Itacitinib in Combination With Erlotinib in Non Small Cell Lung Cancer Patients With Epidermal Growth Factor Receptor (EGFR) Activating Mutations

The study consists of an open-label, safety run-in to confirm the safety of Itacitinibin
combination with erlotinib in subjects with nonsquamous non-small cell lung cancer (NSCLC)
that is Stage IIIB, Stage IV, or recurrent whose tumors have EGFR activating mutations.
Subjects in the safety run-in will receive open-label Itacitinib and erlotinib.

In the second part of the study, subjects will be enrolled and randomized to receive
erlotinib (open-label) and either Itacitinib or placebo in a blinded manner. The dose of
Itacitinib administered will be determined from the data produced in the safety run-in phase.

Treatment will consist of repeating 21-day cycles. Subjects will take erlotinib tablets daily
and Itacitinib/placebo will be self-administered daily during the entire cycle.

Inclusion Criteria:

- Histologically or cytologically confirmed diagnosis of nonsquamous NSCLC that is Stage
IIIB, Stage IV, or recurrent (including Stage II).

- Documented evidence of an activating mutation in EGFR in tumor samples (exon 19
deletions or point mutation L858R in exon 21 or point mutations at codon 719).

- A mGPS of 1 or 2 as defined below:

- Criteria: C-reactive protein >10 mg/L AND albumin ≥35 g/L Score-1

- Criteria: C-reactive protein >10 mg L AND albumin <35 g/L Score-2

- Radiographically measurable or evaluable disease.

- Life expectancy of at least 12 weeks.

- Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2.

- Adequate renal, hepatic, and bone marrow function demonstrated by protocol-specified
laboratory parameters at the screening visit.

Exclusion Criteria:

- Known presence of the T790M mutation in EGFR in tumor samples

- Candidates for curative radiation therapy or surgery.

- Previous systemic chemotherapy for advanced disease, including EGFR inhibitor therapy,
except subjects who received 1 cycle of chemotherapy while waiting to receive EGFR
results, who may enroll provided that 21 days have elapsed from end of chemotherapy to
the day to the baseline radiographic measurement prior to Cycle 1 Day 1.

- Distinct or suspected, or history of, pulmonary fibrosis or ILD.

- Current or previous other malignancy within 2 years of study entry, except cured basal
or squamous cell skin cancer, superficial bladder cancer, prostate intraepithelial
neoplasm, carcinoma in situ of the cervix, or other noninvasive indolent or Stage I
malignancy without sponsor approval.