Over the last decade, the three-year survival rate for lung cancer has increased dramatically. That means more people are living longer after a lung cancer diagnosis.

Evelyn Saunders Webb, a retired cardiology nurse who lives in San Antonio, is part of that progress. But when she was diagnosed with non-small cell lung cancer (NSCLC) in 2014, a good outcome wasn’t a given.

Evelyn’s lung cancer is driven by a rare mutation...