Welcome to tagrissoandme.co.uk*
This website is intended only for UK patients who have been prescribed TAGRISSO® (osimertinib)
*This website has been produced and funded by AstraZeneca UK.
This website is intended only for UK patients who have been prescribed TAGRISSO® (osimertinib)
*This website has been produced and funded by AstraZeneca UK.
By now, you’ve already had biomarker testing and your tumour tested positive for a certain Epidermal Growth Factor Receptor (EGFR) biomarker which is why your doctor chose osimertinib for your type of lung cancer.2-4
Let’s take a step back and learn a little bit more about biomarkers.
Non-small cell lung cancer (NSCLC) biomarkers are molecules found on the surface of cells, or in the genes that instruct the cells how to behave. Certain biomarkers can be the drivers that cause cancer cells to grow and spread. Biomarkers vary between different cancers and people, which is why it’s important to test for them. Your doctor can decide the possible treatments for your cancer type to potentially prevent it from coming back, or from growing and spreading.5-8
One of the common biomarkers that your doctor will look for is an EGFR biomarker. The presence of the EGFR biomarker in people with NSCLC ranges from 10% to 15% in Caucasian patients and up to 60% in East-Asian patients.10 The EGFR biomarker is found mostly in patients with adenocarcinoma*, and is more frequent in women, patients who never smoked or used to smoke lightly, and patients of East Asian origin.11
*Adenocarcinoma is a subtype of NSCLC. It is usually found in the outer parts of the lung and is more likely to be found before it has spread to other parts of the body.12
Healthcare professionals often test for biomarkers with a biopsy, where tissue is removed from a tumour to be tested. With early-stage EGFR-positive NSCLC, a sample of the tissue may be removed during surgery.13-15
A blood test, which is sometimes referred to as a liquid biopsy or plasma test, is another option for both early- and late-stage EGFR-positive NSCLC.16,17
References:
GB-73010 I DOP: January 2026