A Neoadjuvant Study of Nivolumab Plus Ipilimumab or Nivolumab Plus Chemotherapy Versus Chemotherapy Alone in Early Stage Non-Small Cell Lung Cancer (NSCLC)

Event-free survival (EFS) is defined as the length of time from randomization to any of the following events: any progression of disease precluding surgery, progression or recurrence disease based on blinded independent central review (BICR) assessment per response evaluation criteria in solid tumors (RECIST) 1.1 after surgery, or death due to any cause. Participants who don't undergo surgery for reason other than progression will be considered to have an event at progression or death. Progression is defined as at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. (Note: the appearance of one or more new lesions is also considered progression).

Pathologic complete response (pCR) rate is defined as the number of randomized participants with absence of residual tumor in lung and lymph nodes as evaluated by blinded independent pathological review (BIPR).

Major pathologic response (MPR) rate is defined as number of randomized participants with </= 10% residual tumor in lung and lymph nodes as evaluated by blinded independent pathological review (BIPR). Viable tumors in situ carcinoma should not be included in MPR calculation.

Overall survival (OS) is defined as the time between the date of randomization and the date of death. OS will be censored on the last date a participant was known to be alive.

TTDM is defined as the time between the date of randomization and the first date of distant metastasis or the date of death in the absence of distant metastasis. Distant metastasis is defined as any new lesion that is outside of the thorax using blinded independent central review (BICR) according to response evaluation criteria in solid tumors (RECIST) 1.1. Patients who have not developed distant metastasis or died at the time of analysis will be censored on the date of their last evaluable tumor assessment.