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Re: tunnelvisionofplenty post# 752961

Friday, 03/07/2025 8:03:11 AM

Friday, March 07, 2025 8:03:11 AM

Post# of 819848

It first appeared in the minutes for the February 22 2024 meeting:

a medicine used in combination with platinum-based chemotherapy indicated for the first-line treatment of adults with metastatic non-small-cell lung cancer caused by changes in a gene called ‘EGFR’ (Epidermal Growth Factor receptor).



tunnelvisionofplenty,

I believe the February 2024 meeting referred to a different medicine: Osimertinib. Osimertinib is a highly selective and irreversible EGFR inhibitor that targets activating sensitizing EGFR mutations (EGFRm+) as well as the T790M resistance mutation. It is used in combination with platinum-based chemotherapy for the first-line treatment of adults with advanced non-small cell lung cancer (NSCLC) with EGFR exon 19 deletions or exon 21 (L858R) substitutions. Clinical trials showed it significantly improved progression-free survival. It was approved in September 2024. The medicine approved yesterday, Lazertinib, is also an EGFR inhibitor, but it is used with Amivantamab, which works through a different mechanism.

From NICE:

Osimertinib is indicated in combination with pemetrexed and
platinum-based chemotherapy for the first-line treatment of adult
patients with advanced NSCLC whose tumours have EGFR exon 19
deletions or exon 21 (L858R) substitution mutations.
• Marketing authorisation was granted in September 2024
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