A Study of Atezolizumab With or Without Tiragolumab Consolidation in Limited Stage Small Cell Lung Cancer
Carcinoma, Small Cell Lung
About this trial
This is an interventional treatment trial for Carcinoma, Small Cell Lung
Eligibility Criteria
Inclusion Criteria:
- Signed Informed Consent Form
- ECOG performance status of 0 or 1
- Histologically confirmed limited-stage SCLC.
- Patients who have not progressed during/after chemoradiotherapy.
- Concurrent or sequential chemoradiotherapy per local clinical practice must have been completed within 6 weeks prior to the first study treatment. If concurrent CRT is used, at least two cycles of chemotherapy should have been conducted during radiotherapy. If sequential radiotherapy is used, induction chemotherapy should be given 2 cycles of chemotherapy before thoracic radiotherapy.
- Adequate hematologic and end organ function.
- For women of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive methods that result in a failure rate of < 1% per year during the treatment period and for at least 5 months after the final dose of atezolizumab or placebo, and 90 days after the final dose of tiragolumab or placebo, and 6 months for chemotherapy after the last dose of chemotherapy treatment, whichever is later.
- For men: agreement to remain abstinent or use contraceptive measures and agreement to refrain from donating sperm.
- Patients must have recovered from all acute toxicities from previous therapy, excluding alopecia and toxicities related to prior therapy.
- Patients must submit a pre-treatment tumor tissue sample.
Exclusion Criteria:
- Histology mixtured or Extensive-stage SCLC (per the Veterans Administration Lung Study Group (VALG) staging system).
- Uncontrolled pleural effusion or pericardial effusion requiring recurrent drainage procedures
- Evidence of significant uncontrolled concomitant disease that could affect compliance with the protocol, including significant liver disease
- Malignancies other than SCLC within 5 years prior to study treatment initiation, with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome
- Pregnancy or breastfeeding, or intention of becoming pregnant during study treatment or within 5 months after the final dose of atezolizumab and 90 days after the final dose of tiragolumab, and 6 months for chemotherapy after the final dose of the chemotherapy treatment.
- Active or history of autoimmune disease or immune deficiency
- Uncontrolled or symptomatic hypercalcemia
- History of idiopathic pulmonary fibrosis, organizing pneumonia, drug-induced pneumonitis, idiopathic pneumonitis, or evidence of active pneumonitis on screening chest CT scan.
- Positive test result for HIV
- Patients with active hepatitis B or hepatitis C virus
- Active tuberculosis
- Severe infections within 4 weeks prior to study treatment initiation, including but not limited to hospitalization for complications of infection, bacteremia, or severe pneumonia
- Significant cardiovascular disease
- Prior treatment with CD137 agonists or immune checkpoint blockade therapies, anti-CTLA4, anti-tigit, anti-PD-1, and anti-PD-L1 therapeutic antibodies
- Unresolved toxic effects of grade 2 or higher (CTCAE 5.0), including grade ≥ 2 pneumonitis from previous therapy
- Active EBV infection or known or suspected chronic active EBV infection at screening.
Sites / Locations
- Beijing Cancer Hospital
- Jilin Cancer Hospital
- Hu Nan Provincial Cancer Hospital
- Sichuan Cancer Hospital
- Southwest Hospital , Third Military Medical University
- Fujian Cancer Hospital
- Sun Yet-sen University Cancer Center
- The First Affiliated Hospital of Guangzhou Medical University
- Harbin Medical University Cancer Hospital
- Anhui Province Cancer Hospital
- Shandong Cancer Hospital
- Guangxi Cancer Hospital of Guangxi Medical University
- Fudan University Shanghai Cancer Center; Medical Oncology
- Tianjin Cancer Hospital
- Tumor Center,Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
- First Affiliated Hospital of Medical College of Xi'an Jiaotong University
- Henan Cancer Hospital
Arms of the Study
Arm 1
Arm 2
Experimental
Experimental
Arm A: Atezolizumab + Tiragolumab
Arm B: Atezolizumab + Placebo
Participants will receive atezolizumab + tiragolumab intravenously on the first day of each cycle. One cycle of therapy will be defined as 21 days. Atezolizumab and tiragolumab treatment will continue up to 17 doses unless investigator-assessed loss of clinical benefit, unacceptable toxicity, investigator or patient decision to withdraw from therapy, or death (whichever occurs first).
Participants will receive atezolizumab + placebo on the first day of each cycle. One cycle of therapy will be defined as 21 days. Atezolizumab and placebo treatment will continue up to 17 doses unless investigator-assessed loss of clinical benefit, unacceptable toxicity, investigator or patient decision to withdraw from therapy, or death (whichever occurs first).