An Accelerated Progression Relapse Test (APRT) and method is provided for use in the prognosis of a patient having an ER+ breast cancer. The APRT provides a determination of when a patient in a particular diseased state is likely to benefit from further disease treatment, or does not have a high probability of benefit with additional treatment. Four genetic probes are disclosed that target the MKI67, CDC6 and SPAG5 gene and gene products. The ER+ breast cancer patient population is stratified into two groups, with the low gene expression group identifying the patient/patient group that is less likely to benefit from additional treatment measures, and a high gene expression group identifying the patient group that is more likely to benefit from additional treatment measures.