In A2780 ovarian cancer cells treated with 2‐fluoro‐6‐formylphenylboronic acid, the downregulation of cyclin A‐CDK1/CDK2 and cyclin E‐CDK2 complexes (which manage the S phase) triggered S phase arrest, displaying antiproliferative effects on these cells [40]. The gene discussed is CDK1; the disease is ovarian cancer.