The discovery of the ‘Warburg effect’ more than 80 years ago implied that inhibiting tumor cells’ ability to consume abnormally large amounts of glucose could prevent them from growing. Taking advantage of the fact that hexokinase-2 catalyzes the first step of glucose metabolism, researchers at Yıldız Teknik Üniversitesi and collaborators identified novel derivatives of the hexokinase-2 inhibitor lonidamine and identified at least one that was potentially more potent and less toxic.