HQY1428

HQY1428 is an orally active CDK12 inhibitor. It impedes DNA replication, causing cell cycle arrest at the G2/M phase in SKOV3 cells, and induces DNA double-strand breaks as well as apoptosis. In the SKOV3 xenograft mouse model, HQY1428 demonstrates antitumor activity. Additionally, when combined with the HER2 inhibitor Lapatinib in the NCI-N87 xenograft mouse model, HQY1428 produces a synergistic therapeutic effect.