Lung FAQ: What treatment should I receive now that my NSCLC with an EGFR mutation is progressing after responding for a year?

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The response of cancers with a specific driver mutation , such as an EGFR mutation or ALK rearrangement, to a targeted inhibitor of that target, is often dramatic and long-lasting, but it is also almost always limited in duration, typically lasting several months or a few years.  Beyond that point, we tend to see a subset of the cancer cells become resistant progress, perhaps manifested as one or several  new lesions or growth of one area against a background of most of the remainder of the cancer still being well-controlled.