In a widely used measure, the level of Ki-67 protein is determined using an antibody called MIB-1 in a labeling index (MIB Li) that correlates with aggression and survival time in gliomas [6], [7], [8], [9], [10] and many other cancers [11], [12], [13], [14], [15], [16]. The gene discussed is MKI67; the disease is central nervous system cancer.