Patient 5 was a 60 year-old female initially presenting with advanced lung adenocarcinoma...The result of NGS revealed HER2 insertion mutation (p.G780_P781dupGSP) (Figures 1B,D)...Then the patient took pyrotinib as the third-line therapy with the best response of PR, and PFS was 12.5 months until November 30, 2019.