Therapeutic Response Statement (Sensitivity)

This therapeutic response statement supports the relationship that EGFR p.L858R status confers therapeutic sensitivity to Cisplatin, Osimertinib, Pemetrexed in patients with Non-Small Cell Lung Cancer.

This statement is based on a regulatory approval from the Health Canada:

TAGRISSO (osimertinib) is indicated in combination with pemetrexed and platinum-based chemotherapy for the first-line treatment of patients with locally advanced (not amenable to curative therapies) or metastatic NSCLC whose tumours have EGFR exon 19 deletions or exon 21 (L858R) substitution mutations.

Citation

AstraZeneca Canada Inc. Tagrisso (osimertinib) [product monograph]. Health Canada website. https://pdf.hres.ca/dpd_pm/00080336.PDF. Revised April 2025. Accessed June 2025.