Study to Evaluate Concordance of Detecting EGFR (Epidermal Growth Factor Receptor) Mutation by Circulating Tumour Free DNA Versus Tissues Biopsy in NSCLC (Non-small Cell Lung Cancer).

This is a multicentre, prospective, study of EGFR mutation status in advanced NSCLC patients (locally advanced and/or metastatic disease) with adenocarcinoma histology proposed to be conducted at 15 sites from different geographical regions across India. The study targets to enrol 268 patients over a period of 6 months. The study will enroll patients with histologically confirmed, systemic treatment naïve adenocarcinoma metastatic cancer (stage IV). This will be a single visit study. No study medication will be prescribed or administered as a part of study procedure.