HER2-IN-15 (Compound 1) is a HER2 inhibitor that effectively targets the YVMA HER2 exon 20 insertion mutation (HER2 YVMA) with an IC50 of less than 200 nM. It also inhibits the proliferation of BaF3 cells with the HER2 YVMA mutation, achieving an IC50 of under 200 nM, and contributes to the improvement of non-small cell lung cancer (NSCLC).

Her2 exon 20 YVMA insertion:<200 nM