First Line Treatment in EGFR Mutation Positive Advanced NSCLC Patients With Central Nervous System (CNS) Metastases

This is a Phase II/III randomized, open-label, multicenter study to compare the efficacy and safety of first line single-agent AZD3759 vs. Erlotinib or Gefitinib treatment in patients with advanced EGFR mutation positive NSCLC with CNS metastases.

Eligible patients with documented EGFR mutation+ (L858R and/or Exon 19Del) TKI-naïve advanced NSCLC and documented intracranial disease will be enrolled.

Inclusion criteria

• Properly completed patient informed consent
• Male or female aged at least 18 years
• Histologically or cytologically confirmed diagnosis of NSCLC with activating EGFR mutations including L858R and/or Exon19Del. EGFR mutation status will be determined by local or central laboratory testing on tumour tissue or plasma utilizing a validated methodology which has been approved by the regulatory authority.
• No prior treatment with chemotherapy, EGFR-TKIs, or biological therapies that are considered first line treatment for advanced NSCLC.
• All patients must have a documented diagnosis of advanced (Stage IV) NSCLC with Magnetic Resonance Imaging (MRI) documented CNS metastases that include brain metastases (BM). BM + patients with co- existent leptomeningeal involvement are eligible for the study.
• Eligible patients are not candidates for definitive surgical resection or radiation of all lesions in the opinion of the treating physician.
• All patients must be stable without any systemic (oral or parenteral) corticosteroid or anticonvulsant therapy for at least 2 weeks prior to study treatment. Inhaled non-absorbable and topical corticosteroid use are permitted as indicated.
• Patients may have prior placement of a properly functioning CNS shunt or Ommaya reservoir.
• Eastern Cooperative Oncology Group (ECOG) performance status 0 to 1 with no deterioration over the previous 2 weeks.
• Women of child-bearing potential and male subjects shall agree to take medically acceptable contraception measures while on study treatment and for 3 months following completion of study treatment. All women of child-bearing potential must have a negative blood pregnancy test at screening.
• (a) For Patients with measurable CNS lesions must have AT LEAST ONE site of CNS lesion, which was not previously irradiated, that can be accurately measured at baseline as ≥ 10 mm in the longest diameter by MRI and which is suitable for accurate repeated measurements. Measurable extracranial disease is not required. (b) For Patients with non-measurable CNS lesions must have AT LEAST ONE extracranial lesion, which has not been previously irradiated, within the screening period that can be accurately measured at baseline as ≥ 10 mm in the longest diameter (except lymph nodes which must have short axis ≥ 15 mm) by CT/MRI and are suitable for accurate repeated measurement.