid organ transplantation.
* Treatment with a live, attenuated vaccine within 4 weeks prior to initiation of study treatment, or anticipation of need for such a vaccine during atezolizumab treatment or within 5 months after the final dose of atezolizumab.
* Radiotherapy to the chest prior to systemic therapy or planned consolidation chest radiation therapy. Radiation therapy outside of the chest for palliative care is allowed but must be completed \>2 weeks prior to first dose of study drug.
* Significant cardiovascular disease and/or resistant hypertension
* Subjects with previously treated central nervous system (CNS) metastases who have not recovered from acute side effects of radiotherapy.

Note: Other protocol defined Inclusion/Exclusion Criteria may apply.

Eligibility last updated 8/27/2025. Questions regarding updates should be directed to the study team contact.