ARCHER1050: A Study of Dacomitinib vs. Gefitinib in 1st-Line Treatment Of Advanced NSCLC.

Inclusion Criteria

• Evidence of histo or cytopathology confirmed, advanced NSCLC (with known histology) with the presence of EGFR-activating mutation (exon 19 deletion or the L858R mutation in exon 21).
• It is acceptable for subjects with the presence of the exon 20 T790M mutation together with either EGFR-activating mutation (exon 19 deletion or the L858R mutation in exon 21) to be included in this study
• No prior treatment with systemic therapy for locally advanced or metastatic NSCLC. Minimum of 12 months disease free interval between completion of neoadjuvant/adjuvant systemic therapy and recurrence of NSCLC
• Adequate tissue sample must be available for central analyses.
• Adequate renal, hematologic, liver function.
• ECOG PS of 0-1.
• Radiologically measurable disease.

Exclusion Criteria

• Any evidence of mixed histology that includes elements of small cell or carcinoid lung cancer.
• Any other mutation other than exon 19 deletion or L858R in exon 21, with or without the presence of the exon 20 T790M mutation.
• Any history of brain metastases or leptomeningeal metastases.
• Any previous anti-cancer systemic treatment of early, locally advanced, or metastatic NSCLC.
• Any surgery(not including minor procedures such as lymph node biopsy), palliative radiotherapy or pleurodesis within 2 weeks of baseline assessments
• Any clinically significant gastrointestinal abnormalities that may impair intake, transit or absorption of the study drug.
• Current enrollment in another therapeutic clinical study.
• History of, or currently suspected, diffuse non-infectious pneumonitis or interstitial lung disease
• Uncontrolled medical disorders.
• Prior malignancy and concurrent malignancy except for non melanoma skin cancer or in-situ cervical cancer with no evidence of active disease.
• Use of narrow therapeutic index drugs that are CYP2D6 substrates from screening to randomization.