Study of Radiation Therapy Followed by Atezolizumab in Stage II or III Non-small Cell Lung Cancer Patients

Summary

Objectives

PRIMARY OBJECTIVE:
I. To evaluate the rate of grade 3-5 treatment-related adverse events (TRAEs) in patients who are not candidates for surgery or concurrent chemoradiation and who have either performance status 0-2 and stage II or performance status 2 and stage III non-small cell lung cancer (NSCLC), treated with hypofractionated thoracic radiotherapy followed by atezolizumab.

SECONDARY OBJECTIVES:
I. To evaluate response rate (confirmed and unconfirmed, complete and partial by Response Evaluation Criteria in Solid Tumors [RECIST] 1.1) from Registration Step 2 in the subset of patients with measurable disease.
II. To evaluate response rate (confirmed and unconfirmed, complete and partial by RECIST 1.1) during radiation therapy in the subset of patients with measurable disease.
III. To evaluate progression free survival (PFS) from Registration Step 2 by RECIST 1.1.
IV. To evaluate overall survival (OS) from Registration Step 2.
V. To evaluate the frequency and severity of toxicities.

ADDITIONAL OBJECTIVE:
I. To bank blood and archival tissue for future research.

OUTLINE:

RADIATION THERAPY: Patients undergo hypofractionated radiation therapy 5 days per week over 3 weeks for 15 fractions in the absence of disease progression or unacceptable toxicity.

CONSOLIDATION: Patients receive atezolizumab intravenously (IV) over 30-60 minutes on day 1 of each cycle. Cycles repeat every 21 days for up to 12 months (maximum of 17 cycles) in the absence of disease progression or unacceptable toxicity. Patients undergo CT scan and may undergo MRI throughout the study, as well as blood sample collection on study.

After completion of study treatment, patients are followed up at 6 weeks, every 12 months for the 1 year, then every 6 months until 3 years after study start.