This is a prospective, single-arm, multicenter, phase-IV study investigating the safety of osimertinib in Indian adult patients.

This is a prospective, single-arm, multicenter, phase-IV trial investigating the safety of osimertinib in Indian adult patients with locally advanced or metastatic EGFR-T790M mutation-positive NSCLC.

Prior to data collection, all patients must sign an informed consent form (ICF) allowing data collection and source data verification in accordance with local requirements and sponsor policy.

Patients with metastatic EGFR T790M mutation-positive NSCLC, who are eligible to osimertinib treatment as per locally approved prescribing information and ratified by an independent clinical judgment of treating physician will be evaluated for the inclusion into the current phase-IV study based on eligibility criteria. EGFR T790M positivity on plasma or tissue biopsy on PCR-based platform will be considered appropriate test. EGFR T790M must be performed after progressive disease on last line of therapy (on or after EGFR TKI therapy). In order to enroll approximately 60 patients, it is expected that approximately 70 patients will be screened.

Inclusion Criteria:

1. Patient of either gender and ≥18 years of age
2. Patients with metastatic EGFR T790M mutation-positive NSCLC, as detected by an appropriate test, who have progressed on or after EGFR TKI therapy by an independent clinical judgment of treating physician based on locally approved prescribing information
3. Each patient must sign an informed consent form (ICF)

Exclusion Criteria:

1. Patient with either the history of hypersensitivity to excipients of the study drug or to drugs with a similar chemical structure or class to the study drug.
2. Pregnant and/or lactating women
3. Patients participating in any current or future interventional trial will not be enrolled in the current study

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All request will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA Pharma Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

When a request has been approved AstraZeneca will provide access to the de-identified individual patient-level data in an approved sponsored tool . Signed Data Sharing Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information. Additionally, all users will need to accept the terms and conditions of the SAS MSE to gain access. For additional details, please review the Disclosure Statements at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

6 months

An adverse event is the development of an undesirable medical condition or the deterioration of a pre-existing medical condition following or during exposure to a pharmaceutical product, whether or not considered causally related to the product.