Rung Five
All evidence
Rung 5 · Established

Tumor gene testing before lung cancer treatment

Many non-small cell lung cancers have a gene change with a matched drug.

TreatmentWith your doctor

What studies found

The American Cancer Society lists matched drugs for changes in EGFR, ALK, ROS1, KRAS G12C, BRAF, MET, RET, HER2, NTRK and NRG1. About 5% of non-small cell lung cancers have an ALK change, 1% to 2% a ROS1 change, and about 1 in 8 a KRAS G12C change. The National Cancer Institute notes that biomarker tests help predict which targeted drugs will work.

The catch

Testing guides treatment; it doesn't change outcomes by itself.

What to do

Before treatment starts, ask whether your tumor has been tested for gene changes.

Sources

Rung 5 of 5, Established: Large randomized trials or overwhelming, consistent human evidence; reflected in major guidelines. How we score

To take it to your doctor, print this page.

Step by step

For the whole picture, from prevention and screening to treatment and life after, see the lung cancer page.

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