HM61713 causes potent inhibition in cell lines H1975 (L858R and T790M) and HCC827 (exon 19 deletion). It has a low potency for NSCLC cell line H358 harboring wild-type EGFR (GI50 of 2225 nM).
In vivo
HM61713 has a half-life of over 24 h for EGFR inhibition. In the in vivo studies of xenograft models with grafts of H1975 and HCC827, HM61713 is active against the tumors without showing any side effects.