Overall response rate is the best response of complete response (CR) or partial response (PR) as classified by the investigators according to the Response Evaluation Criteria In Solid Tumors (RECIST v1.1). CR is a disappearance of all target and non-target lesions and normalization of tumor marker level. PR is an at least 30% decrease in the sum of the diameters of target lesions (taking as reference the baseline sum diameter) without progression of not-target lesions or appearance of new lesions. Overall response rate is calculated as a total number of participants with CR or PR divided by the total number of participants with at least 1 measurable lesion, multiplied by 100.

Progression-free survival (PFS) time is defined as the time from the date of randomization to the first date of documented objective progressive disease (PD) or death from any cause. For participants who were not known to have had objective PD as of the data inclusion cut-off date for a particular analysis, PFS was censored at the date of the last objective progression-free disease assessments. For participants who took any subsequent systemic anticancer therapy prior to progression, PFS was censored at the date of the last objective progression-free disease assessment prior to the start date of any subsequent systemic anticancer therapy. PFS time was summarized using Kaplan-Meier estimates.

The recommended Phase 2 dose for LY2603618 when administered approximately 24 hours after pemetrexed and cisplatin was based on the maximum tolerated dose (MTD) and achievement of predefined LY2603618 plasma systemic exposures targets (area under the LY2603618 plasma concentration versus time curve from time zero to infinity \[AUC(0-∞)\] \>21,000 nanogram\*hour/milliliter \[ng\*h/mL\] and maximum LY2603618 plasma concentration \[Cmax\] \>2000 nanograms/milliliter \[ng/mL\]).