A Phase II Single-Arm Study of Atezolizumab Monotherapy in Locally Advanced or Metastatic Non-Small Cell Lung Cancer: Clinical Evaluation of Novel Blood-Based Diagnostics
Overview
- Phase
- Phase 2
- Intervention
- Atezolizumab
- Conditions
- Non-Small Cell Lung Cancer
- Sponsor
- Genentech, Inc.
- Enrollment
- 153
- Locations
- 20
- Primary Endpoint
- Percentage of Participants With Objective Response Per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) as Determined by Investigator
- Status
- Completed
- Last Updated
- 6 years ago
Overview
Brief Summary
This was a Phase II, open-label, prospective, multicenter study designed to evaluate the efficacy and safety of single-agent atezolizumab as a first-line therapy in participants with locally advanced or metastatic non-small cell lung cancer (NSCLC). In addition, the primary biomarker objective was to measure blood tumor mutational burden (bTMB) and evaluate whether it can predict for improved clinical outcome with atezolizumab.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
- •Histologically or cytologically confirmed Stage IIIB-IVB NSCLC
- •For participants who have received prior neo-adjuvant/adjuvant chemotherapy or chemoradiotherapy with curative intent for non-metastatic disease: a treatment-free interval of at least 6 months prior to enrollment
- •Participants with any programmed death-ligand 1 (PD-L1) test result by immunohistochemistry (IHC) are eligible for the study
- •Participants without a PD-L1 test result are eligible for the study
- •Measurable disease per RECIST v1.1
- •Adequate hematologic and end-organ function
- •Agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive methods among women of childbearing potential
Exclusion Criteria
- •Prior treatment with immunotherapy for any stage NSCLC, including early-stage (neoadjuvant or adjuvant) disease
- •Participants with epidermal growth factor receptor (EGFR) sensitizing mutations and anaplastic lymphoma kinase (ALK) rearrangements
- •Active central nervous system (CNS) metastases requiring treatment
- •Spinal cord compression not definitively treated or not clinically stable
- •Leptomeningeal disease
- •Uncontrolled tumor-related pain
- •Uncontrolled pleural, pericardial effusions, or ascites requiring recurrent drainage procedures
- •Uncontrolled or symptomatic hypercalcemia
- •Malignancies other than NSCLC within 5 years prior to enrollment, except for those curatively treated with negligible risk of metastasis or death
- •Pregnant or lactating women
Arms & Interventions
Atezolizumab
Participants received 1200 milligrams (mg) of atezolizumab administered by intravenous infusion every 21 days until disease progression, loss of clinical benefit, or unacceptable toxicity (up to a total of 2 years of atezolizumab treatment).
Intervention: Atezolizumab
Outcomes
Primary Outcomes
Percentage of Participants With Objective Response Per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) as Determined by Investigator
Time Frame: Baseline up to 32 months
Investigator-assessed objective response rate was defined as the proportion of participants who had a confirmed best overall response of either PR or CR per RECIST v1.1.
Progression-Free Survival (PFS) Per RECIST v1.1 as Determined by Investigator, by Positive Versus Negative bTMB Groups
Time Frame: Baseline up to 32 months
Investigator-assessed PFS by RECIST v1.1 was defined as the time from the first dose of study drug to the time of PD or death from any cause during the study, whichever occurred first.
Secondary Outcomes
- Progression-Free Survival (PFS) Per RECIST v1.1 as Determined by Investigator(Baseline up to 32 months)
- Duration of Response (DOR) Per RECIST v1.1 as Determined by Investigator(Baseline up to 32 months)
- Percentage of Participants With Objective Response (Per RECIST v1.1) by Various bTMB Quantiles(Baseline up to 32 months)
- Disease Control Rate (DCR) Per RECIST v1.1 as Determined by Investigator(Baseline up to 32 months)
- Overall Survival (OS)(From baseline until death (up to 32 months))
- Percentage of Participants With Adverse Events(Baseline up to 32 months)
- Percentage of Participants Who Are Alive and Progression-Free (Per RECIST v1.1) at 6, 9, 12, and 18 Months by Various bTMB Quantiles(Months 6, 9, 12, and 18)
- OS by Various bTMB Cutoff Points 16 and 20(From baseline until death (up to 32 months))