How do you approach acquired resistance to a targeted therapy in lung cancer? Follow the algorithm!

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The question of how best to manage "acquired resistance" to a targeted therapy like an EGFR or ALK inhibitor in someone who has had a great response for a long time can be complicated and really doesn't have a best answer.  However, other doctors and many patients here and in the brick and mortar world ask me about how I approach it, and I've got some real opinions about it.  I'll qualify my further comments by saying that my own views have evolved over the years as we've gained more information as we get more clinical data and practical experience.

Radiation to Address Cells with Resistance to Targeted Therapies

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Introduction

Thank you to member Craig for asking some excellent questions in response to my Highlights of 2011 webinar.  Thank you also to Dr. West, who emailed me to comment more on the idea of radiation for cells with acquired resistance.

We’ve spoken at length about EGFR and related mutations such as EML4/ALK and ROS1 on GRACE.  For those who are not familiar with these subjects, I will refer you to my webinar for a summary on the most recent data on EGFR, EML4/ALK and ROS1:

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